I cracked open the shield on my C139 and didn't see the TPs I expected from the schematic. I thought maybe the angle of the photo on osmocom hid the TPs but it really didn't.
I'll try my C115 instead since that is more clear and accessible. Flashing hello_world on my C115 seemed to fail in a similar fashion as it does on my C139 so maybe the same issue exists there.
I was wrong too... it was TP16 not TP6, so I found TP16 but still haven't located TP8 on the C139 schematic.
-Craig
________________________________ From: Craig Comstock craig_comstock@yahoo.com To: "baseband-devel@lists.osmocom.org" baseband-devel@lists.osmocom.org Sent: Thursday, October 3, 2013 9:57 AM Subject: c139/c140 jtag anyone?
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?