/**
  ******************************************************************************
  * @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 Initialize I2C MSP
  */
void HAL_I2C_MspInit(I2C_HandleTypeDef *hi2c)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* Enable clock */
  __HAL_RCC_GPIOB_CLK_ENABLE();
  __HAL_RCC_I2C1_CLK_ENABLE();
  __HAL_RCC_DMA_CLK_ENABLE();

  if (hi2c->Instance == I2C1)
  {
    /**I2C GPIO Configuration
    PB3  -------> I2C1_SCL
    PB4  -------> I2C1_SDA
    */
    GPIO_InitStruct.Pin       = GPIO_PIN_3 | GPIO_PIN_4;
    GPIO_InitStruct.Mode      = GPIO_MODE_AF_OD;               /* Open-drain mode */
    GPIO_InitStruct.Pull      = GPIO_PULLUP;                   /* Pull-up */
    GPIO_InitStruct.Speed     = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF8_I2C1;                 /* Alternate as I2C */
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);                    /* Initialize GPIO */
    
    /* I2C1 DMA Init */
    /* I2C1_TX Init */
    hdma_i2c_tx.Instance                 = DMA_Channel1;
    hdma_i2c_tx.Init.Direction           = DMA_MEMORY_TO_PERIPH;
    hdma_i2c_tx.Init.PeriphInc           = DMA_PADDR_FIX;
    hdma_i2c_tx.Init.MemInc              = DMA_MADDR_INC;
    hdma_i2c_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
    hdma_i2c_tx.Init.MemDataAlignment    = DMA_MDATAALIGN_BYTE;
    hdma_i2c_tx.Init.Mode                = DMA_NORMAL;
    hdma_i2c_tx.Init.Priority            = DMA_PRIORITY_0;
    hdma_i2c_tx.Init.TransMode           = DMA_TRANSFER_SINGLE;
    if (HAL_DMA_Init(&hdma_i2c_tx) != HAL_OK)
    {
      APP_ErrorHandler();
    }

    /* Set DMA channel map. */
    HAL_DMA_ChannelMap(&hdma_i2c_tx, DMA_CHANNEL_MAP_I2C1_TX); /* I2C1_TX DMA1_CH1 */
    
    /* DMA handle is associated with I2C handle */
    __HAL_LINKDMA(hi2c,hdmatx,hdma_i2c_tx);

    /* i2c_RX Init */
    hdma_i2c_rx.Instance                 = DMA_Channel2;
    hdma_i2c_rx.Init.Direction           = DMA_PERIPH_TO_MEMORY;
    hdma_i2c_rx.Init.PeriphInc           = DMA_PADDR_FIX;
    hdma_i2c_rx.Init.MemInc              = DMA_MADDR_INC;
    hdma_i2c_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
    hdma_i2c_rx.Init.MemDataAlignment    = DMA_MDATAALIGN_BYTE;
    hdma_i2c_rx.Init.Mode                = DMA_NORMAL;
    hdma_i2c_rx.Init.Priority            = DMA_PRIORITY_1;
    hdma_i2c_rx.Init.TransMode           = DMA_TRANSFER_SINGLE;
    if (HAL_DMA_Init(&hdma_i2c_rx) != HAL_OK)
    {
      APP_ErrorHandler();
    }

    /* Set DMA channel map. */
    HAL_DMA_ChannelMap(&hdma_i2c_rx, DMA_CHANNEL_MAP_I2C1_RX); /* I2C1_RX DMA1_CH2 */
    
    /* DMA handle is associated with I2C handle */
    __HAL_LINKDMA(hi2c, hdmarx, hdma_i2c_rx);
      
    /* DMA interrupt configuration*/
    HAL_NVIC_SetPriority(DMA_Channel1_IRQn, 2, 0);
    HAL_NVIC_EnableIRQ(DMA_Channel1_IRQn);
    HAL_NVIC_SetPriority(DMA_Channel2_IRQn, 2, 0);
    HAL_NVIC_EnableIRQ(DMA_Channel2_IRQn);
    
    /* Enable NVIC interrupt for I2C */
    HAL_NVIC_SetPriority(I2C1_EV_IRQn, 0, 0);                   /* Set interrupt priority */
    HAL_NVIC_EnableIRQ(I2C1_EV_IRQn);                           /* Enable I2C interrupt */
    HAL_NVIC_SetPriority(I2C1_ER_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(I2C1_ER_IRQn);
  }
}
/************************ (C) COPYRIGHT Puya *****END OF FILE******************/
