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BertOS wiped

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Mark Qvist 2014-12-19 01:15:58 +01:00
parent 5637297e6f
commit aae3d2093d
296 changed files with 0 additions and 185011 deletions
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7
.gitignore vendored
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obj
*.project
*.workspace
resources
images/*.bin
images/*.s19
images/*.map

28
COMPILING
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-= Compiling with make =-
To compile you need a the gcc-avr toolchain and standard make utilities.
On Ubuntu/Debian this can be installed with:
apt-get install build-essential gcc-avr avr-libc binutils-avr avrdude
After that execute "make" in the main directory, and the modem firmware should compile.
You can use avrdude to flash to an Arduino compatible board. Have a look at the "flash" script, it makes this easy. If your board is connected to /dev/ttyUSB0, simply run:
./flash USB0
And avrdude should upload the firmware to the board.
-= Eclipse =-
If you want to use the Eclipse IDE, follow these steps:
- Install the AVR-eclipse plugin from http://avr-eclipse.sourceforge.net/wiki/index.php/Plugin_Download
- In eclipse, create a new project (File -> New -> Project…)
- In the new project box, select C/C++ -> “Makefile Project with Existing Code”
- Select a name, and locate the MicroModem folder for “Existing Code Location”
- Select “AVR-GCC Toolchain” in “Toolchain for indexer settings”
- Click “Finish”

108
Design/Case/Enclosure.scad
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w = 47.5;
h = 25;
d = 28.5;
t=1.5;
usbw = 8;
usbh = 3.5;
usbl = 1;
mdw = 25.7;
ss = 4;
ps = 4;
module box() {
difference() {
cube([w+2*t, d+2*t, h+2*t], center=true);
cube([w, d, h], center=true);
}
}
module topSlice() { translate([0,0,h/2]) cube([w+2*t+1, d+2*t+2, h], center=true); }
module bottomSlice() { translate([0,0,-h/2]) cube([w+2*t+1, d+2*t+2, h], center=true); }
module ports() {
module usb() {
// cube([usbw, usbh, t+2], center = true);
d1 = 11;
d2 = 9;
difference() {
cube([usbw, t+2, usbh], center = true);
translate([(usbw/2+usbw/d1), 0, (usbh/2+usbw/d1)]) rotate([0, 45, 0]) cube([3, t+2, usbh], center = true);
translate([-(usbw/2+usbw/d1), 0, (usbh/2+usbw/d1)]) rotate([0, -45, 0]) cube([3, t+2, usbh], center = true);
translate([(usbw/2+usbw/d2), 0, -(usbh/2+usbw/d2)]) rotate([0, -45, 0]) cube([3, t+2, usbh], center = true);
translate([-(usbw/2+usbw/d2), 0, -(usbh/2+usbw/d2)]) rotate([0, 45, 0]) cube([3, t+2, usbh], center = true);
}
}
translate([w/2-1, d/6, -8]) rotate([0, 90, 0]) cylinder(r=6.2/2, h=t+2, $fn=32);
translate([w/2-1, -d/6, -8]) rotate([0, 90, 0]) cylinder(r=6.2/2, h=t+2, $fn=32);
translate([-(w/2-mdw/2), d/2+t/2, -(h/2-(usbh/2)-usbl)]) usb();
}
module divider() {
translate([mdw-(w/2-t/2), 0, -(h/2-(h/6))]) cube([t, d, h/3], center=true);
}
module pegs() {
translate([(w/2-ps/2), (d/2-ps/2), -h/10]) cube([ps, ps, h-h/10], center=true);
translate([(w/2-ps/2), -(d/2-ps/2), -h/10]) cube([ps, ps, h-h/10], center=true);
translate([mdw-(w/2-t/2)+t/2+ps/2, (d/2-ps/2), -h/10]) cube([ps, ps, h-h/10], center=true);
translate([mdw-(w/2-t/2)+t/2+ps/2, -(d/2-ps/2), -h/10]) cube([ps, ps, h-h/10], center=true);
}
module indicators() {
translate([w/2+t/2, 0, 8]) slit();
translate([w/2+t/2, -2, 8]) slit();
translate([w/2+t/2, 2, 8]) slit();
}
module symbols() {
translate([w/2+t, -(d/2-(d/10)), -8]) one();
translate([w/2+t, (d/2-(d/10)), -8]) zero();
}
module zero() {
rotate([0, 90, 0]) linear_extrude(height=1, center=true) circle(r=ss/2, $fn=32);
}
module one() {
cube([1, 1, ss], center=true);
}
module slit() {
cube([2*t, 1, ss], center=true);
}
module top() {
difference() {
box();
bottomSlice();
indicators();
}
}
module bottom() {
union() {
difference() {
box();
topSlice();
ports();
symbols();
}
pegs();
divider();
}
}
module enclosure() {
translate([0,-(d/2+(d/6)),(h/2+t)]) rotate([180, 0, 0]) top();
translate([0,(d/2+(d/6)),(h/2+t)]) bottom();
//translate([0,0,(h/2+t)]) rotate([180, 0, 0]) top();
//bottom
}
enclosure();

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Design/Case/Enclosure_bottom.stl
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Generated by EAGLE CAM Processor 6.5.0
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Drills used:
Code Size used
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/home/markqvist/Source/eagle/ModemMicroduino/Modem.TXT

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Generated by EAGLE CAM Processor 6.5.0
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UsedLibrary="/home/markqvist/.eagle/lbr/isd.lbr"
UsedLibrary="/home/markqvist/.eagle/lbr/johanson-technology.lbr"
UsedLibrary="/home/markqvist/.eagle/lbr/jump-0r-smd.lbr"
UsedLibrary="/home/markqvist/.eagle/lbr/jumper.lbr"
UsedLibrary="/home/markqvist/.eagle/lbr/lantronix.lbr"
UsedLibrary="/home/markqvist/.eagle/lbr/lattice.lbr"
UsedLibrary="/home/markqvist/.eagle/lbr/lc-filter.lbr"
UsedLibrary="/home/markqvist/.eagle/lbr/led-7-segment.lbr"
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UsedLibrary="/home/markqvist/.eagle/lbr/led-lumiled.lbr"
UsedLibrary="/home/markqvist/.eagle/lbr/led.lbr"
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UsedLibrary="/home/markqvist/.eagle/lbr/lprs.lbr"
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UsedLibrary="/home/markqvist/.eagle/lbr/marks.lbr"
UsedLibrary="/home/markqvist/.eagle/lbr/maxim.lbr"
UsedLibrary="/home/markqvist/.eagle/lbr/maxstream.lbr"
UsedLibrary="/home/markqvist/.eagle/lbr/melexis.lbr"
UsedLibrary="/home/markqvist/.eagle/lbr/memory-hitachi.lbr"
UsedLibrary="/home/markqvist/.eagle/lbr/memory-idt.lbr"
UsedLibrary="/home/markqvist/.eagle/lbr/memory-micron.lbr"
UsedLibrary="/home/markqvist/.eagle/lbr/memory-motorola-dram.lbr"
UsedLibrary="/home/markqvist/.eagle/lbr/memory-nec.lbr"
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137
Design/MicroAPRSNavspark/MicroAprsNavspark/MicroAprsNavspark.ino
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@ -1,137 +0,0 @@
/*
Copyright 2014 Institute IRNAS Race - S56MC - Musti, musti@irnas.eu
MicroAprsNavspark is to be used with NavSpark Arduino environment, for more information visit http://navspark.com.tw
The MicroAprsNavspark is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The MicroAprsNavspark is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with the MicroAprsNavspark. If not, see http://www.gnu.org/licenses/.
*/
#include "sti_gnss_lib.h"
#include "GNSS.h"
#define POSITIONRATE 60 // periodically send the location - in seconds
uint16_t delayer = 0;
uint8_t gpio_bit = 0;
// Generally, you shuould use "unsigned long" for variables that hold time
// The value will quickly become too large for an int to store
unsigned long previousMillis = 0; // will store last time LED was updated
float lla_deg=0;
float lla_min=0;
float llo_deg=0;
float llo_min=0;
float lla=0;
float llo=0;
void setup() {
// put your setup code here, to run once:
GnssConf.setNavMode(STGNSS_NAV_MODE_AUTO);
GnssConf.setUpdateRate(STGNSS_POSITION_UPDATE_RATE_1HZ);
GnssConf.setDopMaskMode(STGNSS_DOP_MASK_AUTO);
GnssConf.setPdopMask(30.0);
GnssConf.setHdopMask(30.0);
GnssConf.setGdopMask(30.0);
GnssConf.init(); /* do initialization for GNSS */
gnss_gpio_set_output(gpio_bit);
//set up the serail port to talk to MicroAPRS
Serial.config(STGNSS_UART_8BITS_WORD_LENGTH, STGNSS_UART_1STOP_BITS, STGNSS_UART_NOPARITY);
Serial.begin(9600);
//configure the reset pin and reset MicroAPRS
pinMode(14,OUTPUT);
digitalWrite(14,LOW);
delay(100);
digitalWrite(14,HIGH);
delay(100);
// send settings
configureMicroAPRS();
}
void loop() {
// put your main code here, to run repeatedly:
}
void configureMicroAPRS(){
Serial.println("c<CALL>"); //callsign
Serial.println("sc7"); //SSID
Serial.println("S"); //save
}
/*
NOTE: "task_called_after_GNSS_update()" will be called about every second
(for 1Hz update rate), so we display the info. here.
*/
void task_called_after_GNSS_update(void)
{
static uint8_t val = 0;
char buf[64];
//blinking the blue LED
if (val == 1) gnss_gpio_high(gpio_bit);
else gnss_gpio_low(gpio_bit);
val = 1 - val;
//triggering the position update on the defined interval
delayer++;
if(delayer>POSITIONRATE){
aprs_send();
delayer=0;
}
//send the counter state to PC serial port
int len = sprintf(buf, "Counter: %d\r\n",delayer);
gnss_uart_putline(0,(U08*)buf,len);
}
void aprs_send(){
char buf[64];
char lla_sign;
char llo_sign;
// first get the updated location
GnssInfo.update();
//check if the location has been updated - valid fix
if (GnssInfo.isUpdated() == true) {
//get location information
lla=GnssInfo.location.latitude();
llo=GnssInfo.location.longitude();
//determine hemisphere
if(lla>=0){
lla_sign=0x4e; //capital N
}
else{
lla_sign=0x53; //capital S
lla*=-1;//make the number positive
}
if(llo>=0){
llo_sign=0x45; //capital E
}
else{
llo_sign=0x57; //capital W
llo*=-1;//make the number positive
}
//convert it to deg, min format
lla_deg=(int)lla;
lla_min=(lla-lla_deg)*60;
llo_deg=(int)llo;
llo_min=(llo-llo_deg)*60;
//print to serial port
uint8_t len=sprintf(buf, "!=%02.0f%.2f%c/%03.0f%.2f%c-PHG2/3060/MicroAPRS+Navspark\r\n",lla_deg,lla_min,lla_sign,llo_deg,llo_min,llo_sign);
Serial.print(buf);
gnss_uart_putline(0,(U08*)buf,len);
}
}

38
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Standalone MicroAPRS + Navspark GPS
==========
Standalone MicroAPRS + Navspark GPS module is the is fork of [MicroAPRS](https://github.com/markqvist/MicroAPRS). It is a standalone arduino compatible board with modem circuitry acting as a daughter board for [NavSpark](http://navspark.com.tw/) GPS/Glonass/Beidu Arduino compatible modules.
Please read the Mcicro APRS documentation prior to continuing here.
## Features
- Arduino Pro Mini 5V 16MHz compatible hardware design
- MicroAPRS modem design, with some component values tweaked
- Compatible with Wouxun/Baofeng low-cost radios that have a 3.5mm+2.5mm jack connection. UV-5R is a good choice.
- Powered either from USB via Navspark or from battery via Navspark on-board regulator
- Support for use of DS18B20 temperature sensors
- ADC channel with a divider for reading the battery voltage level
![MicroAPRSNavspark](https://raw.githubusercontent.com/IRNAS/MicroAPRS/master/DesignMicroAPRSNavspark/photos/navspark-microaprs-1.jpg)
## Instructions
Get the PCB manufactured with your preferred source, gerber files are published here. Solder the circuit and upload MicroAPRS code. Program Navspark with the code published here, modify it to contain you callsign and SSID. Enjoy.
By default location updates will be sent out ever 60s when then location fix is obtained.
### ToDo
Currently this this tracking system is very simple and sends a location update at a fixed interval. With NavSpark library it is possible to get the distance and many other parameters, creating a smarter location update mechanism.
The code can be cleaned up and optimized.
Create a 3D printed enclosure that clips to a radio and powers the circuit from its charging contacts.
Optimize the Navspark Arduino applicaton for power consumption.
![MicroAPRSNavspark](https://raw.githubusercontent.com/IRNAS/MicroAPRS/master/DesignMicroAPRSNavspark/photos/navspark-microaprs-2.jpg)
![MicroAPRSNavspark](https://raw.githubusercontent.com/IRNAS/MicroAPRS/master/DesignMicroAPRSNavspark/photos/navspark-microaprs-3.jpg)
![MicroAPRSNavspark](https://raw.githubusercontent.com/IRNAS/MicroAPRS/master/DesignMicroAPRSNavspark/photos/navspark-microaprs-4.jpg)

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Version 1.24: (courtesy of Nils Eilers)
-- fixed exit code on success to be 0 instead of EINVAL
-- added --self-powered flag
Version 1.23:
-- added GPLv2 licensing.
Version 1.22:
-- try again to preserve USB version from eeprom.
Version 1.21:
-- preserve USB version from eeprom; libusb no longer does this correctly (sigh).
Version 1.10:
-- now able to invert _all_ the serial and handshake lines (not just DTR).
(courtesy of Jonas Meyer, thanks!)
Version 1.09:
Version 1.08:
-- fix compiler warning from newer gcc
-- Makefile fixes for latest Ubuntu & binutils
Version 1.06:
-- fix libftdi-0.19 API breakage by not using "BM_type_chip" from libftdi0-0.18.

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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
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software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
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When we speak of free software, we are referring to freedom, not
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To protect your rights, we need to make restrictions that forbid
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We protect your rights with two steps: (1) copyright the software, and
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Finally, any free program is threatened constantly by software
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TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License. The "Program", below,
refers to any such program or work, and a "work based on the Program"
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that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
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is covered only if its contents constitute a work based on the
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Whether that is true depends on what the Program does.
1. You may copy and distribute verbatim copies of the Program's
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and give any other recipients of the Program a copy of this License
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These requirements apply to the modified work as a whole. If
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In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
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may add an explicit geographical distribution limitation excluding
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How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
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convey the exclusion of warranty; and each file should have at least
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<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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This program is distributed in the hope that it will be useful,
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Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
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Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
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mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
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necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.

11
Documentation/FT232R/ft232r_prog-1.24/Makefile
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CFLAGS = -Wall -O2 -s -Werror
LDFLAGS = -lusb -lftdi -s
PROG = ft232r_prog
all: $(PROG)
$(PROG): $(PROG).c
$(CC) $(CFLAGS) -o $@ $< $(LDFLAGS)
clean:
rm -f $(PROG)

