Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
???
03/17/05 01:19
Modified:
  03/17/05 01:33
Read: times


 		 #89835 - What stops?
Responding to: ???'s previous message
You mention, that when locking up, the timer stops. Are you sure? Isn't it that timer runs but interupt is disabled, either in IE register, or by not returning from an ISR properly using RETI?

Are you able to produce a lockup in a shorter time? With "once-in-a-week-or-so" problems I try to do this first, speeding up timers and making the mcu "busy" at the inputs. Then I try to strip down the code to a minimum version which still exhibits the problem.

You also mentioned that the ISRs modify the interrupt flags. How?

Jan Waclawek

List of 38 messages in thread
TopicAuthorDate
DS5250 Lockup in ISR's With Priority            01/01/70 00:00      
   Update:            01/01/70 00:00      
      Software Bug            01/01/70 00:00      
      using what            01/01/70 00:00      
         register banks            01/01/70 00:00      
            Shared Data Problem            01/01/70 00:00      
            What stops?            01/01/70 00:00      
               timer isr stops            01/01/70 00:00      
                  Hunting down the ghost            01/01/70 00:00      
   Using different banks            01/01/70 00:00      
      Can't be            01/01/70 00:00      
         stack            01/01/70 00:00      
            more on ISRs            01/01/70 00:00      
         DS5240 has a 1k stack.            01/01/70 00:00      
            but are you using it            01/01/70 00:00      
               Stack            01/01/70 00:00      
   ISRs with Own Register Banks.            01/01/70 00:00      
      Good Questions on ISR's            01/01/70 00:00      
         Shared Data            01/01/70 00:00      
         Not a given            01/01/70 00:00      
            Variable in isr            01/01/70 00:00      
               Sometimes true            01/01/70 00:00      
                  Atomic Operations            01/01/70 00:00      
                     re explosive bytes            01/01/70 00:00      
                        Common Solutions            01/01/70 00:00      
                           Stop's the timer            01/01/70 00:00      
                              Code            01/01/70 00:00      
                        Explosions everywhere            01/01/70 00:00      
                           atomic explosions            01/01/70 00:00      
                              Unreal Time Explosions            01/01/70 00:00      
               Look at the ASM            01/01/70 00:00      
         I have had a very similar problem            01/01/70 00:00      
      ASM instructions & USING            01/01/70 00:00      
         Please do tell us....            01/01/70 00:00      
            Do I really have to?            01/01/70 00:00      
            Brian, Michael            01/01/70 00:00      
               ASM instructions & USING            01/01/70 00:00      
         probably not the case here            01/01/70 00:00      

Back to Subject List