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Discussion Groups | Freescale DSPs | DSP56807 with SDK and ISR written in assembly

Technical discussions about Freescale (Motorola) DSPs (including the DSP56000, DSP56300, DSP56600, 56800 DSPs).

  

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DSP56807 with SDK and ISR written in assembly - Christian Brauchli - Jun 26 19:24:00 2002

Hello

I have a small question according to ISR.

I'm using the SDK to set up most of my Interrupts. Now I had to program 1
Interupt in assembly with the Priority 5. (This ISR uses about 50% of my DSP
ressource.) The Interrupt handling and the timing according to the priority
works fine.The ASM ISR stops the lower ISR from running if required.
It is a motion application and for safety reason I had to set up Interrupts with
higher priority (6).

Now the problem is that this ISR (6) does not stops the Priority 5 ASM routine
from running.

I checked out the SDK function dispatcher.asm, but coudn't figure out how to set
up the SR Register.

Thanks for helping and feedbacks

Chris Brauchli
Brauchli Netsolution Berg
Switzerland


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