/**
  ******************************************************************************
  * @file    py32f040e_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 the MSP
  */
void HAL_MspInit(void)
{
  __HAL_RCC_SYSCFG_CLK_ENABLE();
  __HAL_RCC_PWR_CLK_ENABLE();
}

/**
  * @brief Initialize USART related MSP
  */
void HAL_UART_MspInit(UART_HandleTypeDef *huart)
{
  /* Enable clock */
  __HAL_RCC_USART2_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_SYSCFG_CLK_ENABLE();
  __HAL_RCC_DMA_CLK_ENABLE();
  
  /**USART2 pin configuration
    PA2     ------> USART2_TX
    PA3     ------> USART2_RX
    */
  GPIO_InitTypeDef  GPIO_InitStruct = {0};
  GPIO_InitStruct.Pin = GPIO_PIN_2 | GPIO_PIN_3;
  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF1_USART2;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /* USART2 DMA related configuration */
  /* Initialize USART2_TX */
  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);
  /* Initialize USART2_RX */
  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);
  
  /* DMA channel map. */
  HAL_DMA_ChannelMap(&hdma_usart2_tx, DMA_CHANNEL_MAP_USART2_WR);
  HAL_DMA_ChannelMap(&hdma_usart2_rx, DMA_CHANNEL_MAP_USART2_RD);

  /* Enable interrupt in 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_3_IRQn, 1, 1);
  HAL_NVIC_EnableIRQ(DMA1_Channel2_3_IRQn);
}

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