RTEMS Class example Timer : strange behaviour (to me)

[pierre kestener]

More about timer example problem in Leon2 BSP :

I have tried different couples RTEMS toochain / RTEMS src :
- 4.9.0 from rtems.org
- RCC 1.1.1 from Gaisler (RTEMS scr 4.8)
- RCC 1.1.99.1 from Gaisler (downloaded in Feb 2009)
- RCC 1.1.99.3 from Gaisler (downloaded today)

the problem described below only appears with the latest Gaisler 
toolchain/src 1.1.99.x

everything is fine when using the release toolchain/src 4.9.0 (from 
rtems.org) or with the older Gaisler toolchain/src couple.

I haven't tried a more recent toolchain/src neither the CVS sources.

Pierre.

pierre kestener a écrit :
> Hello,
>
> I am running the timer class example on real hardware (Sparc/Leon2) 
> with printing on console.
>
> Timer1 and 2 service routines are each set with a 2 seconds interval, 
> but I noticed that
> after 2 fireouts, time between 2 LED_ON (or LED OFF)  prints becomes 4 
> seconds.
> To illustrate this, I put a rtems_time_of_day  global variable named 
> "now" in the source code to use it to print time.
>
> Here is the corresponding output :
>
> *** LED BLINKER -- timer ***
> LED ON  00:00:00   
> 01/01/2009                                                  LED OFF  
> 00:00:01   01/01/2009                                                 
> LED ON  00:00:02   
> 01/01/2009                                                  LED OFF  
> 00:00:03   01/01/2009                                                 
> LED ON  00:00:05   
> 01/01/2009                                                  LED OFF  
> 00:00:07   01/01/2009                                                 
> LED ON  00:00:09   
> 01/01/2009                                                  LED OFF  
> 00:00:11   01/01/2009                                                 
> LED ON  00:00:13   
> 01/01/2009                                                  LED OFF  
> 00:00:15   01/01/2009                                                 
> LED ON  00:00:17   01/01/2009
>
> I also noticed that if I comment the line calling Timer2 service routine
> Timer_Routine(Timer2, NULL);
> in the Init task, then Timer1 is called twice and then it stops, no 
> print anymore.
>                    *** LED BLINKER -- timer ***
> LED ON  00:00:00   
> 01/01/2009                                                  LED ON  
> 00:00:02   01/01/2009                                                 
>
> Can someone help me and give some explanation of what seems strange to 
> me ?
> Thank you in advance.
>
> Pierre Kestener.
>