I am trying to use the code below to read 8 channels from ADC1. I have ADC1 configured with 8 ranks, and have selected "EOC flag at the end of all conversions". HAL_ADC_PollForConversion() hangs forever.
I noticed that if I pass the second argument to HAL_ADC_PollForConversion as 1 less than the number of ranks, all but one of the values gets filled in but HAL_ADC_PollForConversion does return. My current workaround is to configure an extra rank (i.e. configure for 9 ranks, of which I only read the first 8).
#define NUM_CHANNELS 8
void readPowerChannels() {
uint16_t rawData[NUM_CHANNELS];
for (int i = 0; i < NUM_CHANNELS; i++) {
rawData[i] = 13; // So we can see in in the debugger which values are being written
}
HAL_ADC_Start_DMA(&hadc1, (uint32_t*) rawData, NUM_CHANNELS);
HAL_ADC_PollForConversion(&hadc1, HAL_MAX_DELAY);
}
