From d81d1e49e5f8bebca85f4e7c63afbff6c1e5db9b Mon Sep 17 00:00:00 2001 From: DJ2LS <75909252+DJ2LS@users.noreply.github.com> Date: Wed, 10 Feb 2021 15:05:35 +0100 Subject: [PATCH] Delete arq.py --- arq.py | 460 --------------------------------------------------------- 1 file changed, 460 deletions(-) delete mode 100644 arq.py diff --git a/arq.py b/arq.py deleted file mode 100644 index ef60befd..00000000 --- a/arq.py +++ /dev/null @@ -1,460 +0,0 @@ -#!/usr/bin/env python3 -# -*- coding: utf-8 -*- -""" -Created on Sun Dec 27 20:43:40 2020 - -@author: DJ2LS -""" - -import logging -import threading -import time -from random import randrange - -import static -import modem -import helpers -import main - - -modem = modem.RF() - -static.ARQ_PAYLOAD_PER_FRAME = static.FREEDV_DATA_PAYLOAD_PER_FRAME - 3 #6?! -static.ARQ_ACK_PAYLOAD_PER_FRAME = 14 - 2# - -#def arq_ack_timeout(): -# static.ARQ_ACK_TIMEOUT = 1 - -#def arq_rpt_timeout(): -# static.ARQ_RPT_TIMEOUT = True - -def data_received(data_in): - - -# arqframe = frame_type + \ # 1 [:1] # frame type and current number of arq frame of (current) burst -# bytes([static.ARQ_TX_N_FRAMES_PER_BURST]) + \ # 1 [1:2] # total number of arq frames per (current) burst -# static.ARQ_N_CURRENT_ARQ_FRAME + \ # 2 [2:4] # current arq frame number -# static.ARQ_N_TOTAL_ARQ_FRAMES + \ # 2 [4:6] # total number arq frames -# static.ARQ_BURST_PAYLOAD_CRC + \ # 2 [6:8] # arq crc -# payload_data # N [8:N] # payload data - - - - static.ARQ_N_FRAME = int.from_bytes(bytes(data_in[:1]), "big") - 10 #get number of burst frame - static.ARQ_N_RX_FRAMES_PER_BURSTS = int.from_bytes(bytes(data_in[1:2]), "big") #get number of bursts from received frame - static.ARQ_RX_N_CURRENT_ARQ_FRAME = int.from_bytes(bytes(data_in[2:4]), "big") #get current number of total frames - static.ARQ_N_ARQ_FRAMES_PER_DATA_FRAME = int.from_bytes(bytes(data_in[4:6]), "big") # get get total number of frames - static.ARQ_BURST_PAYLOAD_CRC = data_in[6:8] - - - logging.debug("----------------------------------------------------------------") - logging.debug("ARQ_N_FRAME: " + str(static.ARQ_N_FRAME)) - logging.debug("ARQ_N_RX_FRAMES_PER_BURSTS: " + str(static.ARQ_N_RX_FRAMES_PER_BURSTS)) - logging.debug("ARQ_RX_N_CURRENT_ARQ_FRAME: " + str(static.ARQ_RX_N_CURRENT_ARQ_FRAME)) - logging.debug("ARQ_N_ARQ_FRAMES_PER_DATA_FRAME: " + str(static.ARQ_N_ARQ_FRAMES_PER_DATA_FRAME)) - logging.debug("static.ARQ_BURST_PAYLOAD_CRC: " + str(static.ARQ_BURST_PAYLOAD_CRC)) - logging.debug("----------------------------------------------------------------") - - - arq_percent_burst = int((static.ARQ_N_FRAME / static.ARQ_N_RX_FRAMES_PER_BURSTS)*100) - arq_percent_frame = int(((static.ARQ_RX_N_CURRENT_ARQ_FRAME)/static.ARQ_N_ARQ_FRAMES_PER_DATA_FRAME)*100) - - logging.info("ARQ | RX | ARQ FRAME [" + str(static.ARQ_N_FRAME) + "/" + str(static.ARQ_N_RX_FRAMES_PER_BURSTS) + "] [" + str(arq_percent_burst).zfill(3) + "%] --- TOTAL [" + str(static.ARQ_RX_N_CURRENT_ARQ_FRAME) + "/" + str(static.ARQ_N_ARQ_FRAMES_PER_DATA_FRAME) + "] [" + str(arq_percent_frame).zfill(3) + "%]" ) - - - - #allocate ARQ_RX_FRAME_BUFFER as a list with "None" if not already