MSPM0L1306: MSPM0L1306 : ADC channel Configuration

Hi Santhosh,

Unlike the MSPM0G, the MSPM0L has only 4 MEMRES registers.  This means you can assign 4 of the 16 channels at a time.  If you want to measure on all 16 channels you will need to reconfigure the channel assignments and MEMRES registers after each group of 4 channels are measured.

Now one way to work around this would be clone the ADC setup code created by Sysconfig and modify it for the channels you need.  Below I copied the lines that setup each MEMRES and channel so you can see.  It's not optimal but the only way to get this work.

DL_ADC12_configConversionMem(ADC12_0_INST, ADC12_0_ADCMEM_0,
        DL_ADC12_INPUT_CHAN_0, DL_ADC12_REFERENCE_VOLTAGE_VDDA, DL_ADC12_SAMPLE_TIMER_SOURCE_SCOMP0, DL_ADC12_AVERAGING_MODE_DISABLED,
        DL_ADC12_BURN_OUT_SOURCE_DISABLED, DL_ADC12_TRIGGER_MODE_AUTO_NEXT, DL_ADC12_WINDOWS_COMP_MODE_DISABLED);
    DL_ADC12_configConversionMem(ADC12_0_INST, ADC12_0_ADCMEM_1,
        DL_ADC12_INPUT_CHAN_3, DL_ADC12_REFERENCE_VOLTAGE_VDDA, DL_ADC12_SAMPLE_TIMER_SOURCE_SCOMP0, DL_ADC12_AVERAGING_MODE_DISABLED,
        DL_ADC12_BURN_OUT_SOURCE_DISABLED, DL_ADC12_TRIGGER_MODE_AUTO_NEXT, DL_ADC12_WINDOWS_COMP_MODE_DISABLED);
    DL_ADC12_configConversionMem(ADC12_0_INST, ADC12_0_ADCMEM_2,
        DL_ADC12_INPUT_CHAN_0, DL_ADC12_REFERENCE_VOLTAGE_VDDA, DL_ADC12_SAMPLE_TIMER_SOURCE_SCOMP0, DL_ADC12_AVERAGING_MODE_DISABLED,
        DL_ADC12_BURN_OUT_SOURCE_DISABLED, DL_ADC12_TRIGGER_MODE_AUTO_NEXT, DL_ADC12_WINDOWS_COMP_MODE_DISABLED);
    DL_ADC12_configConversionMem(ADC12_0_INST, ADC12_0_ADCMEM_3,
        DL_ADC12_INPUT_CHAN_0, DL_ADC12_REFERENCE_VOLTAGE_VDDA, DL_ADC12_SAMPLE_TIMER_SOURCE_SCOMP0, DL_ADC12_AVERAGING_MODE_DISABLED,
        DL_ADC12_BURN_OUT_SOURCE_DISABLED, DL_ADC12_TRIGGER_MODE_AUTO_NEXT, DL_ADC12_WINDOWS_COMP_MODE_DISABLED);

Hello Dennis,

Apologies for the late reply. I've been working on this, attempting to retrieve ADC values through interrupts. I'm receiving a value of 4095 (12-bit) in the first switch case, ADC_Count_0, but in ADC_Count_1 and ADC_Count_2, it's coming out as zero. Could you please guide me on anything I might have missed

static UINT16 ADC_Count_0;
static UINT16 ADC_Count_1;
static UINT16 ADC_Count_2;

void ADC12_0_INST_IRQHandler(void)
{
    switch (DL_ADC12_getPendingInterrupt(ADC12_0_INST)) {

    case DL_ADC12_IIDX_MEM0_RESULT_LOADED:

