488 lines
16 KiB
C
488 lines
16 KiB
C
/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* @file Examples/ADC/ADC_MultiChannelSingleConversion/Src/main.c
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* @author MCD Application Team
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* @brief This example provides a short description of how to use the ADC
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* peripheral with sequencer, to convert several channels.
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* Channels converted are 1 channel on external pin and 2 internal
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* channels (VrefInt and temperature sensor).
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* Moreover, voltage and temperature are then computed.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2020 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* USER CODE END Header */
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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/* Private includes ----------------------------------------------------------*/
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/* USER CODE BEGIN Includes */
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/* USER CODE END Includes */
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/* Private typedef -----------------------------------------------------------*/
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/* USER CODE BEGIN PTD */
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/* USER CODE END PTD */
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/* Private define ------------------------------------------------------------*/
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/* USER CODE BEGIN PD */
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/* Definitions of environment analog values */
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/* Value of analog reference voltage (Vref+), connected to analog voltage */
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/* supply Vdda (unit: mV). */
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#define VDDA_APPLI (3300U)
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/* USER CODE END PD */
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/* Private macro -------------------------------------------------------------*/
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/* USER CODE BEGIN PM */
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/* USER CODE END PM */
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/* Private variables ---------------------------------------------------------*/
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ADC_HandleTypeDef hadc;
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DMA_HandleTypeDef hdma_adc;
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/* USER CODE BEGIN PV */
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/* Private variables ---------------------------------------------------------*/
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/* ADC handler declaration */
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/* Variables for ADC conversion data */
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__IO uint16_t aADCxConvertedData[ADC_CONVERTED_DATA_BUFFER_SIZE]; /* ADC group regular conversion data (array of data) */
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/* Variable to report status of DMA transfer of ADC group regular conversions */
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/* 0: DMA transfer is not completed */
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/* 1: DMA transfer is completed */
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/* 2: DMA transfer has not yet been started yet (initial state) */
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__IO uint8_t ubDmaTransferStatus = 2; /* Variable set into DMA interruption callback */
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/* Variable to manage push button on board: interface between ExtLine interruption and main program */
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__IO uint8_t ubUserButtonClickEvent = RESET; /* Event detection: Set after User Button interrupt */
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/* Variables for ADC conversion data computation to physical values */
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__IO uint16_t uhADCxConvertedData_VoltageGPIO_mVolt = 0U; /* Value of voltage on GPIO pin (on which is mapped ADC channel) calculated from ADC conversion data (unit: mV) */
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__IO uint16_t uhADCxConvertedData_VrefInt_mVolt = 0U; /* Value of internal voltage reference VrefInt calculated from ADC conversion data (unit: mV) */
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__IO int16_t hADCxConvertedData_Temperature_DegreeCelsius = 0U; /* Value of temperature calculated from ADC conversion data (unit: degree Celsius) */
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__IO uint16_t uhADCxConvertedData_VrefAnalog_mVolt = 0U; /* Value of analog reference voltage (Vref+), connected to analog voltage supply Vdda, calculated from ADC conversion data (unit: mV) */
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/* USER CODE END PV */
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/* Private function prototypes -----------------------------------------------*/
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void SystemClock_Config(void);
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static void MX_GPIO_Init(void);
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static void MX_DMA_Init(void);
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static void MX_ADC_Init(void);
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/* USER CODE BEGIN PFP */
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/* USER CODE END PFP */
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/* Private user code ---------------------------------------------------------*/
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/* USER CODE BEGIN 0 */
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/* USER CODE END 0 */
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/**
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* @brief The application entry point.
