CCS/CC1350STK: accelerometer, gyroscope (x,y,z axis) values doesn't change

/*
 * Copyright (c) 2017, Texas Instruments Incorporated
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/***** Includes *****/
/* Standard C Libraries */
#include <stdlib.h>

/* TI Drivers */
#include <ti/drivers/rf/RF.h>
#include <ti/drivers/PIN.h>
#include <ti/drivers/pin/PINCC26XX.h>


#include <ti/mw/sensors/SensorI2C.h>
#include <ti/mw/sensors/SensorMpu9250.h>


/* Driverlib Header files */
#include DeviceFamily_constructPath(driverlib/rf_prop_mailbox.h)

/* Board Header files */
#include "Board.h"
#include "smartrf_settings/smartrf_settings.h"

/*
 * Application LED pin configuration table:
 *   - All LEDs board LEDs are off.
 */
PIN_Config pinTable[] =
{
    Board_PIN_LED1 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,
    PIN_TERMINATE
};

static  float acc_x;
static  float acc_y;
static  float acc_z;
static  float gyro_x;
static  float gyro_y;
static  float gyro_z;


/***** Function definitions *****/

void *mainThread(void *arg0)
{    
    if (SensorI2C_open())
    {
        SensorMpu9250_init();
        SensorMpu9250_powerOn();
        SensorMpu9250_enable(0x003F);
    }
    
    while(1)
    {
        bool success;
        uint16_t accData[3];
        uint16_t gyroData[3];

        // Read the data
        success = SensorMpu9250_accRead(accData);
        if (success)
        {
            acc_x = SensorMpu9250_accConvert(accData[0]);
            acc_y = SensorMpu9250_accConvert(accData[1]);
            acc_z = SensorMpu9250_accConvert(accData[2]);
        }
        
        success = SensorMpu9250_gyroRead(gyroData);
        if (success)
        {
            gyro_x = SensorMpu9250_gyroConvert(gyroData[0]);
            gyro_y = SensorMpu9250_gyroConvert(gyroData[1]);
            gyro_z = SensorMpu9250_gyroConvert(gyroData[2]);
        }
    }
}