Hi Laurence,

Go to http://redrival.com/mcgahee/ and download PICUART.ZIP, which is Fr.
Tom McGahee's PIC UART tutorial. I  think this is a known "gotcha" and
there is a way to clear the framing error. It is addressed in his (well
commented) example code.

Sean

At 12:48 PM 11/28/01 +0100, you wrote:
>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
>
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