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* @retval int
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*/
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int main(void)
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{
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/* USER CODE BEGIN 1 */
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uint32_t tmp_index_adc_converted_data = 0;
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/* USER CODE END 1 */
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/* MCU Configuration--------------------------------------------------------*/
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/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
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HAL_Init();
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/* USER CODE BEGIN Init */
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/* USER CODE END Init */
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/* Configure the system clock */
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SystemClock_Config();
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/* USER CODE BEGIN SysInit */
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/* USER CODE END SysInit */
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/* Initialize all configured peripherals */
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MX_GPIO_Init();
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MX_DMA_Init();
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MX_ADC_Init();
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/* USER CODE BEGIN 2 */
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for (tmp_index_adc_converted_data = 0; tmp_index_adc_converted_data < ADC_CONVERTED_DATA_BUFFER_SIZE; tmp_index_adc_converted_data++)
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{
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aADCxConvertedData[tmp_index_adc_converted_data] = VAR_CONVERTED_DATA_INIT_VALUE;
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}
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/* Initialize LED on board */
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BSP_LED_Init(LED2);
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/* Configure User push-button (B1) in Interrupt mode */
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BSP_PB_Init(BUTTON_SW1, BUTTON_MODE_EXTI);
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/* Run the ADC calibration */
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if (HAL_ADCEx_Calibration_Start(&hadc) != HAL_OK)
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{
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/* Calibration Error */
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Error_Handler();
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}
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/* USER CODE END 2 */
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/* Infinite loop */
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/* USER CODE BEGIN WHILE */
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/*## Start ADC conversions ###############################################*/
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/* Start ADC group regular conversion with DMA */
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if (HAL_ADC_Start_DMA(&hadc,
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(uint32_t *)aADCxConvertedData,
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ADC_CONVERTED_DATA_BUFFER_SIZE
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) != HAL_OK)
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{
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/* ADC conversion start error */
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Error_Handler();
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}
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while (1)
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{
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/* Wait for event on push button to perform following actions */
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while ((ubUserButtonClickEvent) == RESET)
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{
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}
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/* Reset variable for next loop iteration (with debounce) */
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HAL_Delay(200);
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ubUserButtonClickEvent = RESET;
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/* Start ADC conversion */
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/* Since sequencer is enabled in discontinuous mode, this will perform */
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/* the conversion of the next rank in sequencer. */
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/* Note: For this example, conversion is triggered by software start, */
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/* therefore "HAL_ADC_Start()" must be called for each conversion. */
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/* Since DMA transfer has been initiated previously by function */
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/* "HAL_ADC_Start_DMA()", this function will keep DMA transfer */
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/* active. */
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if (HAL_ADC_Start(&hadc) != HAL_OK)
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{
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Error_Handler();
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}
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/* Wait for ADC conversion and DMA transfer completion (update of variable ubDmaTransferStatus) */
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HAL_Delay(10);
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/* Check whether ADC has converted all ranks of the sequence */
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if (ubDmaTransferStatus == 1)
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{
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/* Computation of ADC conversions raw data to physical values */
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/* using LL ADC driver helper macro. */
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/* Note: ADC results are transferred into array "aADCxConvertedData" */
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/* in the order of their rank in ADC sequencer. */
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uhADCxConvertedData_VoltageGPIO_mVolt = __LL_ADC_CALC_DATA_TO_VOLTAGE(VDDA_APPLI, aADCxConvertedData[0], LL_ADC_RESOLUTION_12B);
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uhADCxConvertedData_VrefInt_mVolt = __LL_ADC_CALC_DATA_TO_VOLTAGE(VDDA_APPLI, aADCxConvertedData[1], LL_ADC_RESOLUTION_12B);
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hADCxConvertedData_Temperature_DegreeCelsius = __LL_ADC_CALC_TEMPERATURE(VDDA_APPLI, aADCxConvertedData[2], LL_ADC_RESOLUTION_12B);
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/* Optionally, for this example purpose, calculate analog reference */
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/* voltage (Vref+) from ADC conversion of internal voltage reference */
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/* VrefInt. */
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/* This voltage should correspond to value of literal "VDDA_APPLI". */
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/* Note: This calculation can be performed when value of voltage Vref+ */
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/* is unknown in the application. */
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uhADCxConvertedData_VrefAnalog_mVolt = __LL_ADC_CALC_VREFANALOG_VOLTAGE(aADCxConvertedData[1], LL_ADC_RESOLUTION_12B);
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/* Clear DMA buffer when filled before refilling it */
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for (tmp_index_adc_converted_data = 0; tmp_index_adc_converted_data < ADC_CONVERTED_DATA_BUFFER_SIZE; tmp_index_adc_converted_data++)
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{
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aADCxConvertedData[tmp_index_adc_converted_data] = VAR_CONVERTED_DATA_INIT_VALUE;
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}
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/* Update status variable of DMA transfer */
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ubDmaTransferStatus = 0;
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}
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/* USER CODE END WHILE */
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/* USER CODE BEGIN 3 */
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/* Note: LED state depending on DMA transfer status is set into DMA */
