Hello

How can I return from an interruption working in C Code? In other words: what's the equivalent
to RTI or RETI (assembler) in C Code? I'm searching in the documentation and in forum but I
don't find anything.

Thanks you for all your help

Eduardo Méndez

------------------------------------

Hello,

You do not need to place an RTI instruction while in C code. When you decla=
re a function with the "interrupt" pragma, the compiler will know that this=
 one is the ISR (Interrupt Servicing Routine) and will create all the addit=
ional code to correclty handling the interrupt when it occurs, inlcuding th=
e RTI at the end.

Your question was like "How can I return from a subroutine working in C Cod=
e? In other
words: what's the equivalent to RTS (assembler) in C Code?" And I guess you=
 already understand that the C run time / compiler takes care of that, gene=
rating for you the RTS where needed; you actually do not have to place manu=
ally in your C code. Is equivalent in the interrupt case.

Regards.

=20
Jaime Andr=E9s Aranguren Cardona
j...@ieee.org
j...@computer.org
----- Original Message ----
From: "f...@yahoo.es" <f...@yahoo.es>
To: a...@yahoogroups.com
Sent: Thursday, May 15, 2008 4:02:43 AM
Subject: [adsp] Return from interruption in C Code

Hello

How can I return from an interruption working in C Code? In other words: wh=
at's the equivalent to RTI or RETI (assembler) in C Code? I'm searching in =
the documentation and in forum but I don't find anything.

Thanks you for all your help

Eduardo M=E9ndez

------------------------------------

Hello

Thanks you all of you for your help. It was very useful.

As Jaime has said, the solution to indicate to the DSP that the ISR has finished (in C Code),
is simply declare the function with "#pragma interrupt". Like this:

#pragma interrupt
void address(int dummy)

Then the compiler will place an RETI instruction to return from this routine while generating
the code. Not RETS.

Thanks you

Eduardo MÉNDEZ

Hello
>
>How can I return from an interruption working in C Code? In other words: what's the
equivalent to RTI or RETI (assembler) in C Code? I'm searching in the documentation and in
forum but I don't find anything.
>
>Thanks you for all your help
>
>Eduardo Méndez
>
>------------------------------------

------------------------------------

Hello,
Eduardo, I am glad that you got it.
Remember that you also need to use of of the interrupt() functions, in one =
of its many flavors (normal, fast, super-fast, etc)=A0to hook up the ISR to=
 the interrupt source.
Regards,
=A0
Jaime Andr=E9s Aranguren Cardona
j...@ieee.org
j...@computer.org
----- Original Message ----
From: "f...@yahoo.es" <f...@yahoo.es>
To: a...@yahoogroups.com
Sent: Friday, May 16, 2008 4:13:27 AM
Subject: [adsp] Re: Return from interruption in C Code
Hello

Thanks you all of you for your help. It was very useful.

As Jaime has said, the solution to indicate to the DSP that the ISR has fin=
ished (in C Code), is simply declare the function with "#pragma interrupt".=
 Like this:

#pragma interrupt
void address(int dummy)

Then the compiler will place an RETI instruction to return from this routin=
e while generating the code. Not RETS.

Thanks you

Eduardo M=C9NDEZ

Hello
>
>How can I return from an interruption working in C Code? In other words: w=
hat's the equivalent to RTI or RETI (assembler) in C Code? I'm searching in=
 the documentation and in forum but I don't find anything.
>
>Thanks you for all your help
>
>Eduardo M=E9ndez
>
>------------------------------------

------------------------------------

NEW!=A0 You can now post a message or access and search the archives of thi=
s group on DSPRelated.com:
http://www.dsprelated.com/groups/adsp/1.php

_____________________________________


=20=20=20=20=20=20

------------------------------------