2008-12-10 03:33:25     How to map a Flag pin ( PF ) interrupt to PF_Interrupt B

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2008-12-10 03:33:25     How to map a Flag pin ( PF ) interrupt to PF_Interrupt B

Sada M (INDIA)

Message: 66587   

 

Hi,

 

How to map a Flag pin ( PF ) interrupt to  PF_Interrupt B ?

 

Is there any option in Make menuconfig ?

 

Regards,

 

Sada.

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2008-12-10 03:50:48     Re: How to map a Flag pin ( PF ) interrupt to PF_Interrupt B

Mike Frysinger (UNITED STATES)

Message: 66588   

 

there is no way currently.  the Blackfin code all uses PF Interrupt A.

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2008-12-10 04:26:59     Re: How to map a Flag pin ( PF ) interrupt to PF_Interrupt B

Sada M (INDIA)

Message: 66599   

 

Hi Frysinger,

 

Thanks for the inputs.

 

We have issue in our system due to this because, in current system we have Ethernet,WLAN & IR interrupts mapped thru PF pins and IR is actually very critical. Due to above limitaion the IR interrupt service latency is more than expected and we have issues with key detection.

 

Is there any other way to do it  ?

 

 

 

Also Is there any possibilities to enable pre-emptive in ISR ? ( Normally which we enable by pushing RETI into Stack Pointer ).

 

Regards,

 

Sada.

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2008-12-10 04:30:20     Re: How to map a Flag pin ( PF ) interrupt to PF_Interrupt B

Michael Hennerich (GERMANY)

Message: 66600   

 

Connect the IR Receiver to a timer - and not to GPIOs

 

See some examples here - this works pretty reliable ...

 

http://docs.blackfin.uclinux.org/doku.php?id=hw:cards:ir-trx&s[]=lirc

 

http://docs.blackfin.uclinux.org/doku.php?id=uclinux-dist:lirc

 

-Michael

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2008-12-10 05:51:46     Re: How to map a Flag pin ( PF ) interrupt to PF_Interrupt B

Sada M (INDIA)

Message: 66601   

 

Currently in the sytem all the TIMERs are used for LCD driver.

 

Is there any possibilities to enable pre-emptive in ISR ? ( Normally which we enable by pushing RETI into Stack Pointer ).

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2008-12-10 09:14:48     Re: How to map a Flag pin ( PF ) interrupt to PF_Interrupt B

Michael Hennerich (GERMANY)

Message: 66606   

 

Nesting of interrupts is by default enabled on Blackfin Linux.

 

-Michael

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