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https://github.com/DJ2LS/FreeDATA
synced 2024-05-14 08:04:33 +00:00
bleeding edge ARQ RPT
no working, but with tooo much debugging output furthermore the frame ACK is not working correctly on the TX side
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DJ2LS
GitHub
parent
eb7f98e2e1
commit
6adf7db483
3 changed files with 58 additions and 50 deletions
69
arq.py
69
arq.py
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@ -25,14 +25,11 @@ static.ARQ_ACK_PAYLOAD_PER_FRAME = 14 - 2#
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def arq_ack_timeout():
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static.ARQ_ACK_TIMEOUT = 1
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def arq_rpt_timeout():
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static.ARQ_RPT_TIMEOUT = True
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def data_received(data_in):
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static.ARQ_RX_TIMEOUT = time.time() + static.ARQ_RX_TIMEOUT_SECONDS
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while time.time() < static.ARQ_RX_TIMEOUT:
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# arqframe = frame_type + \ # 1 [:1] # frame type and current number of arq frame of (current) burst
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# bytes([static.ARQ_TX_N_FRAMES_PER_BURST]) + \ # 1 [1:2] # total number of arq frames per (current) burst
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@ -80,8 +77,13 @@ def data_received(data_in):
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#allocate ARQ_RX_BURST_BUFFER as a list with "None" if not already done. This should be done only once per burst!
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# here we will save the N frame of a burst to N list position so we can explicit search for it
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print(len(static.ARQ_RX_BURST_BUFFER))
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print(static.ARQ_N_FRAME)
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if static.ARQ_N_RX_FRAMES_PER_BURSTS != len(static.ARQ_RX_BURST_BUFFER) and static.ARQ_N_FRAME == 1 and frame_type != 51:
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static.ARQ_RX_BURST_BUFFER = []
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print("ITERATOR!!!!!!!!!!!!!!")
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for i in range(0,static.ARQ_N_RX_FRAMES_PER_BURSTS+1):
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static.ARQ_RX_BURST_BUFFER.insert(i,None)
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@ -90,12 +92,17 @@ def data_received(data_in):
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static.ARQ_RX_BURST_BUFFER[static.ARQ_N_FRAME] = bytes(data_in)
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static.ARQ_RX_FRAME_BUFFER[static.ARQ_RX_N_CURRENT_ARQ_FRAME] = bytes(data_in)
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for i in range(len(static.ARQ_RX_BURST_BUFFER)):
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print(static.ARQ_RX_BURST_BUFFER[i])
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# -------------------------- ARQ BURST CHECKER
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# - ------------------------- ARQ BURST CHECKER
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# run only if we recieved all ARQ FRAMES per ARQ BURST
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if static.ARQ_N_FRAME == static.ARQ_N_RX_FRAMES_PER_BURSTS and static.ARQ_RX_BURST_BUFFER.count(None) == 1: #if received bursts are equal to burst number in frame
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#if static.ARQ_N_FRAME == static.ARQ_N_RX_FRAMES_PER_BURSTS and static.ARQ_RX_BURST_BUFFER.count(None) == 1: #if received bursts are equal to burst number in frame
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if static.ARQ_RX_BURST_BUFFER.count(None) == 1: #count nones
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logging.info("ARQ | TX | BURST ACK")
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#BUILDING ACK FRAME FOR BURST -----------------------------------------------
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@ -152,8 +159,9 @@ def data_received(data_in):
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# --------------- IF LIST NOT CONTAINS "None" stick everything together
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complete_data_frame = bytearray()
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print("static.ARQ_RX_FRAME_BUFFER.count(None)" + str(static.ARQ_RX_FRAME_BUFFER.count(None)))
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if static.ARQ_RX_FRAME_BUFFER.count(None) == 1: ## 1 because position 0 of list will alaways be None in our case
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print("DECODING FRAME!")
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for frame in range(1,len(static.ARQ_RX_FRAME_BUFFER)):
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raw_arq_frame = static.ARQ_RX_FRAME_BUFFER[frame]
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arq_frame_payload = raw_arq_frame[8:]
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@ -213,13 +221,14 @@ def data_received(data_in):
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else:
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logging.info("ARQ | RX | DATA FRAME NOT SUCESSFULLY RECEIVED!")
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break
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#break
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def burst_ack_received():
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logging.info("ARQ | RX | BURST ACK RCVD!")
