/**
  ******************************************************************************
  * @file    py32f420_hal_msp.c
  * @author  MCU Application Team
  * @brief   This file provides code for the MSP Initialization
  *          and de-Initialization codes.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2023 Puya Semiconductor Co.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by Puya 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
  *
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * 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
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* External functions --------------------------------------------------------*/

/**
  * @brief Initialize global MSP
  */
void HAL_MspInit(void)
{
  __HAL_RCC_SYSCFG_CLK_ENABLE();
  __HAL_RCC_PWR_CLK_ENABLE();
}

/**
  * @brief  Initializes the FDCAN MSP.
  * @param  hfdcan: pointer to an FDCAN_HandleTypeDef structure that contains
  *         the configuration information for the specified FDCAN.
  * @retval None
  */
void HAL_FDCAN_MspInit(FDCAN_HandleTypeDef* hfdcan)
{
  GPIO_InitTypeDef  GPIO_InitStruct = {0};
  RCC_PeriphCLKInitTypeDef  PeriphClkInit = {0};
  
  /*##-1- Enable peripherals and GPIO Clocks #################################*/
  /* Enable GPIO TX/RX clock */
  __HAL_RCC_GPIOA_CLK_ENABLE();
  
  /* The clock source selection for CAN is APB1 clock */
  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_FDCAN;
  PeriphClkInit.FdcanClockSelection = RCC_FDCANCLKSOURCE_PCLK1;
  /* PeriphClkInit.FdcanPLLDiv         = 1; */
  HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit); /* The clock source frequency of CAN is 20Mhz */
  
  /* Enable FDCAN1 clock */
  __HAL_RCC_FDCAN_CLK_ENABLE();
  
  /*##-2- Configure peripheral GPIO ##########################################*/
  /* FDCAN_RX:PA4
     FDCAN_TX:PA5 */
  GPIO_InitStruct.Pin       = GPIO_PIN_4 | GPIO_PIN_5;
  GPIO_InitStruct.Mode      = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull      = GPIO_PULLUP;
  GPIO_InitStruct.Speed     = GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF9_FDCAN;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
  
  /* Enable NVIC interrupt */
  HAL_NVIC_SetPriority(FDCAN_INT0_IRQn, 1, 0);
  HAL_NVIC_EnableIRQ(FDCAN_INT0_IRQn);
}
/************************ (C) COPYRIGHT Puya *****END OF FILE******************/
