adc_sample_channel
battery = adc_sample_channel(ADC_CHANNEL_BATTERY);
*rawyp = adc_sample_channel(ADC_CHANNEL_TP_Y);
*rawxp = adc_sample_channel(ADC_CHANNEL_TP_X);
battery = adc_sample_channel(ADC_CHANNEL_BATTERY);
*rawxp = adc_sample_channel(ADC_CHANNEL_TP_X);
*rawyp = adc_sample_channel(ADC_CHANNEL_TP_Y);
extern int adc_sample_channel(int);