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static.ARQ_ACK_TIMEOUT = 1 #Force timer to stop waiting
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static.ARQ_ACK_RECEIVED = 1 #Force data loops of TNC to stop and continue with next frame
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static.RPT_ACK_RECEIVED = False
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def burst_rpt_received(data_in):
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@ -312,18 +321,14 @@ def transmit(data_out):
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logging.debug("ARQ | RX | WAITING FOR BURST ACK")
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static.ARQ_STATE = 'RECEIVING_ACK'
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timer = threading.Timer(static.ARQ_ACK_TIMEOUT_SECONDS, arq_ack_timeout)
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timer.start()
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# --------------------------- WHILE TIMEOUT NOT REACHED AND NO ACK RECEIVED --> LISTEN
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while static.ARQ_ACK_TIMEOUT == 0 and static.ARQ_RPT_RECEIVED == False and static.ARQ_ACK_RECEIVED == 0:
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time.sleep(0.01) # lets reduce CPU load a little bit
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#print(static.ARQ_STATE)
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#--------------------------------------------------------------------------------------------------------------
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if static.ARQ_RPT_RECEIVED == True:
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@ -334,39 +339,37 @@ def transmit(data_out):
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while static.ARQ_STATE == 'SENDING_DATA':
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time.sleep(0.05)
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# --------------------------- START TIMER FOR WAITING FOR ACK ---> IF TIMEOUT REACHED, ACK_TIMEOUT = 1
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#reset timer and ack state
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static.ARQ_FRAME_ACK_RECEIVED = 0
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static.ARQ_ACK_RECEIVED = 0
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static.ARQ_ACK_TIMEOUT = 0
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logging.debug("ARQ | RX | WAITING FOR BURST ACK")
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static.ARQ_STATE = 'RECEIVING_ACK'
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timer = threading.Timer(static.ARQ_ACK_TIMEOUT_SECONDS, arq_ack_timeout)
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timer = threading.Timer(static.ARQ_RPT_TIMEOUT_SECONDS, arq_rpt_timeout)
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timer.start()
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while static.ARQ_ACK_TIMEOUT == 0 and static.ARQ_RPT_RECEIVED == False and static.ARQ_ACK_RECEIVED == 0:
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print("kommen wir hier überhaupt an?")
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while static.ARQ_ACK_TIMEOUT == 0 and static.ARQ_ACK_RECEIVED == 0 and static.ARQ_RPT_TIMEOUT == False:
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time.sleep(0.01) # lets reduce CPU load a little bit
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#print(static.ARQ_STATE)
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print("waiting for ack while rpt")
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if static.ARQ_ACK_RECEIVED == 1:
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print("ACK WHILE RPT")
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time.sleep(1)
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static.ARQ_ACK_TIMEOUT = 1
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static.ARQ_RPT_RECEIVED = False
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static.ARQ_RPT_TIMEOUT == False
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break
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#--------------------------------------------------------------------------------------------------------------
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if static.ARQ_ACK_RECEIVED == 0 and static.ARQ_ACK_TIMEOUT == 1:
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if static.ARQ_ACK_RECEIVED == 0 and static.ARQ_ACK_TIMEOUT == 1 and static.ARQ_RPT_TIMEOUT == True:
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#logging.info("ARQ | RX | ACK TIMEOUT | SENDING ARQ BURST AGAIN")
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pass
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#--------------- BREAK LOOP IF ACK HAS BEEN RECEIVED OR FRAME ACK HAS BEEN RECEIVED
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if static.ARQ_ACK_RECEIVED == 1:
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print("der interator increment ist wichtig!")
