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???
03/04/10 16:22
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 		 #173855 - Many Reasons for not clearing (all of) RAM
Responding to: ???'s previous message
Erik Malund said:
if you really (I do not see why) want a 'limited' clearing of RAM

Because, for example, you might want (some of) your RAM to be non-volatile.

There are plenty of applications where it is useful to have RAM not cleared by reset; eg

  • Power-saving: the processor is put into a very-low-power mode, from which the only escape is Reset, but the RAM is maintained at its "data retention" supply level;

  • Error logging; eg, diagnostics accessible after a Watchdog restart.

    etc, etc, ...


    • List of 35 messages in thread
    TopicAuthorDate
    Problem with strings in C            01/01/70 00:00      
       You missed a fundamental point on how 'C' does strings            01/01/70 00:00      
          I think you don't need to be mysterious here, Andy            01/01/70 00:00      
             Strings in 'C' *must* be NUL-terminated            01/01/70 00:00      
       A little whitespace goes a long way            01/01/70 00:00      
       conversion on top of conversion            01/01/70 00:00      
          Null termination            01/01/70 00:00      
             Think about it...            01/01/70 00:00      
             so is your problem solved or not?            01/01/70 00:00      
                "lucky" or "unlucky"?            01/01/70 00:00      
                   rather            01/01/70 00:00      
                      Yes - that's what I meant!            01/01/70 00:00      
                That, in fact, IS it            01/01/70 00:00      
                   how true            01/01/70 00:00      
                   Debugger != Simulator            01/01/70 00:00      
                   if that is true, find another job!            01/01/70 00:00      
                      Does Keil initialise non-static data?            01/01/70 00:00      
                         the very first thing ...            01/01/70 00:00      
                            this is not the case..            01/01/70 00:00      
                               Mr C hater:            01/01/70 00:00      
                                  this IS part of the C-hatred            01/01/70 00:00      
                                     but you do            01/01/70 00:00      
                                        and what are the unzeroed values, then?            01/01/70 00:00      
                                           I have no idea            01/01/70 00:00      
                                        Many Reasons for not clearing (all of) RAM            01/01/70 00:00      
                                           I actually gave an example.            01/01/70 00:00      
                                           Another Example...            01/01/70 00:00      
                                              what I wold do            01/01/70 00:00      
                                                 I Elect to Totally Disagree            01/01/70 00:00      
                                                    a reply            01/01/70 00:00      
                                                       I'll take the time to reply when...            01/01/70 00:00      
                                                       It's too easy            01/01/70 00:00      
                                                          Auro variables are always undefined            01/01/70 00:00      
                                                    Seconded!            01/01/70 00:00      
                                                       makes assumptions?            01/01/70 00:00      

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