Is there a sample app using gpio pin?

[jyijyi]

You can use sysfs command to control gpio

Controlling WP_GPIO_1 / GPIO22 problem

Hello I try to control gpio22 (WP_GPIO_2 on the mangoh Red, pin13 on PI header) but I get a warning when starting the app: -WRN- | gpioService[789]/sysfsGpio T=main | gpioSysfsUtils.c gpioSysfs_SessionOpenHandlerFunc() 1112 | Unable to export GPIO gpio22 for use - stopping session Changing to gpio21 and the app works fine. Any tips to get gpio22 working? [image]