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814
Documentation/FT232R/ft232r_prog-1.24/ft232r_prog.c
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/*
* ft232r_prog.c by Mark Lord. Copyright 2010-2013.
*
* This is a Linux command-line alternative to the FTDI MProg/FTProg utilities.
* It is known to work only for FT232R chips at this time.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file LICENSE.txt. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <ftdi.h>
#define MYVERSION "1.24"
static struct ftdi_context ftdi;
static int verbose = 0;
static const char *save_path = NULL, *restore_path = NULL;
enum cbus_mode {
cbus_txden = 0,
cbus_pwren = 1,
cbus_rxled = 2,
cbus_txled = 3,
cbus_txrxled = 4,
cbus_sleep = 5,
cbus_clk48 = 6,
cbus_clk24 = 7,
cbus_clk12 = 8,
cbus_clk6 = 9,
cbus_io = 10,
cbus_wr = 11,
cbus_rd = 12,
cbus_rxf = 13,
};
static const char *cbus_mode_strings[] = {
"TxDEN",
"PwrEn",
"RxLED",
"TxLED",
"TxRxLED",
"Sleep",
"Clk48",
"Clk24",
"Clk12",
"Clk6",
"IO",
"WR",
"RD",
"RxF",
NULL
};
enum arg_type {
arg_help,
arg_dump,
arg_verbose,
arg_save,
arg_restore,
arg_cbus0,
arg_cbus1,
arg_cbus2,
arg_cbus3,
arg_cbus4,
arg_manufacturer,
arg_product,
arg_old_serno,
arg_new_serno,
arg_self_powered,
arg_max_bus_power,
arg_high_current_io,
arg_suspend_pull_down,
arg_old_vid,
arg_old_pid,
arg_new_vid,
arg_new_pid,
arg_invert_txd,
arg_invert_rxd,
arg_invert_rts,
arg_invert_cts,
arg_invert_dtr,
arg_invert_dsr,
arg_invert_dcd,
arg_invert_ri,
};
static const char *arg_type_strings[] = {
"--help",
"--dump",
"--verbose",
"--save",
"--restore",
"--cbus0",
"--cbus1",
"--cbus2",
"--cbus3",
"--cbus4",
"--manufacturer",
"--product",
"--old-serial-number",
"--new-serial-number",
"--self-powered",
"--max-bus-power",
"--high-current-io",
"--suspend-pull-down",
"--old-vid",
"--old-pid",
"--new-vid",
"--new-pid",
"--invert_txd",
"--invert_rxd",
"--invert_rts",
"--invert_cts",
"--invert_dtr",
"--invert_dsr",
"--invert_dcd",
"--invert_ri",
NULL
};
static const char *arg_type_help[] = {
" # (show this help text)",
" # (dump eeprom settings to stdout))",
"# (show debug info and raw eeprom contents)",
" # (save original eeprom contents to file)",
"# (restore initial eeprom contents from file)",
"",
"",
"",
"",
"",
" <string> # (new USB manufacturer string)",
" <string> # (new USB product name string)",
"<string> # (current serial number of device to be reprogrammed)",
"<string> # (new USB serial number string)",
" [on|off] # (self powered)",
" <number> # (max bus current in milli-amperes)",
" [on|off] # (enable high [6mA @ 5V] drive current on CBUS pins)",
"[on|off] # (force I/O pins into logic low state on suspend)",
" <number> # (current vendor id of device to be reprogrammed, eg. 0x0403)",
" <number> # (current product id of device to be reprogrammed, eg. 0x6001)",
" <number> # (new/custom vendor id to be programmed)",
" <number> # (new/custom product id be programmed)",
" Inverts the current value of TXD",
" Inverts the current value of RXD",
" Inverts the current value of RTS",
" Inverts the current value of CTS",
" Inverts the current value of DTR",
" Inverts the current value of DSR",
" Inverts the current value of DCD",
" Inverts the current value of RI",
};
static const char *bool_strings[] = {
"off",
"on",
"0",
"1",
"no",
"yes",
"disable",
"enable",
};
struct eeprom_fields {
unsigned char byte01;
unsigned char high_current_io; /* bool */
unsigned char load_d2xx_driver; /* bool */
unsigned char txd_inverted; /* bool */
unsigned char rxd_inverted; /* bool */
unsigned char rts_inverted; /* bool */
unsigned char cts_inverted; /* bool */
unsigned char dtr_inverted; /* bool */
unsigned char dsr_inverted; /* bool */
unsigned char dcd_inverted; /* bool */
unsigned char ri_inverted; /* bool */
unsigned char pnp_enabled; /* bool */
enum cbus_mode cbus[5];
unsigned char extras[112]; /* extra, undefined fields */
struct ftdi_eeprom libftdi; /* stuff known to libftdi */
unsigned char BM_type_chip; /* from libftdi-0.18, missing in 0.19 */
/* These are not actually eeprom values; here for convenience */
unsigned short old_vid;
unsigned short old_pid;
const char *old_serno;
unsigned short new_vid;
unsigned short new_pid;
};
static void dumpmem (const char *msg, void *addr, int len)
{
char *data = addr, hex[3 * 16 + 1], ascii[17];
unsigned int i, offset = 0;
if (msg)
printf("%s:\n", msg);
for (i = 0; i < len;) {
unsigned int i16 = i % 16;
unsigned char c = data[i];
sprintf(hex + (3 * i16), " %02x", c);
ascii[i16] = (c < ' ' || c > '~') ? '.' : c;
if (++i == len || i16 == 15) {
ascii[i16 + 1] = '\0';
for (; i16 != 15; ++i16)
strcat(hex, " ");
printf("%04x:%s %s\n", offset, hex, ascii);
offset = i;
}
}
}
static unsigned short calc_crc (void *addr, int len)
{
unsigned int i;
unsigned short crc = 0xaaaa;
unsigned char *d8 = addr;
for (i = 0; i < len - 2; i += 2) {
crc ^= d8[i] | (d8[i+1] << 8);
crc = (crc << 1) | (crc >> 15);
}
return crc;
}
static void do_deinit (void)
{
ftdi_deinit(&ftdi);
}
static void do_close (void)
{
ftdi_usb_close(&ftdi);
}
static unsigned short verify_crc (void *addr, int len)
{
unsigned short crc = calc_crc(addr, len);
unsigned char *d8 = addr;
unsigned short actual = d8[len-2] | (d8[len-1] << 8);
if (crc != actual) {
fprintf(stderr, "Bad CRC: crc=0x%04x, actual=0x%04x\n", crc, actual);
exit(EINVAL);
}
if (verbose) printf("CRC: Okay (0x%04x)\n", crc);
return crc;
}
static unsigned short update_crc (void *addr, int len)
{
unsigned short crc = calc_crc(addr, len);
unsigned char *d8 = addr;
d8[len-2] = crc;
d8[len-1] = crc >> 8;
return crc;
}
static int match_arg (const char *arg, const char **possibles)
{
int i;
for (i = 0; possibles[i]; ++i) {
if (0 == strcasecmp(possibles[i], arg))
return i;
}
fprintf(stderr, "unrecognized arg: \"%s\"\n", arg);
exit(EINVAL);
return -1; /* never reached */
}
static unsigned long unsigned_val (const char *arg, unsigned long max)
{
unsigned long val;
errno = 0;
val = strtoul(arg, NULL, 0);
if (errno || val > max) {
fprintf(stderr, "%s: bad value (max=0x%lx)\n", arg, max);
exit(EINVAL);
}
return val;
}
static void ee_dump (struct eeprom_fields *ee)
{
unsigned int c;
printf(" eeprom_size = %d\n", ee->libftdi.size);
printf(" vendor_id = 0x%04x\n", ee->libftdi.vendor_id);
printf(" product_id = 0x%04x\n", ee->libftdi.product_id);
printf(" self_powered = %d\n", ee->libftdi.self_powered);
printf(" remote_wakeup = %d\n", ee->libftdi.remote_wakeup);
printf("suspend_pull_downs = %d\n", ee->libftdi.suspend_pull_downs);
printf(" max_bus_power = %d mA\n", 2 * ee->libftdi.max_power);
printf(" manufacturer = %s\n", ee->libftdi.manufacturer);
printf(" product = %s\n", ee->libftdi.product);
printf(" serialnum = %s\n", ee->libftdi.serial);
printf(" high_current_io = %u\n", ee->high_current_io);
printf(" load_d2xx_driver = %u\n", ee->load_d2xx_driver);
printf(" txd_inverted = %u\n", ee->txd_inverted);
printf(" rxd_inverted = %u\n", ee->rxd_inverted);
printf(" rts_inverted = %u\n", ee->rts_inverted);
printf(" cts_inverted = %u\n", ee->cts_inverted);
printf(" dtr_inverted = %u\n", ee->dtr_inverted);
printf(" dsr_inverted = %u\n", ee->dsr_inverted);
printf(" dcd_inverted = %u\n", ee->dcd_inverted);
printf(" ri_inverted = %u\n", ee->ri_inverted);
for (c = 0; c < 5; ++c)
printf(" cbus[%u] = %s\n", c, cbus_mode_strings[ee->cbus[c]]);
if (verbose) {
/* These fields are non-applicable for FT232R devices */
printf(" usb_version = %d\n", ee->libftdi.usb_version);
printf(" use_serialnum = %d (n/a)\n", ee->libftdi.use_serial);
printf("change_usb_version = %d (n/a)\n", ee->libftdi.change_usb_version);
printf(" pnp_enabled = %u (n/a)\n", ee->pnp_enabled);
printf(" BM_type_chip = 0x%02x (n/a)\n", ee->BM_type_chip);
printf(" in_is_isochronous = %d (n/a)\n", ee->libftdi.in_is_isochronous);
printf("out_is_isochronous = %d (n/a)\n", ee->libftdi.out_is_isochronous);
}
};
static unsigned int calc_extras_offset (unsigned char *eeprom)
{
unsigned int str1 = (eeprom[0x0e] & 0x7f) + eeprom[0x0f];
unsigned int str2 = (eeprom[0x10] & 0x7f) + eeprom[0x11];
unsigned int str3 = (eeprom[0x12] & 0x7f) + eeprom[0x13];
unsigned int offset;
if (str3 > str2)
offset = (str3 > str1) ? str3 : str1;
else
offset = (str2 > str1) ? str2 : str1;
return offset;
}
static unsigned int encode_string (void *eeprom, int desc, int offset, char *s)
{
unsigned char c, *u8 = eeprom, slen = (strlen(s) + 1) * 2;
if (!s || !*s)
return offset;
u8[desc + 0] = offset | 0x80; /* offset of string */
u8[desc + 1] = slen; /* length */
u8[offset++] = slen; /* length */
u8[offset++] = 0x03; /* "type" == string */
while ((c = *s++)) {
u8[offset++] = c;
u8[offset++] = 0;
}
return offset;
}
static void ft232r_eprom_build (struct eeprom_fields *ee, unsigned char *eeprom)
{
unsigned int len = ee->libftdi.size;
int offset = 0x18;
memset(eeprom, 0, len);
if (strlen(ee->libftdi.serial) > 16) {
fprintf(stderr, "Serial number string exceeds limit of 16 chars, aborting.\n");
exit(EINVAL);
}
if ((strlen(ee->libftdi.manufacturer) + strlen(ee->libftdi.product) + strlen(ee->libftdi.serial)) > 46) {
fprintf(stderr, "Total string sizes exceed limit of 46 chars, aborting.\n");
exit(EINVAL);
}
offset = encode_string(eeprom, 0x0e, offset, ee->libftdi.manufacturer);
offset = encode_string(eeprom, 0x10, offset, ee->libftdi.product);
offset = encode_string(eeprom, 0x12, offset, ee->libftdi.serial);
eeprom[0x02] = ee->libftdi.vendor_id;
eeprom[0x03] = ee->libftdi.vendor_id >> 8;
eeprom[0x04] = ee->libftdi.product_id;
eeprom[0x05] = ee->libftdi.product_id >> 8;
eeprom[0x07] = ee->BM_type_chip;
eeprom[0x08] = 0x80;
if (ee->libftdi.remote_wakeup)
eeprom[0x08] |= 0x20;
if (ee->libftdi.self_powered)
eeprom[0x08] |= 0x40;
eeprom[0x09] = ee->libftdi.max_power;
if (ee->libftdi.in_is_isochronous)
eeprom[0x0a] |= 0x01;
if (ee->libftdi.out_is_isochronous)
eeprom[0x0a] |= 0x02;
if (ee->libftdi.suspend_pull_downs)
eeprom[0x0a] |= 0x04;
if (ee->libftdi.use_serial)
eeprom[0x0a] |= 0x08;
if (ee->libftdi.change_usb_version)
eeprom[0x0a] |= 0x10;
eeprom[0x0c] = ee->libftdi.usb_version;
eeprom[0x0d] = ee->libftdi.usb_version >> 8;
}
/*
* There are some undefined "extra features" bytes after the strings.
* So blindly preserve them from the original eeprom image.
*/
static void ee_encode_extras (unsigned char *eeprom, int len, struct eeprom_fields *ee)
{
unsigned int extras_offset = calc_extras_offset(eeprom);
memcpy(eeprom + extras_offset, ee->extras, len - extras_offset - 2);
if (ee->pnp_enabled)
eeprom[extras_offset + 2] |= 1;
else
eeprom[extras_offset + 2] &= ~1;
}
static unsigned short ee_encode (unsigned char *eeprom, int len, struct eeprom_fields *ee)
{
int ret;
memset(eeprom, 0, len);
ee->libftdi.size = len;
if (ee->new_vid)
ee->libftdi.vendor_id = ee->new_vid;
if (ee->new_pid)
ee->libftdi.product_id = ee->new_pid;
/* Unfortunately, ftdi_eeprom_build() is buggy and puts things in the wrong places */
if (0) {
ret = ftdi_eeprom_build(&ee->libftdi, eeprom);
if (ret < 0) {
fprintf(stderr, "ftdi_eeprom_build() failed, ret=%d\n", ret);
exit(EINVAL);
}
printf("ftdi_eeprom_build() ret=%d\n", ret);
} else {
ft232r_eprom_build(ee, eeprom);
}
eeprom[1] = ee->byte01;
if (ee->high_current_io)
eeprom[0x00] |= 0x04;
if (ee->load_d2xx_driver)
eeprom[0x00] |= 0x08;
if (ee->txd_inverted)
eeprom[0x0b] |= 0x01;
if (ee->rxd_inverted)
eeprom[0x0b] |= 0x02;
if (ee->rts_inverted)
eeprom[0x0b] |= 0x04;
if (ee->cts_inverted)
eeprom[0x0b] |= 0x08;
if (ee->dtr_inverted)
eeprom[0x0b] |= 0x10;
if (ee->dsr_inverted)
eeprom[0x0b] |= 0x20;
if (ee->dcd_inverted)
eeprom[0x0b] |= 0x40;
if (ee->ri_inverted)
eeprom[0x0b] |= 0x80;
eeprom[0x14] = (ee->cbus[1] << 4) | ee->cbus[0];
eeprom[0x15] = (ee->cbus[3] << 4) | ee->cbus[2];
eeprom[0x16] = ee->cbus[4];
ee_encode_extras(eeprom, len, ee);
return update_crc(eeprom, len);
}
/*
* There are some undefined "extra features" bytes after the strings.
* So blindly preserve them from the original eeprom image.
*/
static void ee_decode_extras (unsigned char *eeprom, int len, struct eeprom_fields *ee)
{
unsigned int extras_offset = calc_extras_offset(eeprom);
memcpy(ee->extras, eeprom + extras_offset, len - extras_offset - 2);
ee->pnp_enabled = eeprom[extras_offset + 2] & 0x01;
}
static void ee_decode (unsigned char *eeprom, int len, struct eeprom_fields *ee)
{
memset(ee, 0, sizeof(*ee));
if (eeprom[0] & 0x04)
ee->high_current_io = 1;
if (eeprom[0x00] & 0x08)
ee->load_d2xx_driver = 1;
ee->byte01 = eeprom[0x01];
if (eeprom[0x0b] & 0x01)
ee->txd_inverted = 1;
if (eeprom[0x0b] & 0x02)
ee->rxd_inverted = 1;
if (eeprom[0x0b] & 0x04)
ee->rts_inverted = 1;
if (eeprom[0x0b] & 0x08)
ee->cts_inverted = 1;
if (eeprom[0x0b] & 0x10)
ee->dtr_inverted = 1;
if (eeprom[0x0b] & 0x20)
ee->dsr_inverted = 1;
if (eeprom[0x0b] & 0x40)
ee->dcd_inverted = 1;
if (eeprom[0x0b] & 0x80)
ee->ri_inverted = 1;
ee->cbus[0] = eeprom[0x14] & 0xf;
ee->cbus[1] = eeprom[0x14] >> 4;
ee->cbus[2] = eeprom[0x15] & 0xf;
ee->cbus[3] = eeprom[0x15] >> 4;
ee->cbus[4] = eeprom[0x16] & 0xf;
ee_decode_extras(eeprom, len, ee);
/* Use libftdi to decode the remaining fields, which it knows about */
if (ftdi_eeprom_decode(&ee->libftdi, eeprom, len)) {
fprintf(stderr, "ftdi_eeprom_decode() failed\n");
exit(EINVAL);
}
ee->BM_type_chip = eeprom[0x07]; /* buggy ftdi_eeprom_decode() */
if (eeprom[0x0a] & 0x10) /* more buggy ftdi_eeprom_decode() */
ee->libftdi.change_usb_version = 1;
else
ee->libftdi.change_usb_version = 0;
ee->libftdi.usb_version = (eeprom[0x0d] << 8) | eeprom[0x0c];;
}
static const char *myname;
static void show_help (FILE *fp)
{
int i;
fprintf(fp, "\nUsage: %s [<arg> <val>]..\n", myname);
fprintf(fp, "\nwhere <arg> must be any of:\n");
for (i = 0; arg_type_strings[i]; ++i) {
const char *val = arg_type_help[i];
fprintf(fp, " %s", arg_type_strings[i]);
if (val) {
if (*val) {
fprintf(fp, " %s", val);
} else { /* cbus args */
int j;
fprintf(fp, " [");
for (j = 0; cbus_mode_strings[j];) {
fprintf(fp, "%s", cbus_mode_strings[j]);
if (cbus_mode_strings[++j])
fprintf(fp, "|");
}
fprintf(fp, "]");
}
}
fputc('\n', fp);
}
fputc('\n', fp);
}
static unsigned short ee_read_and_verify (void *eeprom, int len)
{
if (ftdi_read_eeprom(&ftdi, eeprom)) {
fprintf(stderr, "ftdi_read_eeprom() failed: %s\n", ftdi_get_error_string(&ftdi));
exit(EIO);
}
return verify_crc(eeprom, len);
}
static void process_args (int argc, char *argv[], struct eeprom_fields *ee)
{
int i;
for (i = 1; i < argc;) {
int arg;
arg = match_arg(argv[i++], arg_type_strings);
switch (arg) {
case arg_help:
show_help(stdout);
exit(1);
case arg_dump:
continue;
case arg_verbose:
verbose = 1;
continue;
case arg_invert_txd:
ee->txd_inverted = !ee->txd_inverted;
continue;
case arg_invert_rxd:
ee->rxd_inverted = !ee->rxd_inverted;
continue;
case arg_invert_rts:
ee->rts_inverted = !ee->rts_inverted;
continue;
case arg_invert_cts:
ee->cts_inverted = !ee->cts_inverted;
continue;
case arg_invert_dtr:
ee->dtr_inverted = !ee->dtr_inverted;
continue;
case arg_invert_dsr:
ee->dsr_inverted = !ee->dsr_inverted;
continue;
case arg_invert_dcd:
ee->dcd_inverted = !ee->dcd_inverted;
continue;
case arg_invert_ri:
ee->ri_inverted = !ee->ri_inverted;
continue;
}
if (i == argc) {
fprintf(stderr, "%s: missing %s value\n", argv[i-2], argv[i-1]);
exit(EINVAL);
}
switch (arg) {
case arg_save:
save_path = argv[i++];
break;
case arg_restore:
restore_path = argv[i++];
break;
case arg_cbus0:
case arg_cbus1:
case arg_cbus2:
case arg_cbus3:
case arg_cbus4:
ee->cbus[arg - arg_cbus0] = match_arg(argv[i++], cbus_mode_strings);
break;
case arg_manufacturer:
ee->libftdi.manufacturer = argv[i++];
break;
case arg_product:
ee->libftdi.product = argv[i++];
break;
case arg_new_serno:
ee->libftdi.serial = argv[i++];
break;
case arg_high_current_io:
ee->high_current_io = match_arg(argv[i++], bool_strings) & 1;
break;
case arg_self_powered:
ee->libftdi.self_powered = match_arg(argv[i++], bool_strings) & 1;
break;
case arg_max_bus_power:
ee->libftdi.max_power = unsigned_val(argv[i++], 0x1ff) / 2;
break;
case arg_suspend_pull_down:
ee->libftdi.suspend_pull_downs = unsigned_val(argv[i++], 0xff);
break;
case arg_old_vid:
ee->old_vid = unsigned_val(argv[i++], 0xffff);
break;
case arg_old_pid:
ee->old_pid = unsigned_val(argv[i++], 0xffff);
break;
case arg_old_serno:
ee->old_serno = argv[i++];
break;
case arg_new_vid:
ee->new_vid = unsigned_val(argv[i++], 0xffff);
break;
case arg_new_pid:
ee->new_pid = unsigned_val(argv[i++], 0xffff);
break;
default:
fprintf(stderr, "bad args\n");
exit(EINVAL);
}
}
}
static void save_eeprom_to_file (const char *path, void *eeprom, int len)
{
int count, fd = open(path, O_CREAT|O_WRONLY|O_TRUNC, 0644);
if (fd == -1) {
int err = errno;
perror(path);
exit(err);
}
count = write(fd, eeprom, len);
if (count < 0) {
int err = errno;
perror(path);
exit(err);
}
close(fd);
if (count != len) {
fprintf(stderr, "%s: wrong size, wrote %d/%d bytes\n", path, count, len);
exit(EINVAL);
}
printf("%s: wrote %d bytes\n", path, count);
}
static void restore_eeprom_from_file (const char *path, void *eeprom, int len, int max)
{
int count, fd = open(path, O_RDONLY);
if (fd == -1) {
int err = errno;
perror(path);
exit(err);
}
count = read(fd, eeprom, max);
if (count < 0) {
int err = errno;
perror(path);
exit(err);
}
close(fd);
if (count != len ) {
fprintf(stderr, "%s: wrong size, read %d/%d bytes\n", path, count, len);
exit(EINVAL);
}
printf("%s: read %d bytes\n", path, count);
verify_crc(eeprom, len);
}
int main (int argc, char *argv[])
{
const char *slash;
unsigned char old[256] = {0,}, new[256] = {0,};
unsigned short new_crc;
struct eeprom_fields ee;
unsigned int len = 128;
myname = argv[0];
slash = strrchr(myname, '/');
if (slash)
myname = slash + 1;
printf("\n%s: version %s, by Mark Lord.\n", myname, MYVERSION);
if (argc < 2) {
show_help(stdout);
exit(0);
}
ftdi_init(&ftdi);
atexit(&do_deinit);
memset(&ee, 0, sizeof(ee));
ee.old_vid = 0x0403;; /* default; override with --old_vid arg */
ee.old_pid = 0x6001; /* default; override with --old_pid arg */
process_args(argc, argv, &ee); /* handle --help and --old-* args */
if (ftdi_usb_open_desc(&ftdi, ee.old_vid, ee.old_pid, NULL, ee.old_serno)) {
fprintf(stderr, "ftdi_usb_open() failed for %04x:%04x:%s %s\n",
ee.old_vid, ee.old_pid, ee.old_serno ? ee.old_serno : "", ftdi_get_error_string(&ftdi));
exit(ENODEV);
}
atexit(&do_close);
/* First, read the original eeprom from the device */
(void) ee_read_and_verify(old, len);
if (verbose) dumpmem("existing eeprom", old, len);
/* Save old contents to a file, if requested (--save) */
if (save_path)
save_eeprom_to_file(save_path, old, len);
/* Restore contents from a file, if requested (--restore) */
if (restore_path) {
restore_eeprom_from_file(restore_path, new, len, sizeof(new));
if (verbose) dumpmem(restore_path, new, len);
/* Decode file contents into ee struct */
ee_decode(new, len, &ee);
} else {
/* Decode eeprom contents into ee struct */
ee_decode(old, len, &ee);
/* Reencode without any changes, to ensure we can reconstruct the original eeprom from ee */
new_crc = ee_encode(new, len, &ee);
if (memcmp(old, new, len)) {
if (verbose) dumpmem("reconstructed eeprom", new, len);
fprintf(stderr, "eeprom reconstruction self-test failed, aborting.\n");
exit(EINVAL);
}
}
/* process args, and dump new settings */
process_args(argc, argv, &ee); /* Handle value-change args */
ee_dump(&ee);
/* Build new eeprom image */
new_crc = ee_encode(new, len, &ee);
/* If different from original, then write it back to the device */
if (0 == memcmp(old, new, len)) {
printf("No change from existing eeprom contents.\n");
} else {
if (verbose) dumpmem("new eeprom", new, len);
printf("Rewriting eeprom with new contents.\n");
if (ftdi_write_eeprom(&ftdi, new)) {
fprintf(stderr, "ftdi_write_eeprom() failed: %s\n", ftdi_get_error_string(&ftdi));
exit(EIO);
}
/* Read it back again, and check for differences */
if (ee_read_and_verify(new, len) != new_crc) {
fprintf(stderr, "Readback test failed, results may be botched\n");
exit(EINVAL);
}
ftdi_usb_reset(&ftdi); /* reset the device to force it to load the new settings */
}
return 0;
}

