> >> AVR Studio won't connect. I select JTAGICE and COM5, and it just pauses
> >
> >true; the AVR-USB-JTAG requires target power.
>
> .. just like the Atmel JTAGs - it's for the JTAG's level converter chips
That much I can understand, but it seems like the actual micro inside
the USB-JTAG is powered off the target, since you can't upgrade the
firmware unless you're connected to a powered target.
Reply by Frank-Christian Kruegel●January 11, 20062006-01-11
On 10 Jan 2006 17:16:02 -0800, "larwe" <zwsdotcom@gmail.com> wrote:
>larwe wrote:
>
>> AVR Studio won't connect. I select JTAGICE and COM5, and it just pauses
>> for a little while then returns to the select-port dialog.
>
>This turns out to be a case of RTFM, sorta. Olimex's web page
>http://www.olimex.com/dev/avr-usb-jtag.html says "no need for external
>power supply as takes power from USB port". This turns out not to be
>true; the AVR-USB-JTAG requires target power.
.. just like the Atmel JTAGs - it's for the JTAG's level converter chips
that make the device work with targets with different Vcc as far as I
remember.
Mit freundlichen Gr��en
Frank-Christian Kr�gel
Reply by larwe●January 10, 20062006-01-10
larwe wrote:
> AVR Studio won't connect. I select JTAGICE and COM5, and it just pauses
> for a little while then returns to the select-port dialog.
This turns out to be a case of RTFM, sorta. Olimex's web page
http://www.olimex.com/dev/avr-usb-jtag.html says "no need for external
power supply as takes power from USB port". This turns out not to be
true; the AVR-USB-JTAG requires target power.
Reply by Leon●January 10, 20062006-01-10
Try posting to the SFE forum, or see if anyone there has the same
problem.
Leon
Reply by larwe●January 9, 20062006-01-09
Rocky wrote:
> > I installed the latest driver from FTDI, and it mounted the device as
> > COM5. I can't find any method in registry or control panel to change
>
> XP(sp2)
> DeviceManager->Ports->Com5->Properties->Advanced->DropDown
Ah, I'll try moving it to COM2 when I get home. I noticed that Olimex
mentioned problems with firmware upgrades on ports > 2. Thanks.
Reply by Rocky●January 9, 20062006-01-09
larwe wrote:
<snip>
> I installed the latest driver from FTDI, and it mounted the device as
> COM5. I can't find any method in registry or control panel to change
> that, by the way.
Has anyone successfully used this product?
I posted a query here a week or two ago, no replies - so I ordered one
from Spark Fun Electronics. It arrived with the wrong USB cable (they
shipped A to B, it requires A to A) and SFE never responded to my email
asking for the problem to be corrected (note to self: buy elsewhere
next time). So I cannibalized two other USB cables and got it
connected.
I installed the latest driver from FTDI, and it mounted the device as
COM5. I can't find any method in registry or control panel to change
that, by the way.
AVR Studio won't connect. I select JTAGICE and COM5, and it just pauses
for a little while then returns to the select-port dialog.
It is possible my target isn't working properly yet - but shouldn't AVR
Studio connect to the ICE even if there is no target connected? It's
not establishing any communication whatsoever.