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???
08/06/07 02:29
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 		 #142794 - Why?
Responding to: ???'s previous message
Why would you try such a complicated expression in C the you would never thy in ASM.

tmp = 65536 - (10 * AxisAngle + 460) * 221184 / 120000

First the C rule of precedence say division is done first "221184 / 120000" is 1 not 1.84
"221184.0 / 120000.0" or "221184f / 120000f" might help.

back to the original question. why not figure our the correct formula to work with the proper integer constants and not bring longs or floats in to this. Also verify you ranges does the faster timer overflow within you operating range.

List of 31 messages in thread
TopicAuthorDate
Problem with using Timer 1 of AT89S52 in C            01/01/70 00:00      
   methodology and the raw reason            01/01/70 00:00      
      Range of Variables            01/01/70 00:00      
         What type is AxisAngle?            01/01/70 00:00      
            AxisAngle is char            01/01/70 00:00      
            Integer < 65536?            01/01/70 00:00      
               Working within the range of long integers            01/01/70 00:00      
                  so I should....?            01/01/70 00:00      
                     A float constant            01/01/70 00:00      
                        what's the different            01/01/70 00:00      
                           const float...            01/01/70 00:00      
                              which means the compiler            01/01/70 00:00      
                     floats            01/01/70 00:00      
         drop float            01/01/70 00:00      
            Since I have just started to learn C...            01/01/70 00:00      
               A real programming language            01/01/70 00:00      
            Fractional Equivalence            01/01/70 00:00      
         Why?            01/01/70 00:00      
            there is a reason for this...            01/01/70 00:00      
               don't think as a PC programmer....            01/01/70 00:00      
                  Application vs. Hardware Platform            01/01/70 00:00      
                     the prudent programmer...            01/01/70 00:00      
                  PDP?            01/01/70 00:00      
                     it's not similar to the REAL assembly, of course,            01/01/70 00:00      
            Division is not always first            01/01/70 00:00      
               You are right.            01/01/70 00:00      
                  Explicitness            01/01/70 00:00      
                     is this when the C-code...            01/01/70 00:00      
                     agree with the agreement            01/01/70 00:00      
   Try this, can be better            01/01/70 00:00      
      Superfluous casts            01/01/70 00:00      

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