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sudo ./ft232r_prog –old-pid 0x000 –new-pid 0x6001

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677
LICENSE
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@ -1,677 +0,0 @@
(This project uses BertOS for some functionality. BertOS is licensed under GPLv2. Please see http://www.bertos.org for details. All files in the "bertos" directory originates from BertOS.)
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The GNU General Public License is a free, copyleft license for
software and other kinds of works.
The licenses for most software and other practical works are designed
to take away your freedom to share and change the works. By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users. We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors. You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
them if you wish), that you receive source code or can get it if you
want it, that you can change the software or use pieces of it in new
free programs, and that you know you can do these things.
To protect your rights, we need to prevent others from denying you
these rights or asking you to surrender the rights. Therefore, you have
certain responsibilities if you distribute copies of the software, or if
you modify it: responsibilities to respect the freedom of others.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must pass on to the recipients the same
freedoms that you received. You must make sure that they, too, receive
or can get the source code. And you must show them these terms so they
know their rights.
Developers that use the GNU GPL protect your rights with two steps:
(1) assert copyright on the software, and (2) offer you this License
giving you legal permission to copy, distribute and/or modify it.
For the developers' and authors' protection, the GPL clearly explains
that there is no warranty for this free software. For both users' and
authors' sake, the GPL requires that modified versions be marked as
changed, so that their problems will not be attributed erroneously to
authors of previous versions.
Some devices are designed to deny users access to install or run
modified versions of the software inside them, although the manufacturer
can do so. This is fundamentally incompatible with the aim of
protecting users' freedom to change the software. The systematic
pattern of such abuse occurs in the area of products for individuals to
use, which is precisely where it is most unacceptable. Therefore, we
have designed this version of the GPL to prohibit the practice for those
products. If such problems arise substantially in other domains, we
stand ready to extend this provision to those domains in future versions
of the GPL, as needed to protect the freedom of users.
Finally, every program is threatened constantly by software patents.
States should not allow patents to restrict development and use of
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avoid the special danger that patents applied to a free program could
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patents cannot be used to render the program non-free.
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modification follow.
TERMS AND CONDITIONS
0. Definitions.
"This License" refers to version 3 of the GNU General Public License.
"Copyright" also means copyright-like laws that apply to other kinds of
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"The Program" refers to any copyrightable work licensed under this
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An interactive user interface displays "Appropriate Legal Notices"
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1. Source Code.
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The Corresponding Source need not include anything that users
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The Corresponding Source for a work in source code form is that
same work.
2. Basic Permissions.
All rights granted under this License are granted for the term of
copyright on the Program, and are irrevocable provided the stated
conditions are met. This License explicitly affirms your unlimited
permission to run the unmodified Program. The output from running a
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You may convey verbatim copies of the Program's source code as you
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long as you offer spare parts or customer support for that product
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You may not propagate or modify a covered work except as expressly
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Termination of your rights under this section does not terminate the
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9. Acceptance Not Required for Having Copies.
You are not required to accept this License in order to receive or
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occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance. However,
nothing other than this License grants you permission to propagate or
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not accept this License. Therefore, by modifying or propagating a
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10. Automatic Licensing of Downstream Recipients.
Each time you convey a covered work, the recipient automatically
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propagate that work, subject to this License. You are not responsible
for enforcing compliance by third parties with this License.
An "entity transaction" is a transaction transferring control of an
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the predecessor has it or can get it with reasonable efforts.
You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License. For example, you may
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rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.
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A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based. The
work thus licensed is called the contributor's "contributor version".
A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
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In the following three paragraphs, a "patent license" is any express
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and the Corresponding Source of the work is not available for anyone
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then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
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consistent with the requirements of this License, to extend the patent
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covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.
If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
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receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.
A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License. You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
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parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
{one line to give the program's name and a brief idea of what it does.}
Copyright (C) {year} {name of author}
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
{project} Copyright (C) {year} {fullname}
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

17
Makefile
View File

@ -1,17 +0,0 @@
#
# Copyright 2009 Develer S.r.l. (http://www.develer.com/)
# All rights reserved.
#
# Author: Lorenzo Berni <duplo@develer.com>
#
# Set to 1 for verbose build output, 0 for terse output
V := 0
default: all
include bertos/config.mk
include Modem/Modem.mk
include bertos/rules.mk

8
Modem/.spec
View File

@ -1,8 +0,0 @@
name = 'empty preset'
advanced = True
description="""
<p>
This is a minimalist project, it just initializes the hardware of the
supported board and proposes an empty main.
<\p>
"""

90
Modem/Modem.mk
View File

@ -1,90 +0,0 @@
#
# Wizard autogenerated makefile.
# DO NOT EDIT, use the Modem_user.mk file instead.
#
# Constants automatically defined by the selected modules
Modem_DEBUG = 1
# Our target application
TRG += Modem
Modem_PREFIX = "/usr/bin/avr-"
Modem_SUFFIX = ""
Modem_SRC_PATH = Modem
Modem_HW_PATH = Modem
# Files automatically generated by the wizard. DO NOT EDIT, USE Modem_USER_CSRC INSTEAD!
Modem_WIZARD_CSRC = \
bertos/cpu/avr/drv/ser_avr.c \
bertos/cpu/avr/drv/ser_mega.c \
bertos/cpu/avr/drv/timer_avr.c \
bertos/cpu/avr/drv/timer_mega.c \
bertos/drv/ser.c \
bertos/drv/timer.c \
bertos/io/kfile.c \
bertos/mware/event.c \
bertos/mware/formatwr.c \
bertos/mware/hex.c \
bertos/struct/heap.c \
bertos/net/ax25.c \
bertos/algo/crc_ccitt.c \
#
# Files automatically generated by the wizard. DO NOT EDIT, USE Modem_USER_PCSRC INSTEAD!
Modem_WIZARD_PCSRC = \
bertos/mware/formatwr.c \
#
# Files automatically generated by the wizard. DO NOT EDIT, USE Modem_USER_CPPASRC INSTEAD!
Modem_WIZARD_CPPASRC = \
\
#
# Files automatically generated by the wizard. DO NOT EDIT, USE Modem_USER_CXXSRC INSTEAD!
Modem_WIZARD_CXXSRC = \
\
#
# Files automatically generated by the wizard. DO NOT EDIT, USE Modem_USER_ASRC INSTEAD!
Modem_WIZARD_ASRC = \
\
#
Modem_CPPFLAGS = -D'CPU_FREQ=(16000000UL)' -D'ARCH=(ARCH_DEFAULT)' -D'WIZ_AUTOGEN' -I$(Modem_HW_PATH) -I$(Modem_SRC_PATH) $(Modem_CPU_CPPFLAGS) $(Modem_USER_CPPFLAGS)
# Automatically generated by the wizard. PLEASE DO NOT EDIT!
Modem_LDFLAGS = $(Modem_CPU_LDFLAGS) $(Modem_WIZARD_LDFLAGS) $(Modem_USER_LDFLAGS)
# Automatically generated by the wizard. PLEASE DO NOT EDIT!
Modem_CPPAFLAGS = $(Modem_CPU_CPPAFLAGS) $(Modem_WIZARD_CPPAFLAGS) $(Modem_USER_CPPAFLAGS)
# Automatically generated by the wizard. PLEASE DO NOT EDIT!
Modem_CSRC = $(Modem_CPU_CSRC) $(Modem_WIZARD_CSRC) $(Modem_USER_CSRC)
# Automatically generated by the wizard. PLEASE DO NOT EDIT!
Modem_PCSRC = $(Modem_CPU_PCSRC) $(Modem_WIZARD_PCSRC) $(Modem_USER_PCSRC)
# Automatically generated by the wizard. PLEASE DO NOT EDIT!
Modem_CPPASRC = $(Modem_CPU_CPPASRC) $(Modem_WIZARD_CPPASRC) $(Modem_USER_CPPASRC)
# Automatically generated by the wizard. PLEASE DO NOT EDIT!
Modem_CXXSRC = $(Modem_CPU_CXXSRC) $(Modem_WIZARD_CXXSRC) $(Modem_USER_CXXSRC)
# Automatically generated by the wizard. PLEASE DO NOT EDIT!
Modem_ASRC = $(Modem_CPU_ASRC) $(Modem_WIZARD_ASRC) $(Modem_USER_ASRC)
# CPU specific flags and options, defined in the CPU definition files.
# Automatically generated by the wizard. PLEASE DO NOT EDIT!
Modem_MCU = atmega328p
Modem_CPU_CPPFLAGS = -Os -Ibertos/cpu/avr/
Modem_PROGRAMMER_CPU = atmega328p
Modem_STOPFLASH_SCRIPT = bertos/prg_scripts/avr/stopflash.sh
Modem_STOPDEBUG_SCRIPT = bertos/prg_scripts/none.sh
Modem_DEBUG_SCRIPT = bertos/prg_scripts/nodebug.sh
Modem_FLASH_SCRIPT = bertos/prg_scripts/avr/flash.sh
include $(Modem_SRC_PATH)/Modem_user.mk

47
Modem/Modem_user.mk
View File

@ -1,47 +0,0 @@
#
# User makefile.
# Edit this file to change compiler options and related stuff.
#
# Programmer interface configuration, see http://dev.bertos.org/wiki/ProgrammerInterface for help
Modem_PROGRAMMER_TYPE = none
Modem_PROGRAMMER_PORT = none
# Files included by the user.
Modem_USER_CSRC = \
$(Modem_SRC_PATH)/main.c \
$(Modem_HW_PATH)/hardware.c \
$(Modem_HW_PATH)/afsk.c \
$(Modem_HW_PATH)/protocol/SimpleSerial.c \
$(Modem_HW_PATH)/protocol/KISS.c \
#
# Files included by the user.
Modem_USER_PCSRC = \
#
# Files included by the user.
Modem_USER_CPPASRC = \
#
# Files included by the user.
Modem_USER_CXXSRC = \
#
# Files included by the user.
Modem_USER_ASRC = \
#
# Flags included by the user.
Modem_USER_LDFLAGS = \
#
# Flags included by the user.
Modem_USER_CPPAFLAGS = \
#
# Flags included by the user.
Modem_USER_CPPFLAGS = \
-fno-strict-aliasing \
-fwrapv \
#

