int start_I2C(){
    if (gpioInitialise() < 0) {
        std::cout << "Initialization of GPIO faieldn";
        return -1;
    }
    xfer.control = ( I2C_ADDR << 16 ) | 0x305;
    if ( bscXfer( &xfer ) < 0){
        std::cout << "Errors on I2C.cpp on function bscXfer()n";
        return -1;
    }
    memset( xfer.rxBuf, '', sizeof(char)*BSC_FIFO_SIZE );
    xfer.rxCnt = 0;
    xfer.txCnt = 0;
    std::cout << "Raspberry Pi I2C OK!n";
    return 0;
}

2017-12-14 00:24:55 initCheckPermitted:
+---------------------------------------------------------+
|Sorry, you don't have permission to run this program.    |
|Try running as root, e.g. precede the command with sudo. |
+---------------------------------------------------------+


Initialization of GPIO faield