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Re: [avrdude-dev] Yet another config parameter
From: |
Brian Dean |
Subject: |
Re: [avrdude-dev] Yet another config parameter |
Date: |
Fri, 21 Feb 2003 10:28:50 -0500 |
User-agent: |
Mutt/1.4i |
On Fri, Feb 21, 2003 at 10:11:18AM +0100, Joerg Wunsch wrote:
> ...except for the AT90S1200 that doesn't offer this option. This was
> probably the first AVR that offered ISP mode.
I didn't notice that.
> I wonder whether we should provide a "hold /RESET low until someone
> presses <Enter>" mode for avrdude, so a user can:
>
> . start avrdude, telling it to assert /RESET,
> . connect the AVR's power supply,
> . tell avrdude that it could start now (by pressing Enter).
Can this alse be acheived by using the -E exitspecs feature? The
sequence might be:
. avrdude -p 1200 -E reset # pull reset low
. apply power to the board
. avrdude -p 1200 ...
I theory this may work. In practice it might not if there is a buffer
chip in between the parallel port and the device (better programmers
have one), and if the /RESET line is going through the buffer instead
of directly connected. If the /RESET is a pass-thru, bypassing the
buffer chip then it should work.
But in general, I think your solution would work for all boards,
whereas utilizing the existspecs would not work for all programmers.
-Brian
- [avrdude-dev] Yet another config parameter, E. Weddington, 2003/02/20
- Re: [avrdude-dev] Yet another config parameter, Brian Dean, 2003/02/20
- Re: [avrdude-dev] Yet another config parameter, Joerg Wunsch, 2003/02/20
- Re: [avrdude-dev] Yet another config parameter, Brian Dean, 2003/02/20
- Re: [avrdude-dev] Yet another config parameter, Joerg Wunsch, 2003/02/20
- Re: [avrdude-dev] Yet another config parameter, Brian Dean, 2003/02/20
- Re: [avrdude-dev] Yet another config parameter, Joerg Wunsch, 2003/02/21
- Re: [avrdude-dev] Yet another config parameter,
Brian Dean <=
- Re: [avrdude-dev] Yet another config parameter, Brian Dean, 2003/02/21
- Re: [avrdude-dev] Yet another config parameter, Joerg Wunsch, 2003/02/21
- Re: [avrdude-dev] Yet another config parameter, Brian Dean, 2003/02/21
- Re: [avrdude-dev] Yet another config parameter, E. Weddington, 2003/02/21
- Re: [avrdude-dev] Yet another config parameter, Joerg Wunsch, 2003/02/21
- Re: [avrdude-dev] Yet another config parameter, Brian Dean, 2003/02/21
- Re: [avrdude-dev] Yet another config parameter, E. Weddington, 2003/02/21
- Re: [avrdude-dev] Yet another config parameter, Theodore A. Roth, 2003/02/21
- Re: [avrdude-dev] Yet another config parameter, E. Weddington, 2003/02/21
- Re: [avrdude-dev] Yet another config parameter, Brian Dean, 2003/02/21