741
Modem/afsk.c
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@ -1,741 +0,0 @@
//////////////////////////////////////////////////////
// First things first, all the includes we need //
//////////////////////////////////////////////////////
#include "afsk.h" // We need the header file for the modem
#include "config.h" // This stores basic configuration
#include "hardware.h" // Hardware functions are nice to have too :)
#include <drv/timer.h> // Timer driver from BertOS
#include <cpu/power.h> // Power management from BertOS
#include <cpu/pgm.h> // Access to PROGMEM from BertOS
#include <struct/fifobuf.h> // FIFO buffer implementation from BertOS
#include <string.h> // String operations, primarily used for memset function
extern unsigned long custom_preamble;
extern unsigned long custom_tail;
//////////////////////////////////////////////////////
// Definitions and some useful macros //
//////////////////////////////////////////////////////
// Sine table for Direct Digital Synthesis DAC
// Since it would be inefficient to calculate a sine value each
// time we process a sample, we store the values in program memory
// as a look-up table. We only need to store values for a quarter
// wave, since we can easily reconstruct the entire 512 values
// from only these 128 values.
#define SIN_LEN 512
static const uint8_t PROGMEM sin_table[] =
{
128, 129, 131, 132, 134, 135, 137, 138, 140, 142, 143, 145, 146, 148, 149, 151,
152, 154, 155, 157, 158, 160, 162, 163, 165, 166, 167, 169, 170, 172, 173, 175,
176, 178, 179, 181, 182, 183, 185, 186, 188, 189, 190, 192, 193, 194, 196, 197,
198, 200, 201, 202, 203, 205, 206, 207, 208, 210, 211, 212, 213, 214, 215, 217,
218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233,
234, 234, 235, 236, 237, 238, 238, 239, 240, 241, 241, 242, 243, 243, 244, 245,
245, 246, 246, 247, 248, 248, 249, 249, 250, 250, 250, 251, 251, 252, 252, 252,
253, 253, 253, 253, 254, 254, 254, 254, 254, 255, 255, 255, 255, 255, 255, 255,
}; STATIC_ASSERT(sizeof(sin_table) == SIN_LEN / 4);
// Calculate any sine value from quarter wave sine table
// The reason we declare this inline is to eliminate an extra
// call for the code. The code is essentially inserted directly
// in the calling functions code. This makes stuff faster :)
INLINE uint8_t sinSample(uint16_t i) {
// Make sure that the index asked for is in the correct range
ASSERT(i < SIN_LEN);
// First we make a new index value, and restrict it to only
// the first half-wave of the sine.
uint16_t newI = i % (SIN_LEN/2);
// We then check if this new index is larger than the first
// quarter wave. If it is, we don't have the value for this
// index directly, but we can figure it out by subtracting
// the new index from a half wave, effectively wrapping us
// back into the same place on the wave, whithin the quarter
// wave we have data for, only with the inverse sign. If the
// index was actually in the first quarter, we don't need to
// do anything.
newI = (newI >= (SIN_LEN/4)) ? (SIN_LEN/2 - newI -1) : newI;
// Now we just need to read the value from program memory
uint8_t sine = pgm_read8(&sin_table[newI]);
// And flip the sign (+/-) if the original index was greater
// than a half wave.
return (i >= (SIN_LEN/2)) ? (255 - sine) : sine;
}
// A very basic macro that just checks whether the last bit
// of a whatever is passed into it differ. This is used in the
// next macro.
#define BITS_DIFFER(bits1, bits2) (((bits1)^(bits2)) & 0x01)
// This macro is used to look for signal transitions. We need
// to identify these to keep the phase of our demodulator in
// sync with the incoming signal. Each time we find a signal
// transition on the physical medium, we adjust the phase of
// the demodulator.
// The macro effectively looks at the two least significant
// bits in a stream and returns true if they differ.
#define TRANSITION_FOUND(bits) BITS_DIFFER((bits), (bits) >> 1)
// We use this macro to check if the signal transitioned
// from one bit (tone) to another. This is used in the phase
// synchronisation. We look at the last four bits in the
// stream of demodulated bits and if they differ in sets of
// two bits, we assume a signal transition occured. We look
// at pairs of bits to eliminate false positives where a
// single erroneously demodulated bit will trigger an
// incorrect phase syncronisation.
#define DUAL_XOR(bits1, bits2) ((((bits1)^(bits2)) & 0x03) == 0x03)
#define SIGNAL_TRANSITIONED(bits) DUAL_XOR((bits), (bits) >> 2)
// Phase sync constants
#define PHASE_BITS 8 // How much to increment phase counter each sample
#define PHASE_INC 1 // Nudge by an eigth of a sample each adjustment
#define PHASE_MAX (SAMPLESPERBIT * PHASE_BITS) // Resolution of our phase counter = 64
#define PHASE_THRESHOLD (PHASE_MAX / 2) // Target transition point of our phase window
// Modulation constants
#define MARK_FREQ 1200 // The tone frequency signifying a binary one
#define SPACE_FREQ 2200 // The tone frequency signifying a binary zero
// We calculate the amount we need to increment the index
// in our sine table for each sample of the two tones
#define MARK_INC (uint16_t)(DIV_ROUND(SIN_LEN * (uint32_t)MARK_FREQ, CONFIG_AFSK_DAC_SAMPLERATE))
#define SPACE_INC (uint16_t)(DIV_ROUND(SIN_LEN * (uint32_t)SPACE_FREQ, CONFIG_AFSK_DAC_SAMPLERATE))
// HDLC flag bytes
#define HDLC_FLAG 0x7E // An HDLC_FLAG is used to signify the start or end of a frame
#define HDLC_RESET 0x7F // An HDLC_RESET is used to abruptly stop or reset a transmission
#define AX25_ESC 0x1B // We use the AX.25 escape character for escaping bit sequences in
// the actual data. This is similar to escaping an " character in a
// string enclosed by "s.
// Check that sample rate is divisible by bitrate.
// If this is not the case, all of our algorithms will
// fail horribly and we will cry.
STATIC_ASSERT(!(CONFIG_AFSK_DAC_SAMPLERATE % BITRATE));
// How many samples it takes to encode or decode one bit
// on the physical medium.
#define DAC_SAMPLESPERBIT (CONFIG_AFSK_DAC_SAMPLERATE / BITRATE)
//////////////////////////////////////////////////////
// Link Layer Control and Demodulation //
//////////////////////////////////////////////////////
// hdlcParse /////////////////////////////////////////
// This function looks at the raw bits demodulated from
// the physical medium and tries to parse actual data
// packets from the bitstream. Note that at this level,
// we don't really try to discriminate when a packet
// starts or ends, or where the payload is. We only try
// to detect that a transmission is taking place, then
// synchronise to the start and end of the transmitted
// bytes, and push these up to the data-link layer, in
// this example the MP.x protocol. It is then the
// protocols job to actually recreate the full packet.
// Also note that the data is not "pushed" per se, but
// stored in a FIFO buffer, that the protocol must
// continously read to recreate the received packets.
static bool hdlcParse(Hdlc *hdlc, bool bit, FIFOBuffer *fifo) {
// Initialise a return value. We start with the
// assumption that all is going to end well :)
bool ret = true;
// Bitshift our byte of demodulated bits to
// the left by one bit, to make room for the
// next incoming bit
hdlc->demodulatedBits <<= 1;
// And then put the newest bit from the
// demodulator into the byte.
hdlc->demodulatedBits |= bit ? 1 : 0;
// Now we'll look at the last 8 received bits, and
// check if we have received a HDLC flag (01111110)
if (hdlc->demodulatedBits == HDLC_FLAG) {
// If we have, check that our output buffer is
// not full.
if (!fifo_isfull(fifo)) {
// If it isn't, we'll push the HDLC_FLAG into
// the buffer and indicate that we are now
// receiving data. For bling we also turn
// on the RX LED.
fifo_push(fifo, HDLC_FLAG);
hdlc->receiving = true;
LED_RX_ON();
} else {
// If the buffer is full, we have a problem
// and abort by setting the return value to
// false and stopping the here.
ret = false;
hdlc->receiving = false;
LED_RX_OFF();
}
// Everytime we receive a HDLC_FLAG, we reset the
// storage for our current incoming byte and bit
// position in that byte. This effectively
// synchronises our parsing to the start and end
// of the received bytes.
hdlc->currentByte = 0;
hdlc->bitIndex = 0;
return ret;
}
// Check if we have received a RESET flag (01111111)
// In this comparison we also detect when no transmission
// (or silence) is taking place, and the demodulator
// returns an endless stream of zeroes. Due to the NRZ
// coding, the actual bits send to this function will
// be an endless stream of ones, which this AND operation
// will also detect.
if ((hdlc->demodulatedBits & HDLC_RESET) == HDLC_RESET) {
// If we have, something probably went wrong at the
// transmitting end, and we abort the reception.
hdlc->receiving = false;
LED_RX_OFF();
return ret;
}
// If we have not yet seen a HDLC_FLAG indicating that
// a transmission is actually taking place, don't bother
// with anything.
if (!hdlc->receiving)
return ret;
// First check if what we are seeing is a stuffed bit.
// Since the different HDLC control characters like
// HDLC_FLAG, HDLC_RESET and such could also occur in
// a normal data stream, we employ a method known as
// "bit stuffing". All control characters have more than
// 5 ones in a row, so if the transmitting party detects
// this sequence in the _data_ to be transmitted, it inserts
// a zero to avoid the receiving party interpreting it as
// a control character. Therefore, if we detect such a
// "stuffed bit", we simply ignore it and wait for the
// next bit to come in.
//
// We do the detection by applying an AND bit-mask to the
// stream of demodulated bits. This mask is 00111111 (0x3f)
// if the result of the operation is 00111110 (0x3e), we
// have detected a stuffed bit.
if ((hdlc->demodulatedBits & 0x3f) == 0x3e)
return ret;
// If we have an actual 1 bit, push this to the current byte
// If it's a zero, we don't need to do anything, since the
// bit is initialized to zero when we bitshifted earlier.
if (hdlc->demodulatedBits & 0x01)
hdlc->currentByte |= 0x80;
// Increment the bitIndex and check if we have a complete byte
if (++hdlc->bitIndex >= 8) {
// If we have a HDLC control character, put a AX.25 escape
// in the received data. We know we need to do this,
// because at this point we must have already seen a HDLC
// flag, meaning that this control character is the result
// of a bitstuffed byte that is equal to said control
// character, but is actually part of the data stream.
// By inserting the escape character, we tell the protocol
// layer that this is not an actual control character, but
// data.
if ((hdlc->currentByte == HDLC_FLAG ||
hdlc->currentByte == HDLC_RESET ||
hdlc->currentByte == AX25_ESC)) {
// We also need to check that our received data buffer
// is not full before putting more data in
if (!fifo_isfull(fifo)) {
fifo_push(fifo, AX25_ESC);
} else {
// If it is, abort and return false
hdlc->receiving = false;
LED_RX_OFF();
ret = false;
}
}
// Push the actual byte to the received data FIFO,
// if it isn't full.
if (!fifo_isfull(fifo)) {
fifo_push(fifo, hdlc->currentByte);
} else {
// If it is, well, you know by now!
hdlc->receiving = false;
LED_RX_OFF();
ret = false;
}
// Wipe received byte and reset bit index to 0
hdlc->currentByte = 0;
hdlc->bitIndex = 0;
} else {
// We don't have a full byte yet, bitshift the byte
// to make room for the next bit
hdlc->currentByte >>= 1;
}
return ret;
}
// adcISR ////////////////////////////////////////////
// This is the Interrupt Service Routine for the
// Analog to Digital Conversion. It is called 9600
// times each second to analyze the sample taken from
// the physical medium. The job of this routine is
// to detect whether we have a "mark" or "space"
// frequency present on the baseband (the physical
// medium). The result of this analysis will then
// be passed to the HDLC parser in form of a 1 or a 0
void afsk_adc_isr(Afsk *afsk, int8_t currentSample) {
// To determine the received frequency, and thereby
// the bit of the sample, we multiply the sample by
// a sample delayed by (samples per bit / 2).
// We then lowpass-filter the samples with a
// Chebyshev filter. The lowpass filtering serves
// to "smooth out" the variations in the samples.
afsk->iirX[0] = afsk->iirX[1];
afsk->iirX[1] = ((int8_t)fifo_pop(&afsk->delayFifo) * currentSample) >> 2;
afsk->iirY[0] = afsk->iirY[1];
afsk->iirY[1] = afsk->iirX[0] + afsk->iirX[1] + (afsk->iirY[0] >> 1); // Chebyshev filter
// We put the sampled bit in a delay-line:
// First we bitshift everything 1 left
afsk->sampledBits <<= 1;
// And then add the sampled bit to our delay line
afsk->sampledBits |= (afsk->iirY[1] > 0) ? 1 : 0;
// Put the current raw sample in the delay FIFO
fifo_push(&afsk->delayFifo, currentSample);
// We need to check whether there is a signal transition.
// If there is, we can recalibrate the phase of our
// sampler to stay in sync with the transmitter. A bit of
// explanation is required to understand how this works.
// Since we have PHASE_MAX/PHASE_BITS = 8 samples per bit,
// we employ a phase counter (currentPhase), that increments
// by PHASE_BITS everytime a sample is captured. When this
// counter reaches PHASE_MAX, it wraps around by modulus
// PHASE_MAX. We then look at the last three samples we
// captured and determine if the bit was a one or a zero.
//
// This gives us a "window" looking into the stream of
// samples coming from the ADC. Sort of like this:
//
// Past Future
// 0000000011111111000000001111111100000000
// |________|
// ||
// Window
//
// Every time we detect a signal transition, we adjust
// where this window is positioned little. How much we
// adjust it is defined by PHASE_INC. If our current phase
// phase counter value is less than half of PHASE_MAX (ie,
// the window size) when a signal transition is detected,
// add PHASE_INC to our phase counter, effectively moving
// the window a little bit backward (to the left in the
// illustration), inversely, if the phase counter is greater
// than half of PHASE_MAX, we move it forward a little.
// This way, our "window" is constantly seeking to position
// it's center at the bit transitions. Thus, we synchronise
// our timing to the transmitter, even if it's timing is
// a little off compared to our own.
if (SIGNAL_TRANSITIONED(afsk->sampledBits)) {
if (afsk->currentPhase < PHASE_THRESHOLD) {
afsk->currentPhase += PHASE_INC;
} else {
afsk->currentPhase -= PHASE_INC;
}
}
// We increment our phase counter
afsk->currentPhase += PHASE_BITS;
// Check if we have reached the end of
// our sampling window.
if (afsk->currentPhase >= PHASE_MAX) {
// If we have, wrap around our phase
// counter by modulus
afsk->currentPhase %= PHASE_MAX;
// Bitshift to make room for the next
// bit in our stream of demodulated bits
afsk->actualBits <<= 1;
// We determine the actual bit value by reading
// the last 3 sampled bits. If there is three or
// more 1's, we will assume that the transmitter
// sent us a one, otherwise we assume a zero
uint8_t bits = afsk->sampledBits & 0x07;
if (bits == 0x07 || // 111
bits == 0x06 || // 110
bits == 0x05 || // 101
bits == 0x03 // 011
) {
afsk->actualBits |= 1;
}
//// Alternative using five bits ////////////////
// uint8_t bits = afsk->sampledBits & 0x0f;
// uint8_t c = 0;
// c += bits & BV(1);
// c += bits & BV(2);
// c += bits & BV(3);
// c += bits & BV(4);
// c += bits & BV(5);
// if (c >= 3) afsk->actualBits |= 1;
/////////////////////////////////////////////////
// Now we can pass the actual bit to the HDLC parser.
// We are using NRZ coding, so if 2 consecutive bits
// have the same value, we have a 1, otherwise a 0.
// We use the TRANSITION_FOUND function to determine this.
//
// This is smart in combination with bit stuffing,
// since it ensures a transmitter will never send more
// than five consecutive 1's. When sending consecutive
// ones, the signal stays at the same level, and if
// this happens for longer periods of time, we would
// not be able to synchronize our phase to the transmitter
// and would start experiencing "bit slip".
//
// By combining bit-stuffing with NRZ coding, we ensure
// that the signal will regularly make transitions
// that we can use to synchronize our phase.
//
// We also check the return of the Link Control parser
// to check if an error occured.
if (!hdlcParse(&afsk->hdlc, !TRANSITION_FOUND(afsk->actualBits), &afsk->rxFifo)) {
afsk->status |= RX_OVERRUN;
}
}
}
//////////////////////////////////////////////////////
// Signal modulation and DAC //
//////////////////////////////////////////////////////
// Defines how many consecutive ones we send
// before we need to "stuff" in a zero
#define BIT_STUFF_LEN 5
// A macro for switching what tone is being
// synthesized by the DAC. We basically just
// change how quickly we go through the sine
// table each time we send out a sample. This
// is done by changing the phaseInc variable
#define SWITCH_TONE(inc) (((inc) == MARK_INC) ? SPACE_INC : MARK_INC)
// This function starts the transmission
static void afsk_txStart(Afsk *afsk) {
if (!afsk->sending) {
// Initialize the phase increment to
// that of the mark frequency (zero)
afsk->phaseInc = MARK_INC;
// Reset the phase accumulator to 0
afsk->phaseAcc = 0;
// And also the bitstuff counter
afsk->bitstuffCount = 0;
// Indicate we are now sending
afsk->sending = true;
// And turn on the blingy LED
LED_TX_ON();
// We also need to calculate how many HDLC_FLAG
// bytes we need to send in preamble
afsk->preambleLength = DIV_ROUND(custom_preamble * BITRATE, 8000);
//afsk->preambleLength = DIV_ROUND(CONFIG_AFSK_PREAMBLE_LEN * BITRATE, 8000);
AFSK_DAC_IRQ_START();
}
// We make the same calculation for the tail length,
// but this needs to be atomic, since the txStart
// function could potentially be called while we
// are already transmitting.
ATOMIC(afsk->tailLength = DIV_ROUND(custom_tail * BITRATE, 8000));
//ATOMIC(afsk->tailLength = DIV_ROUND(CONFIG_AFSK_TRAILER_LEN * BITRATE, 8000));
}
// This is the DAC ISR, called at sampling rate whenever the DAC IRQ is on.
// It modulates the data to be transmitted and returns a value directly
// for output on the DAC
uint8_t afsk_dac_isr(Afsk *afsk) {
// Check whether we are at the beginning of a sample
if (afsk->sampleIndex == 0) {
// If we are, we should figure out what we are
// actually going to modulate and transmit :)
if (afsk->txBit == 0) {
// txBit is a bitmask that is ANDed to the
// byte we are sending. It is bitshifted one
// position left each time we shift the next
// bit. If it is 0, we know we are at the
// beginning of the next byte, and nothing
// has been transmitted yet.
// If TX FIFO is empty and tail-length has decremented to 0
// we are done, stop the IRQ and reset
if (fifo_isempty(&afsk->txFifo) && afsk->tailLength == 0) {
AFSK_DAC_IRQ_STOP();
afsk->sending = false;
LED_TX_OFF();
return 0;
} else {
// Reset the bitstuff counter if we have just sent
// a bitstuffed byte
if (!afsk->bitStuff) afsk->bitstuffCount = 0;
// Reset bitstuff indicator to true, signifying
// that it's ok to bit stuff.
afsk->bitStuff = true;
// Check if we are in preamble or tail
if (afsk->preambleLength == 0) {
// We are not in preamble
if (fifo_isempty(&afsk->txFifo)) {
// If the TX buffer is empty, we must
// be in the TX tail then.
// Decrement the tail counter and send
// a HDLC_FLAG
afsk->tailLength--;
afsk->currentOutputByte = HDLC_FLAG;
} else {
// If preamble is already transmitted and TX
// buffer is not empty, we should get a byte
// for transmission
afsk->currentOutputByte = fifo_pop(&afsk->txFifo);
}
} else {
// We are in preamble. We'll decrement
// the preamble counter and transmit a
// HDLC_FLAG
afsk->preambleLength--;
afsk->currentOutputByte = HDLC_FLAG;
}
// This handles escape sequences and control
// characters. First we check if the current
// byte is an escape character. If it is, we
// know the next byte, even though it looks
// like an HDLC control character, in fact is
// not. Therefore we'll fetch it and transmit
// it as data using bit stuffing.
if (afsk->currentOutputByte == AX25_ESC) {
// First make sure that the TX buffer is
// not empty for some strange reason
if (fifo_isempty(&afsk->txFifo)) {
AFSK_DAC_IRQ_STOP();
afsk->sending = false;
LED_TX_OFF();
return 0;
} else {
// If it is not, fetch the next byte
afsk->currentOutputByte = fifo_pop(&afsk->txFifo);
}
} else if (afsk->currentOutputByte == HDLC_FLAG || afsk->currentOutputByte == HDLC_RESET) {
// If there was not an escape character and
// this byte is an HDLC control character,
// we know that it is an _actual_ control
// character, and we indicate that it should
// not be bitstuffed.
afsk->bitStuff = false;
}
}
// Since we are at the beginning of a byte,
// we'll initialize the txBit mask to:
// 00000001. It will then be bit-shifted one
// position to the left each time we send the
// next bit. By ANDing this mask to the byte
// we are sending, we can quickly figure out
// what tone we should transmit. For example:
//
// If we are sending bit number 4 of the
// byte: 01101011
// The bit mask would be: 00001000
// If we AND the byte and the
// mask, we get: 00001000
// Since this is not zero, we know we should
// transmit a one.
afsk->txBit = 0x01;
}
// First we need to check for bit-stuffing
if (afsk->bitStuff && afsk->bitstuffCount >= BIT_STUFF_LEN) {
// If we are allowed to bit-stuff, and we have
// reached the maximum number of consecutive
// ones, we'll reset the bit-stuff counter and
// insert a zero into the bitstream
afsk->bitstuffCount = 0;
afsk->phaseInc = SWITCH_TONE(afsk->phaseInc);
} else {
// If we don't need to bit-stuff now, we can get
// on with the actual transmission.
//
// We are using NRZ so if we want to transmit a 1
// the modulated signal will stay the same. For a 0
// we make the signal transition.
if (afsk->currentOutputByte & afsk->txBit) {
// We don't do anything, aka stay on the same
// tone as before. We have sent one 1, so we
// increment the bitstuff counter.
afsk->bitstuffCount++;
} else {
// We switch the tone, and reset the bitstuff
// counter, since we have now transmitted a
// zero
afsk->bitstuffCount = 0;
afsk->phaseInc = SWITCH_TONE(afsk->phaseInc);
}
// Bitshift the mast to allow for the next
// bit in the byte to be transmitted
afsk->txBit <<= 1;
}
// We set sampleIndex to DAC_SAMPLESPERBIT,
// so we will transmit this bit for the number
// of samples one bit requires to transmit at
// the chosen bitrate.
afsk->sampleIndex = DAC_SAMPLESPERBIT;
}
// We increment the phase accumulator
// by the amount needed for the tone
afsk->phaseAcc += afsk->phaseInc;
// We then make sure that we have not
// exceeded the length of our sine table
afsk->phaseAcc %= SIN_LEN;
// Finally we decrement the sample counter
afsk->sampleIndex--;
// ... and return the sample to for it to
// be written out
return sinSample(afsk->phaseAcc);
}
//////////////////////////////////////////////////////
// File operation functions for read/write //
// These functions make the "class" act like a file //
// pointer, which can be read from or written to. //
// Handy for sending and receiving data :) //
//////////////////////////////////////////////////////
// Read from the modem
static size_t afsk_read(KFile *fd, void *_buf, size_t size) {
Afsk *afsk = AFSK_CAST(fd);
uint8_t *buffer = (uint8_t *)_buf;
#if CONFIG_AFSK_RXTIMEOUT == 0
while (size-- && !fifo_isempty_locked(&afsk->rxFifo))
#else
while (size--)
#endif
{
#if CONFIG_AFSK_RXTIMEOUT != -1
ticks_t start = timer_clock();
#endif
while (fifo_isempty_locked(&afsk->rxFifo)) {
cpu_relax();
#if CONFIG_AFSK_RXTIMEOUT != -1
if (timer_clock() - start > ms_to_ticks(CONFIG_AFSK_RXTIMEOUT)) {
return buffer - (uint8_t *)_buf;
}
#endif
}
*buffer++ = fifo_pop_locked(&afsk->rxFifo);
}
return buffer - (uint8_t *)_buf;
}
// Write to the modem
static size_t afsk_write(KFile *fd, const void *_buf, size_t size) {
Afsk *afsk = AFSK_CAST(fd);
const uint8_t *buf = (const uint8_t *)_buf;
while (size--) {
while (fifo_isfull_locked(&afsk->txFifo)) {
cpu_relax();
}
fifo_push_locked(&afsk->txFifo, *buf++);
afsk_txStart(afsk);
}
return buf - (const uint8_t *)_buf;
}
// Waits for the write operation to finish
static int afsk_flush(KFile *fd) {
Afsk *afsk = AFSK_CAST(fd);
while (afsk->sending) {
cpu_relax();
}
return 0;
}
// Check whether there was any errors
// while reading or writing
static int afsk_error(KFile *fd) {
Afsk *afsk = AFSK_CAST(fd);
int err;
ATOMIC(err = afsk->status);
return err;
}
// Allows resetting the error-state
static void afsk_clearerr(KFile *fd) {
Afsk *afsk = AFSK_CAST(fd);
ATOMIC(afsk->status = 0);
}
//////////////////////////////////////////////////////
// Modem Initialization //
//////////////////////////////////////////////////////
void afsk_init(Afsk *afsk, int _adcPin) {
// Allocate memory for struct
memset(afsk, 0, sizeof(*afsk));
// Configure ADC pin
afsk->adcPin = _adcPin;
// Initialise phase increment to that
// of the mark frequency
afsk->phaseInc = MARK_INC;
// Initialize FIFO buffers
fifo_init(&afsk->delayFifo, (uint8_t *)afsk->delayBuf, sizeof(afsk->delayBuf));
fifo_init(&afsk->rxFifo, afsk->rxBuf, sizeof(afsk->rxBuf));
fifo_init(&afsk->txFifo, afsk->txBuf, sizeof(afsk->txBuf));
// Fill delay FIFO with zeroes
for (int i = 0; i<SAMPLESPERBIT / 2; i++) {
fifo_push(&afsk->delayFifo, 0);
}
// Initialize hardware
AFSK_ADC_INIT(_adcPin, afsk);
AFSK_DAC_INIT();
LED_TX_INIT();
LED_RX_INIT();
// And register the modem file-pointer
// functions for reading from and
// writing to it.
DB(afsk->fd._type = KFT_AFSK);
afsk->fd.write = afsk_write;
afsk->fd.read = afsk_read;
afsk->fd.flush = afsk_flush;
afsk->fd.error = afsk_error;
afsk->fd.clearerr = afsk_clearerr;
}

