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Andy Neil
06/23/09 16:04
Read: 235 times
Basingstoke
Uk


 		 #166402 - Prototyping ISRs
Responding to: Andy Peters's previous message
Mahesh Joshi said:
2. only prototype ISR in any of .h file which is #included in the file containing main()

Andy Peters said:
Option 2 is the standard way of allowing functions in one file to call functions in another.

True - but the 'C' source code never calls an ISR, does it?

Therefore a prototype for an ISR seems somewhat meaningless

I don't see this as a limitation of SDCC -- it's just how C works.

I think the requirement for the ISR to be "visible" in the fille containing main() is purely an SDCC requirement?
It certainly has nothing to do with 'C' in general.
('C' in general knows nothing about ISRs).

List of 29 messages in thread
TopicAuthorDate
Pseudo timers make programming delays easy.        Murray R. Van Luyn      06/21/09 23:10      
   volatile + racing condition      Per Westermark      06/21/09 23:55      
      slow processors      Per Westermark      06/22/09 01:27      
         You beat me to it...      Jez Smith      06/22/09 01:50      
      Timers_0.1 available.      Murray R. Van Luyn      06/22/09 01:52      
         SDCC      Jan Waclawek      06/22/09 02:19      
            ISR defining with SDCC      Mahesh Joshi      06/22/09 02:42      
               oh, I just read it in the manual      Jan Waclawek      06/22/09 02:50      
                  only conditionally, as #ifdef SDCC      Andy Neil      06/22/09 03:20      
               SDCC and ISRs      Andy Peters      06/23/09 14:17      
                  Prototyping ISRs      Andy Neil      06/23/09 16:04      
                     you can see it as if....      Jan Waclawek      06/23/09 16:39      
                        SDCC Quirk?      Andy Neil      06/23/09 16:56      
                           internals of SDCC        Maarten Brock      07/08/09 14:31      
                     duh      Andy Peters      06/24/09 14:49      
         Too quick        Per Westermark      06/22/09 02:38      
            I see something else...        Jan Waclawek      06/22/09 02:53      
               That helped.      Murray R. Van Luyn      06/22/09 22:33      
            Oops! Timers_0.2 available.      Murray R. Van Luyn      06/22/09 22:23      
               you persist      Erik Malund      06/23/09 07:25      
   Good idea!      Andy Neil      06/22/09 01:46      
   atomicity      Erik Malund      06/22/09 08:13      
      No      Jez Smith      06/23/09 08:40      
         I gladly, click on a link ....      Erik Malund      06/23/09 08:53      
            Direct link      Jon Ledbetter      06/23/09 10:54      
               that was clearly possible, I wonder why ...      Erik Malund      06/23/09 14:11      
               one more thing, now we are digging deep      Erik Malund      06/25/09 06:37      

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