RE: sama5d3 xplained violet - Using GPIO through bash

sjcchuma — Thu, 30 Oct 2014 17:58:26 GMT

Hi, not sure if this good place to ask but i am trying to gain access to BP3 (PB_USER) button. I came up with GPIO number 61 (PE29), is this correct? After configuration below, I got pioB29 and press button didn't change value. Could you help?

root@SAMA5D3-Xplained:/sys/class/gpio# echo 61 > export

root@SAMA5D3-Xplained:/sys/class/gpio# ls

export gpiochip128 gpiochip64 pioB29
gpiochip0 gpiochip32 gpiochip96 unexport

root@SAMA5D3-Xplained:/sys/class/gpio# cd pioB29

root@SAMA5D3-Xplained:/sys/class/gpio/pioB29# ls

active_low device direction edge power subsystem uevent value

root@SAMA5D3-Xplained:/sys/class/gpio/pioB29# echo out > direction

root@SAMA5D3-Xplained:/sys/class/gpio/pioB29# echo 1 > value

root@SAMA5D3-Xplained:/sys/class/gpio/pioB29# cat value

root@SAMA5D3-Xplained:/sys/class/gpio/pioB29# uname -a

Linux SAMA5D3-Xplained 3.16.5-sama5-armv7-r8 #1 Mon Oct 27 11:01:55 PDT 2014 armv7l GNU/Linux