120
Modem/afsk.h
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@ -1,120 +0,0 @@
//////////////////////////////////////////////////////
// First things first, all the includes we need //
//////////////////////////////////////////////////////
#ifndef FSK_MODEM_H
#define FSK_MODEM_H
#include "config.h" // Various configuration values
#include "hardware.h" // Hardware functions
#include <cfg/compiler.h> // Compiler info from BertOS
#include <struct/fifobuf.h> // FIFO buffer implementation from BertOS
#include <io/kfile.h> // The BertOS KFile interface. This is
// used for letting other functions read
// from or write to the modem like a
// file descriptor.
//////////////////////////////////////////////////////
// Our type definitions and function declarations //
//////////////////////////////////////////////////////
#define SAMPLERATE 9600 // The rate at which we are sampling and synthesizing
#define BITRATE 1200 // The actual bitrate at baseband. This is the baudrate.
#define SAMPLESPERBIT (SAMPLERATE / BITRATE) // How many DAC/ADC samples constitute one bit (8).
// This defines an errortype for a receive-
// buffer overrun.
#define RX_OVERRUN BV(0)
// This struct defines a Hdlc parser. It will let
// us parse the raw bits coming in from the modem
// and synchronise to byte boundaries.
typedef struct Hdlc
{
uint8_t demodulatedBits; // Incoming bitstream from demodulator
uint8_t bitIndex; // The current received bit in the current received byte
uint8_t currentByte; // The byte we're currently receiving
bool receiving; // Whether or not where actually receiving data (or just noise ;P)
} Hdlc;
// This is our primary modem struct. It defines
// all the values we need to modulate and
// demodulate data from the physical medium.
typedef struct Afsk
{
KFile fd; // A file descriptor for reading from and
// writing to the modem
// I/O hardware pins
int adcPin; // Pin for incoming signal
// General values
Hdlc hdlc; // We need a link control structure
uint16_t preambleLength; // Length of sync preamble
uint16_t tailLength; // Length of transmission tail
// Modulation values
uint8_t sampleIndex; // Current sample index for outgoing bit
uint8_t currentOutputByte; // Current byte to be modulated
uint8_t txBit; // Mask of current modulated bit
bool bitStuff; // Whether bitstuffing is allowed
uint8_t bitstuffCount; // Counter for bit-stuffing
uint16_t phaseAcc; // Phase accumulator
uint16_t phaseInc; // Phase increment per sample
FIFOBuffer txFifo; // FIFO for transmit data
uint8_t txBuf[CONFIG_AFSK_TX_BUFLEN]; // Actial data storage for said FIFO
volatile bool sending; // Set when modem is sending
// Demodulation values
FIFOBuffer delayFifo; // Delayed FIFO for frequency discrimination
int8_t delayBuf[SAMPLESPERBIT / 2 + 1]; // Actual data storage for said FIFO
FIFOBuffer rxFifo; // FIFO for received data
uint8_t rxBuf[CONFIG_AFSK_RX_BUFLEN]; // Actual data storage for said FIFO
int16_t iirX[2]; // IIR Filter X cells
int16_t iirY[2]; // IIR Filter Y cells
uint8_t sampledBits; // Bits sampled by the demodulator (at ADC speed)
int8_t currentPhase; // Current phase of the demodulator
uint8_t actualBits; // Actual found bits at correct bitrate
volatile int status; // Status of the modem, 0 means OK
} Afsk;
// Explanation nessecary for this. BertOS uses an
// object-oriented approach for handling "file-like"
// transactions (yes, we are using C :P). What we are
// doing here is defining a specific "file type" for
// the standard KFile to identify the modem as a "file"
// that can be read from and written to.
#define KFT_AFSK MAKE_ID('F', 'S', 'K', 'M')
// We then make a macro that can "typecast" a generic
// KFile file-pointer to an Afsk "object". This lets
// other pieces of code read from and write to the AFSK
// "objects" buffers with the standard KFile operations.
// If this seems weird and confusing, check out the
// BertOS KFile explanation at:
// http://www.bertos.org/use/tutorial-front-page/drivers-kfile-interface
INLINE Afsk *AFSK_CAST(KFile *fd) {
// We need to assert that the what we are trying
// to read/write is actually an AFSK "object",
// identified by the KFT_AFSK constant
ASSERT(fd->_type == KFT_AFSK);
return (Afsk *)fd;
}
// Declare Interrupt Service Routines
// and initialization functions
void afsk_adc_isr(Afsk *af, int8_t sample);
uint8_t afsk_dac_isr(Afsk *af);
void afsk_init(Afsk *af, int adc_ch);
#endif

65
Modem/cfg/cfg_formatwr.h
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@ -1,65 +0,0 @@
/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2008 Develer S.r.l. (http://www.develer.com/)
* All Rights Reserved.
* -->
*
* \brief Configuration file for formatted write module.
*
* \author Daniele Basile <asterix@develer.com>
*/
#ifndef CFG_FORMATWR_H
#define CFG_FORMATWR_H
/**
* printf()-style formatter configuration.
* $WIZ$ type = "enum"; value_list = "printf_list"
*
* \sa PRINTF_DISABLED
* \sa PRINTF_NOMODIFIERS
* \sa PRINTF_REDUCED
* \sa PRINTF_NOFLOAT
* \sa PRINTF_FULL
*/
#define CONFIG_PRINTF PRINTF_FULL
/**
* Size of buffer to format "%" sequences in printf.
*
* Warning: no check on buffer size is done when formatting, be careful especially
* with big numbers and %f formatting.
*
* $WIZ$ type = "int"
* $WIZ$ min = 4
*/
#define CONFIG_FRMWRI_BUFSIZE 134
#endif /* CFG_FORMATWR_H */

61
Modem/cfg/cfg_kfile.h
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@ -1,61 +0,0 @@
/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2008 Develer S.r.l. (http://www.develer.com/)
*
* -->
*
* \brief Configuration file for KFile interface module.
*
* \author Daniele Basile <asterix@develer.com>
*/
#ifndef CFG_KFILE_H
#define CFG_KFILE_H
/**
* Module logging level.
* $WIZ$ type = "enum"
* $WIZ$ value_list = "log_level"
*/
#define KFILE_LOG_LEVEL LOG_LVL_INFO
/**
* Module logging format.
* $WIZ$ type = "enum"
* $WIZ$ value_list = "log_format"
*/
#define KFILE_LOG_FORMAT LOG_FMT_TERSE
/**
* Enable the gets function with echo.
* $WIZ$ type = "boolean"
*/
#define CONFIG_KFILE_GETS 0
#endif /* CFG_KFILE_H */

47
Modem/cfg/cfg_monitor.h
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@ -1,47 +0,0 @@
/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2001, 2004 Develer S.r.l. (http://www.develer.com/)
* Copyright 1999, 2000, 2001, 2008 Bernie Innocenti <bernie@codewiz.org>
* -->
*
* \brief Kernel monitor configuration parameters
*
* \author Bernie Innocenti <bernie@codewiz.org>
*/
#ifndef CFG_MONITOR_H
#define CFG_MONITOR_H
/**
* Process monitor.
* $WIZ$ type = "autoenabled"
*/
#define CONFIG_KERN_MONITOR 0
#endif /* CFG_MONITOR_H */

113
Modem/cfg/cfg_proc.h
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@ -1,113 +0,0 @@
/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2001, 2004 Develer S.r.l. (http://www.develer.com/)
* Copyright 1999, 2000, 2001, 2008 Bernie Innocenti <bernie@codewiz.org>
* -->
*
* \brief Kernel configuration parameters
*
* \author Bernie Innocenti <bernie@codewiz.org>
*/
#ifndef CFG_PROC_H
#define CFG_PROC_H
/**
* Enable the multithreading kernel.
*
* $WIZ$ type = "autoenabled"
*/
#define CONFIG_KERN 0
/**
* Kernel interrupt supervisor. WARNING: Experimental, still incomplete!
* $WIZ$ type = "boolean"
* $WIZ$ supports = "False"
*/
#define CONFIG_KERN_IRQ 0
/**
* Preemptive process scheduling.
*
* $WIZ$ type = "boolean"
* $WIZ$ conditional_deps = "timer"
*/
#define CONFIG_KERN_PREEMPT 0
/**
* Time sharing quantum (a prime number prevents interference effects) [ms].
*
* $WIZ$ type = "int"
* $WIZ$ min = 1
*/
#define CONFIG_KERN_QUANTUM 11
/**
* Priority-based scheduling policy.
* $WIZ$ type = "boolean"
*/
#define CONFIG_KERN_PRI 1
/**
* Priority-inheritance protocol.
* $WIZ$ type = "boolean"
*/
#define CONFIG_KERN_PRI_INHERIT 0
/**
* Dynamic memory allocation for processes.
* $WIZ$ type = "boolean"
* $WIZ$ conditional_deps = "heap"
*/
#define CONFIG_KERN_HEAP 0
/**
* Size of the dynamic memory pool used by processes.
* $WIZ$ type = "int"
* $WIZ$ min = 0
*/
#define CONFIG_KERN_HEAP_SIZE 2048L
/**
* Module logging level.
*
* $WIZ$ type = "enum"
* $WIZ$ value_list = "log_level"
*/
#define KERN_LOG_LEVEL LOG_LVL_ERR
/**
* Module logging format.
*
* $WIZ$ type = "enum"
* $WIZ$ value_list = "log_format"
*/
#define KERN_LOG_FORMAT LOG_FMT_VERBOSE
#endif /* CFG_PROC_H */

47
Modem/cfg/cfg_signal.h
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@ -1,47 +0,0 @@
/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2001, 2004 Develer S.r.l. (http://www.develer.com/)
* Copyright 1999, 2000, 2001, 2008 Bernie Innocenti <bernie@codewiz.org>
* -->
*
* \brief Kernel signals configuration parameters
*
* \author Bernie Innocenti <bernie@codewiz.org>
*/
#ifndef CFG_SIGNAL_H
#define CFG_SIGNAL_H
/**
* Inter-process signals.
* $WIZ$ type = "autoenabled"
*/
#define CONFIG_KERN_SIGNALS 0
#endif /* CFG_SIGNAL_H */

47
Modem/cfg/cfg_wdt.h
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@ -1,47 +0,0 @@
/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2008 Develer S.r.l. (http://www.develer.com/)
* All Rights Reserved.
* -->
*
* \brief Configuration file for watchdog module.
*
*
* \author Daniele Basile <asterix@develer.com>
*/
#ifndef CFG_WDT_H
#define CFG_WDT_H
/// Enable watchdog timer. $WIZ$ type = "autoenabled"
#define CONFIG_WATCHDOG 0
#endif /* CFG_WDT_H */

36
Modem/config.h
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@ -1,36 +0,0 @@
#ifndef FSK_CFG
#define FSK_CFG
// Serial options
#define PROTOCOL_SIMPLE_SERIAL 0x01
#define PROTOCOL_KISS 0x02
// Which serial protocol we want the modem to use
#define SERIAL_PROTOCOL PROTOCOL_SIMPLE_SERIAL
//#define SERIAL_PROTOCOL PROTOCOL_KISS
// Enable P-persistent CSMA
#define CSMA_ENABLE true
// Debug & test options
#define SERIAL_DEBUG false
#define PASSALL true
#define AUTOREPLY false
// Modem options
#define TX_MAXWAIT 2UL // How many milliseconds should pass with no
// no incoming data before it is transmitted
#define CONFIG_AFSK_RX_BUFLEN 64 // The size of the modems receive buffer
#define CONFIG_AFSK_TX_BUFLEN 64 // The size of the modems transmit buffer
#define CONFIG_AFSK_DAC_SAMPLERATE 9600 // The samplerate of the DAC. Note that
// changing it here will not change the
// actual sample rate. It is defined here
// so various functions can use it.
#define CONFIG_AFSK_RXTIMEOUT 0 // How long a read operation from the modem
// will wait for data before timing out.
#define CONFIG_AFSK_PREAMBLE_LEN 350UL // The length of the packet preamble in milliseconds
#define CONFIG_AFSK_TRAILER_LEN 50UL // The length of the packet tail in milliseconds
#endif

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Modem/hardware.c
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//////////////////////////////////////////////////////
// First things first, all the includes we need //
//////////////////////////////////////////////////////
#include "hardware.h" // We need the header for this code
#include "afsk.h" // We also need to know about the AFSK modem
#include <cpu/irq.h> // Interrupt functions from BertOS
#include <avr/io.h> // AVR IO functions from BertOS
#include <avr/interrupt.h> // AVR interrupt functions from BertOS
// A reference to our modem "object"
static Afsk *modem;
//////////////////////////////////////////////////////
// And now for the actual hardware functions //
//////////////////////////////////////////////////////
// M1 correction = 9500
// M2 correction = 40000
#define FREQUENCY_CORRECTION 0
// This function initializes the ADC and configures
// it the way we need.
void hw_afsk_adcInit(int ch, Afsk *_modem)
{
// Store a reference to our modem "object"
modem = _modem;
// Also make sure that we are not trying to use
// a pin that can't be used for analog input
ASSERT(ch <= 5);
// We need a timer to control how often our sampling functions
// should run. To do this we will need to change some registers.
// First we do some configuration on the Timer/Counter Control
// Register 1, aka Timer1.
//
// The following bits are set:
// CS10: ClockSource 10, sets no prescaler on the clock,
// meaning it will run at the same speed as the CPU, ie 16MHz
// WGM13 and WGM12 together enables "Timer Mode 12", which
// is Clear Timer on Compare, compare set to TOP, and the
// source for the TOP value is ICR1 (Input Capture Register1).
// TOP means that we specify a maximum value for the timer, and
// once that value is reached, an interrupt will be triggered.
// The timer will then start from zero again. As just noted,
// the place we specify this value is in the ICR1 register.
TCCR1A = 0;
TCCR1B = BV(CS10) | BV(WGM13) | BV(WGM12);
// We now set the ICR1 register to what count value we want to
// reset (and thus trigger the interrupt) at.
// Since the timer is running at 16MHz, the counter will be
// incremented 16 million times each second, and we want the
// interrupt to trigger 9600 times each second. The formula for
// calculating the value of ICR1 (the TOP value) is:
// (CPUClock / Prescaler) / desired frequency - 1
// So that's what well put in this register to set up our
// 9.6KHz sampling rate. Note that we can also specify a clock
// correction to this calculation. If you measure your processors
// actual clock speed to 16.095MHz, define FREQUENCY_CORRECTION
// as 9500, and the actual sampling (and this modulation and
// demodulation) will be much closer to an actual 9600 Hz.
// No crystals are perfect though, and will also drift with
// temperature variations, but if you have a board with a
// crystal that is way off frequency, this can help alot.
ICR1 = (((CPU_FREQ+FREQUENCY_CORRECTION)) / 9600) - 1;
// Set reference to AVCC (5V), select pin
// Set the ADMUX register. The first part (BV(REFS0)) sets
// the reference voltage to VCC (5V), and the next selects
// the ADC channel (basically what pin we are capturing on)
ADMUX = BV(REFS0) | ch;
DDRC &= ~BV(ch); // Set the selected channel (pin) to input
PORTC &= ~BV(ch); // Initialize the selected pin to LOW
DIDR0 |= BV(ch); // Disable the Digital Input Buffer on selected pin
// Now a little more configuration to get the ADC working
// the way we want
ADCSRB = BV(ADTS2) | // Setting these three on (1-1-1) sets the ADC to
BV(ADTS1) | // "Timer1 capture event". That means we can declare
BV(ADTS0); // an ISR in the ADC Vector, that will then get called
// everytime the ADC has a sample ready, which will
// happen at the 9.6Khz sampling rate we set up earlier
ADCSRA = BV(ADEN) | // ADC Enable - Yes, we need to turn it on :)
BV(ADSC) | // ADC Start Converting - Tell it to start doing conversions
BV(ADATE)| // Enable autotriggering - Enables the autotrigger on complete
BV(ADIE) | // ADC Interrupt enable - Enables an interrupt to be called
BV(ADPS2); // Enable prescaler flag 2 (1-0-0 = division by 16 = 1MHz)
// This sets the ADC to run at 1MHz. This is out of spec,
// Since it's normal operating range is only up to 200KHz.
// But don't worry, it's not dangerous! I promise it wont
// blow up :) There is a downside to running at this speed
// though, hence the "out of spec", which is that we get
// a much lower resolution on the output. In this case,
// it's not a problem though, since we don't need the full
// 10-bit resolution, so we'll take fast and less precise!
}
// This declares the Interrupt Service routine that will
// get called everytime the ADC finishes taking a sample.
// What actually happens here is that we take a piece of
// code, store it somewhere in memory, and then put the
// address of that "somewhere" into the Interrupt Vector
// Table of the processor, in this case the position
// "ADC_vect". This lets the processor know what to do
// when all the timing and configuration we just set up
// finally* ends up triggering the interrupt.
bool hw_ptt_on;
bool hw_afsk_dac_isr;
DECLARE_ISR(ADC_vect) {
TIFR1 = BV(ICF1);
// Call the routine for analysing the captured sample
// Notice that we read the ADC sample, and then bitshift
// by two places to the right, effectively eliminating
// two bits of precision. But we didn't have those
// anyway, because the ADC is running at high speed.
// We then subtract 128 from the value, to get the
// representation to match an AC waveform. We need to
// do this because the AC waveform (from the audio input)
// is biased by +2.5V, which is nessecary, since the ADC
// can't read negative voltages. By doing this simple
// math, we bring it back to an AC representation
// we can do further calculations on.
afsk_adc_isr(modem, ((int16_t)((ADC) >> 2) - 128));
// We also need to check if we're supposed to spit
// out some modulated data to the DAC.
if (hw_afsk_dac_isr) {
// If there is, it's easy to actually do so. We
// calculate what the sample should be in the
// DAC ISR, and apply the bitmask 11110000. This
// simoultaneously spits out our 4-bit digital
// sample to the four pins connected to our DAC
// circuit, which then converts it to an analog
// waveform. The reason for the " | BV(3)" is that
// we also need to trigger another pin controlled
// by the PORTD register. This is the PTT pin
// which tells the radio to open it transmitter.
PORTD = (afsk_dac_isr(modem) & 0xF0) | BV(3);
} else {
// If we're not supposed to transmit anything, we
// keep quiet by continously sending 128, which
// when converted to an AC waveform by the DAC,
// equates to a steady, unchanging 0 volts.
if (hw_ptt_on) {
PORTD = 136;
} else {
PORTD = 128;
}
}
}
// (*) "finally" is probably the wrong description here.
// "All the f'ing time" is probably more accurate :)
// but it felt like it was a long way down here,
// writing all the explanations. I think this is a
// nice testament to how efficient and smart these
// processors are. The actual code to set up what
// took a long time to explain, is really very short.

