Dave Turner wrote:
> I am using async comms
> with it, and it seems to be doing something right, as it keeps sending
> something, at the correct interval.  Unfortuneately, in hyperterminal,
> it only comes up with a lot of hearts and spaces.

Sounds like a baud rate mismatch.

> BTW, I am trying to use a baud rate of 9600, and I think the clock is
> a 20MHz one, but I'm not sure.

Then get sure.  You need to know the clock frequency to set up the UART in
order to get the desired baud rate.

> The osc config bit is EXTRC-OSC2 as clock out.

Huh?  I haven't looked at this data sheet, but EXTRC usually means "external
R/C".  These don't go to 20MHz, at least not on an PIC I have looked at.  I
also find it unlikely that Microchip would have used this mode on one of
their development board.  They cost enough that $.50 for a crystal would be
irrelevant.

Once you know your oscillator frequency, take a look at my UART_xxx macros
in STD.INS.ASPIC.  These can be used to automatically compute the baud rate
setup and intialize the UART.


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