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Diffstat (limited to 'ports/stm32/adc.c')
-rw-r--r--ports/stm32/adc.c50
1 files changed, 41 insertions, 9 deletions
diff --git a/ports/stm32/adc.c b/ports/stm32/adc.c
index 3e61abce3..2e52fb07a 100644
--- a/ports/stm32/adc.c
+++ b/ports/stm32/adc.c
@@ -102,6 +102,16 @@
#define ADC_CAL2 ((uint16_t *)(ADC_CAL_ADDRESS + 4))
#define ADC_CAL_BITS (12)
+#elif defined(STM32G4)
+
+#define ADC_FIRST_GPIO_CHANNEL (0)
+#define ADC_LAST_GPIO_CHANNEL (18)
+#define ADC_SCALE_V (((float)VREFINT_CAL_VREF) / 1000.0f)
+#define ADC_CAL_ADDRESS VREFINT_CAL_ADDR
+#define ADC_CAL1 TEMPSENSOR_CAL1_ADDR
+#define ADC_CAL2 TEMPSENSOR_CAL2_ADDR
+#define ADC_CAL_BITS (12) // UM2570, __HAL_ADC_CALC_TEMPERATURE: 'corresponds to a resolution of 12 bits'
+
#elif defined(STM32H7)
#define ADC_SCALE_V (3.3f)
@@ -141,6 +151,8 @@
defined(STM32F746xx) || defined(STM32F765xx) || \
defined(STM32F767xx) || defined(STM32F769xx)
#define VBAT_DIV (4)
+#elif defined(STM32G4)
+#define VBAT_DIV (3)
#elif defined(STM32H743xx) || defined(STM32H747xx) || \
defined(STM32H7A3xx) || defined(STM32H7A3xxQ) || \
defined(STM32H7B3xx) || defined(STM32H7B3xxQ) || \
@@ -206,7 +218,7 @@ STATIC bool is_adcx_channel(int channel) {
ADC_HandleTypeDef handle;
handle.Instance = ADCx;
return IS_ADC_CHANNEL(&handle, channel);
- #elif defined(STM32WB)
+ #elif defined(STM32G4) || defined(STM32WB)
ADC_HandleTypeDef handle;
handle.Instance = ADCx;
return __HAL_ADC_IS_CHANNEL_INTERNAL(channel)
@@ -220,7 +232,7 @@ STATIC void adc_wait_for_eoc_or_timeout(ADC_HandleTypeDef *adcHandle, int32_t ti
uint32_t tickstart = HAL_GetTick();
#if defined(STM32F4) || defined(STM32F7)
while ((adcHandle->Instance->SR & ADC_FLAG_EOC) != ADC_FLAG_EOC) {
- #elif defined(STM32F0) || defined(STM32H7) || defined(STM32L4) || defined(STM32WB)
+ #elif defined(STM32F0) || defined(STM32G4) || defined(STM32H7) || defined(STM32L4) || defined(STM32WB)
while (READ_BIT(adcHandle->Instance->ISR, ADC_FLAG_EOC) != ADC_FLAG_EOC) {
#else
#error Unsupported processor
@@ -237,6 +249,8 @@ STATIC void adcx_clock_enable(ADC_HandleTypeDef *adch) {
#elif defined(STM32H7A3xx) || defined(STM32H7A3xxQ) || defined(STM32H7B3xx) || defined(STM32H7B3xxQ)
__HAL_RCC_ADC12_CLK_ENABLE();
__HAL_RCC_ADC_CONFIG(RCC_ADCCLKSOURCE_CLKP);
+ #elif defined(STM32G4)
+ __HAL_RCC_ADC12_CLK_ENABLE();
#elif defined(STM32H7)
if (adch->Instance == ADC3) {
__HAL_RCC_ADC3_CLK_ENABLE();
@@ -286,7 +300,7 @@ STATIC void adcx_init_periph(ADC_HandleTypeDef *adch, uint32_t resolution) {
adch->Init.OversamplingMode = DISABLE;
adch->Init.LeftBitShift = ADC_LEFTBITSHIFT_NONE;
adch->Init.ConversionDataManagement = ADC_CONVERSIONDATA_DR;
- #elif defined(STM32L4) || defined(STM32WB)
+ #elif defined(STM32G4) || defined(STM32L4) || defined(STM32WB)
adch->Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
adch->Init.ScanConvMode = ADC_SCAN_DISABLE;
adch->Init.LowPowerAutoWait = DISABLE;
@@ -303,7 +317,7 @@ STATIC void adcx_init_periph(ADC_HandleTypeDef *adch, uint32_t resolution) {
#if defined(STM32H7)
HAL_ADCEx_Calibration_Start(adch, ADC_CALIB_OFFSET, ADC_SINGLE_ENDED);
#endif
- #if defined(STM32L4) || defined(STM32WB)
+ #if defined(STM32G4) || defined(STM32L4) || defined(STM32WB)
HAL_ADCEx_Calibration_Start(adch, ADC_SINGLE_ENDED);
#endif
}
@@ -312,7 +326,7 @@ STATIC void adc_init_single(pyb_obj_adc_t *adc_obj) {
adc_obj->handle.Instance = ADCx;
adcx_init_periph(&adc_obj->handle, ADC_RESOLUTION_12B);
