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???
03/21/05 13:46
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 		 #90106 - atomic explosions
Responding to: ???'s previous message
And it is a surprisingly common problem that gets little mention.

Little mention, and, unfortunately even less attention.

I can hardly count the software "explosions" I have seen due to insufficient attention to "atomic".

I am sure this would be one answer on "Family Feud" to "what are the causes of intermittent software failures?.

The most popular "atomic error" is to write an int/short in the ISR and read it in the main without disabling ints around that read. This, in C, does, of course, look atomic.

Erik

"Family Feud" is a gameshow where the host say "Give me the most popular answers to ..."

List of 38 messages in thread
TopicAuthorDate
DS5250 Lockup in ISR's With Priority            01/01/70 00:00      
   Update:            01/01/70 00:00      
      Software Bug            01/01/70 00:00      
      using what            01/01/70 00:00      
         register banks            01/01/70 00:00      
            Shared Data Problem            01/01/70 00:00      
            What stops?            01/01/70 00:00      
               timer isr stops            01/01/70 00:00      
                  Hunting down the ghost            01/01/70 00:00      
   Using different banks            01/01/70 00:00      
      Can't be            01/01/70 00:00      
         stack            01/01/70 00:00      
            more on ISRs            01/01/70 00:00      
         DS5240 has a 1k stack.            01/01/70 00:00      
            but are you using it            01/01/70 00:00      
               Stack            01/01/70 00:00      
   ISRs with Own Register Banks.            01/01/70 00:00      
      Good Questions on ISR's            01/01/70 00:00      
         Shared Data            01/01/70 00:00      
         Not a given            01/01/70 00:00      
            Variable in isr            01/01/70 00:00      
               Sometimes true            01/01/70 00:00      
                  Atomic Operations            01/01/70 00:00      
                     re explosive bytes            01/01/70 00:00      
                        Common Solutions            01/01/70 00:00      
                           Stop's the timer            01/01/70 00:00      
                              Code            01/01/70 00:00      
                        Explosions everywhere            01/01/70 00:00      
                           atomic explosions            01/01/70 00:00      
                              Unreal Time Explosions            01/01/70 00:00      
               Look at the ASM            01/01/70 00:00      
         I have had a very similar problem            01/01/70 00:00      
      ASM instructions & USING            01/01/70 00:00      
         Please do tell us....            01/01/70 00:00      
            Do I really have to?            01/01/70 00:00      
            Brian, Michael            01/01/70 00:00      
               ASM instructions & USING            01/01/70 00:00      
         probably not the case here            01/01/70 00:00      

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