/* USER CODE BEGIN Header */

/**

  ******************************************************************************

  * @file           : main.c

  * @brief          : Main program body

  ******************************************************************************

  * @attention

  *

  *

© Copyright (c) 2020 STMicroelectronics.

  * All rights reserved.

  *

  * 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 ---------------------------------------------------------*/

UART_HandleTypeDef huart1;

DMA_HandleTypeDef hdma_usart1_rx;

DMA_HandleTypeDef hdma_usart1_tx;

/* 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_USART1_UART_Init(void);

/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/

/* USER CODE BEGIN 0 */

// 缓冲数组

uint8_t tx_buff[] = {0,1,2,3,4,5,6,7,8,9};

uint8_t rx_buff[10] ;

volatile uint8_t rx_len=0;

volatile uint8_t recv_end_flag=0;

uint8_t rx_buffer[200];

/* 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_USART1_UART_Init();

  /* USER CODE BEGIN 2 */

    // 开启传输

HAL_UART_Receive_DMA(&huart1,rx_buff,10);

HAL_UART_Transmit_DMA(&huart1,tx_buff,10);

  /* USER CODE END 2 */

  /* Infinite loop */

  /* USER CODE BEGIN WHILE */

  while (1)

  {

    /* USER CODE END WHILE */

//if(recv_end_flag ==1)

//        {

//        //    printf("rx_len=%drn",rx_len);//打印接收长度

            HAL_UART_Transmit(&huart1,rx_buffer, rx_len,10); 

//            for(uint8_t i=0;i//                {

//                    rx_buffer[i]=0;//清接收缓存

//                }

//            rx_len=0;//清除计数

//            recv_end_flag=0;//清除接收结束标志位

//        }

        HAL_UART_Receive_DMA(&huart1,rx_buffer,10);//重新打开DMA接收        

  HAL_Delay(1000);

    /* 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};

  /** Configure the main internal regulator output voltage

  */

  __HAL_RCC_PWR_CLK_ENABLE();

  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

  /** Initializes the RCC Oscillators according to the specified parameters

  * in the RCC_OscInitTypeDef structure.

  */

  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;

  RCC_OscInitStruct.HSEState = RCC_HSE_ON;

  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;

  RCC_OscInitStruct.PLL.PLLM = 15;

  RCC_OscInitStruct.PLL.PLLN = 216;

  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;

  RCC_OscInitStruct.PLL.PLLQ = 4;

  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)

  {

    Error_Handler();

  }

  /** Activate the Over-Drive mode

  */

  if (HAL_PWREx_EnableOverDrive() != HAL_OK)

  {

    Error_Handler();

  }

  /** Initializes the CPU, AHB and APB buses clocks

  */

  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK

                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;

  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;

  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;

  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;

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

  {

    Error_Handler();

  }

}

/**

  * @brief USART1 Initialization Function

  * @param None

  * @retval None

  */

static void MX_USART1_UART_Init(void)

{

  /* USER CODE BEGIN USART1_Init 0 */

  /* USER CODE END USART1_Init 0 */

  /* USER CODE BEGIN USART1_Init 1 */

  /* USER CODE END USART1_Init 1 */

  huart1.Instance = USART1;

  huart1.Init.BaudRate = 115200;

  huart1.Init.WordLength = UART_WORDLENGTH_8B;

  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;

  if (HAL_UART_Init(&huart1) != HAL_OK)

  {

    Error_Handler();

  }

  /* USER CODE BEGIN USART1_Init 2 */

// 开启中断

__HAL_UART_ENABLE_IT( &huart1,UART_IT_IDLE);

    HAL_UART_Receive_DMA(&huart1,rx_buff,10);

  /* USER CODE END USART1_Init 2 */

}

/**

  * Enable DMA controller clock

  */

static void MX_DMA_Init(void)

{

  /* DMA controller clock enable */

  __HAL_RCC_DMA2_CLK_ENABLE();

  /* DMA interrupt init */

  /* DMA2_Stream2_IRQn interrupt configuration */

  HAL_NVIC_SetPriority(DMA2_Stream2_IRQn, 0, 0);

  HAL_NVIC_EnableIRQ(DMA2_Stream2_IRQn);

  /* DMA2_Stream7_IRQn interrupt configuration */

  HAL_NVIC_SetPriority(DMA2_Stream7_IRQn, 0, 0);

  HAL_NVIC_EnableIRQ(DMA2_Stream7_IRQn);

}

/**

  * @brief GPIO Initialization Function

  * @param None

  * @retval None

  */

static void MX_GPIO_Init(void)

{

  /* GPIO Ports Clock Enable */

  __HAL_RCC_GPIOH_CLK_ENABLE();

  __HAL_RCC_GPIOA_CLK_ENABLE();

}

/* USER CODE BEGIN 4 */

void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)

{

    __NOP();

 

}

/* USER CODE END 4 */

/**

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

  * @retval None

  */

void Error_Handler(void)

{

  /* USER CODE BEGIN Error_Handler_Debug */

  /* User can add his own implementation to report the HAL error return state */

  __disable_irq();

  while (1)

  {

  }

  /* USER CODE END Error_Handler_Debug */

}

#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 CODE BEGIN 6 */

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

     ex: printf("Wrong parameters value: file %s on line %drn", file, line) */

  /* USER CODE END 6 */

}

#endif /* USE_FULL_ASSERT */

// ok

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/