I2C clock not generated on SCK pin

[AVINASH PATHAK]

I was working on i2c using STM32L476 nucleo board.I used stm32cube to make a code for keil.When I generated the code and programmed it in the board i found that the oscilloscope was not showing any clock on it .Oscilloscope's channel1 was connected to to GND AND PB6 pin of board.After that I put a function call HAL_I2C_Init(&hi2c1) in main() before the while() loop.

oscilloscope only showed constant high of 3.3Volt.Please help to solve the problem.

[GenuineDeveloper]

Insufficient information. Can your provide the I2c communication code structure you have written. I have not worked with HAL. Still that piece of information could be vital.

[AVINASH PATHAK]

I am all the source files of the projects

[AVINASH PATHAK]

Sorry ,I am attaching all source files

/**
 ******************************************************************************
 * @file : main.c
 * @brief : Main program body
 ******************************************************************************
 ** This notice applies to any and all portions of this file
 * that are not between comment pairs USER CODE BEGIN and
 * USER CODE END. Other portions of this file, whether 
 * inserted by the user or by software development tools
 * are owned by their respective copyright owners.
 *
 * COPYRIGHT(c) 2018 STMicroelectronics
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * 3. Neither the name of STMicroelectronics nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 ******************************************************************************
 */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32l4xx_hal.h"
 
/* USER CODE BEGIN Includes */
 
/* USER CODE END Includes */
 
/* Private variables ---------------------------------------------------------*/
I2C_HandleTypeDef hi2c1;
 
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
 
/* USER CODE END PV */
 
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_I2C1_Init(void);
 
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
 
/* USER CODE END PFP */
 
/* USER CODE BEGIN 0 */
uint8_t buff[2]={'a','b'};
/* USER CODE END 0 */
 
/**
 * @brief The application entry point.
 *
 * @retval None
 */
int main(void)
{
 /* USER CODE BEGIN 1 */
 
 /* USER CODE END 1 */
 
 /* MCU Configuration----------------------------------------------------------*/
 
 /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
 HAL_Init();
 
 /* USER CODE BEGIN Init */
 
 /* USER CODE END Init */
 
 /* Configure the system clock */
 SystemClock_Config();
 
 /* USER CODE BEGIN SysInit */
 
 /* USER CODE END SysInit */
 
 /* Initialize all configured peripherals */
 MX_GPIO_Init();
 MX_I2C1_Init();
 /* USER CODE BEGIN 2 */
HAL_I2C_Init(&hi2c1);
 /* USER CODE END 2 */
HAL_I2C_Master_Transmit_IT(&hi2c1,0,buff,2);
 /* Infinite loop */
 /* USER CODE BEGIN WHILE */
 while (1)
 {
 
 /* USER CODE END WHILE */
 
 /* USER CODE BEGIN 3 */
 
 }
 /* USER CODE END 3 */
 
}
 
/**
 * @brief System Clock Configuration
 * @retval None
 */
void SystemClock_Config(void)
{
 
 RCC_OscInitTypeDef RCC_OscInitStruct;
 RCC_ClkInitTypeDef RCC_ClkInitStruct;
 RCC_PeriphCLKInitTypeDef PeriphClkInit;
 
 /**Initializes the CPU, AHB and APB busses clocks 
 */
 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
 RCC_OscInitStruct.HSIState = RCC_HSI_ON;
 RCC_OscInitStruct.HSICalibrationValue = 16;
 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
 RCC_OscInitStruct.PLL.PLLN = 10;
 RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7;
 RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
 RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
 {
 _Error_Handler(__FILE__, __LINE__);
 }
 
 /**Initializes the CPU, AHB and APB busses clocks 
 */
 RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
 |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
 
 if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
 {
 _Error_Handler(__FILE__, __LINE__);
 }
 
 PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_I2C1;
 PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_PCLK1;
 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
 {
 _Error_Handler(__FILE__, __LINE__);
 }
 
 /**Configure the main internal regulator output voltage 
 */
 if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
 {
 _Error_Handler(__FILE__, __LINE__);
 }
 
 /**Configure the Systick interrupt time 
 */
 HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
 