done. This should be done only once per burst! - # here we will save the N frame of a data frame to N list position so we can explicit search for it - - try: - static.ARQ_RX_FRAME_BUFFER[static.ARQ_RX_N_CURRENT_ARQ_FRAME] = bytes(data_in) - - except IndexError: - - static.ARQ_RX_FRAME_BUFFER = [] - for i in range(0,static.ARQ_N_ARQ_FRAMES_PER_DATA_FRAME+1): - static.ARQ_RX_FRAME_BUFFER.insert(i,None) - - static.ARQ_RX_FRAME_BUFFER[static.ARQ_RX_N_CURRENT_ARQ_FRAME] = bytes(data_in) - static.ARQ_FRAME_BOF_RECEIVED = False - static.ARQ_FRAME_EOF_RECEIVED = False - - - try: - static.ARQ_RX_BURST_BUFFER[static.ARQ_N_FRAME] = bytes(data_in) - - except IndexError: - - static.ARQ_RX_BURST_BUFFER = [] - for i in range(0,static.ARQ_N_RX_FRAMES_PER_BURSTS+1): - static.ARQ_RX_BURST_BUFFER.insert(i,None) - - static.ARQ_RX_BURST_BUFFER[static.ARQ_N_FRAME] = bytes(data_in) - - #for i in range(len(static.ARQ_RX_BURST_BUFFER)): - # print(static.ARQ_RX_BURST_BUFFER[i]) - -# - ------------------------- ARQ BURST CHECKER - - # run only if we recieved all ARQ FRAMES per ARQ BURST - if static.ARQ_RX_BURST_BUFFER.count(None) == 1: #count nones - logging.info("ARQ | TX | BURST ACK") - - #BUILDING ACK FRAME FOR BURST ----------------------------------------------- - ack_payload = b'BURST_ACK' - ack_frame = b'<' + ack_payload # < = 60 - - #TRANSMIT ACK FRAME FOR BURST----------------------------------------------- - modem.transmit_arq_ack(ack_frame) - - #clear burst buffer - static.ARQ_RX_BURST_BUFFER = [] - - #if decoded N frames are unequal to expected frames per burst - elif static.ARQ_N_FRAME == static.ARQ_N_RX_FRAMES_PER_BURSTS and static.ARQ_RX_BURST_BUFFER.count(None) != 1: - - # --------------- CHECK WHICH BURST FRAMES WE ARE MISSING ------------------------------------------- - - missing_frames = b'' - for burstnumber in range(1,len(static.ARQ_RX_BURST_BUFFER)): - - if static.ARQ_RX_BURST_BUFFER[burstnumber] == None: - frame_number = burstnumber.to_bytes(2, byteorder='big') - missing_frames += frame_number - - logging.info("ARQ | TX | RPT ARQ FRAMES [" + str(missing_frames) + "]") - - #BUILDING RPT FRAME FOR BURST ----------------------------------------------- - rpt_payload = missing_frames - rpt_frame = b'>' + rpt_payload #> = 63 - - #TRANSMIT RPT FRAME FOR BURST----------------------------------------------- - modem.transmit_arq_ack(rpt_frame) - - - -# ---------------------------- FRAME MACHINE - - # --------------- IF LIST NOT CONTAINS "None" stick everything together - complete_data_frame = bytearray() - #print("static.ARQ_RX_FRAME_BUFFER.count(None)" + str(static.ARQ_RX_FRAME_BUFFER.count(None))) - if static.ARQ_RX_FRAME_BUFFER.count(None) == 1: ## 1 because position 0 of list will alaways be None in our case - #print("DECODING FRAME!") - for frame in range(1,len(static.ARQ_RX_FRAME_BUFFER)): - raw_arq_frame = static.ARQ_RX_FRAME_BUFFER[frame] - arq_frame_payload = raw_arq_frame[8:] - - # -------- DETECT IF WE RECEIVED A FRAME HEADER THEN SAVE DATA TO GLOBALS - if arq_frame_payload[2:4].startswith(static.FRAME_BOF): - static.FRAME_CRC = arq_frame_payload[:2] - static.ARQ_FRAME_BOF_RECEIVED = True - - arq_frame_payload = arq_frame_payload.split(static.FRAME_BOF) - arq_frame_payload = arq_frame_payload[1] - - # -------- DETECT IF WE RECEIVED A FRAME FOOTER THEN SAVE DATA TO GLOBALS - if arq_frame_payload.rstrip(b'\x00').endswith(static.FRAME_EOF): - static.ARQ_FRAME_EOF_RECEIVED = True - - arq_frame_payload = arq_frame_payload.split(static.FRAME_EOF) - arq_frame_payload = arq_frame_payload[0] - - - # --------- AFTER WE SEPARATED BOF AND EOF, STICK EVERYTHING TOGETHER - complete_data_frame = complete_data_frame + arq_frame_payload - - - #check if Begin of Frame BOF and End of Frame EOF are received, then start calculating CRC and sticking everything together - if static.ARQ_FRAME_BOF_RECEIVED == True and static.ARQ_FRAME_EOF_RECEIVED == True: - - frame_payload_crc = helpers.get_crc_16(complete_data_frame) - - #IF THE FRAME PAYLOAD CRC IS EQUAL TO THE FRAME CRC WHICH IS KNOWN FROM THE HEADER --> SUCCESS - if frame_payload_crc == static.FRAME_CRC: - logging.info("ARQ | RX | DATA FRAME SUCESSFULLY RECEIVED! - TIME TO PARTY") - #append received frame to RX_BUFFER - static.RX_BUFFER.append(complete_data_frame) - - #BUILDING ACK FRAME FOR DATA FRAME ----------------------------------------------- - ack_payload = b'FRAME_ACK' - ack_frame = b'='+ ack_payload + bytes(static.FRAME_CRC) # < = 61 - - #TRANSMIT ACK FRAME FOR BURST----------------------------------------------- - time.sleep(3) #0.5 - logging.info("ARQ | TX | ARQ DATA FRAME ACK [" + str(static.FRAME_CRC.hex()) +"]") - - modem.transmit_arq_ack(ack_frame) - - # clearing buffers and resetting counters - static.ARQ_RX_BURST_BUFFER = [] - static.ARQ_RX_FRAME_BUFFER = [] - static.ARQ_FRAME_BOF_RECEIVED = False - static.ARQ_FRAME_EOF_RECEIVED = False - static.ARQ_N_ARQ_FRAMES_PER_DATA_FRAME = 0 - - #print("----------------------------------------------------------------") - #print(static.RX_BUFFER[-1]) - #print("----------------------------------------------------------------") - - else: - logging.info("ARQ | RX | DATA FRAME NOT SUCESSFULLY RECEIVED!") - - - - - -def transmit(data_out): - - static.ARQ_PAYLOAD_PER_FRAME = static.FREEDV_DATA_PAYLOAD_PER_FRAME - 8 #3 ohne ARQ_TX_N_FRAMES_PER_BURST - frame_header_length = 4 - - n_arq_frames_per_data_frame = (len(data_out)+frame_header_length) // static.ARQ_PAYLOAD_PER_FRAME + ((len(data_out)+frame_header_length) % static.ARQ_PAYLOAD_PER_FRAME > 0) - - frame_payload_crc = helpers.get_crc_16(data_out) - - # This is the total frame with frame header, which will be send - data_out = frame_payload_crc + static.FRAME_BOF + data_out + static.FRAME_EOF - # 2 2 N 2 - - # --------------------------------------------- LETS CREATE A BUFFER BY SPLITTING THE FILES INTO PEACES - static.TX_BUFFER = [data_out[i:i+static.ARQ_PAYLOAD_PER_FRAME] for i in range(0, len(data_out), static.ARQ_PAYLOAD_PER_FRAME)] - static.TX_BUFFER_SIZE = len(static.TX_BUFFER) - - logging.info("ARQ | TX | DATA FRAME --- BYTES: " + str(len(data_out)) + " ARQ FRAMES: " + str(static.TX_BUFFER_SIZE)) - - # --------------------------------------------- THIS IS THE MAIN LOOP----------------------------------------------------------------- - - static.ARQ_N_SENT_FRAMES = 0 # SET