| 
 | 
 
Hi, 
 
1- i'm looking for a wiring library, which supports the internal pull-up/down resistory for input for Orange Pi 3 LTS on Ubuntu Linux. 
2- is there any GPIO pin on Orange Pi 3 LTS supporting PWM, for generating tone with a piezo buzzer? 
 
i've tried https://github.com/orangepi-xunlong/wiringOP , which is referenced in the manual, but that doesn't work for above things. Output LEDs can be controlled. 
 
regards, 
Hayati 
 
 |   
 
 
 
 |