Channel remains in use

[anpap]

After using a python module with OPi GPIO (in this case risingfalling.py) and when the program is terminated using Ctrl-C, I get the following error when I try to run it again:

user@pizero2:~/example$ sudo python risingfalling.py
Traceback (most recent call last):
File "risingfalling.py", line 14, in
GPIO.setup(23, GPIO.IN) # set GPIO25 as input (button)
ValueError: This channel is already in use by system as SEE_MANUAL.

[alex-morgun]

if you don't do GPIO.cleanup() you don't free the pin and you will get wrnings
Use this example, it is ctrl+c friendly

https://github.com/Jeremie-C/OrangePi.GPIO/blob/master/example/blink_led.py