Seeprom library

Seeprom is an Arduino library for interfacing to small electrically erasable programmable read-only memories (e.g. the 24Cxx series) on the I2C bus.

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How to connect the EEPROM to the Arduino board

The EEPROM must be connected to Arduino by considering the following configuration.

EEPROM	Arduino
pin 1 [GND]	GND
pin 2 [Vcc]	5v
pin 3 [SDA]	Analog pin 4
pin 4 [SCL]	Analog pin 5
pin 5 [WP]	GND (to not hardware protect data)
pin 6 [A0]	GND
pin 7 [A1]	GND
pin 8 [A2]	GND

List of methods

• Seeprom(byte devaddr, unsigned length)
• void writeByte(int epaddr, byte data)
• void writePage(int epaddr, const byte * data, byte length)
• int readByte(int epaddr)
• int readBuffer(int epaddr, byte * buffer, byte length)
• void dump(int epaddr)
• void writeInt(int epaddr, int int16)
• int readInt(int epaddr)
• void writeLong(int epaddr, long long32)
• long readLong(int epaddr)
• void clearPage(int epaddr)
• void clearAll()

Example

#include <Seeprom.h>

const byte DEVADDR = 0x50; //Address of the EEPROM
Seeprom eeprom(DEVADDR, 2048); //create the eeprom object

value = eeprom.readInt(0); //Read integer from EEPROM at address 0x00
eeprom.writeInt(0,value+2); //Write integer value+2 at the same address