[问答]

请问ADC DMA在stm32H743中不起作用怎么办？

问答对人有帮助，内容完整，我也想知道答案 0 我是 STM32 的新手，想通过 DMA 读取 ADC。我浏览了一些视频并尝试阅读它但从中受益。下面是代码请指导我 /* Includes ------------------------------------------------------------------/ #include "main.h" #include "stm32h7xx_hal.h" / USER CODE BEGIN Includes / / USER CODE END Includes / / Private variables ---------------------------------------------------------/ ADC_HandleTypeDef hadc1; DMA_HandleTypeDef hdma_adc1; UART_HandleTypeDef huart1; / USER CODE BEGIN PV / / Private variables ---------------------------------------------------------/ / 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); static void MX_USART1_UART_Init(void); / USER CODE BEGIN PFP / / Private function prototypes -----------------------------------------------/ / USER CODE END PFP / / USER CODE BEGIN 0 / / USER CODE END 0 / uint32_t value[3]; uint32_t val_2=0; unsigned char data[] = " rn"; 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(); MX_USART1_UART_Init(); / USER CODE BEGIN 2 / / USER CODE END 2 / HAL_ADC_Start_DMA(&hadc1,value,3); / Infinite loop / / USER CODE BEGIN WHILE / while (1) { / USER CODE END WHILE / data[0]=value[0]/10000+48; val_2 = value[0]%10000; data[1]=val_2/1000+48; val_2 = val_2%1000; data[2]=val_2/100+48; val_2 = val_2%100; data[3]=val_2/10+48; data[4] = val_2%10+48; HAL_UART_Transmit (&huart1, data , sizeof (data), 10); data[0]=value[1]/10000+48; val_2 = value[1]%10000; data[1]=val_2/1000+48; val_2 = val_2%1000; data[2]=val_2/100+48; val_2 = val_2%100; data[3]=val_2/10+48; data[4] = val_2%10+48; HAL_UART_Transmit (&huart1, data , sizeof (data), 10); data[0]=value[2]/10000+48; val_2 = value[2]%10000; data[1]=val_2/1000+48; val_2 = val_2%1000; data[2]=val_2/100+48; val_2 = val_2%100; data[3]=val_2/10+48; data[4] = val_2%10+48; HAL_UART_Transmit (&huart1, data , sizeof (data), 10); HAL_Delay(1000); / USER CODE BEGIN 3 / } / USER CODE END 3 / } /* System Clock Configuration / void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct; RCC_ClkInitTypeDef RCC_ClkInitStruct; RCC_PeriphCLKInitTypeDef PeriphClkInitStruct; /Supply configuration update enable / MODIFY_REG(PWR->CR3, PWR_CR3_SCUEN, 0); /*Configure the main internal regulator output voltage / __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); while ((PWR->D3CR & (PWR_D3CR_VOSRDY)) != PWR_D3CR_VOSRDY) { } /*Macro to configure the PLL clock source / __HAL_RCC_PLL_PLLSOURCE_CONFIG(RCC_PLLSOURCE_HSI); /*Initializes the CPU, AHB and APB busses clocks / RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI; RCC_OscInitStruct.HSIState = RCC_HSI_DIV1; RCC_OscInitStruct.HSICalibrationValue = 16; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI; RCC_OscInitStruct.PLL.PLLM = 4; RCC_OscInitStruct.PLL.PLLN = 10; RCC_OscInitStruct.PLL.PLLP = 2; RCC_OscInitStruct.PLL.PLLQ = 2; RCC_OscInitStruct.PLL.PLLR = 2; RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_3; RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOMEDIUM; RCC_OscInitStruct.PLL.PLLFRACN = 0; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { _Error_Handler(__FILE__, __LINE__); } /*Initializes the CPU, AHB and APB busses clocks / RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK\|RCC_CLOCKTYPE_SYSCLK \|RCC_CLOCKTYPE_PCLK1\|RCC_CLOCKTYPE_PCLK2 \|RCC_CLOCKTYPE_D3PCLK1\|RCC_CLOCKTYPE_D1PCLK1; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV1; RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV1; RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV1; RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV1; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK) { _Error_Handler(__FILE__, __LINE__); } PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USART1\|RCC_PERIPHCLK_ADC; PeriphClkInitStruct.PLL2.PLL2M = 4; PeriphClkInitStruct.PLL2.PLL2N = 14; PeriphClkInitStruct.PLL2.PLL2P = 16; PeriphClkInitStruct.PLL2.PLL2Q = 2; PeriphClkInitStruct.PLL2.PLL2R = 2; PeriphClkInitStruct.PLL2.PLL2RGE = RCC_PLL2VCIRANGE_3; PeriphClkInitStruct.PLL2.PLL2VCOSEL = RCC_PLL2VCOWIDE; PeriphClkInitStruct.PLL2.PLL2FRACN = 0; PeriphClkInitStruct.Usart16ClockSelection = RCC_USART16CLKSOURCE_D2PCLK2; PeriphClkInitStruct.AdcClockSelection = RCC_ADCCLKSOURCE_PLL2; if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) { _Error_Handler(__FILE__, __LINE__); } /*Configure the Systick interrupt time / HAL_SYSTICK_Config(SystemCoreClock/1000); /*Configure the Systick / HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK); /* SysTick_IRQn interrupt configuration / HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0); } / ADC1 init function / static void MX_ADC1_Init(void) { ADC_MultiModeTypeDef multimode; ADC_ChannelConfTypeDef sConfig; /Common config / hadc1.Instance = ADC1; hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1; hadc1.Init.Resolution = ADC_RESOLUTION_16B; hadc1.Init.ScanConvMode = ADC_SCAN_ENABLE; hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV; hadc1.Init.LowPowerAutoWait = DISABLE; hadc1.Init.ContinuousConvMode = ENABLE; hadc1.Init.NbrOfConversion = 3; hadc1.Init.DiscontinuousConvMode = DISABLE; hadc1.Init.NbrOfDiscConversion = 1; hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START; hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; hadc1.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DR; hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED; hadc1.Init.LeftBitShift = ADC_LEFTBITSHIFT_NONE; hadc1.Init.BoostMode = DISABLE; hadc1.Init.OversamplingMode = DISABLE; if (HAL_ADC_Init(&hadc1) != HAL_OK) { _Error_Handler(__FILE__, __LINE__); } /*Configure the ADC multi-mode / multimode.Mode = ADC_MODE_INDEPENDENT; if (HAL_ADCEx_MultiModeConfigChannel(&hadc1, &multimode) != HAL_OK) { _Error_Handler(__FILE__, __LINE__); } /*Configure Regular Channel / sConfig.Channel = ADC_CHANNEL_6; sConfig.Rank = 1; sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5; sConfig.SingleDiff = ADC_SINGLE_ENDED; sConfig.OffsetNumber = ADC_OFFSET_NONE; sConfig.Offset = 0; if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) { _Error_Handler(__FILE__, __LINE__); } /*Configure Regular Channel / sConfig.Channel = ADC_CHANNEL_3; sConfig.Rank = 2; if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) { _Error_Handler(__FILE__, __LINE__); } /*Configure Regular Channel / sConfig.Channel = ADC_CHANNEL_5; sConfig.Rank = 3; if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) { _Error_Handler(__FILE__, __LINE__); } } /* USART1 init function / static void MX_USART1_UART_Init(void) { huart1.Instance = USART1; huart1.Init.BaudRate = 115200; huart1.Init.WordLength = UART_WORDLENGTH_7B; huart1.Init.StopBits = UART_STOPBITS_1; huart1.Init.Parity = UART_PARITY_NONE; huart1.Init.Mode = UART_MODE_TX_RX; huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart1.Init.OverSampling = UART_OVERSAMPLING_16; huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE; huart1.Init.Prescaler = UART_PRESCALER_DIV1; huart1.Init.FIFOMode = UART_FIFOMODE_DISABLE; huart1.Init.TXFIFOThreshold = UART_TXFIFO_THRESHOLD_1_8; huart1.Init.RXFIFOThreshold = UART_RXFIFO_THRESHOLD_1_8; huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT; if (HAL_UART_Init(&huart1) != HAL_OK) { _Error_Handler(__FILE__, __LINE__); } } /* * Enable DMA controller clock / static void MX_DMA_Init(void) { / DMA controller clock enable / __HAL_RCC_DMA1_CLK_ENABLE(); / DMA interrupt init / / DMA1_Stream0_IRQn interrupt configuration */ HAL_NVIC_SetPriority(DMA1_Stream0_IRQn, 0, 0); HAL_NVIC_EnableIRQ(DMA1_Stream0_IRQn); } 0
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