how to send confirmed data pycom?



  • @administrators
    @Pycom-Channel-Partners

    how to send confirmed data pycom?

    my code is

    s.setsockopt(socket.SOL_LORA, socket.SO_DR, 3)
    s.setblocking(True)
    s.setblocking(False) # false로 되어있어야 recv가 가능
    time.sleep(5.0)

    for i in range (200):
    send = s.send(bytes([0x01, 0x02, 0x03]))
    print('send_data: ', bytes([0x01, 0x02, 0x03]))
    time.sleep(4)
    rx = s.recv(64)
    if rx:
    print('recv_data: ',rx)
    time.sleep(6)

    but this code is non-confirmed_data...



  • @john

    You need to register a LoRa callback to work with the acknowledgements, i.e.:

    lora.callback(LoRa.TX_FAILED_EVENT, handler=YourHandlerFunction, arg=None)

    "If the ack is not received LoRa.TX_FAILED_EVENT will be raised after the number of tx_retries configured have been performed."



  • thank you!

    I succeeded in sending confirmed data.
    but, i don't know ack packet printing.
    Do you know printing ack packet as lopy ??
    this is my code


    join process
    .
    .
    .
    s = socket.socket(socket.AF_LORA, socket.SOCK_RAW)
    s.setsockopt(socket.SOL_LORA, socket.SO_CONFIRMED, True)
    print('Sending...')
    s.send("send pk #%d" %4)
    time.sleep(40)
    print(s.recv(12))

    but this code no output ..



  • @john as described in the docs:

    # selecting confirmed type of messages
    s.setsockopt(socket.SOL_LORA, socket.SO_CONFIRMED, True)
    

    Note that due to the bands limitations, there are often strict limits on how much confirmed packets you are allowed to send.


 

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