[NSWI004] Timer enabling

[Vojtěch Antošík]

I believe the problem is actually somewhere else. Interrupt vector table
(or whatever it's called) only dumps registers and switches msim to
interactive mode. I am not completely sure whether it is meant to be part
of the assignment or not (more likely just a forgotten part of exception
handling implementation) but you have to change those instructions to make
it actually jump to the handler when an interrupt is raised.

po 2. 12. 2019 v 22:44 odesílatel Vojtech Horky <horky at d3s.mff.cuni.cz>
napsal:

> Hello.
>
> Dne 02. 12. 19 v 22:38 Josef Starychfojtu napsal(a):
> > Hi,
> >
> > I am trying to make the interruption just work (jump to handle exception
> > code after some cycles). According to documentation, when Compare
> > register and Count register equal, it causes interrupt. I used the
> > time_interrupt_after function to set Compare = Count + X and then
> > watched their values in while loop, but nothing happens, even tho Count
> > was greater than Compare after a while. I have just a simple debug print
> > in handle_exception_general function and it is not triggered. I
> > call time_interrupt_after and interrupts_restore(true) (tried even
> > without it) in main function of a thread. Any suggestions on what am I
> > doing wrong?
>
> Your explanation is correct, it only misses one extra point. Timer
> interrupt is not triggered when interrupts are disabled. I would thus
> suggest checking that.
>
> - VH
>
> >
> > Thanks !
> >
> > Josef Starychfojtu
> >
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