4. Initiating connection to AWS

Initiating connection to AWS

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    Dear People
    I am currently working on a System that needs to connect to AWS. Sadly i get the following Error messages when I Execute my code: 0_1679405029035_Support.PNG

    I am using an ATOM Lite and UIFlow 1.11.3

    I hope you guys can help me

    With kind regards,
    TD

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  • B

    Line 51 in my code is just aws.start() and it seems to call functions in the libraries. Maybe there is a bug in IoTCloud/AWS.py?

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  • Please post all the python code.
    errors don't always apply to a specific line and also don't count empty lines.
    IIRC (and there's a possibility I don't as it was last year) have you set up the digital twin and permissions on AWS for the code to connect?

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  • B

    Thank you for your reply!

    Here is my Pythoncode:

    from m5stack import *
    from m5ui import *
    from uiflow import *
    import machine
    import wifiCfg
    from IoTcloud.AWS import AWS
    import ntptime
    import json
    PingCounter = None
    ThingsName = None
    currentDoorState = None
    lastDoorState = None
    from numbers import Number

    @timerSch.event('AWSTimer')
    def tAWSTimer():
    global PingCounter, ThingsName, currentDoorState, lastDoorState, pin1
    if wifiCfg.wlan_sta.isconnected():
    PingCounter = (PingCounter if isinstance(PingCounter, Number) else 0) + 1
    aws.publish(str('DoorState/ping'),str((json.dumps(({'time':(ntp.formatDatetime('-', ':')),'ping':PingCounter,'reconnect':False})))))
    else:
    wifiCfg.doConnect('BesserMITTAG-IOT', "Zsip-uwYpDe'")
    PingCounter = (PingCounter if isinstance(PingCounter, Number) else 0) + 1
    aws.publish(str('DoorState/ping'),str((json.dumps(({'ping':PingCounter,'time':(ntp.formatDatetime('-', ':')),'reconnect':True})))))
    pass

    @timerSch.event('restartTimer')
    def trestartTimer():
    global PingCounter, ThingsName, currentDoorState, lastDoorState, pin1
    machine.reset()
    pass

    import gc
    wifiCfg.doConnect('blank', "blank'")
    ntp = ntptime.client(host='de.pool.ntp.org', timezone=1)
    timerSch.run('restartTimer', 10800000, 0x00)
    PingCounter = 0
    ThingsName = 'D30002'
    aws = AWS(things_name=ThingsName, host='hostName', port=8883, keepalive=1000, cert_file_path="/flash/res/certificate.pem.crt", private_key_path="/flash/res/private.pem.key")
    aws.start()
    gc.collect()
    aws.publish(str('DoorState/connect'),str((json.dumps(({'connect':'request'})))))
    timerSch.run('AWSTimer', 900000, 0x00)
    pin1 = machine.Pin(26, mode=machine.Pin.IN, pull=machine.Pin.PULL_UP)
    currentDoorState = pin1.value()
    while True:
    lastDoorState = currentDoorState
    currentDoorState = pin1.value()
    if lastDoorState == 1 and currentDoorState == 0:
    rgb.setColorAll(0x33cc00)
    aws.publish(str('DoorState/test'),str((json.dumps(({'open':(ntp.formatDatetime('-', ':')),'Message':'15','TopicArn':'arn:aws:sns:eu-central-1:684143602652:L-from-device','MessageAttributes':({'DataType':'String','StringValue':'door-opened'}),'DeviceID':({'DataType':'String','StringValue':'A1005'})})))))
    elif lastDoorState == 0 and currentDoorState == 1:
    rgb.setColorAll(0xff0000)
    aws.publish(str('DoorState/test'),str((json.dumps(({'close':(ntp.formatDatetime('-', ':')),'Message':'16','TopicArn':'arn:aws:sns:eu-central-1:684143602652:L-from-device','MessageAttributes':({'DataType':'String','StringValue':'door-closed'}),'DeviceID':({'DataType':'String','StringValue':'A1005'})})))))
    wait_ms(2)

    I have set everything up in AWS, the connection was already established and worked fine.
    Do you mean a device shadow with digital twin? I dont see how that could resolve the issue.

    With kind regards,
    TD

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  • If I read correctly it means that the MQTT connection to AWS wasn't acknowledge which meant permission was refused.
    Have you restarted the ATOM or has AWS changed anything?
    Sorry, I haven't used AWS in a while

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  • B

    I tried restarting it, that didnt change anything.

    @ajb2k3 said in Initiating connection to AWS:

    If I read correctly it means that the MQTT connection to AWS wasn't acknowledge which meant permission was refused.
    Have you restarted the ATOM or has AWS changed anything?
    Sorry, I haven't used AWS in a while

    Were did you read that the connection wasnt established?

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  • Combination of error 09 (authentication acknowledgment error) and OS error shown in the command terminal

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