File content as of revision 6:e83f444edda0:

#include "mbed.h"

I2C i2cMaster(D14,D15);// SDA, SCL
DigitalIn mybutton(USER_BUTTON);
Serial pc(USBTX, USBRX);
char writeData[6];
    
int main() {
    
    pc.baud(57600);
    pc.printf("Starting I2CMaster\r\n");
    i2cMaster.frequency(400000);
    int  address  ;
    writeData[0]=0x01;
    writeData[1]=0x02;
    writeData[2]=0x03;
    writeData[3]=0x04;
    writeData[4]=0x05;
    writeData[5]=0x06;

    while(1) {
        int count = 0;
        for (address=0; address<256; address+=2) {
            if (!i2cMaster.write( address , NULL, 0)) { // 0 returned is ok                
                pc.printf("I2C address 0x%02X\r\n", address);
                count++;
                break;
            }
        pc.printf("I2C address 0x%02X\r\n", address);
    if(mybutton == 0) {
    
    i2cMaster.write(address,writeData,6);
    
    pc.printf("i2cMaster Sent writeData[0] To 0x%02X \r\n", address);
    wait(2);
    }
   
    }
    }
    }