3 Jan
2022
3 Jan
'22
11:08 a.m.
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
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<html><body><div style="color:#000; background-color:#fff;
font-family:arial, helvetica, sans-serif;font-size:10pt">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.<br><br>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?<br><br>From what I can
gather from the schematics:<br>TDI - TP8<br>TCK - TP17<br>TDO -
TP6<br>TMS - TP18<br><br>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.<br><br>I can't seem to find TP6 or TP8 anywhere on the
schematic.<br><br>-Craig<br><div><br></div></div></body></html>
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