File content as of revision 0:3c7374cb5c3c:

#include "mbed.h"

#define ADDR 0x2A


DigitalOut myled(LED1);
DigitalOut myled2(LED2);
I2C         i2c( p28, p27 );
Serial pc(USBTX, USBRX); // tx, rx 
//Serial device(p9, p10);  // tx, rx

unsigned int red = 0;
unsigned int green = 0;
unsigned int blue = 0;
unsigned int ir = 0;


void callback() {
    // Note: you need to actually read from the serial to clear the RX interrupt
    printf("%c\n", pc.getc());
    myled2 = !myled2;
}

void GetRGB(){
  int databuf =0;
   char cmd[2];
  char dat[8];
  int a =0;
    /* //manual exposure mode
  setManualtGain(100);
  Wire.beginTransmission(device_address);
  Wire.write(control_reg);
  Wire.write(0x84); // ADC reset LowGain wakeup
  Wire.endTransmission(false);
  Wire.beginTransmission(device_address);
  Wire.write(control_reg);
  Wire.write(0x04); //start
  Wire.endTransmission(true);
  */

  //preset gain mode exposure time (each color ch)
  //  00 = 87.5us
  //  01= 1.4ms
  //  10= 22.4ms
  //  11= 179.2ms
  cmd[0] = 0x00;
  cmd[1] = 0x8A;
 // i2c.start();
  a = i2c.write(ADDR , cmd , 2);
  cmd[0] = 0x00;
  cmd[1] = 0x0A;
   i2c.write(ADDR , cmd , 2);
//  printf("b=%d",a);

  wait(0.1);

  cmd[0] = 0x03;
 //i2c.start();
  a = i2c.write(ADDR , cmd , 1);
  i2c.read(ADDR , dat , 8);//引数trueでNACK出力


  red = dat[0]<<8 | dat[1];
  green = dat[2]<<8 | dat[3];
  blue = dat[4]<<8 | dat[5];
  ir = dat[6]<<8 | dat[7];


}

int main()
{
  i2c.frequency(100000);

    //pc.attach(&callback);
    pc.baud(115200);
 //   device.baud(115200);
    while(1) {
        myled = 1;
        wait(0.25);
        myled = 0;
        wait(0.25);

        GetRGB();

        pc.printf("R=%5d  G=%5d  B=%5d  I=%5d\n",red,green,blue,ir);
//        device.printf("12345\n");
        }
}