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#-----------IF ACK RECEIVED, INCREMENT ITERATOR FOR MAIN LOOP TO PROCEED WITH NEXT FRAMES/BURST
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static.ARQ_N_SENT_FRAMES = static.ARQ_N_SENT_FRAMES + static.ARQ_TX_N_FRAMES_PER_BURST
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break
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@ -402,6 +405,6 @@ def transmit(data_out):
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# BURST MACHINE TO DEFINE N BURSTS PER FRAME ---> LATER WE CAN USE CHANNEL MESSUREMENT TO SET FRAMES PER BURST
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def get_n_frames_per_burst():
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n_frames_per_burst = randrange(1,10)
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#n_frames_per_burst = 1
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#n_frames_per_burst = randrange(1,10)
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n_frames_per_burst = 4
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return n_frames_per_burst
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16
modem.py
16
modem.py
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@ -143,6 +143,7 @@ class RF():
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# GET ARQ BURST FRAME VOM BUFFER AND MODULATE IT
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def transmit_arq_burst(self):
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static.ARQ_STATE = 'SENDING_DATA'
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time.sleep(3)
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self.c_lib.freedv_open.restype = ctypes.POINTER(ctypes.c_ubyte)
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freedv = self.c_lib.freedv_open(static.FREEDV_DATA_MODE)
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@ -209,9 +210,9 @@ class RF():
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frame_type = 10 + missing_frame #static.ARQ_TX_N_FRAMES_PER_BURST
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frame_type = bytes([frame_type])
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payload_data = bytes(static.TX_BUFFER[static.ARQ_N_SENT_FRAMES + missing_frame])
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payload_data = bytes(static.TX_BUFFER[static.ARQ_N_SENT_FRAMES + missing_frame - 1])
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n_current_arq_frame = static.ARQ_N_SENT_FRAMES + missing_frame + 1
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n_current_arq_frame = static.ARQ_N_SENT_FRAMES + missing_frame
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static.ARQ_TX_N_CURRENT_ARQ_FRAME = n_current_arq_frame.to_bytes(2, byteorder='big')
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n_total_arq_frame = len(static.TX_BUFFER)
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@ -253,6 +254,7 @@ class RF():
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#--------------------------------------------------------------------------------------------------------
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def receive(self,data_mode,signalling_mode):
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force = False
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self.c_lib.freedv_open.restype = ctypes.POINTER(ctypes.c_ubyte)
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@ -294,7 +296,7 @@ class RF():
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self.c_lib.freedv_rawdatarx.argtype = [ctypes.POINTER(ctypes.c_ubyte), data_bytes_out, data_in] # check if really neccessary
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nbytes = self.c_lib.freedv_rawdatarx(freedv_data, data_bytes_out, data_in) # demodulate audio
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#print(self.c_lib.freedv_get_rx_status(freedv_data))
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print(self.c_lib.freedv_get_rx_status(freedv_data))
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#-------------STUCK IN SYNC DETECTOR
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@ -340,10 +342,11 @@ class RF():
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n_frames_per_burst = int.from_bytes(bytes(data_bytes_out[1:2]), "big")
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if 50 >= frametype >= 10:
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if frame != 3:
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if frame != 3 or force == True:
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arq.data_received(bytes(data_bytes_out[:-2])) #send payload data to arq checker without CRC16
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else:
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print("---------------------------3er FRAME")
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force = True
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else:
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print("MODE: " + str(data_mode) + " DATA: " + str(bytes(data_bytes_out)))
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@ -352,6 +355,9 @@ class RF():
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if frame == n_frames_per_burst:
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self.c_lib.freedv_set_sync(freedv_data, 0) #FORCE UNSYNC
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if static.ARQ_RX_BURST_BUFFER.count(None) == 1:
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self.c_lib.freedv_set_sync(freedv_data, 0)
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while static.ARQ_STATE == 'IDLE' or static.ARQ_STATE == 'RECEIVING_ACK':
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time.sleep(0.01)
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@ -387,7 +393,7 @@ class RF():
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rxstatus = self.c_lib.freedv_get_rx_status(freedv_signalling)
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#print(rxstatus)
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print(rxstatus)
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if nbytes == static.FREEDV_SIGNALLING_BYTES_PER_FRAME or rxstatus == 10:
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self.c_lib.freedv_set_sync(freedv_signalling, 0) #FORCE UNSYNC
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@ -87,9 +87,8 @@ ARQ_FRAME_ACK_RECEIVED = 0 # set to 1 if FRAME ACK received
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ARQ_ACK_TIMEOUT = 0 # set to 1 if timeut reached
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ARQ_ACK_TIMEOUT_SECONDS = 4.0 #timeout for waiting for ACK frames
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ARQ_RX_TIMEOUT = 0
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ARQ_RX_TIMEOUT_SECONDS = 10.0 #timeout for waiting for a frame before resetting RX machine
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ARQ_RPT_TIMEOUT = False
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ARQ_RPT_TIMEOUT_SECONDS = 4.0
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ARQ_RPT_RECEIVED = False #indicate if RPT frame has been received
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ARQ_RPT_FRAMES = []
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