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)
while (READ_BIT(ADCx->ISR, ADC_FLAG_EOC) != ADC_FLAG_EOC) {
#else
#error Unsupported processor
#endif
if (((HAL_GetTick() - tickstart ) > timeout)) {
break; // timeout
}
}
}
STATIC void adcx_clock_enable(void) {
#if defined(STM32F0) || defined(STM32F4) || defined(STM32F7)
ADCx_CLK_ENABLE();
#elif defined(STM32H7)
__HAL_RCC_ADC3_CLK_ENABLE();
__HAL_RCC_ADC_CONFIG(RCC_ADCCLKSOURCE_CLKP);
#elif defined(STM32L4)
__HAL_RCC_ADC_CLK_ENABLE();
#else
#error Unsupported processor
#endif
}
/*****************************************************************
* ADC MSP initialization
*
* This function configures the hardware resources used in this example:
* - Enable clock of ADC peripheral
* - Configure the GPIO associated to the peripheral channels
* - Configure the DMA associated to the peripheral
* - Configure the NVIC associated to the peripheral interruptions
* @param hadc: ADC handle pointer
* @retval None
*/
void HAL_ADC_MspInit (ADC_HandleTypeDef *hadc)
{
GPIO_InitTypeDef GPIO_InitStruct;
DMA_HandleTypeDef DmaHandle;
/*##-1- Enable peripherals and GPIO Clocks ###################*/
/* Enable clock of GPIO associated to the peripheral channels */
ADCx_CHANNELa_GPIO_CLK_ENABLE();
/* Enable clock of ADCx peripheral */
ADCx_CLK_ENABLE();
/* ADC Periph interface clock configuration */
__HAL_RCC_ADC_CONFIG(RCC_ADCCLKSOURCE_SYSCLK);
/* Enable clock of DMA associated to the peripheral */
ADCx_DMA_CLK_ENABLE();
/*##-2- Configure peripheral GPIO ############################*/
/* Configure GPIO pin of the selected ADC channel */
GPIO_InitStruct.Pin = ADCx_CHANNELa_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG_ADC_CONTROL;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(ADCx_CHANNELa_GPIO_PORT, &GPIO_InitStruct);
/*##-3- Configure the DMA ####################################*/
/* Configure DMA parameters */
DmaHandle.Instance = ADCx_DMA;
DmaHandle.Init.Request = DMA_REQUEST_0;
DmaHandle.Init.Direction = DMA_PERIPH_TO_MEMORY;
DmaHandle.Init.PeriphInc = DMA_PINC_DISABLE;
DmaHandle.Init.MemInc = DMA_MINC_ENABLE;
DmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD; /* Transfer from ADC by half-word to match with ADC configuration: ADC resolution 10 or 12 bits */
DmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD; /* Transfer to memory by half-word to match with buffer variable type: half-word */
DmaHandle.Init.Mode = DMA_CIRCULAR; /* DMA in circular mode to match with ADC configuration: DMA continuous requests */
DmaHandle.Init.Priority = DMA_PRIORITY_HIGH;
/* Deinitialize & Initialize the DMA for new transfer */
HAL_DMA_DeInit(&DmaHandle);
HAL_DMA_Init(&DmaHandle);
/* Associate the initialized DMA handle to the ADC handle */
__HAL_LINKDMA(hadc, DMA_Handle, DmaHandle);
/*##-4- Configure the NVIC #########################################*/
/* NVIC configuration for DMA interrupt (transfer completion or error) */
/* Priority: high-priority */
HAL_NVIC_SetPriority(ADCx_DMA_IRQn, 1, 0);
HAL_NVIC_EnableIRQ(ADCx_DMA_IRQn);
/* NVIC configuration for ADC interrupt */
/* Priority: high-priority */
HAL_NVIC_SetPriority(ADCx_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(ADCx_IRQn);
}
/**
* @brief ADC MSP Initialization
* This function configures the hardware resources used in this example:
* - Peripheral's clock enable
* - Peripheral's GPIO Configuration
* @param hadc: ADC handle pointer
* @retval None
*/
void HAL_ADC_MspInit(ADC_HandleTypeDef *hadc)
{
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_TypeDef *port;
/*##-1- Enable peripherals and GPIO Clocks #################################*/
/* ADC Periph clock enable */
if(hadc->Instance == ADC1) {
#ifdef __HAL_RCC_ADC1_CLK_ENABLE
__HAL_RCC_ADC1_CLK_ENABLE();
#endif
#ifdef __HAL_RCC_ADC12_CLK_ENABLE
__HAL_RCC_ADC12_CLK_ENABLE();
#endif
}
#ifdef ADC2
else if(hadc->Instance == ADC2) {
#ifdef __HAL_RCC_ADC2_CLK_ENABLE
__HAL_RCC_ADC2_CLK_ENABLE();
#endif
#ifdef __HAL_RCC_ADC12_CLK_ENABLE
__HAL_RCC_ADC12_CLK_ENABLE();
#endif
}
#endif
#ifdef ADC3
else if(hadc->Instance == ADC3) {
#ifdef __HAL_RCC_ADC3_CLK_ENABLE
__HAL_RCC_ADC3_CLK_ENABLE();
#endif
#ifdef __HAL_RCC_ADC34_CLK_ENABLE
__HAL_RCC_ADC34_CLK_ENABLE();
#endif
}
#endif
#ifdef ADC4
else if(hadc->Instance == ADC4) {
__HAL_RCC_ADC34_CLK_ENABLE();
}
#endif
#ifdef __HAL_RCC_ADC_CLK_ENABLE
__HAL_RCC_ADC_CLK_ENABLE();
#endif
/* For STM32F1xx, ADC prescaler is confgured in SystemClock_Config (variant.cpp) */
#if defined(__HAL_RCC_ADC_CONFIG) && !defined(STM32F1xx)
/* ADC Periph interface clock configuration */
__HAL_RCC_ADC_CONFIG(RCC_ADCCLKSOURCE_SYSCLK);
#endif
/* Enable GPIO clock ****************************************/
port = set_GPIO_Port_Clock(STM_PORT(g_current_pin));
/*##-2- Configure peripheral GPIO ##########################################*/
/* ADC Channel GPIO pin configuration */
GPIO_InitStruct.Pin = STM_GPIO_PIN(g_current_pin);
#ifdef GPIO_MODE_ANALOG_ADC_CONTROL
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG_ADC_CONTROL;
#else
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
#endif
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(port, &GPIO_InitStruct);
}
