Products > Test Equipment

Sniffing the Rigol's internal I2C bus

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AndersAnd:

--- Quote from: apelly on December 10, 2013, 10:44:21 pm ---
--- Quote from: marmad on December 10, 2013, 03:46:41 pm ---and as far as I know, no A-model owner has attempted to just downgrade to a v.1 firmware, run the keygen, and then upgrade back to v.2 (not sure why).

--- End quote ---
Busy with life. Maybe today.

--- End quote ---

--- Quote from: apelly on November 29, 2013, 10:38:25 am ---Ordered a bus blaster tonight. Will be here in a week or so. Plan is to extract the 2072A firmware.

--- End quote ---
Have you received your Dangerous Prototypes Bus Blaster yet? Maybe it would be best to do a JTAG memory dump on your DS2000A scope before modding it?
Noone has posted a JTAG memory dump from DS2000A yet.

Which Bus Blaster version did you order, v3 or v4?
Bus Blaster v3 http://www.seeedstudio.com/depot/bus-blaster-v3-p-1415.html
Bus Blaster v4 http://www.seeedstudio.com/depot/bus-blaster-v4-p-1416.html

alank2:

--- Quote from: AndersAnd on December 10, 2013, 11:01:27 pm ---Noone has posted a JTAG memory dump from DS2000A yet.

--- End quote ---

Is there a JTAG memory dump from the DS2000 somewhere?  Where?

alank2:
Dave's teardown talks about a Lattice Mach IO PLD - any idea what would be the likely way the Blackfin would communicate with this?

AndersAnd:

--- Quote from: alank2 on December 10, 2013, 11:10:49 pm ---
--- Quote from: AndersAnd on December 10, 2013, 11:01:27 pm ---Noone has posted a JTAG memory dump from DS2000A yet.

--- End quote ---
Is there a JTAG memory dump from the DS2000 somewhere?  Where?

--- End quote ---
I think cybernet has done a JTAG dump: https://www.eevblog.com/forum/testgear/sniffing-the-rigol's-internal-i2c-bus/msg241335/#msg241335
But I'm not sure he has uploaded it, but you could try to ask him for it.

apelly:

--- Quote from: AndersAnd on December 10, 2013, 11:01:27 pm ---Have you received your Dangerous Prototypes Bus Blaster yet? Maybe it would be best to do a JTAG memory dump on your DS2000A scope before modding it?
Noone has posted a JTAG memory dump from DS2000A yet.

--- End quote ---
Hasn't arrived yet. Did get a shipping note a few days ago. Will check the post box this afternoon.

You raise a good point. I will get what I can with JTAG before I dick around with the firmware.


--- Quote from: AndersAnd on December 10, 2013, 11:01:27 pm ---Which Bus Blaster version did you order, v3 or v4?
Bus Blaster v3 http://www.seeedstudio.com/depot/bus-blaster-v3-p-1415.html
Bus Blaster v4 http://www.seeedstudio.com/depot/bus-blaster-v4-p-1416.html

--- End quote ---
v4

Carrington has given me his notes and data for emulating a JTAGkey, but that might still take a while to set up.

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