void GSM_HardInit(void) {
    U2MODE = 0;
    U2STA = 0;
    SystemUnlock();
    RPC2R = 2;  //RemapOutput(OUTPUT_FUNC_U2TX, OUTPUT_PIN_RPC2);
    U2RXR = 12; // RemapInput(INPUT_FUNC_U2RX, INPUT_PIN_RPC3); 
    SystemLock();
    TRISASET = _TRISA_TRISA1_MASK; //TRISAbits.TRISA1 = 1;
    LATACLR  = _LATA_LATA5_MASK; //LATAbits.LATA5 = 0;
    TRISACLR = _TRISA_TRISA5_MASK; //TRISAbits.TRISA5 = 0;     
    /* set rx interrupt priority */
    IPC36CLR = _IPC36_U2RXIP_MASK;
    IPC36SET = (2 << _IPC36_U2RXIP_POSITION);
    IPC36CLR = _IPC36_U2RXIS_MASK;
    IPC36SET = (0 << _IPC36_U2RXIS_POSITION);
    /* set tx interrupt priority */
    IPC36CLR = _IPC36_U2TXIP_MASK;
    IPC36SET = (2 << _IPC36_U2EIP_POSITION);
    IPC36CLR = _IPC36_U2TXIS_MASK;
    IPC36SET = (0 << _IPC36_U2TXIS_POSITION);
    /* set error interrupt priority */
    IPC36CLR = _IPC36_U2EIP_MASK;
    IPC36SET = (2 << _IPC36_U2TXIP_POSITION);
    IPC36CLR = _IPC36_U2EIS_MASK;
    IPC36SET = (0 << _IPC36_U2EIS_POSITION);     
    U2BRG = (unsigned short) (((float) SYS_CLK_BUS_PERIPHERAL_1 /
            (4.0 * gsmConfig()->uartBrg))-(float) 0.5);
}