void disableRN() {
P4OUT &= ~BIT4; //hold in reset
disableUART();
P1IE &= ~BIT3; //disable RTS interrupt
P1IE &= ~BIT0; //disable Connection interrupt
}
void gps_igt()
{
disableUART();
GPIO_SetBits(GPIOC, GPIO_Pin_0);
delay();
GPIO_ResetBits(GPIOC, GPIO_Pin_0);
enableUART();
}