 /**Configure the Systick 
 */
 HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
 
 /* SysTick_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}
 
/* I2C1 init function */
static void MX_I2C1_Init(void)
{
 
 hi2c1.Instance = I2C1;
 hi2c1.Init.Timing = 0x10909CEC;
 hi2c1.Init.OwnAddress1 = 0;
 hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
 hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
 hi2c1.Init.OwnAddress2 = 0;
 hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
 hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
 hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
 if (HAL_I2C_Init(&hi2c1) != HAL_OK)
 {
 _Error_Handler(__FILE__, __LINE__);
 }
 
 /**Configure Analogue filter 
 */
 if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
 {
 _Error_Handler(__FILE__, __LINE__);
 }
 
 /**Configure Digital filter 
 */
 if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
 {
 _Error_Handler(__FILE__, __LINE__);
 }
 
}
 
/** Pinout Configuration
*/
static void MX_GPIO_Init(void)
{
 
 /* GPIO Ports Clock Enable */
 __HAL_RCC_GPIOB_CLK_ENABLE();
 
}
 
/* USER CODE BEGIN 4 */
 
/* USER CODE END 4 */
 
/**
 * @brief This function is executed in case of error occurrence.
 * @param file: The file name as string.
 * @param line: The line in file as a number.
 * @retval None
 */
void _Error_Handler(char *file, int line)
{
 /* USER CODE BEGIN Error_Handler_Debug */
 /* User can add his own implementation to report the HAL error return state */
 while(1)
 {
 }
 /* USER CODE END Error_Handler_Debug */
}
 
#ifdef USE_FULL_ASSERT
/**
 * @brief Reports the name of the source file and the source line number
 * where the assert_param error has occurred.
 * @param file: pointer to the source file name
 * @param line: assert_param error line source number
 * @retval None
 */
void assert_failed(uint8_t* file, uint32_t line)
{ 
 /* USER CODE BEGIN 6 */
 /* User can add his own implementation to report the file name and line number,
 tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
 /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
 
/**
 * @}
 */
 
/**
 * @}
 */
 
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

[AVINASH PATHAK]

/**
 ******************************************************************************
 * @file stm32l4xx_it.c
 * @brief Interrupt Service Routines.
 ******************************************************************************
 *
 * COPYRIGHT(c) 2018 STMicroelectronics
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * 3. Neither the name of STMicroelectronics nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 ******************************************************************************
 */
/* Includes ------------------------------------------------------------------*/
#include "stm32l4xx_hal.h"
#include "stm32l4xx.h"
#include "stm32l4xx_it.h"
 
/* USER CODE BEGIN 0 */
extern uint8_t buff[2];
/* USER CODE END 0 */
 
/* External variables --------------------------------------------------------*/
extern I2C_HandleTypeDef hi2c1;
 
/******************************************************************************/
/* Cortex-M4 Processor Interruption and Exception Handlers */ 
/******************************************************************************/
 
/**
* @brief This function handles Non maskable interrupt.
*/
void NMI_Handler(void)
{
 /* USER CODE BEGIN NonMaskableInt_IRQn 0 */
 
 /* USER CODE END NonMaskableInt_IRQn 0 */
 /* USER CODE BEGIN NonMaskableInt_IRQn 1 */
 
 /* USER CODE END NonMaskableInt_IRQn 1 */
}
 
/**
* @brief This function handles Hard fault interrupt.
*/
void HardFault_Handler(void)
{
 /* USER CODE BEGIN HardFault_IRQn 0 */
 
 /* USER CODE END HardFault_IRQn 0 */
 while (1)
 {
 /* USER CODE BEGIN W1_HardFault_IRQn 0 */
 /* USER CODE END W1_HardFault_IRQn 0 */
 }
 /* USER CODE BEGIN HardFault_IRQn 1 */
 
 /* USER CODE END HardFault_IRQn 1 */
}
 
/**
* @brief This function handles Memory management fault.
*/
void MemManage_Handler(void)
{
 /* USER CODE BEGIN MemoryManagement_IRQn 0 */
 
