Software ConfigurationRequired Libraries:Sample Code: cpp 复制代码#include <Wire.h>
#include <ESP8266WiFi.h>
#define SDA_PIN 4 // GPIO4
#define SCL_PIN 5 // GPIO5
#define EEPROM_ADDRESS 0x50 // Default I2C address for EV24C512A
void setup() {
// Initialize I2C communication
Wire.begin(SDA_PIN, SCL_PIN);
// Initialize Serial for debugging
Serial.begin(115200);
// Initialize Wi-Fi
WiFi.begin("yourSSID", "yourPASSWORD");
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi...");
}
Serial.println("Connected to WiFi");
// Example: Write data to EEPROM
writeEEPROM(0x00, 0x42);
// Example: Read data from EEPROM
byte value = readEEPROM(0x00);
Serial.print("Read value: ");
Serial.println(value, HEX);
}
void loop() {
// Your main code
}
void writeEEPROM(int address, byte data) {
Wire.beginTransmission(EEPROM_ADDRESS);
Wire.write((int)(address >> 8)); // MSB
Wire.write((int)(address & 0xFF)); // LSB
Wire.write(data);
Wire.endTransmission();
delay(5); // EEPROM write delay
}
byte readEEPROM(int address) {
Wire.beginTransmission(EEPROM_ADDRESS);
Wire.write((int)(address >> 8)); // MSB
Wire.write((int)(address & 0xFF)); // LSB
Wire.endTransmission();
Wire.requestFrom(EEPROM_ADDRESS, 1);
if (Wire.available()) {
return Wire.read();
}
return 0xFF; // Return 0xFF if nothing is read
}
Explanation:Wire.begin(SDA_PIN, SCL_PIN) initializes the I2C communication on the specified GPIO pins. WiFi.begin("yourSSID", "yourPASSWORD") connects the ESP8266 to your Wi-Fi network. The writeEEPROM and readEEPROM functions handle writing to and reading from the EEPROM.
Ensure you have the ESP8266 and Wire libraries installed in your Arduino IDE. Adjust the GPIO pins if needed, depending on your specific ESP8266 module and pin configuration ( Espressif) ( Espressif). Schematic Diagram:Components:Schematic Connections:scss 复制代码 +3.3V
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[ ]
0.1μF
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+-------+
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(Vcc) (GND)
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+3.3V----->Vcc GND----->GND
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[4.7kΩ] |
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+-------+ |
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(SCL) |
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[4.7kΩ] |
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(SDA) |
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+--------------+
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(A0) --+-- (A1) --+-- (A2)
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(GND) (GND)
+-------------------+
| EV24C512A EEPROM |
+-------------------+
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(WP)
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(GND)
Detailed Pin Connections:Notes:The pull-up resistors are necessary for proper I2C communication. Ensure the power supply is stable and within the voltage specifications of both the EEPROM and ESP8266. Double-check the connections to avoid damage to the components.
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