59
Modem/hardware.h
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//////////////////////////////////////////////////////
// First things first, all the includes we need //
//////////////////////////////////////////////////////
#ifndef FSK_MODEM_HW
#define FSK_MODEM_HW
#include "cfg/cfg_arch.h" // Architecture configuration
#include <avr/io.h> // AVR IO functions from BertOS
//////////////////////////////////////////////////////
// Definitions and some useful macros //
//////////////////////////////////////////////////////
// Forward declaration of our modem "object"
struct Afsk;
// Function declarations
void hw_afsk_adcInit(int ch, struct Afsk *_ctx);
void hw_afsk_dacInit(int ch, struct Afsk *_ctx);
// Here's some macros for controlling the RX/TX LEDs
// THE _INIT() functions writes to the DDRB register
// to configure the pins as output pins, and the _ON()
// and _OFF() functions writes to the PORT registers
// to turn the pins on or off.
#define LED_TX_INIT() do { DDRB |= BV(1); } while (0)
#define LED_TX_ON() do { PORTB |= BV(1); } while (0)
#define LED_TX_OFF() do { PORTB &= ~BV(1); } while (0)
#define LED_RX_INIT() do { DDRB |= BV(2); } while (0)
#define LED_RX_ON() do { PORTB |= BV(2); } while (0)
#define LED_RX_OFF() do { PORTB &= ~BV(2); } while (0)
// A shorthand macro for initializing the ADC.
// It just calls the actual ADC initialization code
// in "hardware.c"
#define AFSK_ADC_INIT(ch, ctx) hw_afsk_adcInit(ch, ctx)
// Initialization of the DAC pins. The DDRD register
// configures pins 0 through 7 for input or output.
// DDR stands for Data Direction Register. By setting
// it to 0xF8 we set 11111000, which means the pins
// 3, 4, 5, 6 and 7 will be set to output.
#define AFSK_DAC_INIT() do { DDRD |= 0xF8; } while (0)
// These two macros start and stop the DAC routine
// being called in our timer interrupt. For starting
// it, we set a boolean flag to true, and false for
// stopping it. We also turn on and off pin 3 to trigger
// the PTT of the radio.
#define AFSK_DAC_IRQ_START() do { extern bool hw_afsk_dac_isr; PORTD |= BV(3); hw_afsk_dac_isr = true; } while (0)
#define AFSK_DAC_IRQ_STOP() do { extern bool hw_afsk_dac_isr; PORTD &= ~BV(3); hw_afsk_dac_isr = false; } while (0)
#define AFSK_HW_PTT_ON() do { extern bool hw_ptt_on; hw_ptt_on = true; } while (0)
#define AFSK_HW_PTT_OFF() do { extern bool hw_ptt_on; hw_ptt_on = false; } while (0)
#endif

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Modem/main.c
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//////////////////////////////////////////////////////
// First things first, all the includes we need //
//////////////////////////////////////////////////////
#include <cpu/irq.h> // Interrupt functionality from BertOS
#include <drv/ser.h> // Serial driver from BertOS
#include <drv/timer.h> // Timer driver from BertOS
#include <stdio.h> // Standard input/output
#include <string.h> // String operations
#define F_CPU 16000000UL
#include <util/delay.h>
#include <net/ax25.h>
#include "afsk.h" // Header for AFSK modem
#include "protocol/SimpleSerial.h" // Simple serial control protocol
#include "protocol/KISS.h" // KISS TNC protocol
#if SERIAL_DEBUG
#include "cfg/debug.h" // Debug configuration from BertOS
#endif
//////////////////////////////////////////////////////
// A few definitions //
//////////////////////////////////////////////////////
static Afsk afsk; // Declare a AFSK modem struct
static AX25Ctx ax25; // Declare a protocol struct
static Serial ser; // Declare a serial interface struct
#define ADC_CH 0 // Define which channel (pin) we want
// for the ADC (this is A0 on arduino)
#if SERIAL_PROTOCOL == PROTOCOL_SIMPLE_SERIAL
static uint8_t serialBuffer[CONFIG_AX25_FRAME_BUF_LEN+1]; // Buffer for holding incoming serial data
static int sbyte; // For holding byte read from serial port
static size_t serialLen = 0; // Counter for counting length of data from serial
static bool sertx = false; // Flag signifying whether it's time to send data
// received on the serial port.
#endif
#if SERIAL_PROTOCOL == PROTOCOL_KISS
static uint8_t sbyte; // For holding byte read from serial port
#endif
#define SER_BUFFER_FULL (serialLen < CONFIG_AX25_FRAME_BUF_LEN-1)
//////////////////////////////////////////////////////
// And here comes the actual program :) //
//////////////////////////////////////////////////////
// This is a callback we register with the protocol,
// so we can process each packet as they are decoded.
// Right now it just prints the packet to the serial port.
#if SERIAL_PROTOCOL == PROTOCOL_SIMPLE_SERIAL
static void message_callback(struct AX25Msg *msg)
{
ss_messageCallback(msg, &ser);
}
#endif
#if SERIAL_PROTOCOL == PROTOCOL_KISS
static void message_callback(struct AX25Ctx *ctx)
{
kiss_messageCallback(ctx);
}
#endif
// Simple initialization function.
static void init(void)
{
// Enable interrupts
IRQ_ENABLE;
// Initialize hardware timers
timer_init();
// Initialize serial comms on UART0,
// which is the hardware serial on arduino
ser_init(&ser, SER_UART0);
ser_setbaudrate(&ser, 9600);
// For some reason BertOS sets the serial
// to 7 bit characters by default. We set
// it to 8 instead.
UCSR0C = _BV(UCSZ01) | _BV(UCSZ00);
// Create a modem context
afsk_init(&afsk, ADC_CH);
// ... and a protocol context with the modem
ax25_init(&ax25, &afsk.fd, message_callback);
#if SERIAL_PROTOCOL == PROTOCOL_SIMPLE_SERIAL
// Init SimpleSerial
ss_init(&ax25);
#endif
#if SERIAL_PROTOCOL == PROTOCOL_KISS
// Init KISS
kiss_init(&ax25, &afsk, &ser);
#endif
// That's all!
}
int main(void)
{
// Start by running the main initialization
init();
#if SERIAL_PROTOCOL == PROTOCOL_KISS
while (1) {
// First we instruct the protocol to check for
// incoming data
ax25_poll(&ax25);
if (ser_available(&ser)) {
sbyte = ser_getchar_nowait(&ser);
kiss_serialCallback(sbyte);
}
}
#endif
#if SERIAL_PROTOCOL == PROTOCOL_SIMPLE_SERIAL
// Record the current tick count for time-keeping
ticks_t start = timer_clock();
// Go into ye good ol' infinite loop
while (1) {
// First we instruct the protocol to check for
// incoming data
ax25_poll(&ax25);
// Poll for incoming serial data
if (!sertx && ser_available(&ser)) {
// We then read a byte from the serial port.
// Notice that we use "_nowait" since we can't
// have this blocking execution until a byte
// comes in.
sbyte = ser_getchar_nowait(&ser);
// If SERIAL_DEBUG is specified we'll handle
// serial data as direct human input and only
// transmit when we get a LF character
#if SERIAL_DEBUG
// If we have not yet surpassed the maximum frame length
// and the byte is not a "transmit" (newline) character,
// we should store it for transmission.
if ((serialLen < CONFIG_AX25_FRAME_BUF_LEN) && (sbyte != 10)) {
// Put the read byte into the buffer;
serialBuffer[serialLen] = sbyte;
// Increment the read length counter
serialLen++;
} else {
// If one of the above conditions were actually the
// case, it means we have to transmit, se we set
// transmission flag to true.
sertx = true;
}
#else
// Otherwise we assume the modem is running
// in automated mode, and we push out data
// as it becomes available. We either transmit
// immediately when the max frame length has
// been reached, or when we get no input for
// a certain amount of time.
if (serialLen < CONFIG_AX25_FRAME_BUF_LEN-1) {
// Put the read byte into the buffer;
serialBuffer[serialLen] = sbyte;
// Increment the read length counter
serialLen++;
} else {
// If max frame length has been reached
// we need to transmit.
serialBuffer[serialLen] = sbyte;
serialLen++;
sertx = true;
}
start = timer_clock();
#endif
} else {
if (!SERIAL_DEBUG && serialLen > 0 && timer_clock() - start > ms_to_ticks(TX_MAXWAIT)) {
sertx = true;
}
}
if (sertx) {
ss_serialCallback(serialBuffer, serialLen, &ser, &ax25);
sertx = false;
serialLen = 0;
}
}
#endif
return 0;
}

118
Modem/protocol/KISS.c
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#include <stdlib.h>
#include <string.h>
#include <avr/eeprom.h>
#define F_CPU 16000000UL
#include <util/delay.h>
#include <drv/timer.h> // Timer driver from BertOS
#include "KISS.h"
static uint8_t serialBuffer[CONFIG_AX25_FRAME_BUF_LEN+1]; // Buffer for holding incoming serial data
AX25Ctx *ax25ctx;
Afsk *channel;
Serial *serial;
size_t frame_len;
bool IN_FRAME;
bool ESCAPE;
uint8_t command = CMD_UNKNOWN;
unsigned long custom_preamble = CONFIG_AFSK_PREAMBLE_LEN;
unsigned long custom_tail = CONFIG_AFSK_TRAILER_LEN;
unsigned long slotTime = 200;
uint8_t p = 63;
void kiss_init(AX25Ctx *ax25, Afsk *afsk, Serial *ser) {
ax25ctx = ax25;
serial = ser;
channel = afsk;
}
void kiss_messageCallback(AX25Ctx *ctx) {
kfile_putc(FEND, &serial->fd);
kfile_putc(0x00, &serial->fd);
for (unsigned i = 0; i < ctx->frm_len; i++) {
uint8_t b = ctx->buf[i];
if (b == FEND) {
kfile_putc(FESC, &serial->fd);
kfile_putc(TFEND, &serial->fd);
} else if (b == FESC) {
kfile_putc(FESC, &serial->fd);
kfile_putc(TFESC, &serial->fd);
} else {
kfile_putc(b, &serial->fd);
}
}
kfile_putc(FEND, &serial->fd);
}
void fon(void) {
long ts = 300000;
while (ts--) PORTB |= BV(2);
}
void kiss_csma(AX25Ctx *ctx, uint8_t *buf, size_t len) {
bool sent = false;
while (!sent) {
if(!channel->hdlc.receiving) {
uint8_t tp = rand() & 0xFF;
if (tp < p) {
ax25_sendRaw(ctx, buf, len);
sent = true;
} else {
ticks_t start = timer_clock();
while (timer_clock() - start < ms_to_ticks(slotTime)) {
cpu_relax();
}
}
} else {
while (channel->hdlc.receiving) {
cpu_relax();
}
}
}
}
void kiss_serialCallback(uint8_t sbyte) {
if (IN_FRAME && sbyte == FEND && command == CMD_DATA) {
IN_FRAME = false;
#if CSMA_ENABLE
kiss_csma(ax25ctx, serialBuffer, frame_len);
#else
ax25_sendRaw(ax25ctx, serialBuffer, frame_len);
#endif
} else if (sbyte == FEND) {
IN_FRAME = true;
command = CMD_UNKNOWN;
frame_len = 0;
} else if (IN_FRAME && frame_len < CONFIG_AX25_FRAME_BUF_LEN) {
// Have a look at the command byte first
if (frame_len == 0 && command == CMD_UNKNOWN) {
// MicroModem supports only one HDLC port, so we
// strip off the port nibble of the command byte
sbyte = sbyte & 0x0F;
command = sbyte;
} else if (command == CMD_DATA) {
if (sbyte == FESC) {
ESCAPE = true;
} else {
if (ESCAPE) {
if (sbyte == TFEND) sbyte = FEND;
if (sbyte == TFESC) sbyte = FESC;
ESCAPE = false;
}
serialBuffer[frame_len++] = sbyte;
}
} else if (command == CMD_TXDELAY) {
custom_preamble = sbyte * 10UL;
} else if (command == CMD_TXTAIL) {
custom_tail = sbyte * 10;
} else if (command == CMD_SLOTTIME) {
slotTime = sbyte * 10;
} else if (command == CMD_P) {
p = sbyte;
}
}
}

28
Modem/protocol/KISS.h
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#ifndef _PROTOCOL_KISS
#define _PROTOCOL_KISS 0x02
#define FEND 0xC0
#define FESC 0xDB
#define TFEND 0xDC
#define TFESC 0xDD
#define CMD_UNKNOWN 0xFE
#define CMD_DATA 0x00
#define CMD_TXDELAY 0x01
#define CMD_P 0x02
#define CMD_SLOTTIME 0x03
#define CMD_TXTAIL 0x04
#define CMD_FULLDUPLEX 0x05
#define CMD_SETHARDWARE 0x06
#define CMD_RETURN 0xFF
#include <net/ax25.h>
#include <drv/ser.h>
#include "afsk.h"
void kiss_init(AX25Ctx *ax25, Afsk *afsk, Serial *ser);
void kiss_csma(AX25Ctx *ctx, uint8_t *buf, size_t len);
void kiss_messageCallback(AX25Ctx *ctx);
void kiss_serialCallback(uint8_t sbyte);
void fon(void);
#endif

