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Re: JTAG can not find ARM CPU ID

Question asked by shane91773 on Aug 7, 2013
Latest reply on Aug 7, 2013 by shane91773
Branched from an earlier discussion

Hi PatrickN,


My ADuC7126 eval board was working fine and all of sudden I got the following error:


***JLink Error: ADI system TAP: Could not read CPU core Id.


I did what you suggested and set my debug settings to 800KHz, selected reset strategy, debug cache option and trace option on my Keil IDE. 




Next, from DOS command, I typed "jlink.exe -device ADuC7126". 



After I did these things and tried to run my code via the mIDAS-Link (with v4.74a), I still got the following:


***JLink Error: Bad JTAG communication: Write to IR: Expected 0x1, got 0xF (TAP Command : 15) @ Off 0x5.


My eval board was all working fine until last night when I tried to run this new ADuC7126 project.  Do you have any other suggestions on how to recover from this problem?  I can send you my project if you needed.  Thanks.