N SENT FRAMES TO 0 FOR A NEW SENDING CYCLE - while static.ARQ_N_SENT_FRAMES <= static.TX_BUFFER_SIZE: - - static.ARQ_TX_N_FRAMES_PER_BURST = get_n_frames_per_burst() - - # ----------- CREATE FRAME TOTAL PAYLOAD TO BE ABLE TO CREATE CRC FOR IT - try: # DETECT IF LAST BURST TO PREVENT INDEX ERROR OF BUFFER - - for i in range(static.ARQ_TX_N_FRAMES_PER_BURST): # Loop through TX_BUFFER LIST - len(static.TX_BUFFER[static.ARQ_N_SENT_FRAMES + i]) #we calculate the length to trigger a list index error - - except IndexError: # IF LAST BURST DETECTED BUILD CRC WITH LESS FRAMES AND SET static.ARQ_TX_N_FRAMES_PER_BURST TO VALUE OF REST! - - if static.ARQ_N_SENT_FRAMES == 0 and (static.ARQ_TX_N_FRAMES_PER_BURST > static.TX_BUFFER_SIZE): #WE CANT DO MODULO 0 --> CHECK IF FIRST FRAME == LAST FRAME - static.ARQ_TX_N_FRAMES_PER_BURST = static.TX_BUFFER_SIZE - - elif static.ARQ_N_SENT_FRAMES == 1 and (static.ARQ_TX_N_FRAMES_PER_BURST > static.TX_BUFFER_SIZE): # MODULO 1 WILL ALWAYS BE 0 --> THIS FIXES IT - static.ARQ_TX_N_FRAMES_PER_BURST = static.TX_BUFFER_SIZE - static.ARQ_N_SENT_FRAMES - - else: - static.ARQ_TX_N_FRAMES_PER_BURST = (static.TX_BUFFER_SIZE % static.ARQ_N_SENT_FRAMES) - - #--------------------------------------------- N ATTEMPTS TO SEND BURSTS IF ACK RECEPTION FAILS - for static.TX_N_RETRIES in range(static.TX_N_MAX_RETRIES): - - - - - if static.ARQ_N_SENT_FRAMES + 1 <= static.TX_BUFFER_SIZE: - logging.info("ARQ | TX | F:[" + str(static.ARQ_N_SENT_FRAMES+1) + "-" + str(static.ARQ_N_SENT_FRAMES + static.ARQ_TX_N_FRAMES_PER_BURST) + "] | T:[" + str(static.ARQ_N_SENT_FRAMES) + "/" + str(static.TX_BUFFER_SIZE) + "] [" + str(int(static.ARQ_N_SENT_FRAMES/(static.TX_BUFFER_SIZE)*100)).zfill(3) + "%] | A:[" + str(static.TX_N_RETRIES+1) + "/" + str(static.TX_N_MAX_RETRIES) + "]") - - - # lets start a thread to transmit nonblocking - TRANSMIT_ARQ_BURST_THREAD = threading.Thread(target=modem.transmit_arq_burst, name="TRANSMIT_ARQ_BURST") - TRANSMIT_ARQ_BURST_THREAD.start() - - # lets wait during sending. After sending is finished we will continue - while static.ARQ_STATE == 'SENDING_DATA': - time.sleep(0.01) - #print("sending.....") - - - # --------------------------- START TIMER FOR WAITING FOR ACK ---> IF TIMEOUT REACHED, ACK_TIMEOUT = 1 - #reset timer and ack state - #static.ARQ_FRAME_ACK_RECEIVED = False - #static.ARQ_ACK_RECEIVED = False - #static.ARQ_RX_ACK_TIMEOUT = False - - - logging.info("ARQ | RX | WAITING FOR BURST ACK") - static.ARQ_STATE = 'RECEIVING_SIGNALLING' - - helpers.arq_reset_timeout(False) - helpers.arq_reset_ack(False) - - acktimer = threading.Timer(static.ARQ_RX_ACK_TIMEOUT_SECONDS, helpers.arq_ack_timeout) - acktimer.start() - - print(".............................") - print("static.ARQ_STATE " + str(static.ARQ_STATE)) - print("static.ARQ_FRAME_ACK_RECEIVED " + str(static.ARQ_FRAME_ACK_RECEIVED)) - print("static.ARQ_ACK_RECEIVED " + str(static.ARQ_ACK_RECEIVED)) - print("static.ARQ_RX_ACK_TIMEOUT " + str(static.ARQ_RX_ACK_TIMEOUT)) - print("static.ARQ_RPT_RECEIVED " + str(static.ARQ_RPT_RECEIVED)) - print(".............................") - - # --------------------------- WHILE TIMEOUT NOT