844
Modem/protocol/SimpleSerial.c
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#define ENABLE_HELP false
#include <stdlib.h>
#include <string.h>
#include <avr/eeprom.h>
#define F_CPU 16000000UL
#include <util/delay.h>
#include "protocol/SimpleSerial.h"
bool PRINT_SRC = true;
bool PRINT_DST = true;
bool PRINT_PATH = true;
bool PRINT_DATA = true;
bool PRINT_INFO = true;
bool VERBOSE = true;
bool SILENT = false;
bool SS_INIT = false;
bool SS_DEFAULT_CONF = false;
AX25Call src;
AX25Call dst;
AX25Call path1;
AX25Call path2;
char CALL[6] = DEFAULT_CALLSIGN;
int CALL_SSID = 0;
char DST[6] = DEFAULT_DESTINATION_CALL;
int DST_SSID = 0;
char PATH1[6] = "WIDE1";
int PATH1_SSID = 1;
char PATH2[6] = "WIDE2";
int PATH2_SSID = 2;
AX25Call path[4];
AX25Ctx *ax25ctx;
#define NV_MAGIC_BYTE 0x69
uint8_t EEMEM nvMagicByte;
uint8_t EEMEM nvCALL[6];
uint8_t EEMEM nvDST[6];
uint8_t EEMEM nvPATH1[6];
uint8_t EEMEM nvPATH2[6];
uint8_t EEMEM nvCALL_SSID;
uint8_t EEMEM nvDST_SSID;
uint8_t EEMEM nvPATH1_SSID;
uint8_t EEMEM nvPATH2_SSID;
bool EEMEM nvPRINT_SRC;
bool EEMEM nvPRINT_DST;
bool EEMEM nvPRINT_PATH;
bool EEMEM nvPRINT_DATA;
bool EEMEM nvPRINT_INFO;
bool EEMEM nvVERBOSE;
bool EEMEM nvSILENT;
uint8_t EEMEM nvPOWER;
uint8_t EEMEM nvHEIGHT;
uint8_t EEMEM nvGAIN;
uint8_t EEMEM nvDIRECTIVITY;
uint8_t EEMEM nvSYMBOL_TABLE;
uint8_t EEMEM nvSYMBOL;
uint8_t EEMEM nvAUTOACK;
int EEMEM nvPREAMBLE;
int EEMEM nvTAIL;
// Location packet assembly fields
char latitude[8];
char longtitude[9];
char symbolTable = '/';
char symbol = 'n';
uint8_t power = 10;
uint8_t height = 10;
uint8_t gain = 10;
uint8_t directivity = 10;
/////////////////////////
// Message packet assembly fields
char message_recip[6];
int message_recip_ssid = -1;
int message_seq = 0;
char lastMessage[67];
size_t lastMessageLen;
bool message_autoAck = false;
/////////////////////////
extern unsigned long custom_preamble;
extern unsigned long custom_tail;
void ss_init(AX25Ctx *ax25) {
ax25ctx = ax25;
ss_loadSettings();
SS_INIT = true;
if (VERBOSE) {
_delay_ms(300);
kprintf("---------------\n");
kprintf("MicroAPRS v0.2a\n");
kprintf("unsigned.io/microaprs\n");
if (SS_DEFAULT_CONF) kprintf("Default configuration loaded!\n");
kprintf("Modem ready\n");
kprintf("---------------\n");
}
}
void ss_clearSettings(void) {
eeprom_update_byte((void*)&nvMagicByte, 0xFF);
if (VERBOSE) kprintf("Configuration cleared. Restart to load defaults.\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
}
void ss_loadSettings(void) {
uint8_t verification = eeprom_read_byte((void*)&nvMagicByte);
if (verification == NV_MAGIC_BYTE) {
eeprom_read_block((void*)CALL, (void*)nvCALL, 6);
eeprom_read_block((void*)DST, (void*)nvDST, 6);
eeprom_read_block((void*)PATH1, (void*)nvPATH1, 6);
eeprom_read_block((void*)PATH2, (void*)nvPATH2, 6);
CALL_SSID = eeprom_read_byte((void*)&nvCALL_SSID);
DST_SSID = eeprom_read_byte((void*)&nvDST_SSID);
PATH1_SSID = eeprom_read_byte((void*)&nvPATH1_SSID);
PATH2_SSID = eeprom_read_byte((void*)&nvPATH2_SSID);
PRINT_SRC = eeprom_read_byte((void*)&nvPRINT_SRC);
PRINT_DST = eeprom_read_byte((void*)&nvPRINT_DST);
PRINT_PATH = eeprom_read_byte((void*)&nvPRINT_PATH);
PRINT_DATA = eeprom_read_byte((void*)&nvPRINT_DATA);
PRINT_INFO = eeprom_read_byte((void*)&nvPRINT_INFO);
VERBOSE = eeprom_read_byte((void*)&nvVERBOSE);
SILENT = eeprom_read_byte((void*)&nvSILENT);
power = eeprom_read_byte((void*)&nvPOWER);
height = eeprom_read_byte((void*)&nvHEIGHT);
gain = eeprom_read_byte((void*)&nvGAIN);
directivity = eeprom_read_byte((void*)&nvDIRECTIVITY);
symbolTable = eeprom_read_byte((void*)&nvSYMBOL_TABLE);
symbol = eeprom_read_byte((void*)&nvSYMBOL);
message_autoAck = eeprom_read_byte((void*)&nvAUTOACK);
custom_preamble = eeprom_read_word((void*)&nvPREAMBLE);
custom_tail = eeprom_read_word((void*)&nvTAIL);
if (VERBOSE && SS_INIT) kprintf("Configuration loaded\n");
} else {
if (SS_INIT && !SILENT && VERBOSE) kprintf("Error: No stored configuration to load!\n");
if (SS_INIT && !SILENT && !VERBOSE) kprintf("0\n");
SS_DEFAULT_CONF = true;
}
}
void ss_saveSettings(void) {
eeprom_update_block((void*)CALL, (void*)nvCALL, 6);
eeprom_update_block((void*)DST, (void*)nvDST, 6);
eeprom_update_block((void*)PATH1, (void*)nvPATH1, 6);
eeprom_update_block((void*)PATH2, (void*)nvPATH2, 6);
eeprom_update_byte((void*)&nvCALL_SSID, CALL_SSID);
eeprom_update_byte((void*)&nvDST_SSID, DST_SSID);
eeprom_update_byte((void*)&nvPATH1_SSID, PATH1_SSID);
eeprom_update_byte((void*)&nvPATH2_SSID, PATH2_SSID);
eeprom_update_byte((void*)&nvPRINT_SRC, PRINT_SRC);
eeprom_update_byte((void*)&nvPRINT_DST, PRINT_DST);
eeprom_update_byte((void*)&nvPRINT_PATH, PRINT_PATH);
eeprom_update_byte((void*)&nvPRINT_DATA, PRINT_DATA);
eeprom_update_byte((void*)&nvPRINT_INFO, PRINT_INFO);
eeprom_update_byte((void*)&nvVERBOSE, VERBOSE);
eeprom_update_byte((void*)&nvSILENT, SILENT);
eeprom_update_byte((void*)&nvPOWER, power);
eeprom_update_byte((void*)&nvHEIGHT, height);
eeprom_update_byte((void*)&nvGAIN, gain);
eeprom_update_byte((void*)&nvDIRECTIVITY, directivity);
eeprom_update_byte((void*)&nvSYMBOL_TABLE, symbolTable);
eeprom_update_byte((void*)&nvSYMBOL, symbol);
eeprom_update_byte((void*)&nvAUTOACK, message_autoAck);
eeprom_update_word((void*)&nvPREAMBLE, custom_preamble);
eeprom_update_word((void*)&nvTAIL, custom_tail);
eeprom_update_byte((void*)&nvMagicByte, NV_MAGIC_BYTE);
if (VERBOSE) kprintf("Configuration saved\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
}
void ss_messageCallback(struct AX25Msg *msg, Serial *ser) {
if (PRINT_SRC) {
if (PRINT_INFO) kfile_print(&ser->fd, "SRC: ");
kfile_printf(&ser->fd, "[%.6s-%d] ", msg->src.call, msg->src.ssid);
}
if (PRINT_DST) {
if (PRINT_INFO) kfile_printf(&ser->fd, "DST: ");
kfile_printf(&ser->fd, "[%.6s-%d] ", msg->dst.call, msg->dst.ssid);
}
if (PRINT_PATH) {
if (PRINT_INFO) kfile_print(&ser->fd, "PATH: ");
for (int i = 0; i < msg->rpt_cnt; i++)
kfile_printf(&ser->fd, "[%.6s-%d] ", msg->rpt_lst[i].call, msg->rpt_lst[i].ssid);
}
if (PRINT_DATA) {
if (PRINT_INFO) kfile_print(&ser->fd, "DATA: ");
kfile_printf(&ser->fd, "%.*s", msg->len, msg->info);
}
kfile_print(&ser->fd, "\r\n");
if (message_autoAck && msg->len > 11) {
char mseq[6];
bool shouldAck = true;
int msl = 0;
int loc = msg->len - 1;
size_t i = 0;
while (i<7 && i < msg->len) {
if (msg->info[loc-i] == '{') {
size_t p;
for (p = 0; p <= i; p++) {
mseq[p] = msg->info[loc-i+p];
msl = i;
}
}
i++;
}
if (msl != 0) {
int pos = 1;
int ssidPos = 0;
while (pos < 7) {
if (msg->info[pos] != CALL[pos-1]) {
shouldAck = false;
pos = 7;
}
pos++;
}
while (pos < 10) {
if (msg->info[pos] == '-') ssidPos = pos;
pos++;
}
if (ssidPos != 0) {
if (msg->info[ssidPos+2] == ' ') {
if (msg->info[ssidPos+1]-48 != CALL_SSID) {
shouldAck = false;
}
} else {
int assid = 10+(msg->info[ssidPos+2]-48);
if (assid != CALL_SSID) {
shouldAck = false;
}
}
}
if (msl != 0 && shouldAck) {
int ii = 0;
char *ack = malloc(14+msl);
for (ii = 0; ii < 9; ii++) {
ack[1+ii] = ' ';
}
int calllen = 0;
for (ii = 0; ii < 6; ii++) {
if (msg->src.call[ii] != 0) {
ack[1+ii] = msg->src.call[ii];
calllen++;
}
}
if (msg->src.ssid != 0) {
ack[1+calllen] = '-';
if (msg->src.ssid < 10) {
ack[2+calllen] = msg->src.ssid+48;
} else {
ack[2+calllen] = 49;
ack[3+calllen] = msg->src.ssid-10+48;
}
}
ack[0] = ':';
ack[10] = ':';
ack[11] = 'a';
ack[12] = 'c';
ack[13] = 'k';
for (ii = 0; ii < msl; ii++) {
ack[14+ii] = mseq[ii+1];
}
_delay_ms(1750);
ss_sendPkt(ack, 14+msl, ax25ctx);
free(ack);
}
}
}
}
void ss_serialCallback(void *_buffer, size_t length, Serial *ser, AX25Ctx *ctx) {
uint8_t *buffer = (uint8_t *)_buffer;
if (length > 0) {
// ! as first char to send packet
if (buffer[0] == '!' && length > 1) {
buffer++; length--;
ss_sendPkt(buffer, length, ctx);
if (VERBOSE) kprintf("Packet sent\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
} else if (buffer[0] == '@') {
buffer++; length--;
ss_sendLoc(buffer, length, ctx);
if (VERBOSE) kprintf("Location update sent\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
} else if (buffer[0] == '#') {
buffer++; length--;
ss_sendMsg(buffer, length, ctx);
if (VERBOSE) kprintf("Message sent\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
}
#if ENABLE_HELP
else if (buffer[0] == 'h') {
ss_printHelp();
}
#endif
else if (buffer[0] == 'H') {
ss_printSettings();
} else if (buffer[0] == 'S') {
ss_saveSettings();
} else if (buffer[0] == 'C') {
ss_clearSettings();
} else if (buffer[0] == 'L') {
ss_loadSettings();
} else if (buffer[0] == 'c' && length > 3) {
buffer++; length--;
int count = 0;
while (length-- && count < 6) {
char c = buffer[count];
if (c != 0 && c != 10 && c != 13) {
CALL[count] = c;
} else {
CALL[count] = 0x00;
}
count++;
}
while (count < 6) {
CALL[count] = 0x00;
count++;
}
if (VERBOSE) kprintf("Callsign: %.6s-%d\n", CALL, CALL_SSID);
if (!VERBOSE && !SILENT) kprintf("1\n");
} else if (buffer[0] == 'd' && length > 3) {
buffer++; length--;
int count = 0;
while (length-- && count < 6) {
char c = buffer[count];
if (c != 0 && c != 10 && c != 13) {
DST[count] = c;
} else {
DST[count] = 0;
}
count++;
}
while (count < 6) {
DST[count] = 0x00;
count++;
}
if (VERBOSE) kprintf("Destination: %.6s-%d\n", DST, DST_SSID);
if (!VERBOSE && !SILENT) kprintf("1\n");
} else if (buffer[0] == '1' && length > 1) {
buffer++; length--;
int count = 0;
while (length-- && count < 6) {
char c = buffer[count];
if (c != 0 && c != 10 && c != 13) {
PATH1[count] = c;
} else {
PATH1[count] = 0;
}
count++;
}
while (count < 6) {
PATH1[count] = 0x00;
count++;
}
if (VERBOSE) kprintf("Path1: %.6s-%d\n", PATH1, PATH1_SSID);
if (!VERBOSE && !SILENT) kprintf("1\n");
} else if (buffer[0] == '2' && length > 1) {
buffer++; length--;
int count = 0;
while (length-- && count < 6) {
char c = buffer[count];
if (c != 0 && c != 10 && c != 13) {
PATH2[count] = c;
} else {
PATH2[count] = 0;
}
count++;
}
while (count < 6) {
PATH2[count] = 0x00;
count++;
}
if (VERBOSE) kprintf("Path2: %.6s-%d\n", PATH2, PATH2_SSID);
if (!VERBOSE && !SILENT) kprintf("1\n");
} else if (buffer[0] == 's' && length > 2) {
buffer++; length--;
if (buffer[0] == 'c') {
if (length > 2 && buffer[2] > 48 && buffer[2] < 58) {
CALL_SSID = 10+buffer[2]-48;
} else {
CALL_SSID = buffer[1]-48;
}
if (VERBOSE) kprintf("Callsign: %.6s-%d\n", CALL, CALL_SSID);
if (!VERBOSE && !SILENT) kprintf("1\n");
}
if (buffer[0] == 'd') {
if (length > 2 && buffer[2] > 48 && buffer[2] < 58) {
DST_SSID = 10+buffer[2]-48;
} else {
DST_SSID = buffer[1]-48;
}
if (VERBOSE) kprintf("Destination: %.6s-%d\n", DST, DST_SSID);
if (!VERBOSE && !SILENT) kprintf("1\n");
}
if (buffer[0] == '1' && buffer[2] > 48 && buffer[2] < 58) {
if (length > 2) {
PATH1_SSID = 10+buffer[2]-48;
} else {
PATH1_SSID = buffer[1]-48;
}
if (VERBOSE) kprintf("Path1: %.6s-%d\n", PATH1, PATH1_SSID);
if (!VERBOSE && !SILENT) kprintf("1\n");
}
if (buffer[0] == '2' && buffer[2] > 48 && buffer[2] < 58) {
if (length > 2) {
PATH2_SSID = 10+buffer[2]-48;
} else {
PATH2_SSID = buffer[1]-48;
}
if (VERBOSE) kprintf("Path2: %.6s-%d\n", PATH2, PATH2_SSID);
if (!VERBOSE && !SILENT) kprintf("1\n");
}
} else if (buffer[0] == 'p' && length > 2) {
buffer++; length--;
if (buffer[0] == 's') {
if (buffer[1] == 49) {
PRINT_SRC = true;
if (VERBOSE) kprintf("Print SRC enabled\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
} else {
PRINT_SRC = false;
if (VERBOSE) kprintf("Print SRC disabled\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
}
}
if (buffer[0] == 'd') {
if (buffer[1] == 49) {
PRINT_DST = true;
if (VERBOSE) kprintf("Print DST enabled\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
} else {
PRINT_DST = false;
if (VERBOSE) kprintf("Print DST disabled\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
}
}
if (buffer[0] == 'p') {
if (buffer[1] == 49) {
PRINT_PATH = true;
if (VERBOSE) kprintf("Print PATH enabled\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
} else {
PRINT_PATH = false;
if (VERBOSE) kprintf("Print PATH disabled\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
}
}
if (buffer[0] == 'm') {
if (buffer[1] == 49) {
PRINT_DATA = true;
if (VERBOSE) kprintf("Print DATA enabled\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
} else {
PRINT_DATA = false;
if (VERBOSE) kprintf("Print DATA disabled\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
}
}
if (buffer[0] == 'i') {
if (buffer[1] == 49) {
PRINT_INFO = true;
if (VERBOSE) kprintf("Print INFO enabled\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
} else {
PRINT_INFO = false;
if (VERBOSE) kprintf("Print INFO disabled\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
}
}
} else if (buffer[0] == 'v') {
if (buffer[1] == 49) {
VERBOSE = true;
kfile_printf(&ser->fd, "Verbose mode enabled\n");
} else {
VERBOSE = false;
kfile_printf(&ser->fd, "Verbose mode disabled\n");
}
} else if (buffer[0] == 'V') {
if (buffer[1] == 49) {
SILENT = true;
VERBOSE = false;
kfile_printf(&ser->fd, "Silent mode enabled\n");
} else {
SILENT = false;
kfile_printf(&ser->fd, "Silent mode disabled\n");
}
} else if (buffer[0] == 'l' && length > 2) {
buffer++; length--;
if (buffer[0] == 'l' && buffer[1] == 'a' && length >= 10) {
buffer += 2;
memcpy(latitude, (void *)buffer, 8);
if (VERBOSE) kprintf("Latitude set to %.8s\n", latitude);
if (!VERBOSE && !SILENT) kprintf("1\n");
} else if (buffer[0] == 'l' && buffer[1] == 'o' && length >= 11) {
buffer += 2;
memcpy(longtitude, (void *)buffer, 9);
if (VERBOSE) kprintf("Longtitude set to %.9s\n", longtitude);
if (!VERBOSE && !SILENT) kprintf("1\n");
} else if (buffer[0] == 'p' && length >= 2 && buffer[1] >= 48 && buffer[1] <= 57) {
power = buffer[1] - 48;
if (VERBOSE) kprintf("Power set to %dw\n", power*power);
if (!VERBOSE && !SILENT) kprintf("1\n");
} else if (buffer[0] == 'h' && length >= 2 && buffer[1] >= 48 && buffer[1] <= 57) {
height = buffer[1] - 48;
if (VERBOSE) kprintf("Antenna height set to %ldm AAT\n", (long)(BV(height)*1000L)/328L);
if (!VERBOSE && !SILENT) kprintf("1\n");
} else if (buffer[0] == 'g' && length >= 2 && buffer[1] >= 48 && buffer[1] <= 57) {
gain = buffer[1] - 48;
if (VERBOSE) kprintf("Gain set to %ddB\n", gain);
if (!VERBOSE && !SILENT) kprintf("1\n");
} else if (buffer[0] == 'd' && length >= 2 && buffer[1] >= 48 && buffer[1] <= 57) {
directivity = buffer[1] - 48;
if (directivity == 9) directivity = 8;
if (!VERBOSE && !SILENT) kprintf("1\n");
if (VERBOSE) {
if (directivity == 0) kprintf("Directivity set to omni\n");
if (directivity != 0) kprintf("Directivity set to %ddeg\n", directivity*45);
}
} else if (buffer[0] == 's' && length >= 2) {
symbol = buffer[1];
if (VERBOSE) kprintf("Symbol set to %c\n", symbol);
} else if (buffer[0] == 't' && length >= 2) {
if (buffer[1] == 'a') {
symbolTable = '\\';
if (VERBOSE) kprintf("Selected alternate symbol table\n");
} else {
symbolTable = '/';
if (VERBOSE) kprintf("Selected standard symbol table\n");
}
if (!VERBOSE && !SILENT) kprintf("1\n");
}
} else if (buffer[0] == 'm' && length > 1) {
buffer++; length--;
if (buffer[0] == 'c' && length > 1) {
buffer++; length--;
int count = 0;
while (length-- && count < 6) {
char c = buffer[count];
if (c != 0 && c != 10 && c != 13) {
message_recip[count] = c;
} else {
message_recip[count] = 0x00;
}
count++;
}
while (count < 6) {
message_recip[count] = 0x00;
count++;
}
if (VERBOSE) {
kprintf("Message recipient: %.6s", message_recip);
if (message_recip_ssid != -1) {
kprintf("-%d\n", message_recip_ssid);
} else {
kprintf("\n");
}
}
if (!VERBOSE && !SILENT) kprintf("1\n");
} else if (buffer[0] == 's' && length > 1) {
if (length > 2) {
message_recip_ssid = 10+buffer[2]-48;
} else {
message_recip_ssid = buffer[1]-48;
}
if (message_recip_ssid < 0 || message_recip_ssid > 15) message_recip_ssid = -1;
if (VERBOSE) {
kprintf("Message recipient: %.6s", message_recip);
if (message_recip_ssid != -1) {
kprintf("-%d\n", message_recip_ssid);
} else {
kprintf("\n");
}
}
if (!VERBOSE && !SILENT) kprintf("1\n");
} else if (buffer[0] == 'r') {
ss_msgRetry(ctx);
if (VERBOSE) kprintf("Retried last message\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
} else if (buffer[0] == 'a') {
if (buffer[1] == 49) {
message_autoAck = true;
if (VERBOSE) kprintf("Message auto-ack enabled\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
} else {
message_autoAck = false;
if (VERBOSE) kprintf("Message auto-ack disabled\n");
if (!VERBOSE && !SILENT) kprintf("1\n");
}
}
} else if (buffer[0] == 'w' && length >= 2) {
char str[4]; buffer++;
memcpy(str, buffer, length-1);
int preamble = atoi(str);
if (preamble >= 0 && preamble <= 9999) {
custom_preamble = preamble;
kprintf("Preamble set to %dms\n", custom_preamble);
} else {
kprintf("Error: Invalid value for preamble\n");
}
} else if (buffer[0] == 'W' && length >= 2) {
char str[4]; buffer++;
memcpy(str, buffer, length-1);
int tail = atoi(str);
if (tail >= 0 && tail <= 9999) {
custom_tail = tail;
kprintf("TX Tail set to %dms\n", custom_tail);
} else {
kprintf("Error: Invalid value for TX tail\n");
}
} else {
if (VERBOSE) kprintf("Error: Invalid command\n");
if (!VERBOSE && !SILENT) kprintf("0\n");
}
}
}
void ss_sendPkt(void *_buffer, size_t length, AX25Ctx *ax25) {
uint8_t *buffer = (uint8_t *)_buffer;
memcpy(dst.call, DST, 6);
dst.ssid = DST_SSID;
memcpy(src.call, CALL, 6);
src.ssid = CALL_SSID;
memcpy(path1.call, PATH1, 6);
path1.ssid = PATH1_SSID;
memcpy(path2.call, PATH2, 6);
path2.ssid = PATH2_SSID;
path[0] = dst;
path[1] = src;
path[2] = path1;
path[3] = path2;
ax25_sendVia(ax25, path, countof(path), buffer, length);
}
void ss_sendLoc(void *_buffer, size_t length, AX25Ctx *ax25) {
size_t payloadLength = 20+length;
bool usePHG = false;
if (power < 10 && height < 10 && gain < 10 && directivity < 9) {
usePHG = true;
payloadLength += 7;
}
uint8_t *packet = malloc(payloadLength);
uint8_t *ptr = packet;
packet[0] = '=';
packet[9] = symbolTable;
packet[19] = symbol;
ptr++;
memcpy(ptr, latitude, 8);
ptr += 9;
memcpy(ptr, longtitude, 9);
ptr += 10;
if (usePHG) {
packet[20] = 'P';
packet[21] = 'H';
packet[22] = 'G';
packet[23] = power+48;
packet[24] = height+48;
packet[25] = gain+48;
packet[26] = directivity+48;
ptr+=7;
}
if (length > 0) {
uint8_t *buffer = (uint8_t *)_buffer;
memcpy(ptr, buffer, length);
}
//kprintf("Assembled packet:\n%.*s\n", payloadLength, packet);
ss_sendPkt(packet, payloadLength, ax25);
free(packet);
}
void ss_sendMsg(void *_buffer, size_t length, AX25Ctx *ax25) {
if (length > 67) length = 67;
size_t payloadLength = 11+length+4;
uint8_t *packet = malloc(payloadLength);
uint8_t *ptr = packet;
packet[0] = ':';
int callSize = 6;
int count = 0;
while (callSize--) {
if (message_recip[count] != 0) {
packet[1+count] = message_recip[count];
count++;
}
}
if (message_recip_ssid != -1) {
packet[1+count] = '-'; count++;
if (message_recip_ssid < 10) {
packet[1+count] = message_recip_ssid+48; count++;
} else {
packet[1+count] = 49; count++;
packet[1+count] = message_recip_ssid-10+48; count++;
}
}
while (count < 9) {
packet[1+count] = ' '; count++;
}
packet[1+count] = ':';
ptr += 11;
if (length > 0) {
uint8_t *buffer = (uint8_t *)_buffer;
memcpy(ptr, buffer, length);
memcpy(lastMessage, buffer, length);
lastMessageLen = length;
}
message_seq++;
if (message_seq > 999) message_seq = 0;
packet[11+length] = '{';
int n = message_seq % 10;
int d = ((message_seq % 100) - n)/10;
int h = (message_seq - d - n) / 100;
packet[12+length] = h+48;
packet[13+length] = d+48;
packet[14+length] = n+48;
//kprintf("Assembled packet:\n%.*s\n", payloadLength, packet);
ss_sendPkt(packet, payloadLength, ax25);
free(packet);
}
void ss_msgRetry(AX25Ctx *ax25) {
message_seq--;
ss_sendMsg(lastMessage, lastMessageLen, ax25);
}
void ss_printSettings(void) {
kprintf("Configuration:\n");
kprintf("Callsign: %.6s-%d\n", CALL, CALL_SSID);
kprintf("Destination: %.6s-%d\n", DST, DST_SSID);
kprintf("Path1: %.6s-%d\n", PATH1, PATH1_SSID);
kprintf("Path2: %.6s-%d\n", PATH2, PATH2_SSID);
if (message_autoAck) {
kprintf("Auto-ack messages: On\n");
} else {
kprintf("Auto-ack messages: Off\n");
}
if (power != 10) kprintf("Power: %d\n", power);
if (height != 10) kprintf("Height: %d\n", height);
if (gain != 10) kprintf("Gain: %d\n", gain);
if (directivity != 10) kprintf("Directivity: %d\n", directivity);
if (symbolTable == '\\') kprintf("Symbol table: alternate\n");
if (symbolTable == '/') kprintf("Symbol table: standard\n");
kprintf("Symbol: %c\n", symbol);
kprintf("TX Preamble: %d\n", custom_preamble);
kprintf("TX Tail: %d\n", custom_tail);
}
#if ENABLE_HELP
void ss_printHelp(void) {
kprintf("----------------------------------\n");
kprintf("Serial commands:\n");
kprintf("!<data> Send raw packet\n");
kprintf("@<cmt> Send location update (cmt = optional comment)\n");
kprintf("#<msg> Send APRS message\n\n");
kprintf("c<call> Set your callsign\n");
kprintf("d<call> Set destination callsign\n");
kprintf("1<call> Set PATH1 callsign\n");
kprintf("2<call> Set PATH2 callsign\n\n");
kprintf("sc<ssid> Set your SSID\n");
kprintf("sd<ssid> Set destination SSID\n");
kprintf("s1<ssid> Set PATH1 SSID\n");
kprintf("s2<ssid> Set PATH2 SSID\n\n");
kprintf("lla<LAT> Set latitude (NMEA-format, eg 4903.50N)\n");
kprintf("llo<LON> Set latitude (NMEA-format, eg 07201.75W)\n");
kprintf("lp<0-9> Set TX power info\n");
kprintf("lh<0-9> Set antenna height info\n");
kprintf("lg<0-9> Set antenna gain info\n");
kprintf("ld<0-9> Set antenna directivity info\n");
kprintf("ls<sym> Select symbol\n");
kprintf("lt<s/a> Select symbol table (standard/alternate)\n\n");
kprintf("mc<call> Set message recipient callsign\n");
kprintf("ms<ssid> Set message recipient SSID\n");
kprintf("mr<ssid> Retry last message\n");
kprintf("ma<1/0> Automatic message ACK on/off\n\n");
kprintf("ps<1/0> Print SRC on/off\n");
kprintf("pd<1/0> Print DST on/off\n");
kprintf("pp<1/0> Print PATH on/off\n");
kprintf("pm<1/0> Print DATA on/off\n");
kprintf("pi<1/0> Print INFO on/off\n\n");
kprintf("v<1/0> Verbose mode on/off\n");
kprintf("V<1/0> Silent mode on/off\n\n");
kprintf("S Save configuration\n");
kprintf("L Load configuration\n");
kprintf("C Clear configuration\n");
kprintf("H Print configuration\n");
kprintf("----------------------------------\n");
}
#endif

