/**
  ******************************************************************************
  * @file    py32f4xx_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 ---------------------------------------------------------*/
DMA_HandleTypeDef hdma_usart2_tx;
DMA_HandleTypeDef hdma_usart2_rx;

/* Private function prototypes -----------------------------------------------*/
/* External functions --------------------------------------------------------*/

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

/**
  * @brief Initialize USART MSP
  * @param  huart：USART handle
  */
void HAL_UART_MspInit(UART_HandleTypeDef *huart)
{
  GPIO_InitTypeDef  GPIO_InitStruct;

  if (huart->Instance == USART2)
  {
    /* Enable clock */
    __HAL_RCC_GPIOA_CLK_ENABLE();
    __HAL_RCC_USART2_CLK_ENABLE();
    __HAL_RCC_SYSCFG_CLK_ENABLE();
    __HAL_RCC_DMA1_CLK_ENABLE();
    
    /* GPIO Initialization
    PA2     ------> USART1_TX
    PA3     ------> USART1_RX
    */
    GPIO_InitStruct.Pin       = GPIO_PIN_2;
    GPIO_InitStruct.Mode      = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull      = GPIO_PULLUP;
    GPIO_InitStruct.Speed     = GPIO_SPEED_FREQ_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF2_USART2;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_3;
    GPIO_InitStruct.Alternate = GPIO_AF2_USART2;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
    
    /* USART2 DMA configuration */
    /* USART2_TX initialization */
    hdma_usart2_tx.Instance = DMA1_Channel1;
    hdma_usart2_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
    hdma_usart2_tx.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_usart2_tx.Init.MemInc = DMA_MINC_ENABLE;
    hdma_usart2_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
    hdma_usart2_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
    hdma_usart2_tx.Init.Mode = DMA_NORMAL;
    hdma_usart2_tx.Init.Priority = DMA_PRIORITY_LOW;
    if (HAL_DMA_Init(&hdma_usart2_tx) != HAL_OK)
    {
      APP_ErrorHandler();
    }

    __HAL_LINKDMA(&UartHandle, hdmatx, hdma_usart2_tx);
    /* USART2_RX initialization */
    hdma_usart2_rx.Instance = DMA1_Channel2;
    hdma_usart2_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
    hdma_usart2_rx.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_usart2_rx.Init.MemInc = DMA_MINC_ENABLE;
    hdma_usart2_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
    hdma_usart2_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
    hdma_usart2_rx.Init.Mode = DMA_NORMAL;
    hdma_usart2_rx.Init.Priority = DMA_PRIORITY_LOW;
    if (HAL_DMA_Init(&hdma_usart2_rx) != HAL_OK)
    {
      APP_ErrorHandler();
    }
    __HAL_LINKDMA(&UartHandle, hdmarx, hdma_usart2_rx);
    
    /* Set DMA request mapping */
    HAL_DMA_ChannelMap(&hdma_usart2_tx, DMA_CHANNEL_MAP_USART2_WR);
    HAL_DMA_ChannelMap(&hdma_usart2_rx, DMA_CHANNEL_MAP_USART2_RD);
    
    /* Enable NVIC */
    HAL_NVIC_SetPriority(USART2_IRQn, 0, 1);
    HAL_NVIC_EnableIRQ(USART2_IRQn);
    
    HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 1);
    HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn);

    HAL_NVIC_SetPriority(DMA1_Channel2_IRQn, 1, 1);
    HAL_NVIC_EnableIRQ(DMA1_Channel2_IRQn);
  }
}

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