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???
02/16/05 18:10
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 		 #87688 - Magic Tweeking
Responding to: ???'s previous message
last time I did some quick code optimisation I managed to get the time to sweep the screen from 15 seconds to 10 seconds.
I just did a little curser to be drawn on top of the screen as you suggested instead of the full vertical curser and did one complete white curser to erase the old sample, hold and behald, the scan time for the whole screen went down to 5 seconds.
I turned on my compiler and assembler optimisation to full and I got the time to scan the whole display and display 2 traces into 3 seconds.
I think 3 seconds is more than enough for my purpose, I'm positive with more tweeking I can take time to scan further down.
I think operands like % take a long time, if I look into that it will save me some more precious time.
Thanks
Mahmood


List of 42 messages in thread
TopicAuthorDate
GLCD Project (low frequency scope)            01/01/70 00:00      
   GLCD Scrolling            01/01/70 00:00      
      Lesson learned            01/01/70 00:00      
         did you check            01/01/70 00:00      
   hi Speed GLCD displays?            01/01/70 00:00      
      Probably            01/01/70 00:00      
      Hardware scroll            01/01/70 00:00      
         PaceSetter            01/01/70 00:00      
      Best Display >> None is perfect            01/01/70 00:00      
         Sweep mode            01/01/70 00:00      
            Scope Squares            01/01/70 00:00      
            8 Bits Update            01/01/70 00:00      
               like rotate it 90°?            01/01/70 00:00      
                  90° Rotation Indeed            01/01/70 00:00      
   One step further            01/01/70 00:00      
      Animation            01/01/70 00:00      
         scan too slow!!            01/01/70 00:00      
            15 seconds? !!!            01/01/70 00:00      
               or....            01/01/70 00:00      
               slightly more            01/01/70 00:00      
               Optimization            01/01/70 00:00      
                  calculation            01/01/70 00:00      
                     Will have a look            01/01/70 00:00      
                        assembler speedup            01/01/70 00:00      
                  if it is really slow            01/01/70 00:00      
                     too smart Man            01/01/70 00:00      
                        another way            01/01/70 00:00      
                  When do you wait?            01/01/70 00:00      
                     first choice            01/01/70 00:00      
               should I use Serial RAM for buffer?            01/01/70 00:00      
                  serial RAM and time            01/01/70 00:00      
                     lcd_not_busy();            01/01/70 00:00      
                        a much faster approach            01/01/70 00:00      
                           I don't have enough XRAM            01/01/70 00:00      
                              magic            01/01/70 00:00      
                              more tweaking            01/01/70 00:00      
                                 Good thinking Jan            01/01/70 00:00      
                                    tweaking II.            01/01/70 00:00      
                                       Magic Tweeking            01/01/70 00:00      
                  Serial RAM is useless            01/01/70 00:00      
   maybe this technique will work here            01/01/70 00:00      
      Multi-microcontrollers            01/01/70 00:00      

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