Hi,
I want to toggle GPIO EXP_GPIO0_38 of user exp header of SK-AM62 board, through command line and used pre built image
Step followed
root@am62xx-evm:~# gpiodetect
gpiochip0 [4201000.gpio] (24 lines)
gpiochip1 [600000.gpio] (87 lines)
gpiochip2 [601000.gpio] (88 lines)
gpiochip3 [1-0022] (24 lines)
root@am62xx-evm:~# gpioinfo gpiochip1 | grep "38"
line 38: unnamed unused input active-high
root@am62xx-evm:~# cd /sys/class/gpio/
root@am62xx-evm:/sys/class/gpio# ls
export gpiochip289 gpiochip313 gpiochip401 gpiochip488 unexport
root@am62xx-evm:/sys/class/gpio# cat gpiochip401/label
600000.gpio
I need to toggle 38 pin
root@am62xx-evm:/sys/class/gpio#
root@am62xx-evm:/sys/class/gpio# echo 439 > export
root@am62xx-evm:/sys/class/gpio# echo "out" > gpio439/direction
root@am62xx-evm:/sys/class/gpio# cat gpio439/direction
out
root@am62xx-evm:/sys/class/gpio# gpioinfo gpiochip1 | grep "38"
line 38: unnamed "sysfs" output active-high [used]
root@am62xx-evm:/sys/class/gpio# cat gpio439/value
0
root@am62xx-evm:/sys/class/gpio# echo 1 > gpio439/value
root@am62xx-evm:/sys/class/gpio# cat gpio439/value
0
root@am62xx-evm:/sys/class/gpio#
value are not changing and on gpio line, getting always 0.64v
is I need to do any thing else?
please give suggestion
Thanks,
Gireesh Hiremath
