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interrupt priority

 
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deonvds



Joined: 08 Sep 2003
Posts: 6

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interrupt priority
PostPosted: Thu Sep 23, 2004 1:35 am     Reply with quote

I am using interrupts int_rda and int_ccp2. I am using int_ccp2 to measure the frequency of a signal. The interupt int_rda however causes my software to miss pulses resulting in an inaccurate reading. How can I ensure that no pulses are lost on int_ccp2 and all data sent to int_rda is received. Is there a way to prioritize the int_ccp2 interrupt . I dont want to loose data using int_rda so is the a way of buffering incoming data while my program waits for completion of int_ccp2.
Mark



Joined: 07 Sep 2003
Posts: 2838
Location: Atlanta, GA

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PostPosted: Thu Sep 23, 2004 5:58 am     Reply with quote

You can set the priority of the interrupts (which one the compiler looks at first). Keep you ints short. Set flags and handle tasks in the main loop. Run the PIC as fast as she'll go. Post you int handlers and maybe someone can comment on improving their speed.
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