Hello.
I want to use Uart in GPIO with Tinker Board S R2.
But, below url, there are information aboutTinker Board 2 Series.
https://github.com/TinkerBoard/TinkerBoard/wiki/Developer-Guide#mraa-library-for-android
In Tinker Board S R2, Where is 'config.txt' ?
I make it in /dtoverlay/config.txt, but i think it doesn't working.
How to use GPIO port in Tinker Board S R2?
How can I use 'config.txt' file?
Thanks.