F439 DMA+ADC 中断问题，求助各位大神

钱队长 · 发表于 2015-6-12 08:46:14

[mw_shl_code=c,true]#include "stm324x9i_evhal_adsample.h" #include "stm32f439xx.h" #include "stm32f4xx_hal_rcc.h" #include "stm32f4xx_hal_gpio.h" #include "stm32f4xx_hal_dma.h" #include "stm32f4xx_hal_cortex.h" /* Constant definitions */ #define NUM 11 // Number of ADC channels; #define coef_a 0.5 // Useful coefficient for adFilter; /* Initiliazes */ int pre_value = 0; /* ADC handler declaration */ ADC_HandleTypeDef AdcHandle; DMA_HandleTypeDef dma; /* Defines varibles of channel configure */ ADC_ChannelConfTypeDef sConfig; /* Fuctions for Initializing and configuring*/ HAL_StatusTypeDef GpioInit(); HAL_StatusTypeDef DmaInit(); HAL_StatusTypeDef AdcInit(); HAL_StatusTypeDef ChannelConfigure(); /* CallBack Fuction */ void transCompleteCallback(DMA_HandleTypeDef *hdma); /* function prototypes */ uint16_t adFliter(uint16_t newValue); uint16_t GetRealValue(adSamChan *asc); /* Arrays used to get converted values */ static uint16_t adValue[NUM]; // Array to load values of adsample static uint16_t fliterValue[NUM]; // Array to load values of fliter //static uint16_t realValue[NUM]; // Array to load real value of each /* AdSample Initializing */ HAL_StatusTypeDef AdSamInit() { /* RCC clock enable */ __HAL_RCC_DMA2_CLK_ENABLE(); // Enable DMA_2 Clock __HAL_RCC_ADC1_CLK_ENABLE(); // Enable ADC1 Clock /* Initializes Gpio */ GpioInit(); __HAL_DMA_DISABLE(&dma); /* Initializes DMA */ DmaInit(); /*Configure NVIC for DMA transfer complete interrupts */ HAL_NVIC_SetPriority(DMA2_Stream0_IRQn, 0, 0); HAL_NVIC_EnableIRQ(DMA2_Stream0_IRQn); __HAL_DMA_ENABLE_IT(&dma,DMA_IT_TC); __HAL_DMA_ENABLE(&dma); /* Initializes ADC */ AdcInit(); /* Configures ADC Channels */ ChannelConfigure(); /*Enable ADC's DMA mode*/ AdcHandle.Instance->CR2 |= ADC_CR2_DMA; /*Enable conversion*/ HAL_ADC_Start(&AdcHandle); return HAL_OK; } HAL_StatusTypeDef GpioInit() { /*Configures GPIO*/ GPIO_InitTypeDef gpio; gpio.Mode = GPIO_MODE_ANALOG; // Configures analog output gpio.Speed = GPIO_SPEED_MEDIUM; // Configures GPIO speed /*Configures GPIOA*/ __HAL_RCC_GPIOA_CLK_ENABLE(); // Enable GPIOB Clock gpio.Pin = GPIO_PIN_0; // Configures ADC1_channel_0； HAL_GPIO_Init(GPIOA,&gpio); // Initializes GPIOA /*Configures GPIOB*/ __HAL_RCC_GPIOB_CLK_ENABLE(); // Enable GPIOB Clock gpio.Pin = GPIO_PIN_0|GPIO_PIN_1; // Configure ADC1_channel_8,channel_9； HAL_GPIO_Init(GPIOB,&gpio); // Initializes GPIOB /*Configures GPIOC*/ __HAL_RCC_GPIOC_CLK_ENABLE(); // Enable GPIOC Clock gpio.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5; // Configures ADC1 from channel_10 to channel_15 HAL_GPIO_Init(GPIOC,&gpio); // Initializes GPIOC return HAL_OK; } HAL_StatusTypeDef DmaInit() { HAL_DMA_DeInit(&dma); dma.Init.Channel = DMA_CHANNEL_0; // Select DMA channel_0 dma.Init.Direction = DMA_PERIPH_TO_MEMORY; // Select the direction of transmission dma.Init.PeriphInc = DMA_PINC_DISABLE; // Keeping Periph data_address after each transmission dma.Init.MemInc = DMA_MINC_ENABLE; // Retreating Memory data_address after each transmission dma.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD; // Set MemoryData HALFWPRD dma.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD; // Set PeriphData HALFWORD dma.Init.Mode = DMA_CIRCULAR ; // Set conversion mode dma.Init.Priority = DMA_PRIORITY_HIGH; // Set DMA Priority dma.Instance = DMA2_Stream0; // Set base_address DM2_STream0 dma.Instance->NDTR = 11; // Set the number of datas transfered dma.Instance->CR &= (uint32_t)(~DMA_SxCR_DBM); // clear DBM bit dma.Instance->

