86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* @file i2c.c
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* @brief This file provides code for the configuration
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* of the I2C instances.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2026 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* USER CODE END Header */
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/* Includes ------------------------------------------------------------------*/
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#include "i2c.h"
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/* USER CODE BEGIN 0 */
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/* USER CODE END 0 */
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/* I2C1 init function */
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void MX_I2C1_Init(void)
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{
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/* USER CODE BEGIN I2C1_Init 0 */
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/* USER CODE END I2C1_Init 0 */
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LL_I2C_InitTypeDef I2C_InitStruct = {0};
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LL_GPIO_InitTypeDef GPIO_InitStruct = {0};
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LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOB);
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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 = LL_GPIO_PIN_8|LL_GPIO_PIN_9;
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GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
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GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
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GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
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GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
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GPIO_InitStruct.Alternate = LL_GPIO_AF_4;
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LL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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/* Peripheral clock enable */
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LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_I2C1);
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/* I2C1 interrupt Init */
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NVIC_SetPriority(I2C1_EV_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
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NVIC_EnableIRQ(I2C1_EV_IRQn);
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/* USER CODE BEGIN I2C1_Init 1 */
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/* USER CODE END I2C1_Init 1 */
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/** I2C Initialization
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*/
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LL_I2C_DisableOwnAddress2(I2C1);
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LL_I2C_DisableGeneralCall(I2C1);
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LL_I2C_EnableClockStretching(I2C1);
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I2C_InitStruct.PeripheralMode = LL_I2C_MODE_I2C;
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I2C_InitStruct.ClockSpeed = 100000;
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I2C_InitStruct.DutyCycle = LL_I2C_DUTYCYCLE_2;
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I2C_InitStruct.OwnAddress1 = 2;
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I2C_InitStruct.TypeAcknowledge = LL_I2C_ACK;
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I2C_InitStruct.OwnAddrSize = LL_I2C_OWNADDRESS1_7BIT;
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LL_I2C_Init(I2C1, &I2C_InitStruct);
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LL_I2C_SetOwnAddress2(I2C1, 0);
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/* USER CODE BEGIN I2C1_Init 2 */
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/* USER CODE END I2C1_Init 2 */
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}
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 */
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