M5Module-Fan-Internal-FW/code/Module-FAN/Core/Src/i2c.c

/* USER CODE BEGIN Header */
/**
 ******************************************************************************
 * @file    i2c.c
 * @brief   This file provides code for the configuration
 *          of the I2C instances.
 ******************************************************************************
 * @attention
 *
 * Copyright (c) 2024 STMicroelectronics.
 * All rights reserved.
 *
 * This software is licensed under terms that can be found in the LICENSE file
 * in the root directory of this software component.
 * If no LICENSE file comes with this software, it is provided AS-IS.
 *
 ******************************************************************************
 */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "i2c.h"

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/* I2C1 init function */
void MX_I2C1_Init(void)
{
    /* USER CODE BEGIN I2C1_Init 0 */

    /* USER CODE END I2C1_Init 0 */

    LL_I2C_InitTypeDef I2C_InitStruct = {0};

    LL_GPIO_InitTypeDef GPIO_InitStruct = {0};

    LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOA);
    /**I2C1 GPIO Configuration
    PA9   ------> I2C1_SCL
    PA10   ------> I2C1_SDA
    */
    GPIO_InitStruct.Pin        = LL_GPIO_PIN_9;
    GPIO_InitStruct.Mode       = LL_GPIO_MODE_ALTERNATE;
    GPIO_InitStruct.Speed      = LL_GPIO_SPEED_FREQ_HIGH;
    GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
    GPIO_InitStruct.Pull       = LL_GPIO_PULL_UP;
    GPIO_InitStruct.Alternate  = LL_GPIO_AF_4;
    LL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    GPIO_InitStruct.Pin        = LL_GPIO_PIN_10;
    GPIO_InitStruct.Mode       = LL_GPIO_MODE_ALTERNATE;
    GPIO_InitStruct.Speed      = LL_GPIO_SPEED_FREQ_HIGH;
    GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
    GPIO_InitStruct.Pull       = LL_GPIO_PULL_UP;
    GPIO_InitStruct.Alternate  = LL_GPIO_AF_4;
    LL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    LL_SYSCFG_EnableFastModePlus(SYSCFG_CFGR1_I2C_FMP_PA9);

    /* Peripheral clock enable */
    LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_I2C1);

    /* I2C1 interrupt Init */
    NVIC_SetPriority(I2C1_IRQn, 0);
    NVIC_EnableIRQ(I2C1_IRQn);

    /* USER CODE BEGIN I2C1_Init 1 */

    /* USER CODE END I2C1_Init 1 */

    /** I2C Initialization
     */
    LL_I2C_DisableOwnAddress2(I2C1);
    LL_I2C_DisableGeneralCall(I2C1);
    LL_I2C_EnableClockStretching(I2C1);
    I2C_InitStruct.PeripheralMode  = LL_I2C_MODE_I2C;
    I2C_InitStruct.Timing          = 0x0090194B;
    I2C_InitStruct.AnalogFilter    = LL_I2C_ANALOGFILTER_ENABLE;
    I2C_InitStruct.DigitalFilter   = 0;
    I2C_InitStruct.OwnAddress1     = 0x59 << 1;
    I2C_InitStruct.TypeAcknowledge = LL_I2C_ACK;
    I2C_InitStruct.OwnAddrSize     = LL_I2C_OWNADDRESS1_7BIT;
    LL_I2C_Init(I2C1, &I2C_InitStruct);
    LL_I2C_EnableAutoEndMode(I2C1);
    LL_I2C_SetOwnAddress2(I2C1, 0, LL_I2C_OWNADDRESS2_NOMASK);
    /* USER CODE BEGIN I2C1_Init 2 */

    /* USER CODE END I2C1_Init 2 */
}

/* USER CODE BEGIN 1 */
void user_i2c_init(void)
{
    /* USER CODE BEGIN I2C1_Init 0 */

    /* USER CODE END I2C1_Init 0 */

    LL_I2C_InitTypeDef I2C_InitStruct = {0};

    LL_GPIO_InitTypeDef GPIO_InitStruct = {0};

    LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOA);
    /**I2C1 GPIO Configuration
    PA9   ------> I2C1_SCL
    PA10   ------> I2C1_SDA
    */
    GPIO_InitStruct.Pin        = LL_GPIO_PIN_9;
    GPIO_InitStruct.Mode       = LL_GPIO_MODE_ALTERNATE;
    GPIO_InitStruct.Speed      = LL_GPIO_SPEED_FREQ_HIGH;
    GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
    GPIO_InitStruct.Pull       = LL_GPIO_PULL_UP;
    GPIO_InitStruct.Alternate  = LL_GPIO_AF_4;
    LL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    GPIO_InitStruct.Pin        = LL_GPIO_PIN_10;
    GPIO_InitStruct.Mode       = LL_GPIO_MODE_ALTERNATE;
    GPIO_InitStruct.Speed      = LL_GPIO_SPEED_FREQ_HIGH;
    GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
    GPIO_InitStruct.Pull       = LL_GPIO_PULL_UP;
    GPIO_InitStruct.Alternate  = LL_GPIO_AF_4;
    LL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    LL_SYSCFG_EnableFastModePlus(SYSCFG_CFGR1_I2C_FMP_PA9);

    /* Peripheral clock enable */
    LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_I2C1);

    /* I2C1 interrupt Init */
    NVIC_SetPriority(I2C1_IRQn, 0);
    NVIC_EnableIRQ(I2C1_IRQn);

    /* USER CODE BEGIN I2C1_Init 1 */

    /* USER CODE END I2C1_Init 1 */

    /** I2C Initialization
     */
    LL_I2C_DisableOwnAddress2(I2C1);
    LL_I2C_DisableGeneralCall(I2C1);
    LL_I2C_EnableClockStretching(I2C1);
    I2C_InitStruct.PeripheralMode  = LL_I2C_MODE_I2C;
    I2C_InitStruct.Timing          = 0x20000209;
    I2C_InitStruct.AnalogFilter    = LL_I2C_ANALOGFILTER_ENABLE;
    I2C_InitStruct.DigitalFilter   = 0;
    I2C_InitStruct.OwnAddress1     = i2c_addr_reg << 1;
    I2C_InitStruct.TypeAcknowledge = LL_I2C_ACK;
    I2C_InitStruct.OwnAddrSize     = LL_I2C_OWNADDRESS1_7BIT;
    LL_I2C_Init(I2C1, &I2C_InitStruct);
    LL_I2C_EnableAutoEndMode(I2C1);
    LL_I2C_SetOwnAddress2(I2C1, 0, LL_I2C_OWNADDRESS2_NOMASK);

    /** I2C Fast mode Plus enable
     */
    LL_SYSCFG_EnableFastModePlus(LL_SYSCFG_I2C_FASTMODEPLUS_I2C1);
    /* USER CODE BEGIN I2C1_Init 2 */
    set_i2c_slave_address(i2c_addr_reg);
    /* USER CODE END I2C1_Init 2 */
}
/* USER CODE END 1 */