i2c

[christianbirdnyc]

Hi fourstix!

Hope this is the correct place to post this question/issue...

First, thanks for sharing this library! I have been using it to build a simple connected garden - lights, water and monitoring.
I have experienced a problem, whereby after some time the Relay 'locks' to the 'on', and requires a full power-down of the Raspberry Pi I'm using. Thank you for reviewing this comment, and for the time and effort you have shared freely.

I first posted this issue over at the Spark Fun forum,
https://forum.sparkfun.com/viewtopic.php?f=105&t=53752

Posting here under the guidance of Sparkfun technical support, Brandon Williams, who suspects this may be a software issue.

In a nutshell, everything works as expected, to start, I can read the Firmware number, connection status, and I can turn on/off repeating every few minutes. After a while (most recently, after a hour) all i2c busses look filled, the blue status light persists, and the device (Rasp Pi) will not function until a complete power down (not 'just' a reboot). Attached is a i2cdetect showing normal operation, and then, 'stuck'.

My code (all dependencies are installed, and tested working):

#!/usr/bin/python3.7

import time
import board
import busio
import sparkfun_qwiicrelay
import atexit

loop = 100
delay = 240

i2c = busio.I2C(board.SCL, board.SDA)
relay = sparkfun_qwiicrelay.Sparkfun_QwiicRelay(i2c)


def exitclean():
    relay.relay_off()


def main():
    atexit.register(exitclean)

    if relay.connected:
        print('Relay connected')
    else:
        print('Relay does not appear to be connected')
        exit()

    print('Firmware version ' + relay.version)

    for _ in range(loop - 1):

        print('{} of {}'.format(_ + 1, loop))

        relay.relay_on()

        if relay.status != 0:
            relaystate = 'On'
        else:
            relaystate = 'Off'

        print('The relay status is {}, holding {} seconds'.format(
            relaystate, delay))

        time.sleep(delay)

        relay.relay_off()

        if relay.status != 0:
            relaystate = 'On'
        else:
            relaystate = 'Off'

        print('The relay status is {}, holding {} seconds'.format(
            relaystate, delay))

        time.sleep(delay)

    print('Finished')


if __name__ == '__main__':
    main()

I hope this may help others, or, may be a simple fix which I can share with others on the SparkFun forum.

Christian

[christianbirdnyc]

Apologies. I have since determined this was a separate software issue, stemming from a process running on the Raspberry Pi corrupting the i2c bus