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ADC: DMA buffers should be quilified volatile

This commit is contained in:
Andrey Gusakov 2024-05-12 16:13:01 +03:00 committed by rusefillc
parent 75b3a26697
commit 5837abb4f1
2 changed files with 9 additions and 7 deletions
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4
firmware/hw_layer/adc/AdcConfiguration.h
View File

@ -23,7 +23,7 @@
class AdcDevice {
public:
explicit AdcDevice(ADCConversionGroup* p_hwConfig, adcsample_t *p_buf);
explicit AdcDevice(ADCConversionGroup* p_hwConfig, volatile adcsample_t *p_buf);
void enableChannel(adc_channel_e hwChannel);
adc_channel_e getAdcChannelByInternalIndex(int index) const;
adcsample_t getAvgAdcValue(adc_channel_e hwChannel, size_t bufDepth);
@ -32,7 +32,7 @@ public:
void init(void);
uint32_t conversionCount = 0;
adcsample_t *samples;
volatile adcsample_t *samples;
private:
ADCConversionGroup* hwConfig;
uint8_t internalAdcIndexByHardwareIndex[EFI_ADC_TOTAL_CHANNELS];

12
firmware/hw_layer/adc/adc_inputs.cpp
View File

@ -33,7 +33,7 @@ float __attribute__((weak)) getAnalogInputDividerCoefficient(adc_channel_e) {
#include "periodic_thread_controller.h"
#include "protected_gpio.h"
static NO_CACHE adcsample_t slowAdcSamples[SLOW_ADC_CHANNEL_COUNT];
static volatile NO_CACHE adcsample_t slowAdcSamples[SLOW_ADC_CHANNEL_COUNT];
static adc_channel_mode_e adcHwChannelMode[HW_MAX_ADC_INDEX];
@ -58,7 +58,7 @@ float getVoltage(const char *msg, adc_channel_e hwChannel) {
#define ADC_BUF_DEPTH_FAST 4
#endif
AdcDevice::AdcDevice(ADCConversionGroup* p_hwConfig, adcsample_t *p_buf) {
AdcDevice::AdcDevice(ADCConversionGroup* p_hwConfig, volatile adcsample_t *p_buf) {
hwConfig = p_hwConfig;
samples = p_buf;
@ -136,7 +136,7 @@ static ADCConversionGroup adcgrpcfgFast = {
#endif /* ADC_MAX_CHANNELS_COUNT */
};
static NO_CACHE adcsample_t fastAdcSampleBuf[ADC_BUF_DEPTH_FAST * ADC_MAX_CHANNELS_COUNT];
static volatile NO_CACHE adcsample_t fastAdcSampleBuf[ADC_BUF_DEPTH_FAST * ADC_MAX_CHANNELS_COUNT];
AdcDevice fastAdc(&adcgrpcfgFast, fastAdcSampleBuf);
@ -170,7 +170,8 @@ static void fastAdcTrigger(GPTDriver*) {
// todo: when? why? criticalError("ADC fast not ready?");
// see notes at https://github.com/rusefi/rusefi/issues/6399
} else {
adcStartConversionI(&ADC_FAST_DEVICE, &adcgrpcfgFast, fastAdc.samples, ADC_BUF_DEPTH_FAST);
/* drop volatile type qualifier - this is safe */
adcStartConversionI(&ADC_FAST_DEVICE, &adcgrpcfgFast, (adcsample_t *)fastAdc.samples, ADC_BUF_DEPTH_FAST);
}
chSysUnlockFromISR();
#endif /* EFI_INTERNAL_ADC */
@ -365,7 +366,8 @@ public:
{
ScopePerf perf(PE::AdcConversionSlow);
if (!readSlowAnalogInputs(slowAdcSamples)) {
/* drop volatile type qualifier - this is safe */
if (!readSlowAnalogInputs((adcsample_t *)slowAdcSamples)) {
slowAdcErrorsCount++;
return;
}