Content originally posted in LPCWare by clcorbin on Wed Apr 09 18:25:34 MST 2014
To make things even more interesting, I WAS able to successfully debug (multiple times no less) this 11C24 board using the J-Link. I did have to use the LPC-Link2 to provide 3.3V power and I used jumper wires to connect the same 9 pin (not 10 like I thought before) connector to the J-Link's 20 pin cable. It worked perfectly even if it WAS a mess on the desk!
After scratching my head a bit, I decided to give the LPC-LINK2 another try. This time, I used the SAME jumper wires used with the J-Link to connect to J6 on the LPC-Link2. They worked with the J-Link, so they should work with the LPC-Link2 I would think. I also pulled up the LPCXpresso 11C24 board schematic and the LPC-LINK2 schematic to make SURE that the LPCXpresso target connectors were wired exactly the same between boards (they were).
And the silly thing still doesn't work.
The next test was to apply flux to the header in J6 and resolder each of the terminals in case one is not soldered in well. I know the header on the target works because it works with the J-Link. And again, needless to say, there was no difference.
Now I'm starting to wonder if I don't have any issue with the LPC-Link2. The transceiver perhaps? Does anyone have any suggestions on what to scope out to test this? What's the chance it was bad from the start? I would assume it was tested before it was packaged.
Clint