Maxim Integrated MAX31782 - Manual (Page 55)

MaximIntegrated 6-12
MAX31782 User’s Guide
Revision 0; 8/11
6.3ADCCodeExamples
6.3.1OneSequenceofFourTemperatureandVoltageConversions
ADCN_bit.IREFEN = 1; //enable the internal reference
ADCN_bit.ADCONT = 0; //run a single conversion sequence
ADST_bit.ADCFG = 1; //set ADDATA as ADCFG
ADST_bit.ADIDX = 0; //ADIDX = 0, set to ADCFG[0]
ADDATA = 0x08; //ADCFG[0]: Differential voltage CH0, 1.225V FS, Right Aligned
ADDATA = 0x41; //ADCFG[1]: Single ended voltage CH1, 5.5V FS, Right Aligned
ADDATA = 0x85; //ADCFG[2]: External temperature CH5, right aligned
ADDATA = 0x86; //ADCFG[3]: Internal temperature, CH6, right aligned
ADADDR_bit.ADSTART = 0; //start sequence with ADCFG[0]
ADADDR_bit.ADEND = 3; //end sequence with ADCFG[3]
ADST_bit.ADCONV = 1; //start the conversions
while(ADST_bit.ADCONV) //wait for conversions to complete
;
ADST_bit.ADCFG = 0; //set ADDATA to data buffer
ADST_bit.ADIDX = 0; //set ADDATA to data buffer[0]
ch0_volt = ADDATA; //read and store ch0 voltage to variable
ch1_volt = ADDATA; //read and store ch1 voltage to variable
ch5_temp = ADDATA; //read and store ch5 temperature to variable
int_temp = ADDATA; //read and store internal temperature to variable