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???
10/17/06 14:26
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 		 #126579 - re; control task
Responding to: ???'s previous message
Yu,

What you need in order to control a stepper and also interpret RS-232 commands is two processors. One processor recieves and interprets the RS-232 commands and the other processor controls the stepper. The processor controlling the stepper is the the master and the processor recieving the RS-232 commands is the slave. The master processor then lets the slave processor know via interrupt when it is not busy so that it can recieve the interpreted commands from the slave.

It really doesn't matter if you get a faster processor unless that processor has a sizeable harware communication buffer to store characters coming in from the RS-232 link.


Jacob


List of 43 messages in thread
TopicAuthorDate
How to calculate CPU usage?            01/01/70 00:00      
   Generally            01/01/70 00:00      
      multicore '52?            01/01/70 00:00      
   Keil Tools            01/01/70 00:00      
   With what tools ?            01/01/70 00:00      
      Always 100.0%            01/01/70 00:00      
      Or            01/01/70 00:00      
         LED?            01/01/70 00:00      
            A way, Not the Way            01/01/70 00:00      
               spelling and syntax, just as an aside            01/01/70 00:00      
                  Thanks guys.            01/01/70 00:00      
                     What would that tell you?!            01/01/70 00:00      
                        100% is not always 100%            01/01/70 00:00      
                           Idle Not Idle            01/01/70 00:00      
                              We can not see your code            01/01/70 00:00      
                                 60% is not arbitrary            01/01/70 00:00      
                              Run a co-operative tasker!            01/01/70 00:00      
                                 he is doing the right thing, why lead him astray            01/01/70 00:00      
                              WHY            01/01/70 00:00      
                     then this is off-topic            01/01/70 00:00      
                        This isn't the Keil forum, so why ?            01/01/70 00:00      
                  My spelling sucks            01/01/70 00:00      
   Be sure to measure what's important            01/01/70 00:00      
      Good point            01/01/70 00:00      
         ISRs            01/01/70 00:00      
         Protocol?            01/01/70 00:00      
            adding a word            01/01/70 00:00      
            Checksums are not spackle            01/01/70 00:00      
         Try this            01/01/70 00:00      
            clarification            01/01/70 00:00      
               Delay.            01/01/70 00:00      
               Thanks            01/01/70 00:00      
            I'll try this!            01/01/70 00:00      
               Now try this!            01/01/70 00:00      
                  It still qualifies as simple ...            01/01/70 00:00      
                  Stepping inside ISR            01/01/70 00:00      
                     Essential things ...            01/01/70 00:00      
                  it still applies            01/01/70 00:00      
         re; control task            01/01/70 00:00      
            an added word            01/01/70 00:00      
            Buffered UART ?            01/01/70 00:00      
               there is a reason            01/01/70 00:00      
   Done!            01/01/70 00:00      

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