HAL库 EEPROM字符串读写

配置I2C 和串口
串口的配置就不做详细介绍

 1 #include "stm32f1xx_hal.h"
#include "Eeprom.h"
#include "string.h"
extern I2C_HandleTypeDef hi2c1;
/*------д×Ö·û´®µ½EEPROMÖÐ*/
void I2C_eepWritePage(uint8_t address,char * str){
    int len     = 0;//ÓÃÀ´¼ÆËãд½øµÄ×Ö·û´®³¤¶È
    int status ;    //ÓÃÀ´´æ·Åд½øÈ¥µÄ״̬
    int page = 0;   //ÓÃÀ´±£´æÒ³Êý
    int k =       0;//ÓÃÀ´ÓÃ×öforÑ­»· ҳд
    len = strlen(str)+1;//¼Ó1 °Ñ½áÊø·ûÒ²°üÀ¨½øÈ¥
    if(len <= 7){       //Èç¹û×Ö½Ú³¤¶ÈСÓÚ8¸ö×Ö½Ú ÄÇô¾Í¿ÉÒÔÖ±½Ó´æ·ÅÎÞÐè·ÖÒ³
        status = HAL_I2C_Mem_Write(&hi2c1,0xA0,address,I2C_MEMADD_SIZE_8BIT,str,len,200);//0xa0дÃüÁî
        if(status == HAL_OK){
            printf("дÈë³É¹¦£¡ 
дÈëµÄÊý¾Ý³¤¶ÈΪ:%d
дÈëµÄÊý¾ÝÄÚÈÝΪ:%s",len,str);
        }
    }else{//Èç¹ûдÈëµÄ×Ö½Ú´óÓÚ8¸ö×Ö½ÚÔò·ÖÒ³±£´æ
        page = len%8 > 0 ? (len/8+1): (len/8);//ÓÃÀ´¼ÆËãÓжàÉÙÒ³Êý¾Ý ÈýÔªÔËËã 
        for(k = 0; k<page; k++){
            while(HAL_I2C_IsDeviceReady(&hi2c1,0xA0,3,500));//²â溯Êý ÅжÏeepromÊÇ·ñ´¦ÔÚæµ״̬
            status = HAL_I2C_Mem_Write(&hi2c1,0xA0,address+k*8,
            I2C_MEMADD_SIZE_8BIT,str+8*k,(len-8*k>=8)?8:(len-8*k),200);
            HAL_Delay(10);
            if(status == HAL_OK){
                printf("±£´æµÚ:%dÒ³µÄµØÖ·:%d
",k+1,address+8*k);//address+8*k
            }
            /*---->Ò»¸öÒ»¸ö×Ö½Úд*/
            while(HAL_I2C_IsDeviceReady(&hi2c1,0xA0,3,500)){
                HAL_I2C_Mem_Write(&hi2c1,0xA0,address+k,I2C_MEMADD_SIZE_8BIT,str+k,1,200);
                HAL_Delay(10);    
            }
        }        
    }
}
uint8_t* I2c_eep_Read(uint8_t address, uint8_t * data){
    uint8_t d = 0;                    //ÓÃ×÷forÑ­»·±äÁ¿´æ·Å±äÁ¿
    uint8_t Read_status = 0;//ÓÃÀ´´æ·Å¶ÁÈ¡µÄ״ֵ̬
    do{
        while(HAL_I2C_IsDeviceReady(&hi2c1,0xA1,3,5));//²â溯Êý
        Read_status = HAL_I2C_Mem_Read(&hi2c1,0xA1,address,I2C_MEMADD_SIZE_8BIT,&data[d],1,200);
        if(Read_status == HAL_OK){
            d             ++;
            address ++;
        }else{
            printf("¶ÁÈ¡µ½µÚ%d¸ö×Ö½Ú³öÏÖ´íÎó:%d
",d-1,Read_status);
        }
        HAL_Delay(10);
    }while(data[d-1] != '' && d<100);
    return data;
}

主函数代码
void main(){
　　　　　printf("
1-------------------eeprom  start
");　
　　　　　I2C_eepWritePage(0x00,"你好，我是新写入的数据！我写了很多内容今天的天气很多变");
        uint8_t data[100] = {0};
        HAL_Delay(100);
        printf("读取到的数据:%s",I2c_eep_Read(0x00,data));//eeprom  读取数据
}

实现结果