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Re: [avr-chat] Avrdude and JTAG / Dragon...
From: |
Vincent Trouilliez |
Subject: |
Re: [avr-chat] Avrdude and JTAG / Dragon... |
Date: |
Mon, 2 Mar 2009 20:02:12 +0100 |
On Mon, 02 Mar 2009 11:37:33 -0500
"Graham Davies" <address@hidden> wrote:
> Vincent Trouilliez wrote:
> > Vince, just opened his mail box... received 3 brand new Mega32 ...
>
> If you're using the ATmega32, which is supported by the original JTAG ICE
> (Mk I), you should consider the AVR ICE-Cube. It has no ribbon cable at all
> and so doesn't suffer from any of the problems that have been recently
> discussed. It comes with a six foot serial cable and there is no box of any
> kind to find a place for on the bench, just the business end of the
> ICE-Cube, which is the size of, well, an ice cube, and sits above the target
> JTAG connector. You do, of course, need a serial port on your computer or a
> USB-to-serial adapter. Now, if you had a Dragon *and* an ICE-Cube, well
> then you'd be able to ...
>
> Disclosure - for those that don't know, I make and sell the AVR ICE-Cube, so
> I'm tooting my own horn here, but you've seen others speak well of the
> ICE-Cube here too.
>
> Graham.
He he, don't worry Graham ;-) I am thinking of your ICE cube ;-)
It's just the Dragon fits my needs better right now: it's versatile
(JTAG AND ISP, and also PP and HV, so I can recover my chips if I get
my fuses wrong), and it has a USB interface, and it's cheap.
And since I happen to using a mega32, I can even start playing with
JTAG debugging, to get the hang of it.
THEN, a bit later, once I have wedtted my feet with JATAG debugging,
and I (most likely) have to move away from a mega32 to mega64 as my
project grows, then at this point yes, I will be looking at an
"unrestricted" JTAG debugger.
There two little things that would keep me away from the ICE-cube:
- Since it's meant precisely to be moved around the bench and handled
by... well by hand constantly, I fear the fragile/exposed SMT
components on the tiny boards, will sooner or later get hit/damaged.
Also, I fear ESD shocks because with my big fat fingers will get all
over the components, which can't be good.
- it's got a serial interface, so I would have to add the cost of
either an unreliable (as far as I understand, there never 100% garantee
that these things work under all circumstances) RS-USB adapter, or buy
an extra PCI card just to get an extra serial port, and they aren't
cheap from what I saw, unlike what I expected.
- high cost to import and ship it from overseas
So I am also considering the USBProg project:
http://www.embedded-projects.net/index.php?page_id=165
Advantages: available from Europe so no import charges nor overseas
shipping, and it's got a native USB interface.
Down-side: the JTAG debugger firmware is currently under development
as I understand it, so it may not be ready/available by the time I am
in the market for one.
So I have two options, each with their pros and cons as usual ! ;-)
So if you could consider my poijts about the ICE-cube, I would be glad
to lean your way and support you ;-)
So a native USB interface, along with a way to protect the PCB,
probably with a coat of that coloured epoxy resin. It would make
repairs next to impossible, but sending it back to you for repairs is
not economically viable anyway, so I would have to buy an other one if
ever it develops a problem anyway.
You could keep the serial ICE-cube as it is, and offer the USB version
as an option. I dunno, charge 10 USB more for the USB version.
Same for the resin protection, offer it as an option for I don't know,
5 bucks ?
Food for thoughts he ?! ;-)
Regards,
--
Vince
- Re: [avr-chat] Avrdude and JTAG / Dragon..., (continued)
- Re: [avr-chat] Avrdude and JTAG / Dragon..., Joerg Wunsch, 2009/03/02
- Re: [avr-chat] Avrdude and JTAG / Dragon..., David VanHorn, 2009/03/02
- Re: [avr-chat] Avrdude and JTAG / Dragon..., Joerg Wunsch, 2009/03/02
- Re: [avr-chat] Avrdude and JTAG / Dragon..., Vincent Trouilliez, 2009/03/02
- Re: [avr-chat] Avrdude and JTAG / Dragon..., Graham Davies, 2009/03/02
- Re: [avr-chat] Avrdude and JTAG / Dragon..., David Kelly, 2009/03/02
- Re: [avr-chat] Avrdude and JTAG / Dragon...,
Vincent Trouilliez <=
- Re: [avr-chat] Avrdude and JTAG / Dragon..., Graham Davies, 2009/03/02
- Re: [avr-chat] Avrdude and JTAG / Dragon..., Vincent Trouilliez, 2009/03/02
- Re: [avr-chat] Avrdude and JTAG / Dragon..., Russell Shaw, 2009/03/02
- Re: [avr-chat] Avrdude and JTAG / Dragon..., Vincent Trouilliez, 2009/03/02
- Re: [avr-chat] Avrdude and JTAG / Dragon..., David Kelly, 2009/03/02
- Re: [avr-chat] Avrdude and JTAG / Dragon..., David VanHorn, 2009/03/02
- Re: [avr-chat] Avrdude and JTAG / Dragon..., Vincent Trouilliez, 2009/03/02
- Re: [avr-chat] Avrdude and JTAG / Dragon..., Robert L Cochran, 2009/03/02
- Re: [avr-chat] Avrdude and JTAG / Dragon..., Vincent Trouilliez, 2009/03/02
- Re: [avr-chat] Avrdude and JTAG / Dragon..., Graham Davies, 2009/03/02