On Monday, August 31, 2015 at 1:42:16 PM UTC-4, John McKenzie wrote:
> Dennis, Hakugin, I tried your scripts and had to alter a typo here or
> there, but once the basic errors disappeared I had the same error
> message. "Conflicting edge detection already enabled for this GPIO
> channel".
>
> As much as I despise web based bulletin board systems I registered on
> the Raspberry Pi website to ask for help as well.
>
> Appreciate the effort you both put in those scripts. Will keep working
> with them and the general points you made.
>
> Still checking here and am discussing all this in the Raspberry pi
> newsgroup. Thanks to the several people who mentioned it.
>
> Again, still listening here if anyone has any more to add.
I apologize, I did make a mistake with the example I provided and I just
realized it. Change the code block:
while True:
GPIO.add_event_detect(22, GPIO.RISING, callback=red_button, bouncetime=200)
GPIO.add_event_detect(23, GPIO.RISING, callback=yellow_button,
bouncetime=200)
GPIO.add_event_detect(24, GPIO.RISING, callback=blue_button,
bouncetime=200)
if colour == 1:
time_red += 1
elif colour == 2:
time_yellow += 1
elif colour == 3:
time_blue += 1
to:
GPIO.add_event_detect(22, GPIO.RISING, callback=red_button, bouncetime=200)
GPIO.add_event_detect(23, GPIO.RISING, callback=yellow_button, bouncetime=200)
GPIO.add_event_detect(24, GPIO.RISING, callback=blue_button, bouncetime=200)
while True:
if colour == 1:
time_red += 1
elif colour == 2:
time_yellow += 1
elif colour == 3:
time_blue += 1
You are getting the error because the script is attempting to perform a
"add_event_detect" on the same pins each time the "while" loop iterates. By
moving it above the loop the error should stop occuring.
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