Re: [avr-gcc-list] software restart

[Sander Pool]

Those would be the nitty gritty details, yes :-)

    Sander

----- Original Message -----
From: "Theodore A. Roth" <address@hidden>
To: "Sander Pool" <address@hidden>
Cc: <address@hidden>; "AVR Emailing List (E-mail)"
<address@hidden>
Sent: Thursday, January 16, 2003 11:21 AM
Subject: Re: [avr-gcc-list] software restart


>
>
> On Thu, 16 Jan 2003, Sander Pool wrote:
>
> :)
> :) I you have a spare IO line can't you pull _RESET_ down whenever you
like?
>
> I think you would need an external pull-up resistor for this to work since
> the IO pins are tri-stated (HI-Z) on reset. Without the pull-up, you would
> have the pin driving the RESET essentially floating, which might have
> undesirable results.
>
> You RESET handler would need to set DDRxn and PORTxn both to 1. Then you
> could generate a RESET by setting PORTxn to 0.
>
> This is my interpretation of the m128 data sheet. If I'm wrong, someone
> who knows better should correct me. ;-)
>
> Ted Roth


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