 /* USER CODE END MemoryManagement_IRQn 0 */
 while (1)
 {
 /* USER CODE BEGIN W1_MemoryManagement_IRQn 0 */
 /* USER CODE END W1_MemoryManagement_IRQn 0 */
 }
 /* USER CODE BEGIN MemoryManagement_IRQn 1 */
 
 /* USER CODE END MemoryManagement_IRQn 1 */
}
 
/**
* @brief This function handles Prefetch fault, memory access fault.
*/
void BusFault_Handler(void)
{
 /* USER CODE BEGIN BusFault_IRQn 0 */
 
 /* USER CODE END BusFault_IRQn 0 */
 while (1)
 {
 /* USER CODE BEGIN W1_BusFault_IRQn 0 */
 /* USER CODE END W1_BusFault_IRQn 0 */
 }
 /* USER CODE BEGIN BusFault_IRQn 1 */
 
 /* USER CODE END BusFault_IRQn 1 */
}
 
/**
* @brief This function handles Undefined instruction or illegal state.
*/
void UsageFault_Handler(void)
{
 /* USER CODE BEGIN UsageFault_IRQn 0 */
 
 /* USER CODE END UsageFault_IRQn 0 */
 while (1)
 {
 /* USER CODE BEGIN W1_UsageFault_IRQn 0 */
 /* USER CODE END W1_UsageFault_IRQn 0 */
 }
 /* USER CODE BEGIN UsageFault_IRQn 1 */
 
 /* USER CODE END UsageFault_IRQn 1 */
}
 
/**
* @brief This function handles System service call via SWI instruction.
*/
void SVC_Handler(void)
{
 /* USER CODE BEGIN SVCall_IRQn 0 */
 
 /* USER CODE END SVCall_IRQn 0 */
 /* USER CODE BEGIN SVCall_IRQn 1 */
 
 /* USER CODE END SVCall_IRQn 1 */
}
 
/**
* @brief This function handles Debug monitor.
*/
void DebugMon_Handler(void)
{
 /* USER CODE BEGIN DebugMonitor_IRQn 0 */
 
 /* USER CODE END DebugMonitor_IRQn 0 */
 /* USER CODE BEGIN DebugMonitor_IRQn 1 */
 
 /* USER CODE END DebugMonitor_IRQn 1 */
}
 
/**
* @brief This function handles Pendable request for system service.
*/
void PendSV_Handler(void)
{
 /* USER CODE BEGIN PendSV_IRQn 0 */
 
 /* USER CODE END PendSV_IRQn 0 */
 /* USER CODE BEGIN PendSV_IRQn 1 */
 
 /* USER CODE END PendSV_IRQn 1 */
}
 
/**
* @brief This function handles System tick timer.
*/
void SysTick_Handler(void)
{
 /* USER CODE BEGIN SysTick_IRQn 0 */
 
 /* USER CODE END SysTick_IRQn 0 */
 HAL_IncTick();
 HAL_SYSTICK_IRQHandler();
 /* USER CODE BEGIN SysTick_IRQn 1 */
 
 /* USER CODE END SysTick_IRQn 1 */
}
 
/******************************************************************************/
/* STM32L4xx Peripheral Interrupt Handlers */
/* Add here the Interrupt Handlers for the used peripherals. */
/* For the available peripheral interrupt handler names, */
/* please refer to the startup file (startup_stm32l4xx.s). */
/******************************************************************************/
 
/**
* @brief This function handles I2C1 event interrupt.
*/
void I2C1_EV_IRQHandler(void)
{
 /* USER CODE BEGIN I2C1_EV_IRQn 0 */
if (hi2c1.Instance->ISR & (I2C_FLAG_BERR | I2C_FLAG_ARLO | I2C_FLAG_OVR)) {
 HAL_I2C_ER_IRQHandler(&hi2c1);
 } else {
 HAL_I2C_EV_IRQHandler(&hi2c1);
 }
 /* USER CODE END I2C1_EV_IRQn 0 */
 HAL_I2C_EV_IRQHandler(&hi2c1);
 /* USER CODE BEGIN I2C1_EV_IRQn 1 */
 
