How to make I2C work?

[DSimo.19]

Hi ,

I'm currently working on a STM32F103C8T6 and i need to use the I2C port.

I use the STM32 cube MX software to create the project. (like that all my ports are set).

I use STM32 System Worckbench to code.

My problem is that i don't achieve to communicate with I2C in master mode using the hal_library and i don't know why !

Could you help me ?

[DSimo.19]

/**
 ******************************************************************************
 * @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 "stm32f1xx_hal.h"
 
/* USER CODE BEGIN Includes */
 
/* USER CODE END Includes */
 
/* Private variables ---------------------------------------------------------*/
I2C_HandleTypeDef hi2c1;
DMA_HandleTypeDef hdma_i2c1_rx;
DMA_HandleTypeDef hdma_i2c1_tx;
 
UART_HandleTypeDef huart1;
 
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
#define AM2315_I2CADDR 0x5C<<1
#define AM2315_READREG 0x03
 
 
/* USER CODE END PV */
 
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_USART1_UART_Init(void);
static void MX_I2C1_Init(void);
 
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
 
/* USER CODE END PFP */
 
/* USER CODE BEGIN 0 */
 
/* 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_DMA_Init();
 MX_USART1_UART_Init();
 MX_I2C1_Init();
 /* USER CODE BEGIN 2 */
 
 /* USER CODE END 2 */
 
 /* Infinite loop */
 /* USER CODE BEGIN WHILE */
 while (1)
 {
	 uint8_t reply[10];
	 uint8_t byte[2];
 
	 // Wake up the sensor
	 while(HAL_I2C_Master_Transmit(&hi2c1,AM2315_I2CADDR,0,0,100)!=HAL_OK)HAL_UART_Transmit(&huart1,(uint8_t*) "NOPE \r\n", 7, HAL_MAX_DELAY);
 
	 byte[0]=0;
	 byte[1]=4;
 
	 // OK lets ready!
	 while(HAL_I2C_Master_Transmit(&hi2c1,AM2315_I2CADDR,byte,2,100)!=HAL_OK)HAL_UART_Transmit(&huart1,(uint8_t*) "NOPE \r\n", 7, HAL_MAX_DELAY);
 
	 HAL_Delay(10); // add delay between request and actual read!
 
	 HAL_I2C_Master_Receive(&hi2c1,AM2315_I2CADDR,reply,8,100);
 
 
	 if (reply[0] != AM2315_READREG) HAL_UART_Transmit(&huart1,(uint8_t*) "Error 1 ! \r\n", 12, HAL_MAX_DELAY);//return false;
	 if (reply[1] != 4) HAL_UART_Transmit(&huart1,(uint8_t*) "Error 2 ! \r\n", 12, HAL_MAX_DELAY);//return false; // bytes req'd
 
	 int humidity = reply[2];
	 humidity *= 256;
	 humidity += reply[3];
	 humidity /= 10;
	 //Serial.print("H"); Serial.println(humidity);
 
	 int temp = reply[4] & 0x7F;
	 temp *= 256;
	 temp += reply[5];
	 temp /= 10;
	 //Serial.print("T"); Serial.println(temp);
 
	 // change sign
	 if (reply[4] >> 7) temp = -temp;
 
	 HAL_Delay(1000);
 /* 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;
 
 /**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_DIV2;
 RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL7;
 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_DIV2;
 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
 
 if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != 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.ClockSpeed = 100000;
 hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
 hi2c1.Init.OwnAddress1 = 0;
 hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
 hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
 hi2c1.Init.OwnAddress2 = 0;
 hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
 hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
 if (HAL_I2C_Init(&hi2c1) != HAL_OK)
 {
 _Error_Handler(__FILE__, __LINE__);
 }
 
 
 __HAL_RCC_I2C1_CLK_ENABLE();
 __HAL_RCC_I2C1_FORCE_RESET();
 __HAL_RCC_I2C1_RELEASE_RESET();
}
 
/* USART1 init function */
static void MX_USART1_UART_Init(void)
{
 
 huart1.Instance = USART1;
 huart1.Init.BaudRate = 115200;
 huart1.Init.WordLength = UART_WORDLENGTH_8B;
 huart1.Init.StopBits = UART_STOPBITS_1;
 huart1.Init.Parity = UART_PARITY_NONE;
 huart1.Init.Mode = UART_MODE_TX_RX;
 huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
 huart1.Init.OverSampling = UART_OVERSAMPLING_16;
 if (HAL_UART_Init(&huart1) != HAL_OK)
 {
 _Error_Handler(__FILE__, __LINE__);
 }
 
}
 
/** 
 * Enable DMA controller clock
 */
static void MX_DMA_Init(void) 
{
 /* DMA controller clock enable */
 __HAL_RCC_DMA1_CLK_ENABLE();
 
 /* DMA interrupt init */
 /* DMA1_Channel6_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(DMA1_Channel6_IRQn, 0, 0);
 HAL_NVIC_EnableIRQ(DMA1_Channel6_IRQn);
 /* DMA1_Channel7_IRQn interrupt configuration */
 HAL_NVIC_SetPriority(DMA1_Channel7_IRQn, 0, 0);
 HAL_NVIC_EnableIRQ(DMA1_Channel7_IRQn);
 
}
 
/** Pinout Configuration
*/
static void MX_GPIO_Init(void)
{
 
 /* GPIO Ports Clock Enable */
 __HAL_RCC_GPIOA_CLK_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****/

This is my code