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/* IRQ handler, refer to functions "HAL_ADC_ConvCpltCallback()" */
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/* and "HAL_ADC_ConvHalfCpltCallback()". */
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/* Note: ADC conversions data are stored into array */
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/* "aADCxConvertedData" */
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/* (for debug: see variable content into watch window). */
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}
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/* USER CODE END 3 */
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}
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/**
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* @brief System Clock Configuration
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* @retval None
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*/
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void SystemClock_Config(void)
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{
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RCC_OscInitTypeDef RCC_OscInitStruct = {0};
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RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
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/** Configure the main internal regulator output voltage
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*/
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__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
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/** Initializes the CPU, AHB and APB buses clocks
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*/
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_MSI;
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RCC_OscInitStruct.HSIState = RCC_HSI_ON;
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RCC_OscInitStruct.MSIState = RCC_MSI_ON;
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RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
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RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT;
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RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_8;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI;
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RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV4;
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RCC_OscInitStruct.PLL.PLLN = 24;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
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RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
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RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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Error_Handler();
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}
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/** Configure the SYSCLKSource, HCLK, PCLK1 and PCLK2 clocks dividers
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*/
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK3|RCC_CLOCKTYPE_HCLK
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|RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1
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|RCC_CLOCKTYPE_PCLK2;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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RCC_ClkInitStruct.AHBCLK3Divider = RCC_SYSCLK_DIV1;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
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{
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Error_Handler();
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}
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}
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/**
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* @brief ADC Initialization Function
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* @param None
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* @retval None
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*/
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static void MX_ADC_Init(void)
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{
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/* USER CODE BEGIN ADC_Init 0 */
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/* USER CODE END ADC_Init 0 */
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ADC_ChannelConfTypeDef sConfig = {0};
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/* USER CODE BEGIN ADC_Init 1 */
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/* USER CODE END ADC_Init 1 */
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/** Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
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*/
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hadc.Instance = ADC;
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hadc.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
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hadc.Init.Resolution = ADC_RESOLUTION_12B;
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hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
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hadc.Init.ScanConvMode = ADC_SCAN_ENABLE;
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hadc.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
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hadc.Init.LowPowerAutoWait = DISABLE;
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hadc.Init.LowPowerAutoPowerOff = DISABLE;
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hadc.Init.ContinuousConvMode = DISABLE;
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hadc.Init.NbrOfConversion = 3;
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hadc.Init.DiscontinuousConvMode = ENABLE;
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hadc.Init.ExternalTrigConv = ADC_SOFTWARE_START;
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hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
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hadc.Init.DMAContinuousRequests = DISABLE;
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hadc.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
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hadc.Init.SamplingTimeCommon1 = ADC_SAMPLETIME_39CYCLES_5;
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hadc.Init.SamplingTimeCommon2 = ADC_SAMPLETIME_160CYCLES_5;
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hadc.Init.OversamplingMode = DISABLE;
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hadc.Init.TriggerFrequencyMode = ADC_TRIGGER_FREQ_HIGH;
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if (HAL_ADC_Init(&hadc) != HAL_OK)
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{
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Error_Handler();
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}
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/** Configure Regular Channel
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*/
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sConfig.Channel = ADC_CHANNEL_4;
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sConfig.Rank = ADC_REGULAR_RANK_1;
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sConfig.SamplingTime = ADC_SAMPLINGTIME_COMMON_1;
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if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
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{
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Error_Handler();
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}
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/** Configure Regular Channel
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*/
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sConfig.Channel = ADC_CHANNEL_VREFINT;
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sConfig.Rank = ADC_REGULAR_RANK_2;
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sConfig.SamplingTime = ADC_SAMPLINGTIME_COMMON_2;
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if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
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{
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Error_Handler();
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}
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/** Configure Regular Channel
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*/
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sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;
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sConfig.Rank = ADC_REGULAR_RANK_3;
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if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
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{
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Error_Handler();
