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???
04/11/09 09:01
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 		 #164529 - reply per
Responding to: ???'s previous message
No delay in ISR but the interrupt is 1ms. sry for giving wrong info.
I have tried the cmucam but still it cant works when using the interrupt.

List of 40 messages in thread
TopicAuthorDate
how to avoid timer interrupt interrupts serial communication            01/01/70 00:00      
   Here the timing is relevant!            01/01/70 00:00      
   how to avoid timer interrupt interrupts serial communication            01/01/70 00:00      
      reply Kai            01/01/70 00:00      
         Do ms-class delays in any interrupt.            01/01/70 00:00      
            re: Per Westermark            01/01/70 00:00      
               ISR frequency * time significantly below 100%            01/01/70 00:00      
               Not sure, whether I got you...            01/01/70 00:00      
               That is not the main problem            01/01/70 00:00      
                  It's a common mistake...            01/01/70 00:00      
                     oops            01/01/70 00:00      
                        Long ISRs are no problem, unless...            01/01/70 00:00      
          instruction execution cycle/time in C language            01/01/70 00:00      
   ISR is set to 1ms but...            01/01/70 00:00      
      That is the problem            01/01/70 00:00      
         oops            01/01/70 00:00      
            What is the baud rate?            01/01/70 00:00      
               9600 baud            01/01/70 00:00      
                  He has got to be sitting in a interupt            01/01/70 00:00      
                     reply            01/01/70 00:00      
                        Many many more details needed!!            01/01/70 00:00      
                           reply Kai            01/01/70 00:00      
                              Further questions...            01/01/70 00:00      
                                 reply Kai            01/01/70 00:00      
                                    Who tells your micro how the stepper is to be moved?            01/01/70 00:00      
                                       reply            01/01/70 00:00      
                                          So, the stepper is running all the time?            01/01/70 00:00      
                                             ya...this is the purpose of having interrupt            01/01/70 00:00      
                                                Ok, then confirm this please...            01/01/70 00:00      
                                                   reply Kai            01/01/70 00:00      
                                                      Still delays in the ISR?            01/01/70 00:00      
                                                         reply per            01/01/70 00:00      
                                                      I suspect that your ISR is longer than 1msec!            01/01/70 00:00      
                                                         reply            01/01/70 00:00      
                                                         ISR code            01/01/70 00:00      
                                                            Post full ISR            01/01/70 00:00      
                                                               reply            01/01/70 00:00      
                                                                  Still not full ISR shown - and debounce?            01/01/70 00:00      
                                                                     Addendum            01/01/70 00:00      
   T_T            01/01/70 00:00      

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