Hi Ulrik
I don't know much about j-link as I have been primarily using another debugger (BDI3000) but
looking at your log, it potentially tells me that soon after your board booted but before the debugger
could halt it, it perhaps crashed :
Hi Sinan, thanks for taking the time,
Unfortunally I don't have the WaRP board. But it seems to be the only way to get going.
As I understand it, NXP do not supply hardware nor suggest a third party solution to program their iMX processors. Bad support!
Hi ulrik
one can check if signal JTAG_MOD=0, it is routed on connector but not
grounded as on Sabre board. Also this may be posted on segger forum as
"Cannot connect to target" error may be due to wrong J-Link i.MX7 script on some releases:
http://forum.segger.com/index.php?page=Thread&threadID=3914
Best regards
igor
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Hi,
JTAG_MOD is grounded and I have also tried to pull it high once. That changed the JTAG chain as expected.
I don't see how the link you sent is related to my problem. I am not using any script for the solo CPU.
Another difference is that I have 1.8 V at the JTAG instead of 3.3 V as on the Sabre. Can that give timing issues?
Any other suggestions?
Any updates?
probably correct number of cores should be configured in script,
since script was developed by segger seems more appropriate
to post issue on segger forum.
Best regards
igor
Hi,
I did. They said, that the solo core CPU has no jtag chain, and therefore a script is not needed. Just use the generic A7 core option. Is that also your opinion?
So what support do you give to customers, how buy the WaRP7 board? What debugger do you suggest them to use?
Hi Ulrik,
i.MX 7 scan chain is shown in Figure 4-24. This has to be configured properly in JTAG tool, so it's really a question of Segger J-Link setup.
When you start the i.MX 7, try to boot it in serial download mode. U-boot/Linux may disable clock to jtag and thus prevent it from operating properly.
br,
Vladan