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https://github.com/DJ2LS/FreeDATA
synced 2024-05-14 08:04:33 +00:00
changed main loop
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parent
0645e436ff
commit
1ebaa14457
2 changed files with 66 additions and 20 deletions
75
arq.py
75
arq.py
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@ -17,6 +17,8 @@ import static
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import modem
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import other
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from random import randrange
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modem = modem.RF()
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@ -199,13 +201,30 @@ def transmit(data_out):
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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)] # split incomming bytes to size of 30bytes - arq payload
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static.TX_BUFFER_SIZE = len(static.TX_BUFFER)
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static.ARQ_TX_N_FRAMES = n_frames_per_burst(len(data_out)) # DEFINE NUMBER OF FRAMES PER BURSTS
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######static.ARQ_TX_N_FRAMES = get_n_frames_per_burst(len(data_out)) # DEFINE NUMBER OF FRAMES PER BURSTS
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logging.info("TX | TOTAL PAYLOAD BYTES/FRAMES TO SEND: " + str(len(data_out)) + " / " + str(static.TX_BUFFER_SIZE))
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#print(static.TX_BUFFER[2])
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for n_raw_frame in range(0, static.TX_BUFFER_SIZE, static.ARQ_TX_N_FRAMES): # LOOP THROUGH DATA LIST with steps = ARQ_TX_N_FRAMES
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static.ARQ_N_SENT_FRAMES = 0
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static.ACK_RECEIVED = 0
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while static.ARQ_N_SENT_FRAMES <= static.TX_BUFFER_SIZE:
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#for n_raw_frame in range(0, static.TX_BUFFER_SIZE, static.ARQ_TX_N_FRAMES): # LOOP THROUGH DATA LIST with steps = ARQ_TX_N_FRAMES
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#print("ARQ_N_SENT_FRAME = " + str(static.ARQ_N_SENT_FRAMES))
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################# DYNAMIC ARQ TEST AREA --> SET RANDOM ARQ TX N FRAMES
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static.ARQ_TX_N_FRAMES = randrange(5)
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#print(randrange(static.ARQ_TX_N_FRAMES))
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static.ACK_RECEIVED = 0
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#################################################################
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# ----------- GENERATE PAYLOAD CRC FOR ARQ_TX_N_FRAMES
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burst_total_payload = bytearray()
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@ -213,7 +232,7 @@ def transmit(data_out):
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#----------------------------------------------------------------------------------------------------------
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try: # DETECT IF LAST BURST
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for i in range(static.ARQ_TX_N_FRAMES): #bytearray(b'111111111111111111111111222222222222222222222222')
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#print("ARQ_N_SENT_FRAME = " + str(static.ARQ_N_SENT_FRAMES))
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# we need to make sure, payload data is always as long as static.ARQ_PAYLOAD_PER_FRAME beacuse of CRC!
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@ -221,7 +240,8 @@ def transmit(data_out):
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# n_raw_frame is tooo static and we can't change the bursts number afterwards.
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# maybe we need to change the main loop from FOR to WHILE to be more flexible
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# we need then a iterator variable inside the loop
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burst_raw_payload = static.TX_BUFFER[n_raw_frame + i]
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#####burst_raw_payload = static.TX_BUFFER[n_raw_frame + i]
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burst_raw_payload = static.TX_BUFFER[static.ARQ_N_SENT_FRAMES + i]
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burst_payload = bytearray(static.ARQ_PAYLOAD_PER_FRAME)
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burst_payload[:len(burst_raw_payload)] = burst_raw_payload # set buffersize to length of data which will be send
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burst_total_payload = burst_total_payload + burst_payload
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@ -229,32 +249,33 @@ def transmit(data_out):
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except IndexError: # IF LAST BURST DETECTED BUILD CRC WITH LESS FRAMES AND SET static.ARQ_TX_N_FRAMES TO VALUE OF REST!
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print("LAST BURST!!!")
