[STM32L4] STM32L4R5ZIT6用DMA把存储器里的数据发往串口的·问题

#include "main.h"

//#include "stm32l4xx_hal_usart.h"

/** @addtogroup STM32L4xx_HAL_Examples

  * @{

  */



/** @addtogroup DMA_FLASHToRAM

  * @{

  */

USART_HandleTypeDef UartHandle;

/* Private typedef -----------------------------------------------------------*/

/* Private define ------------------------------------------------------------*/

/* Private macro -------------------------------------------------------------*/

/* Private variables ---------------------------------------------------------*/

/* DMA Handle declaration */

DMA_HandleTypeDef     DmaHandle;



static const uint32_t aSRC_Const_Buffer[BUFFER_SIZE] =

{

  0x01020304, 0x05060708, 0x090A0B0C, 0x0D0E0F10,

  0x11121314, 0x15161718, 0x191A1B1C, 0x1D1E1F20,

  0x21222324, 0x25262728, 0x292A2B2C, 0x2D2E2F30,

  0x31323334, 0x35363738, 0x393A3B3C, 0x3D3E3F40,

  0x41424344, 0x45464748, 0x494A4B4C, 0x4D4E4F50,

  0x51525354, 0x55565758, 0x595A5B5C, 0x5D5E5F60,

  0x61626364, 0x65666768, 0x696A6B6C, 0x6D6E6F70,

  0x71727374, 0x75767778, 0x797A7B7C, 0x7D7E7F80

};

static const uint8_t Buffer[4]=

{

        0x55,0xaa,0x66,0x99

};

static uint32_t aDST_Buffer[BUFFER_SIZE];



static __IO uint32_t transferErrorDetected;    /* Set to 1 if an error transfer is detected */

static __IO uint32_t transferCompleteDetected; /* Set to 1 if transfer is correctly completed */



/* Private function prototypes -----------------------------------------------*/

static void DMA_Config(void);

static void SystemClock_Config(void);

static void Error_Handler(void);

static void TransferComplete(DMA_HandleTypeDef *DmaHandle);

static void TransferError(DMA_HandleTypeDef *DmaHandle);



/* Private functions ---------------------------------------------------------*/

static void DMA_Config(void)

{

//        DMA_InitTypeDef DMA_InitStructure;

  /*## -1- Enable DMA1 clock #################################################*/

  __HAL_RCC_DMA1_CLK_ENABLE();

        

  //DmaHandle.Instance=DMA1_Channel5;

        //HAL_DMA_DeInit(DMA1_Channel5;); // 初始化通道5

  /*##-2- Select the DMA functional Parameters ###############################*/

  DmaHandle.Init.Direction = DMA_MEMORY_TO_PERIPH ;          /* M2M transfer mode                */

  DmaHandle.Init.PeriphInc = DMA_PINC_DISABLE;               /* Peripheral increment mode Enable */

        //DmaHandle.Init.PeriphInc = DMA_PINC_DISABLE;      

  DmaHandle.Init.MemInc = DMA_MINC_ENABLE;                  /* Memory increment mode Enable     */

        //DmaHandle.Init.MemInc = DMA_MINC_DISABLE;  

//  DmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD; /* Peripheral data alignment : Word */

//  DmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;    /* memory data alignment : Word     */

//  DmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD; /* Peripheral data alignment : Word */

//        

//  DmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;    /* memory data alignment : BYTE     */

        DmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE  ; /* Peripheral data alignment : BYTE */

  DmaHandle.Init.MemDataAlignment = DMA_PDATAALIGN_BYTE  ;    /* memory data alignment : Word     */

        DmaHandle.Init.Mode = DMA_NORMAL;                         /* Normal DMA mode                  */

  DmaHandle.Init.Priority = DMA_PRIORITY_HIGH;              /* priority level : high            */



  /*##-3- Select the DMA instance to be used for the transfer : DMA1_Channel1 #*/

  DmaHandle.Instance = DMA_INSTANCE;



  /*##-4- Initialize the DMA channel ##########################################*/

  if (HAL_DMA_Init(&DmaHandle) != HAL_OK)

