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???
06/02/09 06:07
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 		 #165727 - lacks side-effects
Responding to: ???'s previous message
Sandeep Gupta said:
Keil compilation is ok. The program is running fine and the delay is also generated. But, PC-Lint is generating the Warning:
"Warning 522: Highest operation, function 'sdelay', lacks side-effects"

It is telling you that the function does nothing - which is perfectly true!

That's why compilers so often optimise-out delay loops like this!

You probably need a decent 'C' textbook to explain standard terms like "side effects".

Note that writing delay loops in a high-level language is generally a bad idea anyhow: http://www.8052.com/forum/read/162556




List of 30 messages in thread
TopicAuthorDate
s/w delay function            01/01/70 00:00      
   Software loops can be optimized away            01/01/70 00:00      
   lacks side-effects            01/01/70 00:00      
      First time with LINT?            01/01/70 00:00      
   lacks side-effects            01/01/70 00:00      
      That does not mean it is an error.            01/01/70 00:00      
      It also blocks            01/01/70 00:00      
   How to post legible source code            01/01/70 00:00      
   DELAY_0.1.ZIP Useful?            01/01/70 00:00      
      That doesn't help, and it won't work anyhow!            01/01/70 00:00      
         I stand by it.            01/01/70 00:00      
            Yes a delay function is useful            01/01/70 00:00      
               wrong !!!!            01/01/70 00:00      
               No, that's precisely where you're wrong            01/01/70 00:00      
            How can you say that?            01/01/70 00:00      
               I think you should read Murray's comments            01/01/70 00:00      
                  I have seen ...            01/01/70 00:00      
                     Timers usable without start/stop too            01/01/70 00:00      
                        free-running counter/timer            01/01/70 00:00      
                           Unsigned integers            01/01/70 00:00      
                              re: unsigned            01/01/70 00:00      
                                 Try unsigned subtraction with borrow            01/01/70 00:00      
                                 bug in second (improved!?) code block            01/01/70 00:00      
   Delay Loops in 'C'..!!! NO            01/01/70 00:00      
      Go on. Suggest a SIMPLE alternative            01/01/70 00:00      
         My Methods            01/01/70 00:00      
            So he has a long list of constraints            01/01/70 00:00      
               oh boy what a load who wil have 10 minutes for this            01/01/70 00:00      
                  Ok. I was being naughty.            01/01/70 00:00      
                     you forget the obvious ...            01/01/70 00:00      

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