File content as of revision 0:44863862864b:

#include "mbed.h"
#include "I2C.h"
#include "Serial.h"
#include "x_nucleo_iks01a1.h"
#define OUT_X_XL        (0x28)
#define CTRL_REG6_XL    (0x20)
#define XL_ADDR         (0b1101010)

//port D15 SCL clock
//port D14 SDA data

Serial pc_comm(SERIAL_TX, SERIAL_RX);
I2C xel_bus(I2C_SDA, I2C_SCL);
char xel_outx[2], xel_outy[2], xel_outz[2];
 
void setupRoutine();

void writeRoutine();

int readRoutine();

int main()
{
    setupRoutine();
    while(1)
    {
        pc_comm.printf("I'm working!!!\n");
        if( !readRoutine() )
            pc_comm.printf("Data read failed\n");
        else
            pc_comm.printf("%d %d\n",xel_outx[0],xel_outx[1]);
        wait(1.0);
        //xel_bus.read(0x2A,xel_outx,2);
        //xel_bus.read(0x28,xel_outx,2);
    }   
}

void setupRoutine()
{
    //pc_comm = new Serial(D1,D0,9600);
    //xel_bus = new I2C(D15, D14);
    xel_bus.frequency(10);
    xel_Routine();
    //CTRL_REG6_XL = 0x20; //write to register to enable accelerometer //fondo scala ±2g, ODR= 10Hz ----> BW=408Hz, Filtro AA= 408Hz  
    //CTRL_REG1_G = 0x10; //write to register to enable the accelerometer and gyroscope 
}

void xel_Routine()
{
    char config[2];
    config[0] = CTRL_REG6_XL;
    config[1] = 0x00;
    xel_bus.write(XL_ADDR, config, 1); // write to register to enable accelerometer
    config[1] = 0x20;
    xel_bus.write(XL_ADDR, config, 2); // fondo scala ±2g, ODR= 10Hz ----> BW=408Hz, Filtro AA= 408Hz
}

int readRoutine()
{
    int result;
    //xel_bus.start();
    xel_bus.write(XL_ADDR, OUT_X_XL, 1, 1);
    result = xel_bus.read(XL_ADDR, xel_outx, 2, 0);
    xel_bus.stop();
    
}