File content as of revision 0:9ce639d07eeb:

/*

Program to read temperature and humidity over I2C
from the GE ChipCap2 sensor, using the MBED LPC11U24 board.

Autor: Mario Baldini <mario@baldini.systems>
2014/08

!!! NOT WORKING !!!
This reference program for Arduino DO work: http://hastebin.com/tilolukave.go

If you locate the error in this mbed version, 
please e-mail me at mario@baldini.systems

Reading the output (in linux): sudo screen /dev/ttyACM0 115200


*/

#include "mbed.h"

Serial pc(USBTX, USBRX);
I2C i2c(p28,p27);   //sda,scl


int main() {
    pc.baud(115200);
    pc.printf("begin\r\n");

    int address = 0x28;
    char data[4];
    data[0] = 0x00;   
    data[1] = 0x00;
    data[2] = 0x00;
    data[3] = 0x00;
    
    char data_write[3];
    data_write[0] = 0xA0;
    data_write[1] = 0x00;
    data_write[2] = 0x00;
    
    
    i2c.frequency(400000);


    while(true) {
        pc.printf("loop()\r\n");
        data[0] = 0x00;   
        data[1] = 0x00;
        data[2] = 0x00;
        data[3] = 0x00;
    
        
        //  TRY 1      
        i2c.start();
        i2c.write(address, data_write, 3);
        wait_ms(50);
        i2c.stop();
        
        i2c.start();
        i2c.read(address, data, 4);
        i2c.stop();
        
        pc.printf("Ver.1 Data[]\t 0x%X   0x%X   0x%X   0x%X \r\n\n", data[0],data[1],data[2],data[3]);
        
        
        
        
        // TRY 2
        i2c.start();
        i2c.write(0xA0);
        i2c.write(0x00);
        i2c.write(0x00);
        i2c.stop();
        wait_ms(50);
        
        i2c.start();
        i2c.read(address, data, 4);
        i2c.stop();
        pc.printf("Ver.2 Data[]\t 0x%X   0x%X   0x%X   0x%X \r\n\n", data[0],data[1],data[2],data[3]);
        


        // TRY 3
        i2c.write(address, data_write, 3);
        i2c.write(0xA0);
        i2c.write(0x00);
        i2c.write(0x00);
        wait_ms(50);
        
        
        i2c.read(address, data, 4);
        data[0] = i2c.read(0x01);
        data[1] = i2c.read(0x01);
        data[2] = i2c.read(0x00);
        data[3] = i2c.read(0x00);
        pc.printf("Ver.3 Data[]\t 0x%X   0x%X   0x%X   0x%X \r\n\n", data[0],data[1],data[2],data[3]);

        
        
        wait_ms(2000);
    }
}