source: trunk/fw_g473rct/Core/Src/fdcan.c

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file    fdcan.c
  * @brief   This file provides code for the configuration
  *          of the FDCAN instances.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2025 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "fdcan.h"

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

FDCAN_HandleTypeDef hfdcan2;
FDCAN_HandleTypeDef hfdcan3;

/* FDCAN2 init function */
void MX_FDCAN2_Init(void)
{

  /* USER CODE BEGIN FDCAN2_Init 0 */

  /* USER CODE END FDCAN2_Init 0 */

  /* USER CODE BEGIN FDCAN2_Init 1 */

  /* USER CODE END FDCAN2_Init 1 */
  hfdcan2.Instance = FDCAN2;
  hfdcan2.Init.ClockDivider = FDCAN_CLOCK_DIV1;
  hfdcan2.Init.FrameFormat = FDCAN_FRAME_CLASSIC;
  hfdcan2.Init.Mode = FDCAN_MODE_NORMAL;
  hfdcan2.Init.AutoRetransmission = DISABLE;
  hfdcan2.Init.TransmitPause = DISABLE;
  hfdcan2.Init.ProtocolException = DISABLE;
  hfdcan2.Init.NominalPrescaler = 16;
  hfdcan2.Init.NominalSyncJumpWidth = 1;
  hfdcan2.Init.NominalTimeSeg1 = 1;
  hfdcan2.Init.NominalTimeSeg2 = 1;
  hfdcan2.Init.DataPrescaler = 1;
  hfdcan2.Init.DataSyncJumpWidth = 1;
  hfdcan2.Init.DataTimeSeg1 = 1;
  hfdcan2.Init.DataTimeSeg2 = 1;
  hfdcan2.Init.StdFiltersNbr = 0;
  hfdcan2.Init.ExtFiltersNbr = 0;
  hfdcan2.Init.TxFifoQueueMode = FDCAN_TX_FIFO_OPERATION;
  if (HAL_FDCAN_Init(&hfdcan2) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN FDCAN2_Init 2 */

  /* USER CODE END FDCAN2_Init 2 */

}
/* FDCAN3 init function */
void MX_FDCAN3_Init(void)
{

  /* USER CODE BEGIN FDCAN3_Init 0 */

  /* USER CODE END FDCAN3_Init 0 */

  /* USER CODE BEGIN FDCAN3_Init 1 */

  /* USER CODE END FDCAN3_Init 1 */
  hfdcan3.Instance = FDCAN3;
  hfdcan3.Init.ClockDivider = FDCAN_CLOCK_DIV1;
  hfdcan3.Init.FrameFormat = FDCAN_FRAME_CLASSIC;
  hfdcan3.Init.Mode = FDCAN_MODE_NORMAL;
  hfdcan3.Init.AutoRetransmission = DISABLE;
  hfdcan3.Init.TransmitPause = DISABLE;
  hfdcan3.Init.ProtocolException = DISABLE;
  hfdcan3.Init.NominalPrescaler = 16;
  hfdcan3.Init.NominalSyncJumpWidth = 1;
  hfdcan3.Init.NominalTimeSeg1 = 1;
  hfdcan3.Init.NominalTimeSeg2 = 1;
  hfdcan3.Init.DataPrescaler = 1;
  hfdcan3.Init.DataSyncJumpWidth = 1;
  hfdcan3.Init.DataTimeSeg1 = 1;
  hfdcan3.Init.DataTimeSeg2 = 1;
  hfdcan3.Init.StdFiltersNbr = 0;
  hfdcan3.Init.ExtFiltersNbr = 0;
  hfdcan3.Init.TxFifoQueueMode = FDCAN_TX_FIFO_OPERATION;
  if (HAL_FDCAN_Init(&hfdcan3) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN FDCAN3_Init 2 */

  /* USER CODE END FDCAN3_Init 2 */

}

static uint32_t HAL_RCC_FDCAN_CLK_ENABLED=0;

void HAL_FDCAN_MspInit(FDCAN_HandleTypeDef* fdcanHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
  if(fdcanHandle->Instance==FDCAN2)
  {
  /* USER CODE BEGIN FDCAN2_MspInit 0 */