  {

    /* Initialization Error */

    Error_Handler();

  }

  

  /*##-5- Select Callbacks functions called after Transfer complete and Transfer error */

  HAL_DMA_RegisterCallback(&DmaHandle, HAL_DMA_XFER_CPLT_CB_ID, TransferComplete);

  HAL_DMA_RegisterCallback(&DmaHandle, HAL_DMA_XFER_ERROR_CB_ID, TransferError);



  /*##-6- Configure NVIC for DMA transfer complete/error interrupts ##########*/

  /* Set Interrupt Group Priority */

  //HAL_NVIC_SetPriority(DMA_INSTANCE_IRQ, 0, 0);



  /* Enable the DMA STREAM global Interrupt */

  //HAL_NVIC_EnableIRQ(DMA_INSTANCE_IRQ);

        

        HAL_NVIC_SetPriority(DMA1_Channel7_IRQn, 0, 0);

  HAL_NVIC_EnableIRQ(DMA1_Channel7_IRQn);

  /*##-7- Start the DMA transfer using the interrupt mode ####################*/

  /* Configure the source, destination and buffer size DMA fields and Start DMA Channel transfer */

  /* Enable All the DMA interrupts */

  if (HAL_DMA_Start_IT(&DmaHandle, (uint32_t)&aSRC_Const_Buffer, (uint32_t)&UartHandle.Instance->TDR, 4) != HAL_OK)

  {

    /* Transfer Error */

    Error_Handler();

  }

}

static void MX_GPIO_Init(void)

{

  GPIO_InitTypeDef GPIO_InitStruct = {0};



  /* GPIO Ports Clock Enable */

  

        __HAL_RCC_GPIOA_CLK_ENABLE();

        __HAL_RCC_USART2_CLK_ENABLE();

 



  /*Configure GPIO pins : PC13 PC14 PC15 */

  GPIO_InitStruct.Pin = GPIO_PIN_2;

  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

  GPIO_InitStruct.Pull = GPIO_NOPULL;

  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;

  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

        

        GPIO_InitStruct.Pin = GPIO_PIN_3;

  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;

  GPIO_InitStruct.Pull = GPIO_NOPULL;

  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;

  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);



}



/**

  * [url=/u/brief]@brief[/url]  Main program

  * @param  None

  * @retval None

  */

int main(void)

{

        unsigned int i;

  /* STM32L4xx HAL library initialization:

       - Configure the Flash prefetch

       - Systick timer is configured by default as source of time base, but user 

         can eventually implement his proper time base source (a general purpose 

         timer for example or other time source), keeping in mind that Time base 

         duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and 

         handled in milliseconds basis.

       - Set NVIC Group Priority to 4

       - Low Level Initialization

     */

  HAL_Init();



  /* Configure the system clock to 120 MHz */

  SystemClock_Config();



  /* Initialize LED */

  BSP_LED_Init(LED1);



  /* Set to 1 if an transfer error is detected */

  transferErrorDetected = 0;

  transferCompleteDetected = 0;



  /* Configure and enable the DMA channel for Memory to Memory transfer */

  MX_GPIO_Init();



  /* Suspend Tick increment to prevent wakeup by Systick interrupt.         */

  /* Otherwise the Systick interrupt will wake up the device within 1ms     */

  /* (HAL time base).                                                       */

//  HAL_SuspendTick();



//  /* Enter sleep mode and wait for DMA interrupt */

//  HAL_PWR_EnterSLEEPMode(PWR_LOWPOWERREGULATOR_ON, PWR_SLEEPENTRY_WFI);



//  /* Resume Tick interrupt if disabled prior to SLEEP mode entry */

//  HAL_ResumeTick();

        DMA_Config();

        

        UartHandle.Instance        = USARTx;



  UartHandle.Init.BaudRate   = 9600;

  UartHandle.Init.WordLength = UART_WORDLENGTH_8B;

  UartHandle.Init.StopBits   = UART_STOPBITS_1;

  UartHandle.Init.Parity     = UART_PARITY_NONE;

  //UartHandle.Init.HwFlowCtl  = UART_HWCONTROL_NONE;

        //UartHandle.Init.HwFlowCtl  = UART_HWCONTROL_NONE;

        //UartHandle.Init.

