| 1 | /**
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| 2 | ******************************************************************************
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| 3 | * @file i2c.c
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| 4 | * @brief This file provides code for the configuration
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| 5 | * of the I2C instances.
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| 6 | ******************************************************************************
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| 7 | * @attention
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| 8 | *
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| 9 | * <h2><center>© Copyright (c) 2021 STMicroelectronics.
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| 10 | * All rights reserved.</center></h2>
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| 11 | *
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| 12 | * This software component is licensed by ST under Ultimate Liberty license
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| 13 | * SLA0044, the "License"; You may not use this file except in compliance with
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| 14 | * the License. You may obtain a copy of the License at:
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| 15 | * www.st.com/SLA0044
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| 16 | *
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| 17 | ******************************************************************************
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| 18 | */
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| 19 |
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| 20 | /* Includes ------------------------------------------------------------------*/
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| 21 | #include "i2c.h"
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| 22 |
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| 23 | /* USER CODE BEGIN 0 */
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| 24 |
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| 25 | /* USER CODE END 0 */
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| 26 |
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| 27 | I2C_HandleTypeDef hi2c1;
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| 28 |
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| 29 | /* I2C1 init function */
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| 30 | void MX_I2C1_Init(void)
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| 31 | {
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| 32 |
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| 33 | /* USER CODE BEGIN I2C1_Init 0 */
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| 34 |
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| 35 | /* USER CODE END I2C1_Init 0 */
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| 36 |
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| 37 | /* USER CODE BEGIN I2C1_Init 1 */
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| 38 |
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| 39 | /* USER CODE END I2C1_Init 1 */
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| 40 | hi2c1.Instance = I2C1;
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| 41 | hi2c1.Init.ClockSpeed = 400000;
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| 42 | hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
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| 43 | hi2c1.Init.OwnAddress1 = 0;
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| 44 | hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
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| 45 | hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
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| 46 | hi2c1.Init.OwnAddress2 = 0;
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| 47 | hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
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| 48 | hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
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| 49 | if (HAL_I2C_Init(&hi2c1) != HAL_OK)
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| 50 | {
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| 51 | Error_Handler();
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| 52 | }
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| 53 | /** Configure Analogue filter
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| 54 | */
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| 55 | // if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
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| 56 | // {
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| 57 | // Error_Handler();
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| 58 | // }
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| 59 | // /** Configure Digital filter
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| 60 | // */
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| 61 | // if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
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| 62 | // {
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| 63 | // Error_Handler();
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| 64 | // }
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| 65 | /* USER CODE BEGIN I2C1_Init 2 */
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| 66 |
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| 67 | /* USER CODE END I2C1_Init 2 */
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| 68 |
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| 69 | }
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| 70 |
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| 71 | void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
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| 72 | {
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| 73 |
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| 74 | GPIO_InitTypeDef GPIO_InitStruct = {0};
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| 75 | if(i2cHandle->Instance==I2C1)
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| 76 | {
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| 77 | /* USER CODE BEGIN I2C1_MspInit 0 */
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| 78 | i2cHandle->Instance->CR1 |= I2C_CR1_SWRST;
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| 79 | HAL_Delay(100);
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| 80 | i2cHandle->Instance->CR1 &= ~I2C_CR1_SWRST;
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| 81 | /* USER CODE END I2C1_MspInit 0 */
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| 82 |
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| 83 | __HAL_RCC_GPIOB_CLK_ENABLE();
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| 84 | /**I2C1 GPIO Configuration
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| 85 | PB6 ------> I2C1_SCL
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| 86 | PB7 ------> I2C1_SDA
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| 87 | */
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| 88 | GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9;
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| 89 | GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
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| 90 | GPIO_InitStruct.Pull = GPIO_PULLUP;
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| 91 | GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
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| 92 | GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
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| 93 | HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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| 94 |
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| 95 | /* I2C1 clock enable */
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| 96 | __HAL_RCC_I2C1_CLK_ENABLE();
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| 97 | /* USER CODE BEGIN I2C1_MspInit 1 */
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| 98 |
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| 99 | /* USER CODE END I2C1_MspInit 1 */
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| 100 | }
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| 101 | }
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| 102 |
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| 103 | void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
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| 104 | {
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| 105 |
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| 106 | if(i2cHandle->Instance==I2C1)
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| 107 | {
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| 108 | /* USER CODE BEGIN I2C1_MspDeInit 0 */
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| 109 |
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| 110 | /* USER CODE END I2C1_MspDeInit 0 */
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| 111 | /* Peripheral clock disable */
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| 112 | __HAL_RCC_I2C1_CLK_DISABLE();
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| 113 |
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| 114 | /**I2C1 GPIO Configuration
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| 115 | PB6 ------> I2C1_SCL
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| 116 | PB7 ------> I2C1_SDA
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| 117 | */
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| 118 | HAL_GPIO_DeInit(GPIOB, GPIO_PIN_6);
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| 119 |
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| 120 | HAL_GPIO_DeInit(GPIOB, GPIO_PIN_7);
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| 121 |
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| 122 | /* USER CODE BEGIN I2C1_MspDeInit 1 */
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| 123 |
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| 124 | /* USER CODE END I2C1_MspDeInit 1 */
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| 125 | }
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| 126 | }
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| 127 |
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| 128 | /* USER CODE BEGIN 1 */
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| 129 |
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| 130 | /* USER CODE END 1 */
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| 131 |
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| 132 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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