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Hi,
> > Is there any way of ABORTing the current program from the ISR ? I
> > want to attach a routine to 'UserISR and have it ABORT and then execute
> > POWER_OFF when the off/on button is pressed.
>
> To remove your program from the UserISR just set 'UserISR to ['] NoOp -
> or even better: to the previously stored old value.
My questions were a bit ambiguous. I don't want to abort the routine
running on the ISR; I want (from the ISR routine) to abort a currently running
user routine - eg abort something started from the console. So, for example,
if a program goes into an infinite loop, it can be aborted with a button press.
> > I would also like to know whether a user program or the idle loop
> > is running, so that the code could do different things depending on whether
> Yes, you just have to read the current value of 'UserISR.
> If no other program is hooked to the ISR this is the same as the
> execution address of NoOp.
Here, I want to find out if the forth interpreter is just sitting
waiting for input (ie is in the idle loop) or is actually running a program,
so that an ISR routine triggered by a button press can do different things
in the two situations.
Cheers,
Richard
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Message has 2 Replies:
 | | Re: Aborting from ISR
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| (...) I see. Tired of re-booting hey? :o)) There's no way already available that I know of. I think that Mr. Hempel is looking into this. Maybe if we play with the return stack... (...) The way Forth works is that it is running the program. If you (...) (22 years ago, 15-Jul-02, to lugnet.robotics.rcx.pbforth)
| | | Re: Aborting from ISR
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| Ah I see... intriguing idea :) Rereading your original post it should have been quite clear what you wanted. Unfortunately (as far as I know) Mario is right, there doesn't seem to be a clean solution other than manipulating the return stack. I've (...) (22 years ago, 16-Jul-02, to lugnet.robotics.rcx.pbforth)
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Message is in Reply To:
| | Re: Aborting from ISR
|
| (...) To remove your program from the UserISR just set 'UserISR to ['] NoOp - or even better: to the previously stored old value. (...) Yes, you just have to read the current value of 'UserISR. If no other program is hooked to the ISR this is the (...) (22 years ago, 14-Jul-02, to lugnet.robotics.rcx.pbforth)
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