*
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/**
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******************************************************************************
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* File Name : I2C.c
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* Description : This file provides code for the configuration
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* of the I2C instances.
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******************************************************************************
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* This notice applies to any and all portions of this file
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* that are not between comment pairs USER CODE BEGIN and
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* USER CODE END. Other portions of this file, whether
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* inserted by the user or by software development tools
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* are owned by their respective copyright owners.
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*
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* Copyright (c) 2018 STMicroelectronics International N.V.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted, provided that the following conditions are met:
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*
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* 1. Redistribution of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of other
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* contributors to this software may be used to endorse or promote products
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* derived from this software without specific written permission.
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* 4. This software, including modifications and/or derivative works of this
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* software, must execute solely and exclusively on microcontroller or
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* microprocessor devices manufactured by or for STMicroelectronics.
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* 5. Redistribution and use of this software other than as permitted under
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* this license is void and will automatically terminate your rights under
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* this license.
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*
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* THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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* PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
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* RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
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* SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "i2c.h"
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#include "gpio.h"
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#include "dma.h"
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/* USER CODE BEGIN 0 */
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/* USER CODE END 0 */
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I2C_HandleTypeDef hi2c1;
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DMA_HandleTypeDef hdma_i2c1_rx;
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DMA_HandleTypeDef hdma_i2c1_tx;
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/* I2C1 init function */
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void MX_I2C1_Init(uint8_t addr)
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{
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hi2c1.Instance = I2C1;
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hi2c1.Init.ClockSpeed = 100000;
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hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
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hi2c1.Init.OwnAddress1 = addr << 1;
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hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
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hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
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hi2c1.Init.OwnAddress2 = 0;
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hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
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hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
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if (HAL_I2C_Init(&hi2c1) != HAL_OK)
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{
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_Error_Handler(__FILE__, __LINE__);
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}
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}
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void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
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{
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GPIO_InitTypeDef GPIO_InitStruct;
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if(i2cHandle->Instance==I2C1)
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{
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/* USER CODE BEGIN I2C1_MspInit 0 */
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/* USER CODE END I2C1_MspInit 0 */
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/**I2C1 GPIO Configuration
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PB8 ------> I2C1_SCL
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PB9 ------> I2C1_SDA
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
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GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
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HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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/* I2C1 clock enable */
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__HAL_RCC_I2C1_CLK_ENABLE();
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/* I2C1 DMA Init */
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/* I2C1_RX Init */
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hdma_i2c1_rx.Instance = DMA1_Stream0;
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hdma_i2c1_rx.Init.Channel = DMA_CHANNEL_1;
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hdma_i2c1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
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hdma_i2c1_rx.Init.PeriphInc = DMA_PINC_DISABLE;
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hdma_i2c1_rx.Init.MemInc = DMA_MINC_ENABLE;
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hdma_i2c1_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
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hdma_i2c1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
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hdma_i2c1_rx.Init.Mode = DMA_CIRCULAR;
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hdma_i2c1_rx.Init.Priority = DMA_PRIORITY_LOW;
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hdma_i2c1_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
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if (HAL_DMA_Init(&hdma_i2c1_rx) != HAL_OK)
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{
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_Error_Handler(__FILE__, __LINE__);
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}
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__HAL_LINKDMA(i2cHandle,hdmarx,hdma_i2c1_rx);
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/* I2C1_TX Init */
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hdma_i2c1_tx.Instance = DMA1_Stream6;
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hdma_i2c1_tx.Init.Channel = DMA_CHANNEL_1;
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hdma_i2c1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
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hdma_i2c1_tx.Init.PeriphInc = DMA_PINC_DISABLE;
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hdma_i2c1_tx.Init.MemInc = DMA_MINC_ENABLE;
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hdma_i2c1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
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hdma_i2c1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
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hdma_i2c1_tx.Init.Mode = DMA_NORMAL;
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hdma_i2c1_tx.Init.Priority = DMA_PRIORITY_LOW;
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hdma_i2c1_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
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if (HAL_DMA_Init(&hdma_i2c1_tx) != HAL_OK)
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{
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_Error_Handler(__FILE__, __LINE__);
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}
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__HAL_LINKDMA(i2cHandle,hdmatx,hdma_i2c1_tx);
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/* I2C1 interrupt Init */
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HAL_NVIC_SetPriority(I2C1_EV_IRQn, 5, 0);
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HAL_NVIC_EnableIRQ(I2C1_EV_IRQn);
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HAL_NVIC_SetPriority(I2C1_ER_IRQn, 5, 0);
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HAL_NVIC_EnableIRQ(I2C1_ER_IRQn);
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/* USER CODE BEGIN I2C1_MspInit 1 */
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/* USER CODE END I2C1_MspInit 1 */
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}
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}
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void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
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{
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if(i2cHandle->Instance==I2C1)
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{
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/* USER CODE BEGIN I2C1_MspDeInit 0 */
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/* USER CODE END I2C1_MspDeInit 0 */
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/* Peripheral clock disable */
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__HAL_RCC_I2C1_CLK_DISABLE();
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/**I2C1 GPIO Configuration
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PB8 ------> I2C1_SCL
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PB9 ------> I2C1_SDA
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*/
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HAL_GPIO_DeInit(GPIOB, GPIO_PIN_8|GPIO_PIN_9);
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/* I2C1 DMA DeInit */
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HAL_DMA_DeInit(i2cHandle->hdmarx);
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HAL_DMA_DeInit(i2cHandle->hdmatx);
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/* I2C1 interrupt Deinit */
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HAL_NVIC_DisableIRQ(I2C1_EV_IRQn);
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HAL_NVIC_DisableIRQ(I2C1_ER_IRQn);
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/* USER CODE BEGIN I2C1_MspDeInit 1 */
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/* USER CODE END I2C1_MspDeInit 1 */
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}
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}
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 */
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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