 /* USER CODE END I2C1_EV_IRQn 1 */
}
 
/* USER CODE BEGIN 1 */
 
/* USER CODE END 1 */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

[AVINASH PATHAK]

/**
 ******************************************************************************
 * File Name : stm32l4xx_hal_msp.c
 * Description : This file provides code for the MSP Initialization 
 * and de-Initialization codes.
 ******************************************************************************
 ** This notice applies to any and all portions of this file
 * that are not between comment pairs USER CODE BEGIN and
 * USER CODE END. Other portions of this file, whether 
 * inserted by the user or by software development tools
 * are owned by their respective copyright owners.
 *
 * COPYRIGHT(c) 2018 STMicroelectronics
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * 3. Neither the name of STMicroelectronics nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 ******************************************************************************
 */
/* Includes ------------------------------------------------------------------*/
#include "stm32l4xx_hal.h"
 
extern void _Error_Handler(char *, int);
/* USER CODE BEGIN 0 */
 
/* USER CODE END 0 */
/**
 * Initializes the Global MSP.
 */
void HAL_MspInit(void)
{
 /* USER CODE BEGIN MspInit 0 */
 
 /* USER CODE END MspInit 0 */
 
 __HAL_RCC_SYSCFG_CLK_ENABLE();
 __HAL_RCC_PWR_CLK_ENABLE();
 
 HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
 
 /* System interrupt init*/
 /* MemoryManagement_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(MemoryManagement_IRQn, 0, 0);
 /* BusFault_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(BusFault_IRQn, 0, 0);
 /* UsageFault_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(UsageFault_IRQn, 0, 0);
 /* SVCall_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(SVCall_IRQn, 0, 0);
 /* DebugMonitor_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(DebugMonitor_IRQn, 0, 0);
 /* PendSV_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(PendSV_IRQn, 0, 0);
 /* SysTick_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
 
 /* USER CODE BEGIN MspInit 1 */
 
 /* USER CODE END MspInit 1 */
}
 
void HAL_I2C_MspInit(I2C_HandleTypeDef* hi2c)
{
 
 GPIO_InitTypeDef GPIO_InitStruct;
 if(hi2c->Instance==I2C1)
 {
 /* USER CODE BEGIN I2C1_MspInit 0 */
 
 /* USER CODE END I2C1_MspInit 0 */
 
 /**I2C1 GPIO Configuration 
 PB6 ------> I2C1_SCL
 PB7 ------> I2C1_SDA 
 */
 GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
 GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
 GPIO_InitStruct.Pull = GPIO_PULLUP;
 GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
 GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
 HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
 
 /* Peripheral clock enable */
 __HAL_RCC_I2C1_CLK_ENABLE();
 /* I2C1 interrupt Init */
 HAL_NVIC_SetPriority(I2C1_EV_IRQn, 0, 0);
 HAL_NVIC_EnableIRQ(I2C1_EV_IRQn);
 /* USER CODE BEGIN I2C1_MspInit 1 */
 
 /* USER CODE END I2C1_MspInit 1 */
 }
 
}
 
void HAL_I2C_MspDeInit(I2C_HandleTypeDef* hi2c)
{
 
 if(hi2c->Instance==I2C1)
 {
 /* USER CODE BEGIN I2C1_MspDeInit 0 */
 
 /* USER CODE END I2C1_MspDeInit 0 */
 /* Peripheral clock disable */
 __HAL_RCC_I2C1_CLK_DISABLE();
 
 /**I2C1 GPIO Configuration 
 PB6 ------> I2C1_SCL
 PB7 ------> I2C1_SDA 
 */
 HAL_GPIO_DeInit(GPIOB, GPIO_PIN_6|GPIO_PIN_7);
 
 /* I2C1 interrupt DeInit */
 HAL_NVIC_DisableIRQ(I2C1_EV_IRQn);
 /* USER CODE BEGIN I2C1_MspDeInit 1 */
 
 /* USER CODE END I2C1_MspDeInit 1 */
 }
 
}
 
/* USER CODE BEGIN 1 */
 
/* USER CODE END 1 */
 
/**
 * @}
 */
 
/**
 * @}
 */
 
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/