I am trying to send data out on the hardware USART of a PIC18F252 from 
readign the datasheet and it is not sending any data.

I have the output pin on  scope and when I run the init code it goes high, 
but when I try to send chartacters, nothing happens.

Here is the bit of code I am using.  (BoostC compiler)

	trisc.6 = 0;     // Set TX pin for output.
	trisc.7 = 1;     // Set RX pin for input.
	spbrg   = 51;    // 9600 baud at 20MHz clock.
	txsta.BRGH = 1;	 // 1 = High baud rate.
	txsta.SYNC = 0;	 // 0 = async.
	rcsta.SPEN = 1;	 // 1 = Enable the serial port hardware.
	txsta.TX9  = 0;	 // 0 = No 9th bit.
	txsta.TXEN = 1;	 // 1 = Enable transmission.

	while (1)
	{
		while (!txsta.TRMT)
			txreg = 'H';
		while (!txsta.TRMT)
			txreg = 'i';

		porta.1 = !porta.1;
	}

The led blinks (I can see it on the scope) but the TX pin (pin RC6/TX/CK) 
just stays high and does nothing at all. 

I assume I don't need to tie the TX pin to ground or voltage?  I am going 
to another PIC so I don't need to do any RS232 level inversion either.

Any clues?  Thanks again!

--
Ian Smith
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