  /* USER CODE END FDCAN2_MspInit 0 */

  /** Initializes the peripherals clocks
  */
    PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_FDCAN;
    PeriphClkInit.FdcanClockSelection = RCC_FDCANCLKSOURCE_PCLK1;
    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
    {
      Error_Handler();
    }

    /* FDCAN2 clock enable */
    HAL_RCC_FDCAN_CLK_ENABLED++;
    if(HAL_RCC_FDCAN_CLK_ENABLED==1){
      __HAL_RCC_FDCAN_CLK_ENABLE();
    }

    __HAL_RCC_GPIOB_CLK_ENABLE();
    /**FDCAN2 GPIO Configuration
    PB5     ------> FDCAN2_RX
    PB6     ------> FDCAN2_TX
    */
    GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF9_FDCAN2;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /* USER CODE BEGIN FDCAN2_MspInit 1 */

  /* USER CODE END FDCAN2_MspInit 1 */
  }
  else if(fdcanHandle->Instance==FDCAN3)
  {
  /* USER CODE BEGIN FDCAN3_MspInit 0 */

  /* USER CODE END FDCAN3_MspInit 0 */

  /** Initializes the peripherals clocks
  */
    PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_FDCAN;
    PeriphClkInit.FdcanClockSelection = RCC_FDCANCLKSOURCE_PCLK1;
    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
    {
      Error_Handler();
    }

    /* FDCAN3 clock enable */
    HAL_RCC_FDCAN_CLK_ENABLED++;
    if(HAL_RCC_FDCAN_CLK_ENABLED==1){
      __HAL_RCC_FDCAN_CLK_ENABLE();
    }

    __HAL_RCC_GPIOB_CLK_ENABLE();
    /**FDCAN3 GPIO Configuration
    PB3     ------> FDCAN3_RX
    PB4     ------> FDCAN3_TX
    */
    GPIO_InitStruct.Pin = GPIO_PIN_3|GPIO_PIN_4;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF11_FDCAN3;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /* USER CODE BEGIN FDCAN3_MspInit 1 */

  /* USER CODE END FDCAN3_MspInit 1 */
  }
}

void HAL_FDCAN_MspDeInit(FDCAN_HandleTypeDef* fdcanHandle)
{

  if(fdcanHandle->Instance==FDCAN2)
  {
  /* USER CODE BEGIN FDCAN2_MspDeInit 0 */

  /* USER CODE END FDCAN2_MspDeInit 0 */
    /* Peripheral clock disable */
    HAL_RCC_FDCAN_CLK_ENABLED--;
    if(HAL_RCC_FDCAN_CLK_ENABLED==0){
      __HAL_RCC_FDCAN_CLK_DISABLE();
    }

    /**FDCAN2 GPIO Configuration
    PB5     ------> FDCAN2_RX
    PB6     ------> FDCAN2_TX
    */
    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_5|GPIO_PIN_6);

  /* USER CODE BEGIN FDCAN2_MspDeInit 1 */

  /* USER CODE END FDCAN2_MspDeInit 1 */
  }
  else if(fdcanHandle->Instance==FDCAN3)
  {
  /* USER CODE BEGIN FDCAN3_MspDeInit 0 */

  /* USER CODE END FDCAN3_MspDeInit 0 */
    /* Peripheral clock disable */
    HAL_RCC_FDCAN_CLK_ENABLED--;
    if(HAL_RCC_FDCAN_CLK_ENABLED==0){
      __HAL_RCC_FDCAN_CLK_DISABLE();
    }

    /**FDCAN3 GPIO Configuration
    PB3     ------> FDCAN3_RX
    PB4     ------> FDCAN3_TX
    */
    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_3|GPIO_PIN_4);

  /* USER CODE BEGIN FDCAN3_MspDeInit 1 */

  /* USER CODE END FDCAN3_MspDeInit 1 */
  }
}

/* USER CODE BEGIN 1 */

/* USER CODE END 1 */