- #if defined(STM32L4) && defined(ADC_DUALMODE_REGSIMULT_INJECSIMULT)
+ #if (defined(STM32G4) || defined(STM32L4)) && defined(ADC_DUALMODE_REGSIMULT_INJECSIMULT)
ADC_MultiModeTypeDef multimode;
multimode.Mode = ADC_MODE_INDEPENDENT;
if (HAL_ADCEx_MultiModeConfigChannel(&adc_obj->handle, &multimode) != HAL_OK) {
@@ -324,7 +338,7 @@ STATIC void adc_init_single(pyb_obj_adc_t *adc_obj) {
STATIC void adc_config_channel(ADC_HandleTypeDef *adc_handle, uint32_t channel) {
ADC_ChannelConfTypeDef sConfig;
- #if defined(STM32H7) || defined(STM32WB)
+ #if defined(STM32G4) || defined(STM32H7) || defined(STM32WB)
sConfig.Rank = ADC_REGULAR_RANK_1;
if (__HAL_ADC_IS_CHANNEL_INTERNAL(channel) == 0) {
channel = __HAL_ADC_DECIMAL_NB_TO_CHANNEL(channel);
@@ -352,7 +366,7 @@ STATIC void adc_config_channel(ADC_HandleTypeDef *adc_handle, uint32_t channel)
sConfig.OffsetNumber = ADC_OFFSET_NONE;
sConfig.OffsetRightShift = DISABLE;
sConfig.OffsetSignedSaturation = DISABLE;
- #elif defined(STM32L4) || defined(STM32WB)
+ #elif defined(STM32G4) || defined(STM32L4) || defined(STM32WB)
if (__HAL_ADC_IS_CHANNEL_INTERNAL(channel)) {
sConfig.SamplingTime = ADC_SAMPLETIME_247CYCLES_5;
} else {
@@ -536,7 +550,7 @@ STATIC mp_obj_t adc_read_timed(mp_obj_t self_in, mp_obj_t buf_in, mp_obj_t freq_
// for subsequent samples we can just set the "start sample" bit
#if defined(STM32F4) || defined(STM32F7)
self->handle.Instance->CR2 |= (uint32_t)ADC_CR2_SWSTART;
- #elif defined(STM32F0) || defined(STM32H7) || defined(STM32L4) || defined(STM32WB)
+ #elif defined(STM32F0) || defined(STM32G4) || defined(STM32H7) || defined(STM32L4) || defined(STM32WB)
SET_BIT(self->handle.Instance->CR, ADC_CR_ADSTART);
#else
#error Unsupported processor
@@ -646,7 +660,7 @@ STATIC mp_obj_t adc_read_timed_multi(mp_obj_t adc_array_in, mp_obj_t buf_array_i
// ADC is started: set the "start sample" bit
#if defined(STM32F4) || defined(STM32F7)
adc->handle.Instance->CR2 |= (uint32_t)ADC_CR2_SWSTART;
- #elif defined(STM32F0) || defined(STM32H7) || defined(STM32L4) || defined(STM32WB)
+ #elif defined(STM32F0) || defined(STM32G4) || defined(STM32H7) || defined(STM32L4) || defined(STM32WB)
SET_BIT(adc->handle.Instance->CR, ADC_CR_ADSTART);
#else
#error Unsupported processor
@@ -766,7 +780,16 @@ STATIC uint32_t adc_config_and_read_ref(ADC_HandleTypeDef *adcHandle, uint32_t c
}
int adc_read_core_temp(ADC_HandleTypeDef *adcHandle) {
+ #if defined(STM32G4)
+ int32_t raw_value = 0;
+ if (adcHandle->Instance == ADC1) {
+ raw_value = adc_config_and_read_ref(adcHandle, ADC_CHANNEL_TEMPSENSOR_ADC1);
+ } else {
+ return 0;
+ }
+ #else
int32_t raw_value = adc_config_and_read_ref(adcHandle, ADC_CHANNEL_TEMPSENSOR);
+ #endif
return ((raw_value - CORE_TEMP_V25) / CORE_TEMP_AVG_SLOPE) + 25;
}
@@ -775,7 +798,16 @@ int adc_read_core_temp(ADC_HandleTypeDef *adcHandle) {
STATIC volatile float adc_refcor = 1.0f;
float adc_read_core_temp_float(ADC_HandleTypeDef *adcHandle) {
+ #if defined(STM32G4)
+ int32_t raw_value = 0;
+ if (adcHandle->Instance == ADC1) {
+ raw_value = adc_config_and_read_ref(adcHandle, ADC_CHANNEL_TEMPSENSOR_ADC1);
+ } else {
+ return 0;
+ }
+ #else
int32_t raw_value = adc_config_and_read_ref(adcHandle, ADC_CHANNEL_TEMPSENSOR);
+ #endif
float core_temp_avg_slope = (*ADC_CAL2 - *ADC_CAL1) / 80.0f;
return (((float)raw_value * adc_refcor - *ADC_CAL1) / core_temp_avg_slope) + 30.0f;
}
generated by cgit v1.2.3 (git 2.46.0) at 2025-11-12 09:28:45 +0000