c139/c140 jtag anyone?

[Craig Comstock]

I'm at the point w/ flashing firmware where I feel like I need to use a debugger w/ JTAG. I figured I could probably use serial line logging somehow but JTAG seems better and I should learn it anyway.

Has anyone pried open the shield on a c139/c140 and tried attaching to the JTAG test points that are just inside the shield next to the test points which are accessible via the battery compartment?

>From what I can gather from the schematics:
TDI - TP8
TCK - TP17
TDO - TP6
TMS - TP18

Looking at the board from the battery compartment side with the top of the phone pointing North/Up I see at least TP17 is near the right-hand bank of test points visible from the battery compartment. From left-to-right there I see something like: TP12, TP18?, TP16?, TP17 so it looks like I have two of the TPs I need: 17 and 18.

I can't seem to find TP6 or TP8 anywhere on the schematic.

-Craig
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osmocom.org/pipermail/baseband-devel/attachments/20131003/c687a4b1/attachment.html>