173 lines
3.6 KiB
C
173 lines
3.6 KiB
C
#include "SD.h"
|
|
#include "hardware/Crypto.h"
|
|
|
|
FATFS sdfs;
|
|
|
|
uint8_t sd_scheduler_timer = 0;
|
|
uint8_t sd_status = SD_STATUS_UNKNOWN;
|
|
bool sd_mountstate = false;
|
|
|
|
// Job flags
|
|
bool sd_flag_needs_automount = false;
|
|
bool sd_flag_needs_autounmount = false;
|
|
bool sd_flag_was_automounted = false;
|
|
bool sd_flag_was_autounmounted = false;
|
|
|
|
void sd_init(void) {
|
|
SPI_DDR |= _BV(SPI_MOSI) | _BV(SPI_CLK);
|
|
SPI_DDR &= ~(_BV(SPI_MISO));
|
|
SPCR = (1<<SPE) | (1<<MSTR) | (1<<SPR0);
|
|
|
|
SD_CS_DDR |= _BV(SD_CS_PIN);
|
|
SD_DETECT_DDR &= ~_BV(SD_DETECT_PIN);
|
|
SD_DETECT_PORT |= _BV(SD_DETECT_PIN); // Enable pull-up
|
|
}
|
|
|
|
void sd_automounted_hook(void) {
|
|
sd_statuschange_indication(1);
|
|
crypto_init();
|
|
}
|
|
|
|
void sd_autounmounted_hook(void) {
|
|
sd_statuschange_indication(0);
|
|
if (crypto_enabled()) {
|
|
LED_indicate_error_crypto();
|
|
}
|
|
}
|
|
|
|
void sd_jobs(void) {
|
|
if (sd_flag_needs_automount) {
|
|
sd_flag_needs_automount = false;
|
|
sd_automount();
|
|
}
|
|
|
|
if (sd_flag_needs_autounmount) {
|
|
sd_flag_needs_autounmount = false;
|
|
sd_autounmount();
|
|
}
|
|
|
|
if (sd_flag_was_automounted) {
|
|
sd_flag_was_automounted = false;
|
|
sd_automounted_hook();
|
|
}
|
|
|
|
if (sd_flag_was_autounmounted) {
|
|
sd_flag_was_autounmounted = false;
|
|
sd_autounmounted_hook();
|
|
}
|
|
}
|
|
|
|
void sd_statuschange_indication(uint8_t pattern) {
|
|
if (pattern == 1) {
|
|
for (uint8_t i = 0; i < 4; i++) {
|
|
LED_STATUS_OFF();
|
|
delay_ms(65);
|
|
LED_STATUS_ON();
|
|
delay_ms(30);
|
|
}
|
|
}
|
|
|
|
if (pattern == 0) {
|
|
for (uint8_t i = 0; i < 2; i++) {
|
|
LED_STATUS_OFF();
|
|
delay_ms(250);
|
|
LED_STATUS_ON();
|
|
delay_ms(20);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
bool sd_inserted(void) {
|
|
if (sd_status & SD_STATUS_NODISK) {
|
|
return false;
|
|
} else {
|
|
return true;
|
|
}
|
|
|
|
}
|
|
|
|
bool sd_card_ready(void) {
|
|
if (sd_status == SD_STATUS_READY) {
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool sd_mounted(void) {
|
|
return sd_mountstate;
|
|
}
|
|
|
|
bool sd_mount(void) {
|
|
if (sd_inserted()) {
|
|
FRESULT mount_result = 0xFF;
|
|
mount_result = f_mount(&sdfs, "", 1);
|
|
|
|
if (mount_result == 0) {
|
|
sd_mountstate = true;
|
|
|
|
} else {
|
|
sd_mountstate = false;
|
|
}
|
|
|
|
return sd_mountstate;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool sd_unmount(void) {
|
|
FRESULT unmount_result = 0xFF;
|
|
unmount_result = f_mount(0, "", 0);
|
|
|
|
if (unmount_result == 0) {
|
|
sd_mountstate = false;
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
void sd_automount(void) {
|
|
if (sd_mount()) {
|
|
sd_automounted_hook();
|
|
}
|
|
}
|
|
|
|
void sd_autounmount(void) {
|
|
if (sd_unmount()) {
|
|
sd_autounmounted_hook();
|
|
}
|
|
}
|
|
|
|
void sd_scheduler(void) {
|
|
sd_scheduler_timer++;
|
|
|
|
disk_timerproc();
|
|
sd_status = disk_status(0);
|
|
|
|
if (sd_scheduler_timer % 50 == 0) {
|
|
sd_scheduler_timer = 0;
|
|
|
|
if (!sd_mounted() && sd_inserted()) {
|
|
sd_flag_needs_automount = true;
|
|
}
|
|
|
|
if (!sd_inserted() && sd_mounted()) {
|
|
sd_flag_needs_autounmount = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// TODO: Get time from RTC or host
|
|
DWORD get_fattime (void)
|
|
{
|
|
// Returns current time packed into a DWORD variable
|
|
return ((DWORD)(2018 - 1980) << 25) // Year 2013
|
|
| ((DWORD)8 << 21) // Month 7
|
|
| ((DWORD)2 << 16) // Mday 28
|
|
| ((DWORD)20 << 11) // Hour 0..24
|
|
| ((DWORD)30 << 5) // Min 0
|
|
| ((DWORD)0 >> 1); // Sec 0
|
|
} |