PiTFT Disable Tactile Switch as Power Button

[aramael]

I have a Adafruit PiTFT - 2.8" Capacitive Touchscreen Display for Raspberry Pi and it's currently using the tactile switch attached GPIO Pin #23 to initate the shutdown process for the Pi. I tried to remove this "feature" by removing the line:

Code: Select all

options rpi_power_switch gpio_pin=23 mode=0

from /etc/modprobe.d/adafruit.conf, however upon testing it now seems that the process is attached to GPIO Pin # 22. How do I go about disabling the tactile switch as power button. I'm currently running the Adafruit Jessie Lite-based PiTFT 2.4", 2.8" and 3.2" Resistive Image for Pi 1, 2, 3, Zero (Sept 23, 2016).

[adafruit2]

remove the line in /etc/modules

https://learn.adafruit.com/adafruit-pit ... wer-button

[pjkelnhofer]

I know this is an old post, but I am hoping I can get an answer. The portion on the "Extras!" about setting up GPIO 23 as a power button seems to have disappeared. I know it was there when I first bought my TFT.

[adafruit2]

yep we had to remove that section because we could no longer maintain a separate kernel fork with the rapid updates to raspbian.

try https://www.raspberrypi.org/magpi/off-s ... pberry-pi/ ?

[pjkelnhofer]

I didn't realize those were no longer supported... I still have the image saved from when I first bought my PiTFT.
I was trying to figure out how to turn off GPIO #23 being a power switch by default which was on the (now unsupported) Easy Install Image that I used )Raspbian Jessie 2016-09-23-based image). Because my script using GPIO #23 for something else.

If anyone else is looking for it:

Code: Select all

sudo nano /etc/modules

and delete the line: rpi_power_switch

Also, for good measure:

Code: Select all

sudo nano /etc/modprobe.d/adafruit.conf

and delete the line: options rpi_power_switch gpio_pin=23 mode=0