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hi 
i have an "Orange-pi pc" 
i have installed official android os on it 
but my problem is that i can not work with wiringOp and i can not use spi,i2c,.... 
another problem is that my touchscreen ( 7inch waveshare display) not working ( screen works but touch does not) 
i try to compile "wiringOp" with ndk and use it on android but i can not success 
i have searched many times to find a guid for using gpio on Android 
but i can not find any understandable tutorial 
i just find this linksome times ago but i can not understand 
should i compile wiringOP as loadable kernel module? 
should i try to compile it with ndk again? 
should i put it anywere in aosp android source code and compile my custom rom? 
how should i resolve this hardware/driver issus on android os? 
 
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