File content as of revision 0:51d7f8d33957:

#include "mbed.h"
 

int address = 0xA0;
 

DigitalOut VCC(PB_5);
DigitalOut GND(PB_13);
I2C i2c(PB_4, PA_8);
 
DigitalOut myled(LED1);
 
Serial pc(SERIAL_TX, SERIAL_RX);


void writeEEPROM(int address, unsigned int eeaddress, char *data, int size);
void readEEPROM(int address, unsigned int eeaddress, char *data, int size);
 
 
// this function has 63 bytes write limit
void writeEEPROM(int address, unsigned int eeaddress, char *data, int size)
{
    char i2cBuffer[size + 2];
    i2cBuffer[0] = (unsigned char)(eeaddress >> 8); // MSB
    i2cBuffer[1] = (unsigned char)(eeaddress & 0xFF); // LSB
 
    for (int i = 0; i < size; i++) {
        i2cBuffer[i + 2] = data[i];
    }
 
    int result = i2c.write(address, i2cBuffer, size + 2, false);
    wait_ms(6);
}
 
// this function has no read limit
void readEEPROM(int address, unsigned int eeaddress, char *data, int size)
{
    char i2cBuffer[2];
    i2cBuffer[0] = (unsigned char)(eeaddress >> 8); // MSB
    i2cBuffer[1] = (unsigned char)(eeaddress & 0xFF); // LSB
 
    // Reset eeprom pointer address
    int result = i2c.write(address, i2cBuffer, 2, false);
    wait_ms(6);
 
    // Read eeprom
    i2c.read(address, data, size);
    wait_ms(6);
}
    
 
int main()
{
 
    VCC=1;
    GND=0;
    
    pc.printf("I2C EEPROM started...\n");
 
    int pointerAdddress = 0;
    
    wait_ms(3000);
 
    // write some data on eeprom
    char writeData[] = {"1234567890"}; // the text length must be below 64 bytes
    char writeDataLen = 0;
    do {writeDataLen++;} while (writeData[writeDataLen]); // calculate the text length
    
    writeEEPROM(address, pointerAdddress, writeData, writeDataLen);
 
    pc.printf("Data written: %s\n", writeData);
    
 
    // read the data back
    char data_read[writeDataLen];
    readEEPROM(address, pointerAdddress, data_read, writeDataLen);
 
    pc.printf("Data read: %s\n", data_read);
}