Re: [rtl] Problems with time and timer!

[cecil ogg <cecilogg@erinet.com>]

Kurt Renauer wrote:
> 
> Hi to everyone!
> 
> I am using RT Linux just a few days and there are some problems that I
> could NOT solve:
> 1. I started the rect_wave sample ... measured the signal with a
> logicanalyzer and found out that the measured period time did not match
> the period time of the rt_task_make_periodic function.
> What I did:
> I modified the program: just one task ... toggling a bit on LPT D0 with a
> period of 100 us -> the measured period was then 85us.
> ????

How did you set the period to be 100usec?  Note that there are 1193180
RT_TICKS in a second, and that 100 RT_TICKS is about 84usec.  To get a
period of 100usec, set the period to 119 RT_TICKS.


> 
> 2. I used the timer related functions:
> I used this timer functions within the program I described before. What I
> did: ... rt_request_timer ... rt_set_timer... I wrote a timer handler that
> toggles a LPT Bit ... etc. ...
> OK! the timer worked, but the periodic tasks did not run?!
> Why not?

I can't answer this without looking at your source code.  

Cecil Ogg

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