RE: [avr-gcc-list] jump_to_null question

[Eric Weddington]

> -----Original Message-----
> From: 
> address@hidden 
> [mailto:address@hidden
> org] On Behalf Of Juergen Harms
> Sent: Thursday, May 24, 2007 8:19 AM
> To: address@hidden
> Subject: Re: [avr-gcc-list] jump_to_null question
> 
>  > The best way to reset is to enable the watchdog timer on 
> the shortest
>  > time-out, go into an infinite loop, and let the watchdog reset the
>  > AVR. Depending on which AVR you are using, you will have 
> to turn off
>  > the watchdog timer after reset, with code in the .init3 
> section, for
>  > example.
> 
> Interesting. I use a system-disaster procedure for impossible cases 
> which I want to be able to resconstruct - it saves some 
> information in 
> eeprom and does __init () - which is where the reset vector ends up. 
> Nice hint, that needs to be corrected. Reading the code of 
> __init I now 
> realise that __init is only a prolog for launching the 
> compiled program. 
> Even for a software disaster handler, the watchdog reset is certainly 
> preferable, I assume it will clean pending interrupts, reset hardware 
> counters, etc. A candidate for the FAQ's (How do I hard-reset 
> my system?) ?

Yes, it resets all the registers to their default state.

You're right, it should be in the FAQ. I'll put that on my list.

Thanks,
Eric Weddington