I am having problems with the TXIF flag not being set after loading transmit
data into the TXREG. A snippet of code concerning the serial comms is below.
Would someone mind pointing out what I have missed ? The code locks up on
the "while" line.
The watchdog timer is disabled, code is compiled using Hi-Tech C in MPLAB,
then downloaded via Microchip DEBUG ICD to ISP connection on target. I have
tested other code on the platform such as flashing LED's etc attached to
various port pins without problem.


THANKS

void Send(unsigned char tx_byte)
{
   TXREG = tx_byte;
   while (!TXIF);
}

void init(void)
{
        TRISC = 0x80;   PortC = all outputs except RXD
        INTCON = 0xc0;  Enable global ints, enable PEIE
        TXSTA = 0x24;  Txen = 1,Sync = 0,BRGH = 1
        RCSTA = 0x50;  Spen = 1, CREN = 1
        SPBRG = 129;   9600 Baud, 0.16% error
}

main(void)
{
  for(;;)
  {
    Send(65);
    Delay(200);
  }
}

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