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Konstantinos L. Angelis
10/31/11 16:51
Read: 487 times
Lamia
Greece


 
#184495 - SPI at 100Kbps
Responding to: Erik Malund's previous message
it is only attainable if EVERYTHING ELSE (ISRs, main, ...) is stopped. for a while !

Let's say that using burst mode for 1ms every 50ms. Then the slave system is stopped for 1ms and free for operations the other 49ms, that yields to 98% free for normal (not SPI) activities. The master system gives the rate of the slave should be used to accept/respond to commands.

List of 20 messages in thread
TopicAuthorDate
SPI Slave in 89S52      Alexandre Marques      10/30/11 13:35      
   Get real processor      Per Westermark      10/30/11 14:29      
      Topic Author Date      Alexandre Marques      10/30/11 14:46      
         Big problem      Per Westermark      10/30/11 16:01      
         Look for a different model      David Prentice      10/30/11 18:31      
         Try 8051 BASCOM      KONSTANTINOS L. ANGELIS      10/31/11 05:37      
            at what speed      Erik Malund      10/31/11 07:06      
               Interpreters have an easier life.      Per Westermark      10/31/11 08:54      
               Soft SPI speed      KONSTANTINOS L. ANGELIS      10/31/11 09:31      
                  But how to combine that loop with a real program?      Per Westermark      10/31/11 09:44      
                     and more      Erik Malund      10/31/11 09:51      
                        Software master trivial - slave is not      Per Westermark      10/31/11 10:52      
                           SPI analysis is made, results?      KONSTANTINOS L. ANGELIS      10/31/11 14:43      
                              There _may_ be a solution - but maybe not acceptable      Per Westermark      10/31/11 16:05      
                  sure, and so what?      Erik Malund      10/31/11 09:47      
                     SPI at 100Kbps      KONSTANTINOS L. ANGELIS      10/31/11 16:51      
                        Still gives puny transfer rate with significant limitations      Per Westermark      11/01/11 01:05      
                           the answer is      Erik Malund      11/01/11 06:37      
   Fully Interlocked Handshaking.      Michael Karas      11/01/11 08:01      
      Quite common      Per Westermark      11/01/11 08:52      

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