gpio_open_sysfs(): Opening GPIO: writing 'export': Invalid argument [errno 22]

Question

gpio_open_sysfs(): Opening GPIO: writing 'export': Invalid argument [errno 22]

Closed this issue 3 years ago · 1 comments

Hello, I'm using deabian system with linux kernel version 4.4, I tried to open gpio by calling the gpio_open_sysfs() API, but returned "Invalid argument", did I called the wrong API? I'm sure the pin sysfs number is correct.

Answer 1 · 2021-05-07T03:28:58.000Z

I think I have solved my problem, I used the wrong ping number