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???
02/06/07 13:03
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#132122 - UART ISR at high baud rates
Responding to: ???'s previous message
is often a problem, if not well thought out.

whether C or assembler, count the cycles in the (compiled) assembly and see if the ISR is fast enough. DO remember, that you, in your test, have to count the time for both receive and transmit. Also, if you have other ISRs, try setting the UART ISR at high priority.

One of those two is the likely culprit.

Erik

List of 36 messages in thread
TopicAuthorDate
better version of hyperterminal?            01/01/70 00:00      
   Teraterm            01/01/70 00:00      
      depends            01/01/70 00:00      
         thanks            01/01/70 00:00      
            the simplest case            01/01/70 00:00      
               true...            01/01/70 00:00      
   PuTTY is a (new!) option too            01/01/70 00:00      
      hex/decimal/ASCII?            01/01/70 00:00      
         Industrologic Term232 has some features...            01/01/70 00:00      
            Nice, thanks!            01/01/70 00:00      
            Can't close port?            01/01/70 00:00      
               hackaround            01/01/70 00:00      
            report            01/01/70 00:00      
      Nice tip            01/01/70 00:00      
      thanks!            01/01/70 00:00      
      thank you            01/01/70 00:00      
   RealTerm            01/01/70 00:00      
      realterm and 2 stop bits            01/01/70 00:00      
         2 stop bits...            01/01/70 00:00      
         UART ISR at high baud rates            01/01/70 00:00      
            I'm not sure that's the issue            01/01/70 00:00      
               what derivative?            01/01/70 00:00      
                  SiLabs c8051f330            01/01/70 00:00      
                     yeah that fits            01/01/70 00:00      
                        what UART            01/01/70 00:00      
                           how can I find out?            01/01/70 00:00      
                              Have a look!            01/01/70 00:00      
                                 ok......            01/01/70 00:00      
                                    nonono            01/01/70 00:00      
                                       who cares            01/01/70 00:00      
                                          I know I am not normal            01/01/70 00:00      
                        All SILabs processors are single clockers            01/01/70 00:00      
                           there are differences....            01/01/70 00:00      
                              that's why            01/01/70 00:00      
                                 sure I know why            01/01/70 00:00      
                           there are differences....            01/01/70 00:00      

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