/**
  ******************************************************************************
  * @file    i2c.c
  * @brief   This file provides code for the configuration
  *          of the I2C instances.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2021 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 "i2c.h"

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

I2C_HandleTypeDef hi2c2;
DMA_HandleTypeDef hdma_i2c2_rx;
DMA_HandleTypeDef hdma_i2c2_tx;

/* I2C2 init function */
void MX_I2C_Init(void)
{

  hi2c2.Instance = I2C2;
  hi2c2.Init.Timing = 0x20000209; //0x2010091A = 400K Fast Mode, 0x20303E5D, 100K Standard mode, 0x20000209 Fast Mode Plus, 1Mbps
  hi2c2.Init.OwnAddress1 = 0;
  hi2c2.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
  hi2c2.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
  hi2c2.Init.OwnAddress2 = 0;
  hi2c2.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
  hi2c2.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
  if (HAL_I2C_Init(&hi2c2) != HAL_OK)
  {
	Error_Handler();
  }
  /** Configure Analogue filter
  */
#if defined(STM32WL55JC)
  if (HAL_I2CEx_ConfigAnalogFilter(&hi2c2, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
  {
    Error_Handler();
  }
  /** Configure Digital filter
  */
  if (HAL_I2CEx_ConfigDigitalFilter(&hi2c2, 0) != HAL_OK)
  {
    Error_Handler();
  }
#endif
}


void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(i2cHandle->Instance==I2C2)
  {
    /* USER CODE BEGIN I2C2_MspInit 0 */

    /* USER CODE END I2C2_MspInit 0 */

      __HAL_RCC_GPIOB_CLK_ENABLE();
      /**I2C2 GPIO Configuration
      PA12     ------> I2C2_SCL
      PA11     ------> I2C2_SDA
      */
      GPIO_InitStruct.Pin = MEMS_I2C_SCL_Pin|MEMS_I2C_SDA_Pin;
      GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
      GPIO_InitStruct.Pull = GPIO_PULLUP;
      GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
      GPIO_InitStruct.Alternate = GPIO_AF4_I2C2;
      HAL_GPIO_Init(MEMS_I2C_SDA_GPIO_Port, &GPIO_InitStruct);

      /* I2C2 clock enable */
      __HAL_RCC_I2C2_CLK_ENABLE();
    /* USER CODE BEGIN I2C2_MspInit 1 */

      /* I2C2 DMA Init */
      /* I2C2_RX Init */
      hdma_i2c2_rx.Instance = DMA1_Channel4;
      hdma_i2c2_rx.Init.Request = DMA_REQUEST_I2C2_RX;
      hdma_i2c2_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
      hdma_i2c2_rx.Init.PeriphInc = DMA_PINC_DISABLE;
      hdma_i2c2_rx.Init.MemInc = DMA_MINC_ENABLE;
      hdma_i2c2_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
      hdma_i2c2_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
      hdma_i2c2_rx.Init.Mode = DMA_NORMAL;
      hdma_i2c2_rx.Init.Priority = DMA_PRIORITY_LOW;
      if (HAL_DMA_Init(&hdma_i2c2_rx) != HAL_OK)
      {
        Error_Handler();
      }
  #ifdef STM32WL55xx
      if (HAL_DMA_ConfigChannelAttributes(&hdma_i2c2_rx, DMA_CHANNEL_NPRIV) != HAL_OK)
      {
        Error_Handler();
      }
  #endif
      __HAL_LINKDMA(i2cHandle,hdmarx,hdma_i2c2_rx);

      /* I2C2_TX Init */
      hdma_i2c2_tx.Instance = DMA1_Channel5;
      hdma_i2c2_tx.Init.Request = DMA_REQUEST_I2C2_TX;
      hdma_i2c2_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
      hdma_i2c2_tx.Init.PeriphInc = DMA_PINC_DISABLE;
      hdma_i2c2_tx.Init.MemInc = DMA_MINC_ENABLE;
      hdma_i2c2_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
      hdma_i2c2_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
      hdma_i2c2_tx.Init.Mode = DMA_NORMAL;
      hdma_i2c2_tx.Init.Priority = DMA_PRIORITY_LOW;
      if (HAL_DMA_Init(&hdma_i2c2_tx) != HAL_OK)
      {
        Error_Handler();
      }
  #ifdef STM32WL55xx
      if (HAL_DMA_ConfigChannelAttributes(&hdma_i2c2_tx, DMA_CHANNEL_NPRIV) != HAL_OK)
      {
        Error_Handler();
      }
  #endif
      __HAL_LINKDMA(i2cHandle,hdmatx,hdma_i2c2_tx);

    /* USER CODE END I2C2_MspInit 1 */
  }

}

void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
{
  if(i2cHandle->Instance==I2C2)
  {
  /* USER CODE BEGIN I2C2_MspDeInit 0 */

  /* USER CODE END I2C2_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_I2C2_CLK_DISABLE();

    /**I2C2 GPIO Configuration
    PA12     ------> I2C2_SCL
    PA11     ------> I2C2_SDA
    */
    HAL_GPIO_DeInit(MEMS_I2C_SCL_GPIO_Port, MEMS_I2C_SCL_Pin);

    HAL_GPIO_DeInit(MEMS_I2C_SDA_GPIO_Port, MEMS_I2C_SDA_Pin);

    /* I2C2 DMA DeInit */
    HAL_DMA_DeInit(i2cHandle->hdmarx);
    HAL_DMA_DeInit(i2cHandle->hdmatx);


  /* USER CODE BEGIN I2C2_MspDeInit 1 */

  /* USER CODE END I2C2_MspDeInit 1 */
  }

}

/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

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