Hello,
I bought a OLED screen to use it with the Radxa Zero.
Did all the steps on their Wiki page.
https://www.waveshare.com/wiki/2.23inch_OLED_HAT?Amazon
Also installed wiringpi “sudo apt-get Install wiringpi”.
But when I want to compile the C program the compiler output says “#include <wiringPi.h> Not found”.
Is there something Missing?