  UartHandle.Init.Mode       = UART_MODE_TX_RX;

        

  //UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;

  if(HAL_USART_DeInit(&UartHandle) != HAL_OK)

  {

    Error_Handler();

  }  

  if(HAL_USART_Init(&UartHandle) != HAL_OK)

  {

    Error_Handler();

  }

  



         HAL_USART_Transmit_DMA(&UartHandle, (uint8_t *)Buffer, 4);

  /* Infinite loop */

  while (1)

  {

                //

                HAL_USART_Transmit(&UartHandle, (uint8_t *)Buffer, 4,0);

                for(i=0;i<60000;i++);

                //HAL_Delay(1000);

//    if (transferErrorDetected == 1)

//    {

//      /* Toggle LED1 with a period of 200 ms */

//      BSP_LED_Toggle(LED1);

//      HAL_Delay(200);

//    }

//    if (transferCompleteDetected == 1)

//    {

//      /* Turn LED1 on*/

//      BSP_LED_On(LED1);

//      transferCompleteDetected = 0;

//    }

  }

}



/**

  * @brief  Configure the DMA controller according to the Channel parameters

  *         defined in main.h file

  * [url=/u/NOTE]@NOTE[/url]  This function is used to :

  *        -1- Enable DMA1 clock

  *        -2- Select the DMA functional Parameters

  *        -3- Select the DMA instance to be used for the transfer

  *        -4- Select Callbacks functions called after Transfer complete and

               Transfer error interrupt detection

  *        -5- Initialize the DMA channel

  *        -6- Configure NVIC for DMA transfer complete/error interrupts

  *        -7- Start the DMA transfer using the interrupt mode

  * @param  None

  * @retval None

  */

//static void DMA_Config(void)

//{

//  /*## -1- Enable DMA1 clock #################################################*/

//  __HAL_RCC_DMA1_CLK_ENABLE();



//  /*##-2- Select the DMA functional Parameters ###############################*/

//  DmaHandle.Init.Direction = DMA_MEMORY_TO_PERIPH;          /* M2M transfer mode                */

//  DmaHandle.Init.PeriphInc = DMA_PINC_DISABLE;               /* Peripheral increment mode Enable */

//  DmaHandle.Init.MemInc = DMA_MINC_ENABLE;                  /* Memory increment mode Enable     */

////  DmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD; /* Peripheral data alignment : Word */

////  DmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;    /* memory data alignment : Word     */

////        DmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD ; /* Peripheral data alignment : Word */

////  DmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD ;    /* memory data alignment : Word     */

//        DmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE   ; /* Peripheral data alignment : Word */

//  DmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE  ;    /* memory data alignment : Word     */

//  DmaHandle.Init.Mode = DMA_NORMAL;                         /* Normal DMA mode                  */

//  DmaHandle.Init.Priority = DMA_PRIORITY_HIGH;              /* priority level : high            */



//  /*##-3- Select the DMA instance to be used for the transfer : DMA1_Channel1 #*/

//  DmaHandle.Instance = DMA_INSTANCE;



//  /*##-4- Initialize the DMA channel ##########################################*/

//  if (HAL_DMA_Init(&DmaHandle) != HAL_OK)

//  {

//    /* Initialization Error */

//    Error_Handler();

//  }



//  /*##-5- Select Callbacks functions called after Transfer complete and Transfer error */

//  HAL_DMA_RegisterCallback(&DmaHandle, HAL_DMA_XFER_CPLT_CB_ID, TransferComplete);

//  HAL_DMA_RegisterCallback(&DmaHandle, HAL_DMA_XFER_ERROR_CB_ID, TransferError);

//  

//  /*##-6- Configure NVIC for DMA transfer complete/error interrupts ##########*/

//  /* Set Interrupt Group Priority */

//  HAL_NVIC_SetPriority(DMA_INSTANCE_IRQ, 0, 0);



