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MRT DUAL-NAS unbricking problems

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HWguru

NAS2000-Team

Posts: 1,039

Location: Wien

21

Monday, February 2nd 2009, 10:34pm

Here is an example of a buffered JTAG cable.
The transistor for RST is not needed for our NAS.
We only need TCK, TMS, TDI, TDO, GND (and VCC for the buffer)

For a first test you could add the buffer for TDO only.

HWguru
Leute ohne Laster haben oft wenige Tugenden...
NAS2000 2.3.2.IB.2.RS.1+Lüfterabschaltung+SSH+do_it+zusätzliche commandline tools+changed root password
1. suchen - lesen - Google - lesen - 1. Fragen gehören ins Forum, dann profitieren alle davon!

HWguru

NAS2000-Team

Posts: 1,039

Location: Wien

22

Friday, February 6th 2009, 10:23am

Hello Vassilis,
any success?

These days a user got exactly the same error as you

Source code

 
1
2

Testing cabletype 1
JTAG-IDCODE: 0x00000bc1 - not OK

He sent me his board and cable.

The only thing I had to modify was to make a better and shorter GND connection.
He had a 20 pin flat cable. There are a lot of GND pins (4,6,...20). I soldered them togehter and then directly to the GND of the 25pin connector.
After this modification it worked.

HWguru
Leute ohne Laster haben oft wenige Tugenden...
NAS2000 2.3.2.IB.2.RS.1+Lüfterabschaltung+SSH+do_it+zusätzliche commandline tools+changed root password
1. suchen - lesen - Google - lesen - 1. Fragen gehören ins Forum, dann profitieren alle davon!

csystem

Beginner

Posts: 15

Location: GREECE

23

Thursday, March 26th 2009, 1:27am

Hello HWguru

The last month is not have more free time and is not try nothing , aslo I made one board with Buffer but is not finish for the same reason .

I have read the last information to send me , the system to work is with Buffer or not ? is possible to send same photo for the modification to made and you have possitive solution ?.

I try and this time , and after if would like send you the board , is one good problem for ... :comp01:

Vassilis

Csystem
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