Subject:
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RE: power_off()
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Mon, 8 Oct 2001 15:44:10 GMT
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Reply-To:
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<RHEMPEL@BMTS.spamlessCOM>
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Viewed:
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1491 times
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> Hi
> I have been trying to get the power_off() function to work, but
> every time I
> call it it either hangs the RCX just before turning off, or turns the RCX
> off and I can not turn it back on. In both cases I have to remove the
> batteries and wait for the memory to die.
> The code I have is something like:
>
> shutdown()
> {
> cputs("end");
> msleep(1000);
> lcd_clear;
> power_off();
> }
Mike,
I ran into a similar problem when debugging pbForth years ago. Make
sure that the stack pointer is saved somewhere in the on-chip memory
of the RCX BEFORE putting the RCX to sleep.
The sleep function puts the external RAM into a low-power state that
is not restored until a little after the RCX wakes up. If the stack
pointer is aimed at the external RAM, the memory fetches will be garbage...
Hope this helps
Cheers, Ralph
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Message is in Reply To:
 | | power_off()
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| Hi I have been trying to get the power_off() function to work, but every time I call it it either hangs the RCX just before turning off, or turns the RCX off and I can not turn it back on. In both cases I have to remove the batteries and wait for (...) (23 years ago, 8-Oct-01, to lugnet.robotics.rcx.legos)
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