【花雕学编程】Arduino动手做（245）---DS3231 高精度时钟模块之读取和写入 24C32 EEPROM 简单

/*
  【Arduino】189种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验二百四十五：DS3231 高精度时钟模块  IIC/I2C接口 实时计时传感器
  项目之二：读取和写入 24C32 EEPROM
*/

#include "Arduino.h"
#include "Wire.h"
#include "uEEPROMLib.h"

// 创建 EEPROM 实例，I2C 地址为 0x57
uEEPROMLib eeprom(0x57);

void setup() {
    Serial.begin(9600);  // 初始化串口通信
    Wire.begin();  // 初始化 I2C 通信

    // 定义存储的数据
    int inttmp = 32123;  // 整型数据
    float floattmp = 3.1416;  // 浮点型数据
    char chartmp = 'A';  // 单个字符
    char c_string[] = "https://mc.dfrobot.com.cn";  // 长字符串
    int string_length = strlen(c_string);  // 计算字符串长度

    Serial.println("写进存储记忆......");

    // **存储整型数据**
    if (!eeprom.eeprom_write(0, inttmp)) {
        Serial.println("Failed to store int.");
    } else {
        Serial.println("int was stored correctly.");
    }

    // **存储浮点型数据**
    if (!eeprom.eeprom_write(4, floattmp)) {
        Serial.println("Failed to store float.");
    } else {
        Serial.println("float was stored correctly.");
    }

    // **存储单字符**
    if (!eeprom.eeprom_write(8, chartmp)) {
        Serial.println("Failed to store char.");
    } else {
        Serial.println("char was stored correctly.");
    }

    // **存储长字符串**（从地址 33 开始，未对齐 EEPROM 32 字节页）
    if (!eeprom.eeprom_write(33, (byte *)c_string, string_length)) {
        Serial.println("Failed to store string.");
    } else {
        Serial.println("string was stored correctly.");
    }

    Serial.println("\nReading memory...");

    // **读取并打印存储数据**
    Serial.print("int: ");
    eeprom.eeprom_read(0, &inttmp);
    Serial.println(inttmp);

    Serial.print("float: ");
    eeprom.eeprom_read(4, &floattmp);
    Serial.println((float)floattmp);

    Serial.print("char: ");
    eeprom.eeprom_read(8, &chartmp);
    Serial.println(chartmp);

    Serial.print("string: ");
    eeprom.eeprom_read(33, (byte *)c_string, string_length);
    Serial.println(c_string);

    Serial.println();
}

void loop() {
    // EEPROM 只需在 setup() 进行读写，loop() 为空
}