Well, the scope shows the bits are being clocked out, I'll bet my
bit-delay routines are not quite right!

I'll compare to a known-good 4800 baud soutrce as you advise


> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Alan B. Pearce
> Sent: 19 December 2003 09:36
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [PIC:] Microchip C18 Software UART (again!)
>
>
> >Could anyone put me out of my misery, and spot my error?
> >
> >Thanks, Peter Moreton
> >
> >(BTW, processor is PIC18F452 clocked at 4Mhz with PLL
> >enabled giving FOSC=16Mhz, baudrate is 4800)
>
> Are you sure it transmits at 4800? get a scope out and look
> at the waveform,
> and find the actual timing. Send some characters from the
> terminal at 4800
> and see if the bit width is the same. It sounds like the code
> is working
> correctly, just the baud rate is screwed up.
>
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