Which Khadas SBC do you use?
VIM3
Which system do you use? Android, Ubuntu, OOWOW or others?
debian
Which version of system do you use? Khadas official images, self built images, or others?
| Distributor ID: | Debian |
|---|---|
| Description: | Armbian 23.11.1 bookworm |
| Release: | 12 |
| Codename: | bookworm |
| Linux 6.1.63-current-meson64 aarch64 |
Please describe your issue below:
i try to control GPIO with commands:
echo 431 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio431/direction
echo 1 > /sys/class/gpio/gpio431/value
i see that GPIO changes state at least on software side. But not on hardware side. Is it not configured? How to configure and enable it? Maybe /boot/armbianEnv.txt needs to be edited? Have no idea what and how after extensive googling 
Post a console log of your issue below:
root@baffless:~# echo 1 > /sys/class/gpio/gpio431/value
root@baffless:~# cat /sys/kernel/debug/gpio
gpiochip2: GPIOs 404-411, parent: i2c/0-0020, 0-0020, can sleep:
gpio-409 ( |red:status ) out lo
gpiochip1: GPIOs 412-426, parent: platform/ff800000.sys-ctrl:pinctrl@14, aobus-banks:
gpio-416 ( |white:status ) out lo
gpio-419 ( |power ) in hi ACTIVE LOW
gpiochip0: GPIOs 427-511, parent: platform/ff634400.bus:pinctrl@40, periphs-banks:
gpio-431 ( |sysfs ) out hi
gpio-433 ( |sysfs ) out hi
gpio-434 ( |sysfs ) out hi
gpio-451 ( |regulator-vcc_5v ) out hi
gpio-464 ( |reset ) out hi ACTIVE LOW
gpio-474 ( |cd ) in hi ACTIVE LOW
gpio-482 ( |regulator-usb_pwr ) out hi
gpio-498 ( |reset ) out hi ACTIVE LOW
gpio-509 ( |shutdown ) out hi
root@baffless:~# echo 0 > /sys/class/gpio/gpio431/value
root@baffless:~# cat /sys/kernel/debug/gpio
gpiochip2: GPIOs 404-411, parent: i2c/0-0020, 0-0020, can sleep:
gpio-409 ( |red:status ) out lo
gpiochip1: GPIOs 412-426, parent: platform/ff800000.sys-ctrl:pinctrl@14, aobus-banks:
gpio-416 ( |white:status ) out hi
gpio-419 ( |power ) in hi ACTIVE LOW
gpiochip0: GPIOs 427-511, parent: platform/ff634400.bus:pinctrl@40, periphs-banks:
gpio-431 ( |sysfs ) out lo
gpio-433 ( |sysfs ) out hi
gpio-434 ( |sysfs ) out hi
gpio-451 ( |regulator-vcc_5v ) out hi
gpio-464 ( |reset ) out hi ACTIVE LOW
gpio-474 ( |cd ) in hi ACTIVE LOW
gpio-482 ( |regulator-usb_pwr ) out hi
gpio-498 ( |reset ) out hi ACTIVE LOW
gpio-509 ( |shutdown ) out hi
root@baffless:~# cat /boot/armbianEnv.txt
verbosity=1
console=both
overlay_prefix=meson
fdtfile=amlogic/meson-g12b-a311d-khadas-vim3.dtb
rootdev=UUID=5e84494c-edca-4159-bd14-41b8cc62f078
rootfstype=ext4
usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u
root@baffless:~#