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Discussion Groups | TMS320C28x | Interrupt priorities F2812

Technical discussions about the TI C28x DSPs (including the C2810, C2811, C2812, F2801, F2806, F2808, F2810,, F2811, F2812, R2811 and R2812).

  

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Interrupt priorities F2812 - sta_enev - Jan 31 8:20:34 2008



Hi all,

I have the following problem, so to say:

How can I setup highest priority of GP Timer 1 Compare interrupt 
(T1CINT) to CPU Timer0 (TINT0) interrupt. I need to service T1CINT 
immediatly (stop the ISR relative to TINT0 if necessary) and then 
return back and continue TINT0 ISR. 

Thanks in advance.

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for Commercial & Consumer End Equipment: www.ti.com/dm6467

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http://www.dsprelated.com/groups/c28x/1.php

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Re: Interrupt priorities F2812 - Jan Humpl - Jan 31 11:21:51 2008

Hi,
   you can't change priorities of interrupts. However you can enable 
some other interrupts in ISR. In ISR all interrupts are disabled by 
default (DINT;). If you want tint1 to interrupt tint0, you must set IER 
in tint0 ISR to define which interrupts are allowed during tint0 ISR, 
then enable interrupts (EINT;) in tint0 ISR. All interrupts enabled in 
IER will be now possible to interrupt tint0 ISR. But there still will be 
small delay.

JkH
sta_enev napsal(a):
> Hi all,
> 
> I have the following problem, so to say:
> 
> How can I setup highest priority of GP Timer 1 Compare interrupt
> (T1CINT) to CPU Timer0 (TINT0) interrupt. I need to service T1CINT
> immediatly (stop the ISR relative to TINT0 if necessary) and then
> return back and continue TINT0 ISR.
> 
> Thanks in advance.
Check Out Industry's First Single-Chip, Multi-Format, Real-Time HD Video Transcoding Solution
for Commercial & Consumer End Equipment: www.ti.com/dm6467

You can post a message or access and search the archives of this group on DSPRelated.com:
http://www.dsprelated.com/groups/c28x/1.php

_____________________________________

 


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Réf. : Interrupt priorities F2812 - Alain SALMETOZ - Jan 31 11:22:11 2008

When entering an interrupts, you choose explicitely which interrupts will=20
be authorized (all are disabled by default).
It is flexible, but you must write all yourself.

Note that this does not work this way with DSP-BiOS.

Envoy=E9 par :    c...@yahoogroups.com
Pour :  c...@yahoogroups.com
cc :=20=20=20=20=20

Objet : [c28x] Interrupt priorities F2812

Hi all,

I have the following problem, so to say:

How can I setup highest priority of GP Timer 1 Compare interrupt=20
(T1CINT) to CPU Timer0 (TINT0) interrupt. I need to service T1CINT=20
immediatly (stop the ISR relative to TINT0 if necessary) and then=20
return back and continue TINT0 ISR.=20

Thanks in advance.

Check Out Industry's First Single-Chip, Multi-Format, Real-Time HD Video Tr=
anscoding Solution for Commercial & Consumer End Equipment: www.ti.com/dm64=
67

You can post a message or access and search the archives of this group on D=
SPRelated.com:
http://www.dsprelated.com/groups/c28x/1.php

_____________________________________

=20


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