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}
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/* USER CODE BEGIN ADC_Init 2 */
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/* USER CODE END ADC_Init 2 */
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}
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/**
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* Enable DMA controller clock
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*/
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static void MX_DMA_Init(void)
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{
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/* DMA controller clock enable */
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__HAL_RCC_DMAMUX1_CLK_ENABLE();
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__HAL_RCC_DMA1_CLK_ENABLE();
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/* DMA interrupt init */
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/* DMA1_Channel1_IRQn interrupt configuration */
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HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0);
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HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn);
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}
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/**
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* @brief GPIO Initialization Function
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* @param None
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* @retval None
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*/
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static void MX_GPIO_Init(void)
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{
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/* GPIO Ports Clock Enable */
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__HAL_RCC_GPIOB_CLK_ENABLE();
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}
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/* USER CODE BEGIN 4 */
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/******************************************************************************/
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/* USER IRQ HANDLER TREATMENT */
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/******************************************************************************/
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/**
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* @brief EXTI line detection callbacks
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* @param GPIO_Pin: Specifies the pins connected EXTI line
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* @retval None
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*/
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void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
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{
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if (GPIO_Pin == BUTTON_SW1_PIN)
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{
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/* Set variable to report push button event to main program */
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ubUserButtonClickEvent = SET;
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}
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}
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/**
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* @brief Conversion complete callback in non blocking mode
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* @param hadc: ADC handle
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* @note This example shows a simple way to report end of conversion
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* and get conversion result. You can add your own implementation.
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* @retval None
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*/
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void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef *hadc)
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{
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/* Update status variable of DMA transfer */
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ubDmaTransferStatus = 1;
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/* Set LED depending on DMA transfer status */
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/* - Turn-on if DMA transfer is completed */
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/* - Turn-off if DMA transfer is not completed */
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BSP_LED_On(LED2);
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}
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/**
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* @brief Conversion DMA half-transfer callback in non blocking mode
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* @note This example shows a simple way to report end of conversion
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* and get conversion result. You can add your own implementation.
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* @retval None
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*/
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void HAL_ADC_ConvHalfCpltCallback(ADC_HandleTypeDef *hadc)
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{
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/* Set LED depending on DMA transfer status */
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/* - Turn-on if DMA transfer is completed */
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/* - Turn-off if DMA transfer is not completed */
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BSP_LED_Off(LED2);
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}
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/**
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* @brief ADC error callback in non blocking mode
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* (ADC conversion with interruption or transfer by DMA)
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* @param hadc: ADC handle
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* @retval None
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*/
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void HAL_ADC_ErrorCallback(ADC_HandleTypeDef *hadc)
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{
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/* In case of ADC error, call main error handler */
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Error_Handler();
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}
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/* USER CODE END 4 */
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/**
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* @brief This function is executed in case of error occurrence.
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* @retval None
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*/
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void Error_Handler(void)
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{
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/* USER CODE BEGIN Error_Handler_Debug */
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/* User can add his own implementation to report the HAL error return state */
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while(1)
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{
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/* Toggle LED2 */
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BSP_LED_Off(LED2);
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HAL_Delay(800);
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BSP_LED_On(LED2);
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HAL_Delay(10);
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BSP_LED_Off(LED2);
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HAL_Delay(180);
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BSP_LED_On(LED2);
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HAL_Delay(10);
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}
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/* USER CODE END Error_Handler_Debug */
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t *file, uint32_t line)
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{
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/* USER CODE BEGIN 6 */
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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Error_Handler();
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/* USER CODE END 6 */
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}
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#endif /* USE_FULL_ASSERT */
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