Jeff,

The "C" compiler will let you create two interrupt handlers for PIC18, one 
for low and one for high priority. You can certainly change the priority of 
a device at runtime (although I would probably make sure it is "off" and not 
currently generating an  interrupt first). If you do, you will have to 
include checks for that device in both interrupt handlers. Be very careful 
that you do not process the interrupt in the wrong handler (ie: the one that 
is not for the current priority of the device).

-- Bob Ammerman
RAm Systems


----- Original Message ----- 
From: "Jeff Zentner" <jeff.zentner@highsierraelectronics.com>
To: "Microcontroller discussion list - Public." <piclist@mit.edu>
Sent: Thursday, March 27, 2008 12:17 PM
Subject: [PIC] change interrupt priority at run time


> Hi All
> Is it possible to change interrupt priority at run time? I am using an
> 18F252 and CCS complier.
>
> Jeff Zentner
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