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+--- Thread: GPIO app and pin behavior (/showthread.php?tid=3148)
GPIO app and pin behavior - Techstyle - 2020-12-15
has anything changed recently with regard to the GPIO app that would affect GPIO pin behavior?
I used to use 2 GPIO pins to shutdown and signal shutdown is complete and now these pins don't work the same
in /boot/config.txt I have:
Code:
dtoverlay=gpio-shutdown,gpio_pin=21
dtoverlay=gpio-poweroff,gpiopin=20,active_low="y"but pin 38 (GPIO 20) appears low (~0.6V) when it used to be high (3.3V)
and pin 40 (GPIO 21) is high (3.3V) and when grounded through a 1.1k ohm resistor (measured) it only drops to about 2.8V and does not trip the pi to shut down. has something changed the behavior of these pins recently?
RE: GPIO app and pin behavior - Sailoog - 2020-12-16
anything changed in gpio app, that should keep working...