Other Parts Discussed in Thread: SYSCONFIG
Tool/software:
Hi - we are using the ADC12_0 in Sequence mode in a MSPM0G1505. We have set up ADC12 with the following parameters:
1. Clock Source - ULPCLK
2. Sample Clock divider Div by 8
3. Conversion Mode: Sequence
(a) Set Conversion Start Address - 0; End Address - 7
(b) Enable Repeat Mode is checked
(c) Sampling Mode is Auto
(d) Trigger Source is Software
5. ADC Conversion Memory 0-7 Conversion are set to use Sampling Timer 0 as Sample Period Source.
6. Enable Interrupts is set to MEM0 Result loaded Interrupt
In terms of reading the ADC .. this is the Pseudo Code:
DL_ADC12_startConversion(ADC12_0_INST);
while (false == gCheckADC0) {
}
process ADC registers
DL_ADC12_enableConversions(ADC12_1_INST);
The Interrupt routine is as follows:
void ADC12_0_INST_IRQHandler(void)
{
switch (DL_ADC12_getPendingInterrupt(ADC12_0_INST)) {
case DL_ADC12_IIDX_MEM0_RESULT_LOADED:
gCheckADC0 = true;
break;
default:
break;
}
}
The issue I'm having is that the ADC operation is a bit erratic. Sometimes the interrupt doesn't occur and ADC seems to be busy.
Any pointers why this can be happening? Are the above settings correct?
thanks
