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stm32/adc: Add support to pyb.ADC for STM32WB MCUs.

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This commit is contained in:
Damien George 2020-06-01 21:29:11 +10:00
parent 68d053c66e
commit 5210fc51ec
2 changed files with 24 additions and 14 deletions
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37
ports/stm32/adc.c
View File

@ -110,14 +110,14 @@
#define ADC_CAL2 ((uint16_t *)(0x1FF1E840))
#define ADC_CAL_BITS (16)
#elif defined(STM32L4)
#elif defined(STM32L4) || defined(STM32WB)
#define ADC_FIRST_GPIO_CHANNEL (1)
#define ADC_LAST_GPIO_CHANNEL (16)
#define ADC_SCALE_V (3.0f)
#define ADC_CAL_ADDRESS (0x1fff75aa)
#define ADC_CAL1 ((uint16_t *)(ADC_CAL_ADDRESS - 2))
#define ADC_CAL2 ((uint16_t *)(ADC_CAL_ADDRESS + 0x20))
#define ADC_SCALE_V (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)
#else
@ -147,7 +147,8 @@
#elif defined(STM32L432xx) || \
defined(STM32L451xx) || defined(STM32L452xx) || \
defined(STM32L462xx) || defined(STM32L475xx) || \
defined(STM32L476xx) || defined(STM32L496xx)
defined(STM32L476xx) || defined(STM32L496xx) || \
defined(STM32WB55xx)
#define VBAT_DIV (3)
#else
#error Unsupported processor
@ -203,6 +204,11 @@ STATIC bool is_adcx_channel(int channel) {
ADC_HandleTypeDef handle;
handle.Instance = ADCx;
return IS_ADC_CHANNEL(&handle, channel);
#elif defined(STM32WB)
ADC_HandleTypeDef handle;
handle.Instance = ADCx;
return __HAL_ADC_IS_CHANNEL_INTERNAL(channel)
|| IS_ADC_CHANNEL(&handle, __HAL_ADC_DECIMAL_NB_TO_CHANNEL(channel));
#else
#error Unsupported processor
#endif
@ -212,7 +218,7 @@ STATIC void adc_wait_for_eoc_or_timeout(int32_t timeout) {
uint32_t tickstart = HAL_GetTick();
#if defined(STM32F4) || defined(STM32F7)
while ((ADCx->SR & ADC_FLAG_EOC) != ADC_FLAG_EOC) {
#elif defined(STM32F0) || defined(STM32H7) || defined(STM32L4)
#elif defined(STM32F0) || defined(STM32H7) || defined(STM32L4) || defined(STM32WB)
while (READ_BIT(ADCx->ISR, ADC_FLAG_EOC) != ADC_FLAG_EOC) {
#else
#error Unsupported processor
@ -229,7 +235,10 @@ STATIC void adcx_clock_enable(void) {
#elif defined(STM32H7)
__HAL_RCC_ADC3_CLK_ENABLE();
__HAL_RCC_ADC_CONFIG(RCC_ADCCLKSOURCE_CLKP);
#elif defined(STM32L4)
#elif defined(STM32L4) || defined(STM32WB)
if (__HAL_RCC_GET_ADC_SOURCE() == RCC_ADCCLKSOURCE_NONE) {
__HAL_RCC_ADC_CONFIG(RCC_ADCCLKSOURCE_SYSCLK);
}
__HAL_RCC_ADC_CLK_ENABLE();
#else
#error Unsupported processor
@ -269,7 +278,7 @@ 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)
#elif defined(STM32L4) || defined(STM32WB)
adch->Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
adch->Init.ScanConvMode = ADC_SCAN_DISABLE;
adch->Init.LowPowerAutoWait = DISABLE;
@ -286,7 +295,7 @@ 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)
#if defined(STM32L4) || defined(STM32WB)
HAL_ADCEx_Calibration_Start(adch, ADC_SINGLE_ENDED);
#endif
}
@ -313,7 +322,7 @@ 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)
#if 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);
@ -337,7 +346,7 @@ 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)
#elif defined(STM32L4) || defined(STM32WB)
if (__HAL_ADC_IS_CHANNEL_INTERNAL(channel)) {
sConfig.SamplingTime = ADC_SAMPLETIME_247CYCLES_5;
} else {
@ -523,7 +532,7 @@ 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)
ADCx->CR2 |= (uint32_t)ADC_CR2_SWSTART;
#elif defined(STM32F0) || defined(STM32H7) || defined(STM32L4)
#elif defined(STM32F0) || defined(STM32H7) || defined(STM32L4) || defined(STM32WB)
SET_BIT(ADCx->CR, ADC_CR_ADSTART);
#else
#error Unsupported processor
@ -633,7 +642,7 @@ 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)
ADCx->CR2 |= (uint32_t)ADC_CR2_SWSTART;
#elif defined(STM32F0) || defined(STM32H7) || defined(STM32L4)
#elif defined(STM32F0) || defined(STM32H7) || defined(STM32L4) || defined(STM32WB)
SET_BIT(ADCx->CR, ADC_CR_ADSTART);
#else
#error Unsupported processor

1
ports/stm32/boards/stm32l4xx_hal_conf_base.h
View File

@ -50,6 +50,7 @@
#include "stm32l4xx_hal_uart.h"
#include "stm32l4xx_hal_usart.h"
#include "stm32l4xx_hal_wwdg.h"
#include "stm32l4xx_ll_adc.h"
// Enable various HAL modules
#define HAL_MODULE_ENABLED