This is the server code for the Waveshare High-Precision AD/DA Board using Wiring Pi instead of the bcm2835 library. Use it with the android_ads1256 app to display the adc values.
make sudo ./ads1256_dac8552
credits go to https://github.com/jurebartol/Rpi2_ads1256 and https://github.com/csmiler/ADS1256/blob/single-channel/ADS1256.py