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Andy Neil
06/22/09 01:46
Read: 286 times
Basingstoke
Uk


 		 #166329 - Good idea!
Responding to: Murray R. Van Luyn's previous message
Yes, this general approach is commonly used to implement multiple "software" timers, and/or timers beyond the capability of the hardware.

Thanks for the example!

The detail can be tweaked to suit individual requirements; eg, you might prefer a bit flag rather than a function call to check for timer expiry...
See also Per's notes: http://www.8052.com/forum/read/166324


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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