int/nucleo-f767-blinky/cube/nucleo-f767-blinky/Src/usart.c

   1 /**
   2   ******************************************************************************
   3   * File Name          : USART.c
   4   * Description        : This file provides code for the configuration
   5   *                      of the USART instances.
   6   ******************************************************************************
   7   *
   8   * COPYRIGHT(c) 2016 STMicroelectronics
   9   *
  10   * Redistribution and use in source and binary forms, with or without modification,
  11   * are permitted provided that the following conditions are met:
  12   *   1. Redistributions of source code must retain the above copyright notice,
  13   *      this list of conditions and the following disclaimer.
  14   *   2. Redistributions in binary form must reproduce the above copyright notice,
  15   *      this list of conditions and the following disclaimer in the documentation
  16   *      and/or other materials provided with the distribution.
  17   *   3. Neither the name of STMicroelectronics nor the names of its contributors
  18   *      may be used to endorse or promote products derived from this software
  19   *      without specific prior written permission.
  20   *
  21   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  22   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  24   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  25   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  27   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  28   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  29   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31   *
  32   ******************************************************************************
  33   */
  34
  35 /* Includes ------------------------------------------------------------------*/
  36 #include "usart.h"
  37
  38 #include "gpio.h"
  39 #include "dma.h"
  40
  41 /* USER CODE BEGIN 0 */
  42
  43 /* USER CODE END 0 */
  44
  45 UART_HandleTypeDef huart3;
  46 DMA_HandleTypeDef hdma_usart3_tx;
  47
  48 /* USART3 init function */
  49
  50 void MX_USART3_UART_Init(void)
  51 {
  52
  53   huart3.Instance = USART3;
  54   huart3.Init.BaudRate = 9600;
  55   huart3.Init.WordLength = UART_WORDLENGTH_8B;
  56   huart3.Init.StopBits = UART_STOPBITS_1;
  57   huart3.Init.Parity = UART_PARITY_NONE;
  58   huart3.Init.Mode = UART_MODE_TX_RX;
  59   huart3.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  60   huart3.Init.OverSampling = UART_OVERSAMPLING_16;
  61   huart3.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  62   huart3.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  63   if (HAL_UART_Init(&huart3) != HAL_OK)
  64   {
  65     Error_Handler();
  66   }
  67
  68 }
  69
  70 void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
  71 {
  72
  73   GPIO_InitTypeDef GPIO_InitStruct;
  74   if(uartHandle->Instance==USART3)
  75   {
  76   /* USER CODE BEGIN USART3_MspInit 0 */
  77
  78   /* USER CODE END USART3_MspInit 0 */
  79     /* Peripheral clock enable */
  80     __HAL_RCC_USART3_CLK_ENABLE();
  81
  82     /**USART3 GPIO Configuration
  83     PD8     ------> USART3_TX
  84     PD9     ------> USART3_RX
  85     */
  86     GPIO_InitStruct.Pin = STLK_RX_Pin|STLK_TX_Pin;
  87     GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
  88     GPIO_InitStruct.Pull = GPIO_PULLUP;
  89     GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
  90     GPIO_InitStruct.Alternate = GPIO_AF7_USART3;
  91     HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
  92
  93     /* Peripheral DMA init*/
  94
  95     hdma_usart3_tx.Instance = DMA1_Stream3;
  96     hdma_usart3_tx.Init.Channel = DMA_CHANNEL_4;
  97     hdma_usart3_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
  98     hdma_usart3_tx.Init.PeriphInc = DMA_PINC_DISABLE;
  99     hdma_usart3_tx.Init.MemInc = DMA_MINC_ENABLE;
 100     hdma_usart3_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
 101     hdma_usart3_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
 102     hdma_usart3_tx.Init.Mode = DMA_NORMAL;
 103     hdma_usart3_tx.Init.Priority = DMA_PRIORITY_LOW;
 104     hdma_usart3_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
 105     if (HAL_DMA_Init(&hdma_usart3_tx) != HAL_OK)
 106     {
 107       Error_Handler();
 108     }
 109
 110     __HAL_LINKDMA(uartHandle,hdmatx,hdma_usart3_tx);
 111
 112     /* Peripheral interrupt init */
 113     HAL_NVIC_SetPriority(USART3_IRQn, 2, 0);
 114     HAL_NVIC_EnableIRQ(USART3_IRQn);
 115   /* USER CODE BEGIN USART3_MspInit 1 */
 116
 117   /* USER CODE END USART3_MspInit 1 */
 118   }
 119 }
 120
 121 void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
 122 {
 123
 124   if(uartHandle->Instance==USART3)
 125   {
 126   /* USER CODE BEGIN USART3_MspDeInit 0 */
 127
 128   /* USER CODE END USART3_MspDeInit 0 */
 129     /* Peripheral clock disable */
 130     __HAL_RCC_USART3_CLK_DISABLE();
 131
 132     /**USART3 GPIO Configuration
 133     PD8     ------> USART3_TX
 134     PD9     ------> USART3_RX
 135     */
 136     HAL_GPIO_DeInit(GPIOD, STLK_RX_Pin|STLK_TX_Pin);
 137
 138     /* Peripheral DMA DeInit*/
 139     HAL_DMA_DeInit(uartHandle->hdmatx);
 140
 141     /* Peripheral interrupt Deinit*/
 142     HAL_NVIC_DisableIRQ(USART3_IRQn);
 143
 144   }
 145   /* USER CODE BEGIN USART3_MspDeInit 1 */
 146
 147   /* USER CODE END USART3_MspDeInit 1 */
 148 }
 149
 150 /* USER CODE BEGIN 1 */
 151
 152 /* USER CODE END 1 */
 153
 154 /**
 155   * @}
 156   */
 157
 158 /**
 159   * @}
 160   */
 161
 162 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/