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在STM32F303RE写了一个简单的程序， 将 ADC1设置为扫描连续模式， 以单端、12 位大小读取 IN6、IN7、IN8、IN9。 ADC1 开启了 DMA，使用半字大小、循环缓冲器。 一旦进入 while 循环，处理器就会崩溃，代码卡在 stm32fxx_it.c 文件中的 HardFault_Handler 函数中。
/* USER CODE BEGIN Header *//** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @Attention * * <h2><center>© Copyright (c) 2019 STMicroelectronics. * All rights reserved.</center></h2> * * This software component is licensed by ST under BSD 3-Clause license, * the "License"; You may not use this file except in compliance with the * License. You may obtain a copy of the License at: * opensource.org/licenses/BSD-3-Clause * ****************************************************************************** *//* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/#include "main.h" /* Private includes ----------------------------------------------------------*//* USER CODE BEGIN Includes */ /* USER CODE END Includes */ /* Private typedef -----------------------------------------------------------*//* USER CODE BEGIN PTD */ /* USER CODE END PTD */ /* Private define ------------------------------------------------------------*//* USER CODE BEGIN PD */ /* USER CODE END PD */ /* Private macro -------------------------------------------------------------*//* USER CODE BEGIN PM */ /* USER CODE END PM */ /* Private variables ---------------------------------------------------------*/ADC_HandleTypeDef hadc1;DMA_HandleTypeDef hdma_adc1; /* USER CODE BEGIN PV */ /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/void SystemClock_Config(void);static void MX_GPIO_Init(void);static void MX_DMA_Init(void);static void MX_ADC1_Init(void);/* USER CODE BEGIN PFP */ /* USER CODE END PFP */ /* Private user code ---------------------------------------------------------*//* USER CODE BEGIN 0 */uint16_t adcValArray[3];uint32_t k = 0;/* USER CODE END 0 */ /** * @brief The application entry point. * @retval int */int main(void){ /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_DMA_Init(); MX_ADC1_Init(); /* USER CODE BEGIN 2 */ HAL_ADC_Start_DMA(&hadc1, (uint32_t *)adcValArray, 8); /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { k += 1; /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ } /* USER CODE END 3 */} /** * @brief System Clock Configuration * @retval None */void SystemClock_Config(void){ RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; RCC_PeriphCLKInitTypeDef PeriphClkInit = {0}; /** Initializes the CPU, AHB and APB busses clocks */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI; RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL2; RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { Error_Handler(); } /** Initializes the CPU, AHB and APB busses clocks */ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK) { Error_Handler(); } PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC12; PeriphClkInit.Adc12ClockSelection = RCC_ADC12PLLCLK_DIV1; if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK) { Error_Handler(); }} /** * @brief ADC1 Initialization Function * @param None * @retval None */static void MX_ADC1_Init(void){ /* USER CODE BEGIN ADC1_Init 0 */ /* USER CODE END ADC1_Init 0 */ ADC_MultiModeTypeDef multimode = {0}; ADC_ChannelConfTypeDef sConfig = {0}; /* USER CODE BEGIN ADC1_Init 1 */ /* USER CODE END ADC1_Init 1 */ /** Common config */ hadc1.Instance = ADC1; hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1; hadc1.Init.Resolution = ADC_RESOLUTION_12B; hadc1.Init.ScanConvMode = ADC_SCAN_ENABLE; hadc1.Init.ContinuousConvMode = ENABLE; hadc1.Init.DiscontinuousConvMode = DISABLE; hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START; hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc1.Init.NbrOfConversion = 4; hadc1.Init.DMAContinuousRequests = ENABLE; hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV; hadc1.Init.LowPowerAutoWait = DISABLE; hadc1.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN; if (HAL_ADC_Init(&hadc1) != HAL_OK) { Error_Handler(); } /** Configure the ADC multi-mode */ multimode.Mode = ADC_MODE_INDEPENDENT; if (HAL_ADCEx_MultiModeConfigChannel(&hadc1, &multimode) != HAL_OK) { Error_Handler(); } /** Configure Regular Channel */ sConfig.Channel = ADC_CHANNEL_6; sConfig.Rank = ADC_REGULAR_RANK_1; sConfig.SingleDiff = ADC_SINGLE_ENDED; sConfig.SamplingTime = ADC_SAMPLETIME_19CYCLES_5; sConfig.OffsetNumber = ADC_OFFSET_NONE; sConfig.Offset = 0; if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) { Error_Handler(); } /** Configure Regular Channel */ sConfig.Channel = ADC_CHANNEL_7; sConfig.Rank = ADC_REGULAR_RANK_2; if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) { Error_Handler(); } /** Configure Regular Channel */ sConfig.Channel = ADC_CHANNEL_8; sConfig.Rank = ADC_REGULAR_RANK_3; if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) { Error_Handler(); } /** Configure Regular Channel */ sConfig.Channel = ADC_CHANNEL_9; sConfig.Rank = ADC_REGULAR_RANK_4; if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) { Error_Handler(); } /* USER CODE BEGIN ADC1_Init 2 */ /* USER CODE END ADC1_Init 2 */ } static void MX_DMA_Init(void) { /* DMA controller clock enable */ __HAL_RCC_DMA1_CLK_ENABLE(); /* DMA interrupt init */ /* DMA1_Channel1_IRQn interrupt configuration */ HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0); HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn); } static void MX_GPIO_Init(void){ /* GPIO Ports Clock Enable */ __HAL_RCC_GPIOC_CLK_ENABLE(); }
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