STM32 (基于HAL库) 硬件IIC读写任意AT24CXX芯片

#include "24cxx.h"

#include "myiic.h"

#include "i2c.h"

//初始化IIC接口



#define AT24CXX_HANDLE        (&hi2c1)        //IIC接口

#define AT24C_DEV_ADDR  (0XA0) //设备地址



void AT24CXX_Init(void)

{

        //IIC_Init();//IIC初始化

        AT24CXX_Check();

}



/*****************************************

函数名：void AT24CXX_Write(uint16_t WriteAddr,uint8_t *pBuffer,uint16_t NumToWrite)

参数：WriteAddr :要写入数据的地址  pBuffer：要写入的数据的首地址 NumToWrite：要写入数据的长度

功能描述：从指定地址开始写入多个字节数据

返回值：无

*****************************************/

void AT24CXX_Write(uint16_t WriteAddr,uint8_t *pBuffer,uint16_t NumToWrite)

{

        if(EE_TYPE < AT24C16)

                HAL_I2C_Mem_Write(AT24CXX_HANDLE,AT24C_DEV_ADDR,WriteAddr,I2C_MEMADD_SIZE_8BIT,pBuffer,NumToWrite,HAL_MAX_DELAY);

        else

                HAL_I2C_Mem_Write(AT24CXX_HANDLE,AT24C_DEV_ADDR,WriteAddr,I2C_MEMADD_SIZE_16BIT,pBuffer,NumToWrite,HAL_MAX_DELAY);

}

/*****************************************

函数名：AT24CXX_Read(uint16_t ReadAddr,uint8_t *pBuffer,uint16_t NumToRead)

参数： ReadAddr：要读取数据的地址 pBuffer：回填数据首地址 NumToRead:数据长度

功能描述：从指定地址开始读取多个个字节数据

返回值：无

*****************************************/

void AT24CXX_Read(uint16_t ReadAddr,uint8_t *pBuffer,uint16_t NumToRead)

{

        if(EE_TYPE < AT24C16)

                HAL_I2C_Mem_Read(AT24CXX_HANDLE,AT24C_DEV_ADDR,ReadAddr,I2C_MEMADD_SIZE_8BIT,pBuffer,NumToRead,HAL_MAX_DELAY);

        else

                HAL_I2C_Mem_Read(AT24CXX_HANDLE,AT24C_DEV_ADDR,ReadAddr,I2C_MEMADD_SIZE_16BIT,pBuffer,NumToRead,HAL_MAX_DELAY);

} 

/*****************************************

函数名：uint8_t AT24CXX_Check(void)

参数：无

功能描述：检查AT24CXX是否正常，这里用了24XX的最后一个地址(255)来存储标志字.如果用其他24C系列,这个地址要修改

返回值：检测成功返回0 失败返回1

*****************************************/

uint8_t AT24CXX_Check(void)

{

        uint8_t temp;

        uint8_t data = 0XAB;

        AT24CXX_Read(EE_TYPE,&temp,1);//避免每次开机都写AT24CXX                           

        if(temp != 0XAB)

                return 1;                   

        else//排除第一次初始化的情况

        {

                AT24CXX_Write(EE_TYPE,&data,1);

            AT24CXX_Read(EE_TYPE,&temp,1);;          

                if(temp != 0XAB)

                        return 1;

        }

        return 0;                                                                                          

}

#ifndef AT24CXX_H__

#define AT24CXX_H__

/*****************************************

                                                本驱动文件仅适配HAL库版本

******************************************/

#include "stm32f1xx_hal.h"        //链接HAL库



#define AT24C01                127

#define AT24C02                255

#define AT24C04                511

#define AT24C08                1023

#define AT24C16                2047

#define AT24C32                4095

#define AT24C64          8191

#define AT24C128        16383

#define AT24C256        32767  

//我使用的是AT24C02

#define EE_TYPE AT24C02



void AT24CXX_Init(void);



void AT24CXX_Write(uint16_t WriteAddr,uint8_t *pBuffer,uint16_t NumToWrite);



void AT24CXX_Read(uint16_t ReadAddr,uint8_t *pBuffer,uint16_t NumToRead);



uint8_t AT24CXX_Check(void);



#endif

/* USER CODE BEGIN Header */

/**

  ******************************************************************************

  * [url=home.php?mod=space&uid=288409]@file[/url]           : main.c

  * [url=home.php?mod=space&uid=247401]@brief[/url]          : Main program body

  ******************************************************************************

  * @attention

  *

  * Copyright (c) 2022 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 "main.h"

#include "i2c.h"

#include "usart.h"

#include "gpio.h"



/* Private includes ----------------------------------------------------------*/

/* USER CODE BEGIN Includes */

#include "HAL_24cxx.h"

#include <stdio.h>

/* USER CODE END Includes */



/* Private typedef -----------------------------------------------------------*/

/* USER CODE BEGIN PTD */



/* USER CODE END PTD */



/* Private define ------------------------------------------------------------*/

/* USER CODE BEGIN PD */

/* USER CODE END PD */



/* Private macro -------------------------------------------------------------*/

/* USER CODE BEGIN PM */



/* USER CODE END PM */



/* Private variables ---------------------------------------------------------*/



/* USER CODE BEGIN PV */



/* USER CODE END PV */



/* Private function prototypes -----------------------------------------------*/

void SystemClock_Config(void);

/* USER CODE BEGIN PFP */



/* USER CODE END PFP */



/* Private user code ---------------------------------------------------------*/

/* USER CODE BEGIN 0 */



/*****************************************

函数名：

参数：无

功能描述：printf输出重定向到串口1

返回值：

*****************************************/

int fputc(int ch,FILE *f){

 uint8_t temp[1]={ch};

 HAL_UART_Transmit(&huart1,temp,1,2);

 return ch;

}



/* USER CODE END 0 */



/**

  * @brief  The application entry point.

  * @retval int

  */

int main(void)

{

  /* USER CODE BEGIN 1 */

        uint8_t buff[6];

        bool res;

  /* 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();

  MX_USART1_UART_Init();

  /* USER CODE BEGIN 2 */

        printf("测试程序开始\r\n");

        

        res = AT24CXX_Check();

        if(!res)

        {

                printf("AT24CXX OK!\r\n");

        }

        else

        {

                printf("AT24CXX ERROR!\r\n");

        }

        HAL_Delay(1000);

        AT24CXX_Write(0,(uint8_t *)"hello",5);



        AT24CXX_Read(0,buff,5);

        

        printf("buff:%s\r\n",buff);

        

        printf("测试程序结束\r\n");

  /* USER CODE END 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 = {0};

  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};



  /** Initializes the RCC Oscillators according to the specified parameters

  * in the RCC_OscInitTypeDef structure.

  */

  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;

  RCC_OscInitStruct.HSEState = RCC_HSE_ON;

  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;

  RCC_OscInitStruct.HSIState = RCC_HSI_ON;

  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;

  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;

  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)

  {

    Error_Handler();

  }



  /** Initializes the CPU, AHB and APB buses 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_2) != HAL_OK)

  {

    Error_Handler();

  }

}



/* USER CODE BEGIN 4 */



/* USER CODE END 4 */



/**

  * @brief  This function is executed in case of error occurrence.

  * @retval None

  */

void Error_Handler(void)

{

  /* USER CODE BEGIN Error_Handler_Debug */

  /* User can add his own implementation to report the HAL error return state */

  __disable_irq();

  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,

     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

  /* USER CODE END 6 */

}

#endif /* USE_FULL_ASSERT */