REACHED AND NO ACK RECEIVED --> LISTEN - while static.ARQ_ACK_RECEIVED != True and static.ARQ_RPT_RECEIVED != True and static.ARQ_FRAME_ACK_RECEIVED != True and static.ARQ_RX_FRAME_TIMEOUT != True and static.ARQ_RX_ACK_TIMEOUT != True: - time.sleep(0.01) # lets reduce CPU load a little bit - print(static.ARQ_STATE) - - if static.ARQ_RPT_RECEIVED == True: - - logging.info("ARQ | RX | REQUEST FOR REPEATING FRAMES: " + str(static.ARQ_RPT_FRAMES)) - logging.info("ARQ | TX | SENDING REQUESTED FRAMES: " + str(static.ARQ_RPT_FRAMES)) - - TRANSMIT_ARQ_BURST_THREAD = threading.Thread(target=modem.transmit_arq_burst, name="TRANSMIT_ARQ_BURST") - TRANSMIT_ARQ_BURST_THREAD.start() - - # lets wait during sending. After sending is finished we will continue - while static.ARQ_STATE == 'SENDING_DATA': - time.sleep(0.01) - - - static.ARQ_STATE = 'RECEIVING_SIGNALLING' - - helpers.arq_reset_timeout(False) - helpers.arq_reset_ack(False) - - rpttimer = threading.Timer(static.ARQ_RX_RPT_TIMEOUT_SECONDS, helpers.arq_rpt_timeout) - rpttimer.start() - - while static.ARQ_ACK_RECEIVED == False and static.ARQ_FRAME_ACK_RECEIVED == False and static.ARQ_RX_RPT_TIMEOUT == False: - time.sleep(0.01) # lets reduce CPU load a little bit - print(static.ARQ_STATE) - - if static.ARQ_ACK_RECEIVED == True: - - logging.info("ARQ | RX | ACK RECEIVED AFTER FRAME REPEAT") - - helpers.arq_reset_ack(True) - static.ARQ_RPT_FRAMES = [] - - if static.ARQ_RX_RPT_TIMEOUT == True and static.ARQ_ACK_RECEIVED == False: - print("Burst lost....") - - helpers.arq_reset_ack(False) - static.ARQ_RPT_FRAMES = [] - - #-------------------------------------------------------------------------------------------------------------- - - elif static.ARQ_ACK_RECEIVED == 0 and static.ARQ_RX_ACK_TIMEOUT == 1: - logging.info("ARQ | RX | ACK TIMEOUT - AND NO ACK!") - pass #no break here so we can continue with the next try of repeating the burst - - #--------------- BREAK LOOP IF ACK HAS BEEN RECEIVED - elif static.ARQ_ACK_RECEIVED == True: - logging.info("ARQ | RX | ACK RECEIVED") - #-----------IF ACK RECEIVED, INCREMENT ITERATOR FOR MAIN LOOP TO PROCEED WITH NEXT FRAMES/BURST - static.ARQ_N_SENT_FRAMES = static.ARQ_N_SENT_FRAMES + static.ARQ_TX_N_FRAMES_PER_BURST - break - - #--------------- BREAK LOOP IF FRAME ACK HAS BEEN RECEIVED EARLIER AS EXPECTED - elif static.ARQ_FRAME_ACK_RECEIVED == True: - print("----------------------------------------------------------") - logging.info("ARQ | RX | EARLY FRAME ACK RECEIVED - STOPPING TX") - #static.ARQ_N_SENT_FRAMES = #static.TX_BUFFER_SIZE - static.ARQ_N_SENT_FRAMES = static.ARQ_N_SENT_FRAMES + static.ARQ_TX_N_FRAMES_PER_BURST - break - - else: - print("------------------------------->NO RULE MATCHED!") - break - - - #--------------------------------WAITING AREA FOR FRAME ACKs - - print("static.ARQ_N_SENT_FRAMES " + str(static.ARQ_N_SENT_FRAMES)) - print("static.TX_BUFFER_SIZE " + str(static.TX_BUFFER_SIZE)) - print("static.TX_N_RETRIES " + str(static.TX_N_RETRIES)) - print("static.TX_N_MAX_RETRIES " + str(static.TX_N_MAX_RETRIES)) - - print("static.ARQ_STATE " + str(static.ARQ_STATE)) - print("static.ARQ_FRAME_ACK_RECEIVED " + str(static.ARQ_FRAME_ACK_RECEIVED)) - print("static.ARQ_RX_FRAME_TIMEOUT " + str(static.ARQ_RX_FRAME_TIMEOUT)) - print("static.ARQ_ACK_RECEIVED " + str(static.ARQ_ACK_RECEIVED)) - print("static.ARQ_RX_ACK_TIMEOUT " + str(static.ARQ_RX_ACK_TIMEOUT)) - print("static.ARQ_RPT_RECEIVED " + str(static.ARQ_RPT_RECEIVED)) - - - frametimer = threading.Timer(static.ARQ_RX_FRAME_TIMEOUT_SECONDS, helpers.arq_frame_timeout) - frametimer.start() - static.ARQ_STATE = 'RECEIVING_SIGNALLING' - - # wait for frame ACK if we processed the last frame/burst - while static.ARQ_FRAME_ACK_RECEIVED == False and static.ARQ_RX_FRAME_TIMEOUT == False and static.ARQ_N_SENT_FRAMES == static.TX_BUFFER_SIZE: - time.sleep(0.01) # lets reduce CPU load a little bit - #print(static.ARQ_STATE) - print("WAITING FOR FRAME ACK") - - - - # ----------- if no ACK received and out of retries.....stop frame sending - if static.ARQ_ACK_RECEIVED == False and static.ARQ_FRAME_ACK_RECEIVED == False and static.ARQ_RX_ACK_TIMEOUT == True: - logging.info("ARQ | TX | NO BURST OR FRAME ACK RECEIVED | DATA SHOULD BE RESEND!") - break - - #-------------------------BREAK TX BUFFER LOOP IF ALL PACKETS HAVE BEEN SENT AND WE GOT A FRAME ACK - elif static.ARQ_N_SENT_FRAMES == static.TX_BUFFER_SIZE and static.ARQ_FRAME_ACK_RECEIVED == True: - logging.info("ARQ | RX | REGULAR FRAME ACK RECEIVED - DATA TRANSMITTED!") - break - - else: - print("NO MATCHING RULE AT THE END") - - - # IF TX BUFFER IS EMPTY / ALL FRAMES HAVE BEEN SENT --> HERE WE COULD ADD AN static.VAR for IDLE STATE - - logging.info("ARQ | TX | BUFFER EMPTY") - helpers.arq_reset_frame_machine() - - - - - - -# BURST MACHINE TO DEFINE N BURSTS PER FRAME ---> LATER WE CAN USE CHANNEL MESSUREMENT TO SET FRAMES PER BURST -def get_n_frames_per_burst(): - - #n_frames_per_burst = randrange(1,10) - n_frames_per_burst = 4 - return n_frames_per_burst - - - -def burst_ack_received(): - - logging.info("ARQ | RX | BURST ACK RCVD!") - #static.ARQ_RX_ACK_TIMEOUT = True #Force timer to stop waiting - static.ARQ_ACK_RECEIVED = True #Force data loops of TNC to stop and continue with next frame - - #static.ARQ_RX_RPT_TIMEOUT = True #Force timer to stop waiting - #static.ARQ_RPT_RECEIVED = False - #static.ARQ_RPT_FRAMES = [] - - -def frame_ack_received(): - - logging.info("ARQ | RX | FRAME ACK RCVD!") - #static.ARQ_RX_ACK_TIMEOUT = True #Force timer to stop waiting - static.ARQ_FRAME_ACK_RECEIVED = True #Force data loops of TNC to stop and continue with next frame - - #static.ARQ_RX_RPT_TIMEOUT = True #Force timer to stop waiting - #static.ARQ_RPT_RECEIVED = False - #static.ARQ_RPT_FRAMES = [] - - -def burst_rpt_received(data_in): - - logging.info("ARQ | RX | BURST RPT RCVD!") - #static.ARQ_RX_ACK_TIMEOUT = False #Force timer to stop waiting - #static.ARQ_ACK_RECEIVED = False #Force data loops of TNC to stop and continue with next frame - - #static.ARQ_RX_RPT_TIMEOUT = True - static.ARQ_RPT_RECEIVED = True - static.ARQ_RPT_FRAMES = [] - - missing_area = bytes(data_in[1:9]) - - for i in range(0,6,2): - if not missing_area[i:i+2].endswith(b'\x00\x00'): - missing = missing_area[i:i+2] - static.ARQ_RPT_FRAMES.insert(0,missing) -