Hi Laurence,

I don't have a solution to your problem, unfortunately, but maybe you can
help me. I also got the Proteus Virtual Simulator + the '874 model. However,
I can't get it to work, not even a simple setting of output pins. I'm using
a simple piece of software that runs on the hardware OK, but no success with
the VSM.
Could you mail me a source (jan.didden@skintech.be) that you know runs on
the VSM so I can see what I maybe do wrong?

Thanks beforehand,

Jan Didden

By the way PIClisters, it's worthwhile to check out www.labcenter.co.uk,
their VSM simulates pic systems interactively, i.e. you mouse-click a switch
on the schematic and the pic reacts etc. Including interactive debugging
etc. Very neat! There is a lite version for < 100 US$


----- Original Message -----
From: "Laurence Evans" <L.O.Evans@STUDENT.SALFORD.AC.UK>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Wednesday, November 28, 2001 12:48 PM
Subject: [PIC]: UART Rx Problems


> Hello All,
>
> I am having trouble with the UART of an 16F877.
>
> I am using a piece of software which simulates the PIC extremely
> well and does simulate the UART (Proteous). Every time I initialise
> the UART the Rx State changes to "Start Bit" straight away
> despite the input being configured as an input and its being driven
> high.
>
> The UART goes to start bit as soon as the instruction:
>
> bsf  rcsta, cren
>
> is executed.  Because the UART thinks it has recived a start bit, it
> gets a framing error which is impossible to clear for some reason.
> Mabe its because the UART status goes immediatly to start bit
> again after recieveing anything ????
>
> Thanks for any help in advance
>
> --
> http://www.piclist.com hint: PICList Posts must start with ONE topic:
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>
>

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