//  /* Enable the DMA Channel global Interrupt */

//  HAL_NVIC_EnableIRQ(DMA_INSTANCE_IRQ);



//  /*##-7- Start the DMA transfer using the interrupt mode ####################*/

//  /* Configure the source, destination and buffer size DMA fields and Start DMA Channel transfer */

//  /* Enable All the DMA interrupts */

////  if (HAL_DMA_Start_IT(&DmaHandle, (uint32_t)&aSRC_Const_Buffer, (uint32_t)&aDST_Buffer, BUFFER_SIZE) != HAL_OK)

////  {

////    /* Transfer Error */

////    Error_Handler();

////  }

//}



/**

  * @brief  DMA conversion complete callback

  * @note   This function is executed when the transfer complete interrupt

  *         is generated

  * @retval None

  */

static void TransferComplete(DMA_HandleTypeDef *DmaHandle)

{

  transferCompleteDetected = 1;

}



/**

  * @brief  DMA conversion error callback

  * @note   This function is executed when the transfer error interrupt

  *         is generated during DMA transfer

  * @retval None

  */

static void TransferError(DMA_HandleTypeDef *DmaHandle)

{

  transferErrorDetected = 1;

}



/**

  * @brief  System Clock Configuration

  *         The system Clock is configured as follows :

  *            System Clock source            = PLL (MSI)

  *            SYSCLK(Hz)                     = 120000000

  *            HCLK(Hz)                       = 120000000

  *            AHB Prescaler                  = 1

  *            APB1 Prescaler                 = 1

  *            APB2 Prescaler                 = 1

  *            MSI Frequency(Hz)              = 4000000

  *            PLL_M                          = 1

  *            PLL_N                          = 60

  *            PLL_Q                          = 2

  *            PLL_R                          = 2

  *            PLL_P                          = 7

  *            Flash Latency(WS)              = 5

  * @param  None

  * @retval None

  */

void SystemClock_Config(void)

{

  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  RCC_OscInitTypeDef RCC_OscInitStruct = {0};

  

  /* Enable voltage range 1 boost mode for frequency above 80 Mhz */

  __HAL_RCC_PWR_CLK_ENABLE();

  HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1_BOOST);

  __HAL_RCC_PWR_CLK_DISABLE();



  /* Enable MSI Oscillator and activate PLL with MSI as source */

  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;

  RCC_OscInitStruct.MSIState = RCC_MSI_ON;

  RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT;

  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI;

  RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_6;

  RCC_OscInitStruct.PLL.PLLM = 1;

  RCC_OscInitStruct.PLL.PLLN = 60;

  RCC_OscInitStruct.PLL.PLLR = 2;

  RCC_OscInitStruct.PLL.PLLQ = 2;

  RCC_OscInitStruct.PLL.PLLP = 7;

  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)

  {

    /* Initialization Error */

    while(1);

  }

  

  /* To avoid undershoot due to maximum frequency, select PLL as system clock source */

  /* with AHB prescaler divider 2 as first step */

  RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);

  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;

  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV2;

  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;  

  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;  

  if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK)

  {

    /* Initialization Error */

    while(1);

  }



  /* AHB prescaler divider at 1 as second step */

  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK;

  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

  if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)

  {

    /* Initialization Error */

    while(1);

  }

}



/**

  * @brief  This function is executed in case of error occurrence.

  * @param  None

  * @retval None

  */

static void Error_Handler(void)

{

  while (1)

  {

    /* Toggle LED1 with a period of 1 s */

    BSP_LED_Toggle(LED1);

    HAL_Delay(1000);

  }

}





#ifdef  USE_FULL_ASSERT

/**

  * @brief  Reports the name of the source file and the source line number

  *         where the assert_param error has occurred.

  * @param  file: pointer to the source file name

  * @param  line: assert_param error line source number

  * @retval None

  */

void assert_failed(uint8_t *file, uint32_t line)

{

  /* User can add his own implementation to report the file name and line number,

     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */



  /* Infinite loop */

  while (1)

  {

  }

}

#endif



/**

  * @}

  */



/**

  * @}

  */