Configure DAQC2plate as usual
Flow should start getting ADC readings

In a shell to the Pi, create the wigglepin.py script as:


import piplates.DAQC2plate as DAQC2
import RPi.GPIO as GPIO
import time

try:
        while 1:
#               print("on")
                DAQC2.setDOUTbit(0,5)
                time.sleep(.9)
#               print("off")
                DAQC2.clrDOUTbit(0,5)
                time.sleep(.1)

except KeyboardInterrupt:
        DAQC2.clrDOUTbit(0,5)
        GPIO.cleanup()




run it with:

  python3 wigglepin.py

  Digital Output 5 should be toggling, however
  the Node-Red Flow is now hung.

  Restart Flows  - Nope.  DAC nodes now indicate
  "invalid plate"
  
  Restart Pi to recover.

  Sometimes wigglepin will abend with this callstack:

  Traceback (most recent call last):
  File "wigglepin.py", line 1, in <module>
    import piplates.DAQC2plate as DAQC2
  File "/usr/local/lib/python3.7/dist-packages/piplates/DAQC2plate.py", line 748, in <module>
    quietPoll()
  File "/usr/local/lib/python3.7/dist-packages/piplates/DAQC2plate.py", line 713, in quietPoll
    getCalVals(i)
  File "/usr/local/lib/python3.7/dist-packages/piplates/DAQC2plate.py", line 727, in getCalVals
    values[j]=CalGetByte(addr,6*i+j)
  File "/usr/local/lib/python3.7/dist-packages/piplates/DAQC2plate.py", line 586, in CalGetByte
    return resp[0]
IndexError: list index out of range