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do the math once instead of per-sample

This commit is contained in:
Matthew Kennedy 2024-07-21 13:10:22 -07:00
parent 550d4326b7
commit 1f1ace4ced
1 changed files with 3 additions and 3 deletions
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6
firmware/hw_layer/ports/stm32/stm32_adc_v2.cpp
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@ -158,7 +158,7 @@ static constexpr ADCConversionGroup convGroupSlow = {
static NO_CACHE adcsample_t slowSampleBuffer[SLOW_ADC_OVERSAMPLE * adcChannelCount];
static bool readBatch(adcsample_t* convertedSamples, size_t start) {
static bool readBatch(adcsample_t* convertedSamples) {
msg_t result = adcConvert(&ADCD1, &convGroupSlow, slowSampleBuffer, SLOW_ADC_OVERSAMPLE);
// If something went wrong - try again later
@ -176,7 +176,7 @@ static bool readBatch(adcsample_t* convertedSamples, size_t start) {
}
adcsample_t value = static_cast<adcsample_t>(sum / SLOW_ADC_OVERSAMPLE);
convertedSamples[start + i] = value;
convertedSamples[i] = value;
}
return true;
@ -190,7 +190,7 @@ bool readSlowAnalogInputs(adcsample_t* convertedSamples) {
#ifdef ADC_MUX_PIN
muxControl.setValue(1);
// read the second batch, starting where we left off
result &= readBatch(convertedSamples, adcChannelCount);
result &= readBatch(convertedSamples + adcChannelCount);
muxControl.setValue(0);
#endif