AR = (uint32_t)&(ADC1->DR); // Set source address dma.Instance->M0AR = (uint32_t)&adValue; // Set target address dma.XferCpltCallback = transCompleteCallback; HAL_DMA_Init(&dma); // Initializes DMA return HAL_OK; } HAL_StatusTypeDef AdcInit() { HAL_ADC_DeInit(&AdcHandle); AdcHandle.Instance= ADC1; AdcHandle.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2; // Configures ADC ClockPrescaler AdcHandle.Init.Resolution = ADC_RESOLUTION_12B; // Configures ADC Resolution AdcHandle.Init.ScanConvMode = ENABLE; // Enable scan mode AdcHandle.Init.ContinuousConvMode = ENABLE; // Enable ContinuousConvMode AdcHandle.Init.DiscontinuousConvMode = DISABLE; AdcHandle.Init.NbrOfDiscConversion = 0; // AdcHandle.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; // AdcHandle.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T1_CC1; AdcHandle.Init.DataAlign = ADC_DATAALIGN_RIGHT; // Data justified right AdcHandle.Init.NbrOfConversion = NUM; // Configure number of conversion AdcHandle.Init.DMAContinuousRequests = ENABLE; // Enable DMA continuous requests AdcHandle.Init.EOCSelection = DISABLE; HAL_ADC_Init(&AdcHandle); return HAL_OK; } HAL_StatusTypeDef ChannelConfigure() { sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES; sConfig.Offset = 0; sConfig.Rank = 1; sConfig.Channel =ADC_CHANNEL_0; HAL_ADC_ConfigChannel(&AdcHandle, &sConfig); sConfig.Rank = 2; sConfig.Channel =ADC_CHANNEL_8; HAL_ADC_ConfigChannel(&AdcHandle, &sConfig); sConfig.Rank = 3; sConfig.Channel =ADC_CHANNEL_9; HAL_ADC_ConfigChannel(&AdcHandle, &sConfig); sConfig.Rank = 4; sConfig.Channel =ADC_CHANNEL_10; HAL_ADC_ConfigChannel(&AdcHandle, &sConfig); sConfig.Rank = 5; sConfig.Channel =ADC_CHANNEL_11; HAL_ADC_ConfigChannel(&AdcHandle, &sConfig); sConfig.Rank = 6; sConfig.Channel =ADC_CHANNEL_12; HAL_ADC_ConfigChannel(&AdcHandle, &sConfig); sConfig.Rank = 7; sConfig.Channel =ADC_CHANNEL_13; HAL_ADC_ConfigChannel(&AdcHandle, &sConfig); sConfig.Rank = 8; sConfig.Channel =ADC_CHANNEL_14; HAL_ADC_ConfigChannel(&AdcHandle, &sConfig); sConfig.Rank = 9; sConfig.Channel =ADC_CHANNEL_15; HAL_ADC_ConfigChannel(&AdcHandle, &sConfig); /*Channel for temperture*/ sConfig.Rank = 10; sConfig.Channel =ADC_CHANNEL_16; HAL_ADC_ConfigChannel(&AdcHandle, &sConfig); /*Channel for Vreinf*/ sConfig.Rank = 11; sConfig.Channel =ADC_CHANNEL_17; HAL_ADC_ConfigChannel(&AdcHandle, &sConfig); return HAL_OK; } void transCompleteCallback(DMA_HandleTypeDef *hdma) // CallBack fuction of transfer complete { // AdcHandle.Instance->CR2 &= ~ADC_CR2_SWSTART; for(int i =0;i <11;i++) { fliterValue = adValue; fliterValue = adFliter(fliterValue); } }[/mw_shl_code]

上面的 F439的一段ADC+DMA 采样的程序，在DMA传输完成中断中，进行数据处理，现在是DMA只会进入一次中断，在中段函数内设置断点，一直下一步，跳出后无法再进入中断函数，因为DMA是循环模式，理论上传输中断函数是一直能够进入的，昨天调试的时候还好好的，不知道误动了哪些地方之后，请问代码中有哪些地方出错了吗？谢谢各位大哥，小弟感激不尽