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burst_total_payload = bytearray() # reset burst_total_payload because of possible input remaining of detecting loop one step above
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n_last_burst = (static.TX_BUFFER_SIZE % n_raw_frame)
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print(n_last_burst)
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#####n_last_burst = (static.TX_BUFFER_SIZE % n_raw_frame)
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n_last_burst = (static.TX_BUFFER_SIZE % static.ARQ_N_SENT_FRAMES)
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#print(n_last_burst)
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static.ARQ_TX_N_FRAMES = n_last_burst
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for i in range(n_last_burst): #bytearray(b'111111111111111111111111222222222222222222222222')
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burst_raw_payload = static.TX_BUFFER[n_raw_frame + i]
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#######burst_raw_payload = static.TX_BUFFER[n_raw_frame + i]
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burst_raw_payload = static.TX_BUFFER[static.ARQ_N_SENT_FRAMES + i]
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burst_payload = bytearray(static.ARQ_PAYLOAD_PER_FRAME)
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burst_payload[:len(burst_raw_payload)] = burst_raw_payload # set buffersize to length of data which will be send
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burst_total_payload = burst_total_payload + burst_payload
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#----------------------------------------------------------------------------------------------------------
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print(burst_total_payload)
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#print(burst_total_payload)
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burst_payload_crc = crc_algorithm(burst_total_payload)
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burst_payload_crc = burst_payload_crc.to_bytes(2, byteorder='big')
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print(burst_payload_crc)
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#print(burst_payload_crc)
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static.ARQ_ACK_WAITING_FOR_ID = burst_payload_crc #set the global variable so we know for which ACK we are waiting for
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#----------------------------------------------------------------------------------------------------------
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#-------------------- BUILD ARQBURSTS
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#------------------ BUILD ARQBURSTS---------------------------------------------
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arqburst = []
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for i in range(static.ARQ_TX_N_FRAMES):
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@ -263,7 +284,10 @@ def transmit(data_out):
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frame_type = 10 + static.ARQ_TX_N_FRAMES
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frame_type = bytes([frame_type])
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payload_data = bytes(static.TX_BUFFER[n_raw_frame + i])
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######payload_data = bytes(static.TX_BUFFER[n_raw_frame + i])
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payload_data = bytes(static.TX_BUFFER[static.ARQ_N_SENT_FRAMES + i])
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arqframe = frame_type + burst_payload_crc + payload_data
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@ -283,11 +307,12 @@ def transmit(data_out):
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# ----------------------- Loop through ARQ FRAMES BUFFER with N = Numbers of frames which will be send at once
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for n in range(static.ARQ_TX_N_FRAMES):
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logging.info("TX | SENDING BURST " + str(n+1) + " / " + str(static.ARQ_TX_N_FRAMES))
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logging.info("TX | SENDING BURST " + str(n+1) + " / " + str(static.ARQ_TX_N_FRAMES) + " [" + str(burst_payload_crc) + "]")
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modem.Transmit(arqburst[n])
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time.sleep(2)
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#modem.RF.Transmit(arqburst[n])
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print(arqburst[n])
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#print(arqburst[n])
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# --------------------------- START TIMER ---> IF TIMEOUT REACHED, ACK_TIMEOUT = 1
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static.ACK_TIMEOUT = 0
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@ -303,8 +328,16 @@ def transmit(data_out):
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logging.info("TX | ACK TIMEOUT - SENDING AGAIN")
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#--------------- BREAK LOOP IF ACK HAS BEEN RECEIVED
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######if static.ACK_RECEIVED == 1:
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if static.ACK_RECEIVED == 1:
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#static.TX_N_RETRIES = 3
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################### CHECK THIs
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static.ARQ_N_SENT_FRAMES = static.ARQ_N_SENT_FRAMES + static.ARQ_TX_N_FRAMES
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#static.ARQ_TX_N_FRAMES = randrange(5)
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#print(randrange(static.ARQ_TX_N_FRAMES))
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#static.ACK_RECEIVED = 0
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break
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# ----------- if no ACK received and out of retries.....stop frame sending
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@ -314,9 +347,16 @@ def transmit(data_out):
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#-------------------------BREAK TX BUFFER LOOP IF ALL PACKETS HAVE BEEN SENT
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if n_raw_frame == static.TX_BUFFER_SIZE:
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######if n_raw_frame == static.TX_BUFFER_SIZE:
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if static.ARQ_N_SENT_FRAMES == static.TX_BUFFER_SIZE:
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break
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# ------------ TIMER TO WAIT UNTIL NEXT PACKAGE WILL BE SEND TO PREVENT TIME ISSEUS
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time.sleep(5)
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@ -326,7 +366,9 @@ def transmit(data_out):
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# BURST MACHINE TO DEFINE N BURSTS PER FRAME
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def n_frames_per_burst(len_data):
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def get_n_frames_per_burst(len_data):
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# I THINK WE CAN REMOVE THIS
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if len_data <= static.ARQ_PAYLOAD_PER_FRAME:
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n_frames_per_burst = 1
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@ -334,4 +376,5 @@ def n_frames_per_burst(len_data):
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n_frames_per_burst = 2
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n_frames_per_burst = randrange(5)
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return n_frames_per_burst
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@ -51,6 +51,9 @@ ARQ_RX_FRAME_N_BURSTS = 0
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FRAME_CRC = b''
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ARQ_N_SENT_FRAMES = 0
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# ------- TX BUFFER
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