text: /**
    ******************************************************************************
    * @file    I2C/I2C_TwoBoards_ComDMA/Inc/main.h 
    * @author  MCD Application Team
    * @brief   Header for main.c module
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
    *
    * Redistribution and use in source and binary forms, with or without modification,
    * are permitted provided that the following conditions are met:
    *   1. Redistributions of source code must retain the above copyright notice,
    *      this list of conditions and the following disclaimer.
    *   2. Redistributions in binary form must reproduce the above copyright notice,
    *      this list of conditions and the following disclaimer in the documentation
    *      and/or other materials provided with the distribution.
    *   3. Neither the name of STMicroelectronics nor the names of its contributors
    *      may be used to endorse or promote products derived from this software
    *      without specific prior written permission.
    *
    * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
    * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
    * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    *
    ******************************************************************************
    */
    
  /* Define to prevent recursive inclusion -------------------------------------*/
  #ifndef __MAIN_H
  #define __MAIN_H
  
  /* Includes ------------------------------------------------------------------*/
  #include "stm32l4xx_hal.h"
  #include "stm32l476g_eval.h"
  
  /* Exported types ------------------------------------------------------------*/
  /* Exported constants --------------------------------------------------------*/
  /* User can use this section to tailor I2Cx/I2Cx instance used and associated
     resources */
  /* Definition for I2Cx clock resources */
  #define I2Cx                            I2C3
  #define RCC_PERIPHCLK_I2Cx              RCC_PERIPHCLK_I2C3
  #define RCC_I2CxCLKSOURCE_SYSCLK        RCC_I2C3CLKSOURCE_SYSCLK
  #define I2Cx_CLK_ENABLE()               __HAL_RCC_I2C3_CLK_ENABLE()
  #define I2Cx_SDA_GPIO_CLK_ENABLE()      __HAL_RCC_GPIOC_CLK_ENABLE()
  #define I2Cx_SCL_GPIO_CLK_ENABLE()      __HAL_RCC_GPIOC_CLK_ENABLE() 
  #define I2Cx_DMA_CLK_ENABLE()           __HAL_RCC_DMA1_CLK_ENABLE()
  
  #define I2Cx_FORCE_RESET()              __HAL_RCC_I2C3_FORCE_RESET()
  #define I2Cx_RELEASE_RESET()            __HAL_RCC_I2C3_RELEASE_RESET()
  
  /* Definition for I2Cx Pins */
  #define I2Cx_SCL_PIN                    GPIO_PIN_0
  #define I2Cx_SCL_GPIO_PORT              GPIOC
  #define I2Cx_SDA_PIN                    GPIO_PIN_1
  #define I2Cx_SDA_GPIO_PORT              GPIOC
  #define I2Cx_SCL_SDA_AF                 GPIO_AF4_I2C3
  
  /* Definition for I2Cx's NVIC */
  #define I2Cx_EV_IRQn                    I2C3_EV_IRQn
  #define I2Cx_ER_IRQn                    I2C3_ER_IRQn
  #define I2Cx_EV_IRQHandler              I2C3_EV_IRQHandler
  #define I2Cx_ER_IRQHandler              I2C3_ER_IRQHandler
  
  /* Definition for I2Cx's DMA */
  #define I2Cx_DMA                        DMA1   
  #define I2Cx_DMA_INSTANCE_TX            DMA1_Channel2
  #define I2Cx_DMA_INSTANCE_RX            DMA1_Channel3
  #define I2Cx_DMA_REQUEST_TX             DMA_REQUEST_3
  #define I2Cx_DMA_REQUEST_RX             DMA_REQUEST_3
  
  /* Definition for I2Cx's DMA NVIC */
  #define I2Cx_DMA_TX_IRQn                DMA1_Channel2_IRQn
  #define I2Cx_DMA_RX_IRQn                DMA1_Channel3_IRQn
  #define I2Cx_DMA_TX_IRQHandler          DMA1_Channel2_IRQHandler
  #define I2Cx_DMA_RX_IRQHandler          DMA1_Channel3_IRQHandler
  
  /* Size of Transmission buffer */
  #define TXBUFFERSIZE                      (COUNTOF(aTxBuffer) - 1)
  /* Size of Reception buffer */
  #define RXBUFFERSIZE                      TXBUFFERSIZE
  
  /* Exported macro ------------------------------------------------------------*/
  #define COUNTOF(__BUFFER__)   (sizeof(__BUFFER__) / sizeof(*(__BUFFER__)))
  /* Exported functions ------------------------------------------------------- */
  
  #endif /* __MAIN_H */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  