        DL_ADC12_configConversionMem(ADC12_0_INST,
        DL_ADC12_MEM_IDX_0,
        DL_ADC12_INPUT_CHAN_5,
        DL_ADC12_REFERENCE_VOLTAGE_VDDA,
        DL_ADC12_SAMPLE_TIMER_SOURCE_SCOMP0,
        DL_ADC12_AVERAGING_MODE_DISABLED,
        DL_ADC12_BURN_OUT_SOURCE_DISABLED,
        DL_ADC12_TRIGGER_MODE_AUTO_NEXT,
        DL_ADC12_WINDOWS_COMP_MODE_DISABLED);
        
        ADC_Count_0 = DL_ADC12_getMemResult(ADC12_0_INST,
        DL_ADC12_MEM_IDX_0);
        
        DL_ADC12_clearInterruptStatus(ADC12_0_INST,
        (DL_ADC12_INTERRUPT_MEM0_RESULT_LOADED));
        
        DL_ADC12_disableInterrupt(ADC12_0_INST,
        (DL_ADC12_INTERRUPT_MEM0_RESULT_LOADED));
        
        DL_ADC12_enableInterrupt(ADC12_0_INST,
        (DL_ADC12_INTERRUPT_MEM1_RESULT_LOADED));
        
        break;

    case DL_ADC12_IIDX_MEM1_RESULT_LOADED:
    
        DL_ADC12_configConversionMem(ADC12_0_INST,
        DL_ADC12_MEM_IDX_1,
        DL_ADC12_INPUT_CHAN_3,
        DL_ADC12_REFERENCE_VOLTAGE_VDDA,
        DL_ADC12_SAMPLE_TIMER_SOURCE_SCOMP0,
        DL_ADC12_AVERAGING_MODE_DISABLED,
        DL_ADC12_BURN_OUT_SOURCE_DISABLED,
        DL_ADC12_TRIGGER_MODE_AUTO_NEXT,
        DL_ADC12_WINDOWS_COMP_MODE_DISABLED);
        
        ADC_Count_1 = DL_ADC12_getMemResult(ADC12_0_INST,
        DL_ADC12_MEM_IDX_1);
        
        DL_ADC12_clearInterruptStatus(ADC12_0_INST,
        (DL_ADC12_INTERRUPT_MEM1_RESULT_LOADED));
        
        DL_ADC12_disableInterrupt(ADC12_0_INST,
        (DL_ADC12_INTERRUPT_MEM1_RESULT_LOADED));
        
        DL_ADC12_enableInterrupt(ADC12_0_INST,
        (DL_ADC12_INTERRUPT_MEM2_RESULT_LOADED));
        
        break;
    
    case DL_ADC12_IIDX_MEM2_RESULT_LOADED:
    
        DL_ADC12_configConversionMem(ADC12_0_INST,
        DL_ADC12_MEM_IDX_2,
        DL_ADC12_INPUT_CHAN_4,
        DL_ADC12_REFERENCE_VOLTAGE_VDDA,
        DL_ADC12_SAMPLE_TIMER_SOURCE_SCOMP0,
        DL_ADC12_AVERAGING_MODE_DISABLED,
        DL_ADC12_BURN_OUT_SOURCE_DISABLED,
        DL_ADC12_TRIGGER_MODE_AUTO_NEXT,
        DL_ADC12_WINDOWS_COMP_MODE_DISABLED);
        
        ADC_Count_2 = DL_ADC12_getMemResult(ADC12_0_INST,
        DL_ADC12_MEM_IDX_2);
        
        DL_ADC12_clearInterruptStatus(ADC12_0_INST,
        (DL_ADC12_INTERRUPT_MEM2_RESULT_LOADED));
        
        DL_ADC12_disableInterrupt(ADC12_0_INST,
        (DL_ADC12_INTERRUPT_MEM2_RESULT_LOADED));
        
        DL_ADC12_enableInterrupt(ADC12_0_INST,
        (DL_ADC12_INTERRUPT_MEM0_RESULT_LOADED));
        
        }
        break;
    
    default:
    break;
}

Hi Dennis,

Can you Please reply for this.we are waiting for for your reply.