Adding ADC function to an existing product that uses CC2541. Having a tough go getting the ADC going on P0_7
Confirmed that the output of a differential opamp is putting just over 2 VDC on P0_7 (pin 12)
Have tried to distill down to the simplest form but haven't gotten it running yet.
Probably missing something. Have played with it for a while and read as much as I could find here.
Any assistance appreciated.
This code runs very early on boot up:
P0DIR = 0x00;
P1DIR = 0x00;
P2DIR = 0x00;
P0INP = 0x00;
P1INP = 0x00;
P2INP = 0x00;
P0SEL = 0x80; // P0_7 is A/D
P1SEL = 0x00;
P2SEL = 0x00;
APCFG = 0x80;
HalAdcInit();
HalAdcSetReference(HAL_ADC_REF_AVDD);
uint16 reading = HalAdcRead(HAL_ADC_CHANNEL_7, HAL_ADC_RESOLUTION_12);
printf("Reading = %d \r\n", reading);
