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Added flow contorl for RNode interface

This commit is contained in:
Mark Qvist 2018-04-26 10:38:29 +02:00
parent ce270f4615
commit f02715bced
1 changed files with 32 additions and 9 deletions
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31
RNS/Interfaces/RNodeInterface.py
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@ -22,6 +22,7 @@ class KISS():
CMD_SF = chr(0x04)
CMD_RADIO_STATE = chr(0x05)
CMD_RADIO_LOCK = chr(0x06)
CMD_READY = chr(0x0F)
CMD_STAT_RX = chr(0x21)
CMD_STAT_TX = chr(0x22)
CMD_STAT_RSSI = chr(0x23)
@ -57,7 +58,7 @@ class RNodeInterface(Interface):
FREQ_MIN = 137000000
FREQ_MAX = 1020000000
def __init__(self, owner, name, port, frequency = None, bandwidth = None, txpower = None, sf = None):
def __init__(self, owner, name, port, frequency = None, bandwidth = None, txpower = None, sf = None, flow_control = True):
self.serial = None
self.owner = owner
self.name = name
@ -88,6 +89,10 @@ class RNodeInterface(Interface):
self.r_stat_rssi = None
self.r_random = None
self.packet_queue = []
self.flow_control = flow_control
self.interface_ready = False
self.validcfg = True
if (self.frequency < RNodeInterface.FREQ_MIN or self.frequency > RNodeInterface.FREQ_MAX):
RNS.log("Invalid frequency configured for "+str(self), RNS.LOG_ERROR)
@ -137,6 +142,7 @@ class RNodeInterface(Interface):
RNS.log("Configuring RNode interface...", RNS.LOG_VERBOSE)
self.initRadio()
if (self.validateRadioState()):
self.interface_ready = True
RNS.log(str(self)+" is configured and powered up")
else:
RNS.log("After configuring "+str(self)+", the actual radio parameters did not match your configuration.", RNS.LOG_ERROR)
@ -235,12 +241,28 @@ class RNodeInterface(Interface):
def processOutgoing(self,data):
if self.online:
if self.interface_ready:
if self.flow_control:
self.interface_ready = False
data = KISS.escape(data)
frame = chr(0xc0)+chr(0x00)+data+chr(0xc0)
written = self.serial.write(frame)
if written != len(frame):
raise IOError("Serial interface only wrote "+str(written)+" bytes of "+str(len(data)))
else:
self.queue(data)
def queue(self, data):
self.packet_queue.append(data)
def process_queue(self):
if len(self.packet_queue) > 0:
data = self.packet_queue.pop(0)
self.interface_ready = True
self.processOutgoing(data)
elif len(self.packet_queue) == 0:
self.interface_ready = True
def readLoop(self):
try:
@ -266,9 +288,6 @@ class RNodeInterface(Interface):
command_buffer = ""
elif (in_frame and len(data_buffer) < RNS.Reticulum.MTU):
if (len(data_buffer) == 0 and command == KISS.CMD_UNKNOWN):
# We only support one HDLC port for now, so
# strip off port nibble
byte = chr(ord(byte) & 0x0F)
command = byte
elif (command == KISS.CMD_DATA):
if (byte == KISS.FESC):
@ -363,6 +382,10 @@ class RNodeInterface(Interface):
RNS.log(str(self)+" hardware TX error (code "+RNS.hexrep(byte)+")", RNS.LOG_ERROR)
else:
RNS.log(str(self)+" hardware error (code "+RNS.hexrep(byte)+")", RNS.LOG_ERROR)
elif (command == KISS.CMD_READY):
# TODO: add timeout and reset if ready
# command never arrives
self.process_queue()
else:
time_since_last = int(time.time()*1000) - last_read_ms