>-----Original Message-----
>From: Jan-Erik Soderholm XA (TN/PAC)
>[mailto:jan-erik.xa.soderholm@ERICSSON.COM]
>Sent: 06 January 2004 13:27
>To: PICLIST@MITVMA.MIT.EDU
>Subject: Re: [PIC:] getting serial overrun on 16F877 in HT PICC?

>Let the TMR1IF generate an interrupt (as now). Then in the ISR
>just set your own "PID-flag" saying that your PID routine has
>to be run now (or rather "soon"). Then leave the ISR and let
>your main-loop detect your PID-flag and run the PID code.
>During that time, you are able to service other interrupts
>like the UART receive interrupt.

Note that there is no need to even have an interrupt if it's only purpose is
to set a flag. Simple using the TMR1IF flag in the main loop will work fine
without the extra interrupt overhead.

Regards

Mike




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