26
Modem/protocol/SimpleSerial.h
View File

@ -1,26 +0,0 @@
#ifndef _PROTOCOL_SIMPLE_SERIAL
#define _PROTOCOL_SIMPLE_SERIAL 0x01
#include <net/ax25.h>
#include <drv/ser.h>
#define DEFAULT_CALLSIGN "NOCALL"
#define DEFAULT_DESTINATION_CALL "APZMDM"
void ss_init(AX25Ctx *ax25);
void ss_messageCallback(struct AX25Msg *msg, Serial *ser);
void ss_serialCallback(void *_buffer, size_t length, Serial *ser, AX25Ctx *ctx);
void ss_sendPkt(void *_buffer, size_t length, AX25Ctx *ax25);
void ss_sendLoc(void *_buffer, size_t length, AX25Ctx *ax25);
void ss_sendMsg(void *_buffer, size_t length, AX25Ctx *ax25);
void ss_msgRetry(AX25Ctx *ax25);
void ss_clearSettings(void);
void ss_loadSettings(void);
void ss_saveSettings(void);
void ss_printSettings(void);
void ss_printHelp(void);
#endif

124
README.md
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@ -1,124 +0,0 @@
MicroAPRS - THIS VERSION IS DEPRECATED
==========
MicroAPRS is the APRS fork of [MicroModem](https://github.com/markqvist/MicroModem). It can be built very easily with an Arduino board based on the Atmega 328p, and around 15 common electronics components.
Please read the "Quickstart.pdf" in the Documentation folder for some pointers on building the modem!
Right now the APRS specific documentation is lacking, so all the docs included in this repository is directly from MicroModem, but it should still offer good pointers on building the modem, and getting started. The only difference is the firmware.
Currently a simple serial control protocol is implemented. If there's interest, I could also implement the KISS protocol.
## Some features
- Send and receive AX.25 APRS packets
- Full software modulation and demodulation, minimal extra hardware required
- Easy configuration of callsign and path settings
- Flexibility in how received packets are output over serial connection
- Persistent configuration stored in EEPROM
- Shorthand functions for sending location updates and messages, so you don't need to manually create the packets
- Ability to send raw packets
- Support for settings APRS symbols
- Support for power/height/gain info in location updates
- Ability to automatically ACK messages adressed to the modem
## Modem control
Here's how to control the APRS modem over a serial connection. The modem accepts a variety of commands for setting options and sending packets. Generally a command starts with one or more characters defining the command, and then whatever data is needed to set the options for that command. Here's a list of the currently available commands:
##Serial commands
Command | Description
--- | :---
__!\<data>__ | Send raw packet
__@\<cmt>__ | Send location update (cmt = optional comment)
__#\<msg>__ | Send APRS message
&nbsp; | &nbsp;
__c\<call>__ | Set your callsign
__d\<call>__ | Set destination callsign
__1\<call>__ | Set PATH1 callsign
__2\<call>__ | Set PATH2 callsign
&nbsp; | &nbsp;
__sc\<ssid>__ | Set your SSID
__sd\<ssid>__ | Set destination SSID
__s1\<ssid>__ | Set PATH1 SSID
__s2\<ssid>__ | Set PATH2 SSID
&nbsp; | &nbsp;
__lla\<LAT>__ | Set latitude (NMEA-format, eg 4903.50N)
__llo\<LON>__ | Set latitude (NMEA-format, eg 07201.75W)
__lp\<0-9>__ | Set TX power info
__lh\<0-9>__ | Set antenna height info
__lg\<0-9>__ | Set antenna gain info
__ld\<0-9>__ | Set antenna directivity info
__ls\<sym>__ | Select symbol
__lt\<s/a>__ | Select symbol table (standard/alternate)
&nbsp; | &nbsp;
__mc\<call>__ | Set message recipient callsign
__ms\<ssid>__ | Set message recipient SSID
__mr\<ssid>__ | Retry last message
__ma\<1/0>__ | Automatic message ACK on/off
&nbsp; |&nbsp;
__ps\<1/0>__ | Print SRC on/off
__pd\<1/0>__ | Print DST on/off
__pp\<1/0>__ | Print PATH on/off
__pm\<1/0>__ | Print DATA on/off
__pi\<1/0>__ | Print INFO on/off
__v\<1/0>__ | Verbose mode on/off
__V\<1/0>__ | Silent mode on/off
&nbsp; | &nbsp;
__S__ | Save configuration
__L__ | Load configuration
__C__ | Clear configuration
__H__ | Print configuration
### Examples
__To set your callsign to XX1YYY-5, and then save the configuration, send these three commands:__
```
cXX1YYY
sc5
S
```
__To send an APRS message to ZZ5ABC-1 with the content "Hi there!", send these commands:__
```
mcZZ5ABC
ms1
#Hi there!
```
__To send a location update, with the comment "MicroAPRS", you can do something like this:__
```
lla5230.70N
llo01043.70E
@MicroAPRS
```
__To send an APRS message to ZZ5ABC-1 with the content "Hi there!", using a raw packet, send this command:__
```
!:ZZ5ABC-1 :Hi there!{01
```
__Here's an example of how to send a location update with power, height and gain information, using a raw packet:__
```
!=5230.70N/01043.70E-PHG2410Arduino MicroAPRS
```
### EEPROM Settings
When saving the configuration, it is written to EEPROM, so it will persist between poweroffs. If a configuration has been stored, it will automatically be loaded when the modem powers up. The configuration can be cleared by sending the "clear configuration" command (`C`).
### Serial Connection
To connect to the modem use __9600 baud, 8N1__ serial. By default, the firmware uses time-sensitive input, which means that it will buffer serial data as it comes in, and when it has received no data for a few milliseconds, it will start interpreting whatever it has received. This means you need to set your serial terminal program to not send data for every keystroke, but only on new-line, or pressing send or whatever. If you do not want this behaviour, you can compile the firmware with the DEBUG flag set, which will make the modem wait for a new-line character before interpreting the received data. I would generally advise against this though, since it means that you cannot have newline characters in whatever data you want to send!
![MicroModem](https://raw.githubusercontent.com/markqvist/MicroModem/master/Design/Images/1.jpg)
The repository contains schematics and Eagle PCB files for a Microduino module. There is also fritzing sketches for both an Arduino shield and a Microduino module, with notes so they are easier to understand. I have had the eagle PCB fabricated, and it is working great, so you can use that if want to make your own board.
![MicroModem](https://raw.githubusercontent.com/markqvist/MicroModem/master/Design/Images/PCB-lo.png)
While this project is based on Arduino hardware, it does not use the Arduino IDE. The project has been implemented in your normal C with makefile style, and uses libraries from the open source BertOS.
Visit [my site](http://unsigned.io) for questions, comments and other details.

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/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2003,2004 Develer S.r.l. (http://www.develer.com/)
* Copyright 1999 Bernie Innocenti <bernie@codewiz.org>
*
* -->
*
* \brief CRC table and support routines
*
* \author Bernie Innocenti <bernie@codewiz.org>
*/
#include "crc.h"
/*
* The boot on AVR cpu is placed at the end of flash memory, but the avr
* address memory by byte and the pointers are 16bits long, so we are able
* to address 64Kbyte memory max. For this reason we can't read the crctab
* from flash, because it is placed at the end of memory. This is true every
* time we have an AVR cpu with more that 64Kbyte of flash. To fix this problem
* we let the compiler copy the table in RAM at startup. Obviously this solution
* is not efficent, but for now this is the only way.
*/
#if CPU_HARVARD && !(defined(ARCH_BOOT) && (ARCH & ARCH_BOOT))
#define CRC_TABLE const uint16_t PROGMEM crc16tab[256]
#else
#define CRC_TABLE const uint16_t crc16tab[256]
#endif
/**
* crctab calculated by Mark G. Mendel, Network Systems Corporation
*/
CRC_TABLE = {
0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0
};
uint16_t crc16(uint16_t crc, const void *buffer, size_t len)
{
const unsigned char *buf = (const unsigned char *)buffer;
while(len--)
crc = UPDCRC16(*buf++, crc);
return crc;
}

115
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/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2003, 2004 Develer S.r.l. (http://www.develer.com/)
* Copyright 1999 Bernie Innocenti <bernie@codewiz.org>
*
* -->
*
* \brief Cyclic Redundancy Check 16 (CRC). This algorithm is the one used by the XMODEM protocol.
*
* \note This algorithm is incompatible with the CCITT-CRC16.
*
* This code is based on the article Copyright 1986 Stephen Satchell.
*
* Programmers may incorporate any or all code into their programs,
* giving proper credit within the source. Publication of the
* source routines is permitted so long as proper credit is given
* to Stephen Satchell, Satchell Evaluations and Chuck Forsberg,
* Omen Technology.
*
* \author Bernie Innocenti <bernie@codewiz.org>
*
* $WIZ$ module_name = "crc16"
*/
#ifndef ALGO_CRC_H
#define ALGO_CRC_H
#include "cfg/cfg_arch.h"
#include <cfg/compiler.h>
#include <cpu/pgm.h>
EXTERN_C_BEGIN
/* CRC table */
extern const uint16_t crc16tab[256];
/**
* \brief Compute the updated CRC16 value for one octet (macro version)
*
* \note This version is only intended for old/broken compilers.
* Use the inline function in new code.
*
* \param c New octet (range 0-255)
* \param oldcrc Previous CRC16 value (referenced twice, beware of side effects)
*/
#if CPU_HARVARD && !(defined(ARCH_BOOT) && (ARCH & ARCH_BOOT))
#define UPDCRC16(c, oldcrc) (pgm_read_uint16_t(&crc16tab[((oldcrc) >> 8) ^ ((unsigned char)(c))]) ^ ((oldcrc) << 8))
#else
#define UPDCRC16(c, oldcrc) ((crc16tab[((oldcrc) >> 8) ^ ((unsigned char)(c))]) ^ ((oldcrc) << 8))
#endif
/** CRC-16 init value */
#define CRC16_INIT_VAL ((uint16_t)0)
#ifdef INLINE
/**
* \brief Compute the updated CRC16 value for one octet (inline version)
*/
INLINE uint16_t updcrc16(uint8_t c, uint16_t oldcrc)
{
#if CPU_HARVARD && !(defined(ARCH_BOOT) && (ARCH & ARCH_BOOT))
return pgm_read_uint16_t(&crc16tab[(oldcrc >> 8) ^ c]) ^ (oldcrc << 8);
#else
return crc16tab[(oldcrc >> 8) ^ c] ^ (oldcrc << 8);
#endif
}
#endif // INLINE
/**
* This function implements the CRC 16 calculation on a buffer.
*
* \param crc Current CRC16 value.
* \param buf The buffer to perform CRC calculation on.
* \param len The length of the Buffer.
*
* \return The updated CRC16 value.
*/
extern uint16_t crc16(uint16_t crc, const void *buf, size_t len);
int crc_testSetup(void);
int crc_testRun(void);
int crc_testTearDown(void);
EXTERN_C_END
#endif /* ALGO_CRC_H */

83
bertos/algo/crc_ccitt.c
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/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2009 Develer S.r.l. (http://www.develer.com/)
*
* -->
*
* \brief CRC-CCITT table and support routines
*
* \author Francesco Sacchi <batt@develer.com>
*/
#include "crc_ccitt.h"
const uint16_t PROGMEM crc_ccitt_tab[256] = {
0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78,
};
uint16_t crc_ccitt(uint16_t crc, const void *buffer, size_t len)
{
const unsigned char *buf = (const unsigned char *)buffer;
while (len--)
crc = updcrc_ccitt(*buf++, crc);
return crc;
}

78
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@ -1,78 +0,0 @@
/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2009 Develer S.r.l. (http://www.develer.com/)
*
* -->
*
* \brief CCITT Cyclic Redundancy Check (CRC-CCITT).
*
* \note This algorithm is incompatible with the CRC16.
*
* \author Francesco Sacchi <batt@develer.com>
*
* $WIZ$ module_name = "crc-ccitt"
*/
#ifndef ALGO_CRC_CCITT_H
#define ALGO_CRC_CCITT_H
#include <cfg/compiler.h>
#include <cpu/pgm.h>
EXTERN_C_BEGIN
/* CRC table */
extern const uint16_t crc_ccitt_tab[256];
/**
* \brief Compute the updated CRC-CCITT value for one octet (inline version)
*/
INLINE uint16_t updcrc_ccitt(uint8_t c, uint16_t oldcrc)
{
return (oldcrc >> 8) ^ pgm_read16(&crc_ccitt_tab[(oldcrc ^ c) & 0xff]);
}
/** CRC-CCITT init value */
#define CRC_CCITT_INIT_VAL ((uint16_t)0xFFFF)
/**
* This function implements the CRC-CCITT calculation on a buffer.
*
* \param crc Current CRC-CCITT value.
* \param buf The buffer to perform CRC calculation on.
* \param len The length of the Buffer.
*
* \return The updated CRC-CCITT value.
*/
extern uint16_t crc_ccitt(uint16_t crc, const void *buf, size_t len);
EXTERN_C_END
#endif /* ALGO_CRC_CCITT_H */

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/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2008 Develer S.r.l. (http://www.develer.com/)
*
* -->
*
* \brief Configuration file for the ADC module.
*
* \author Daniele Basile <asterix@develer.com>
*/
#ifndef CFG_ADC_H
#define CFG_ADC_H
/**
* Module logging level.
*
* $WIZ$ type = "enum"
* $WIZ$ value_list = "log_level"
*/
#define ADC_LOG_LEVEL LOG_LVL_INFO
/**
* Module logging format.
*
* $WIZ$ type = "enum"
* $WIZ$ value_list = "log_format"
*/
#define ADC_LOG_FORMAT LOG_FMT_VERBOSE
/**
* Clock Frequency for ADC conversion.
* This frequency will be rounded down to an integer
* submultiple of CPU_FREQ.
*
* $WIZ$ type = "int"
* $WIZ$ supports = "at91"
* $WIZ$ max = 5000000
*/
#define CONFIG_ADC_CLOCK 4800000UL
/**
* Minimum time for starting up a conversion [us].
*
* $WIZ$ type = "int"
* $WIZ$ min = 20
* $WIZ$ supports = "at91"
*/
#define CONFIG_ADC_STARTUP_TIME 20
/**
* Minimum time for sample and hold [ns].
*
* $WIZ$ type = "int"
* $WIZ$ min = 600
* $WIZ$ supports = "at91"
*/
#define CONFIG_ADC_SHTIME 834
/**
* ADC Voltage Reference.
*
* $WIZ$ type = "enum"
* $WIZ$ value_list = "avr_adc_refs"
* $WIZ$ supports = "avr"
*/
#define CONFIG_ADC_AVR_REF ADC_AVR_AVCC
/**
* ADC clock divisor from main crystal.
*
* $WIZ$ type = "int"
* $WIZ$ min = 2
* $WIZ$ max = 128
* $WIZ$ supports = "avr"
*/
#define CONFIG_ADC_AVR_DIVISOR 2
/**
* Enable ADC strobe for debugging ADC ISR.
*
* $WIZ$ type = "boolean"
*/
#define CONFIG_ADC_STROBE 0
/**
* Start up timer[s] = startup value / ADCClock [Hz]
*
* $WIZ$ type = "enum"
* $WIZ$ value_list = "sam3_adc_sut"
* $WIZ$ supports = "sam3"
*/
#define CONFIG_ADC_SUT ADC_SUT512
/**
* Analog Settling Time[s] = settling value / ADCClock[Hz]
*
* $WIZ$ type = "enum"
* $WIZ$ value_list = "sam3_adc_stt"
* $WIZ$ supports = "sam3"
*/
#define CONFIG_ADC_STTLING ADC_AST17
/**
* Tracking Time[s] = (TRACKTIM + 1) / ADCClock[Hz]
*
* $WIZ$ type = "int"
* $WIZ$ min = 0
* $WIZ$ supports = "sam3"
*/
#define CONFIG_ADC_TRACKTIM 0
/**
* Transfer Period[s] = (TRANSFER * 2 + 3) ADCClock[Hz]
*
* $WIZ$ type = "int"
* $WIZ$ min = 0
* $WIZ$ supports = "sam3"
*/
#define CONFIG_ADC_TRANSFER 1
#endif /* CFG_ADC_H */

52
bertos/cfg/cfg_arch.h
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@ -1,52 +0,0 @@
/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2003,2004 Develer S.r.l. (http://www.develer.com/)
* Copyright 2001,2002,2003 Bernie Innocenti <bernie@codewiz.org>
*
* -->
*
* \brief Set system configuration.
*
*
* \author Bernie Innocenti <bernie@codewiz.org>
*
*/
#ifndef CFG_ARCH_CONFIG_H
#define CFG_ARCH_CONFIG_H
#define ARCH_DEFAULT (1<<0) ///< Default architecture
#define ARCH_EMUL (1<<2) ///< EMUL architecture
#define ARCH_QT (1<<3) ///< QT architecture
#define ARCH_UNITTEST (1<<4) ///< UNITTEST architecture
#define ARCH_NIGHTTEST (1<<5) ///< NIGHTTEST architecture
#endif /* CFG_ARCH_CONFIG_H */

46
bertos/cfg/cfg_attr.h
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@ -1,46 +0,0 @@
/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2008 Develer S.r.l. (http://www.develer.com/)
* All Rights Reserved.
* -->
*
* \brief Configuration file for Debug module.
*
*
* \author Daniele Basile <asterix@develer.com>
*/
#ifndef CFG_ATTR_H
#define CFG_ATTR_H
/// Put a function or critical code in fast memory.
#define CONFIG_FAST_MEM 0
#endif /* CFG_ATTR_H */

75
bertos/cfg/cfg_ax25.h
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@ -1,75 +0,0 @@
/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2008 Develer S.r.l. (http://www.develer.com/)
*
* -->
*
* \brief Configuration file for the AX25 protocol module.
*
* \author Francesco Sacchi <batt@develer.com>
*/
#ifndef CFG_AX25_H
#define CFG_AX25_H
/**
* Module logging level.
*
* $WIZ$ type = "enum"
* $WIZ$ value_list = "log_level"
*/
#define AX25_LOG_LEVEL LOG_LVL_WARN
/**
* Module logging format.
*
* $WIZ$ type = "enum"
* $WIZ$ value_list = "log_format"
*/
#define AX25_LOG_FORMAT LOG_FMT_TERSE
/**
* AX25 frame buffer lenght.
*
* $WIZ$ type = "int"
* $WIZ$ min = 18
*/
#define CONFIG_AX25_FRAME_BUF_LEN 330
/**
* Enable repeaters listing in AX25 frames.
* If enabled use 56 addtional bytes of RAM
* for each message received.
*
* $WIZ$ type = "boolean"
*/
#define CONFIG_AX25_RPT_LST 1
#endif /* CFG_AX25_H */

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