charge_controller_target_mspm0L1304/src/peripherals/adc.c

#include "adc.h"

#include "ti/driverlib/dl_adc12.h"
#include "ti_msp_dl_config.h"
#include "src/battery_data/battery.h"

// A0 PA27
// A1 PA26
// A2 PA25
// A3 PA24
// A4 PA16
const uint8_t measurement_channels[4] = {
    DL_ADC12_INPUT_CHAN_0,
    DL_ADC12_INPUT_CHAN_1,
    DL_ADC12_INPUT_CHAN_2,
    DL_ADC12_INPUT_CHAN_3
};

uint8_t ch=0;

uint16_t measurement_results[4] = {
    0,
    0,
    0,
    0
};

void ADC12_0_INST_IRQHandler(void)
{
    uint32_t irqval = DL_ADC12_getPendingInterrupt(ADC12_0_INST);
    printf("irqval: %d", irqval);
    switch (irqval) {
        case DL_ADC12_IIDX_MEM0_RESULT_LOADED:
            measurement_results[ch] = DL_ADC12_getMemResult(ADC12_0_INST, DL_ADC12_MEM_IDX_0)*3300/4096;
            if (ch == 1) {
                slot.measurement.voltage = (measurement_results[1]-measurement_results[0])*(56+100)/56;
            }
            if (++ch == 4) {
                ch = 0;
            }
            DL_ADC12_stopConversion(ADC12_0_INST);
            DL_ADC12_configConversionMem(ADC12_0_INST, 
                                         ADC12_0_ADCMEM_0,
                                         measurement_channels[ch], 
                                         DL_ADC12_REFERENCE_VOLTAGE_VDDA, 
                                         DL_ADC12_SAMPLE_TIMER_SOURCE_SCOMP0, 
                                         DL_ADC12_AVERAGING_MODE_ENABLED,
                                         DL_ADC12_BURN_OUT_SOURCE_DISABLED, 
                                         DL_ADC12_TRIGGER_MODE_AUTO_NEXT, 
                                         DL_ADC12_WINDOWS_COMP_MODE_DISABLED);
            DL_ADC12_enableConversions(ADC12_0_INST);
            DL_ADC12_startConversion(ADC12_0_INST);
            break;
        default:
            break;
    }
}