ref: 21f5ac6f65245a6d5f1b63b0f1a38d4001f1d5dc
dir: /LEAF/Src/i2c.c/
/**
******************************************************************************
* File Name : I2C.c
* Description : This file provides code for the configuration
* of the I2C instances.
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2020 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under Ultimate Liberty license
* SLA0044, the "License"; You may not use this file except in compliance with
* the License. You may obtain a copy of the License at:
* www.st.com/SLA0044
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "i2c.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
I2C_HandleTypeDef hi2c2;
I2C_HandleTypeDef hi2c4;
DMA_HandleTypeDef hdma_i2c4_rx;
DMA_HandleTypeDef hdma_i2c4_tx;
/* I2C2 init function */
void MX_I2C2_Init(void)
{
hi2c2.Instance = I2C2;
hi2c2.Init.Timing = 0x505097F4;
hi2c2.Init.OwnAddress1 = 0;
hi2c2.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c2.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c2.Init.OwnAddress2 = 0;
hi2c2.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
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 (HAL_I2CEx_ConfigAnalogFilter(&hi2c2, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
{
Error_Handler();
}
/** Configure Digital filter
*/
if (HAL_I2CEx_ConfigDigitalFilter(&hi2c2, 0) != HAL_OK)
{
Error_Handler();
}
}
/* I2C4 init function */
void MX_I2C4_Init(void)
{
hi2c4.Instance = I2C4;
hi2c4.Init.Timing = 0x307075B1;
hi2c4.Init.OwnAddress1 = 0;
hi2c4.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c4.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c4.Init.OwnAddress2 = 0;
hi2c4.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
hi2c4.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c4.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c4) != HAL_OK)
{
Error_Handler();
}
/** Configure Analogue filter
*/
if (HAL_I2CEx_ConfigAnalogFilter(&hi2c4, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
{
Error_Handler();
}
/** Configure Digital filter
*/
if (HAL_I2CEx_ConfigDigitalFilter(&hi2c4, 0) != HAL_OK)
{
Error_Handler();
}
}
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
PB10 ------> I2C2_SCL
PB11 ------> I2C2_SDA
*/
GPIO_InitStruct.Pin = GPIO_PIN_10|GPIO_PIN_11;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF4_I2C2;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* I2C2 clock enable */
__HAL_RCC_I2C2_CLK_ENABLE();
/* USER CODE BEGIN I2C2_MspInit 1 */
/* USER CODE END I2C2_MspInit 1 */
}
else if(i2cHandle->Instance==I2C4)
{
/* USER CODE BEGIN I2C4_MspInit 0 */
/* USER CODE END I2C4_MspInit 0 */
__HAL_RCC_GPIOD_CLK_ENABLE();
/**I2C4 GPIO Configuration
PD12 ------> I2C4_SCL
PD13 ------> I2C4_SDA
*/
GPIO_InitStruct.Pin = GPIO_PIN_12|GPIO_PIN_13;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_MEDIUM;
GPIO_InitStruct.Alternate = GPIO_AF4_I2C4;
HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
/* I2C4 clock enable */
__HAL_RCC_I2C4_CLK_ENABLE();
/* I2C4 DMA Init */
/* I2C4_RX Init */
hdma_i2c4_rx.Instance = BDMA_Channel0;
hdma_i2c4_rx.Init.Request = BDMA_REQUEST_I2C4_RX;
hdma_i2c4_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_i2c4_rx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_i2c4_rx.Init.MemInc = DMA_MINC_ENABLE;
hdma_i2c4_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
hdma_i2c4_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_i2c4_rx.Init.Mode = DMA_NORMAL;
hdma_i2c4_rx.Init.Priority = DMA_PRIORITY_LOW;
if (HAL_DMA_Init(&hdma_i2c4_rx) != HAL_OK)
{
Error_Handler();
}
__HAL_LINKDMA(i2cHandle,hdmarx,hdma_i2c4_rx);
/* I2C4_TX Init */
hdma_i2c4_tx.Instance = BDMA_Channel1;
hdma_i2c4_tx.Init.Request = BDMA_REQUEST_I2C4_TX;
hdma_i2c4_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
hdma_i2c4_tx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_i2c4_tx.Init.MemInc = DMA_MINC_ENABLE;
hdma_i2c4_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
hdma_i2c4_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_i2c4_tx.Init.Mode = DMA_NORMAL;
hdma_i2c4_tx.Init.Priority = DMA_PRIORITY_LOW;
if (HAL_DMA_Init(&hdma_i2c4_tx) != HAL_OK)
{
Error_Handler();
}
__HAL_LINKDMA(i2cHandle,hdmatx,hdma_i2c4_tx);
/* I2C4 interrupt Init */
HAL_NVIC_SetPriority(I2C4_EV_IRQn, 6, 0);
HAL_NVIC_EnableIRQ(I2C4_EV_IRQn);
HAL_NVIC_SetPriority(I2C4_ER_IRQn, 6, 0);
HAL_NVIC_EnableIRQ(I2C4_ER_IRQn);
/* USER CODE BEGIN I2C4_MspInit 1 */
/* USER CODE END I2C4_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
PB10 ------> I2C2_SCL
PB11 ------> I2C2_SDA
*/
HAL_GPIO_DeInit(GPIOB, GPIO_PIN_10|GPIO_PIN_11);
/* USER CODE BEGIN I2C2_MspDeInit 1 */
/* USER CODE END I2C2_MspDeInit 1 */
}
else if(i2cHandle->Instance==I2C4)
{
/* USER CODE BEGIN I2C4_MspDeInit 0 */
/* USER CODE END I2C4_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_I2C4_CLK_DISABLE();
/**I2C4 GPIO Configuration
PD12 ------> I2C4_SCL
PD13 ------> I2C4_SDA
*/
HAL_GPIO_DeInit(GPIOD, GPIO_PIN_12|GPIO_PIN_13);
/* I2C4 DMA DeInit */
HAL_DMA_DeInit(i2cHandle->hdmarx);
HAL_DMA_DeInit(i2cHandle->hdmatx);
/* I2C4 interrupt Deinit */
HAL_NVIC_DisableIRQ(I2C4_EV_IRQn);
HAL_NVIC_DisableIRQ(I2C4_ER_IRQn);
/* USER CODE BEGIN I2C4_MspDeInit 1 */
/* USER CODE END I2C4_MspDeInit 1 */
}
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/