Get Error message "Bad JTAG communictaion: Write to IR: Expected 0x1, got 0xf (TAP Command : 2) @ Off 0x5

Sam33 · Jun 9th 2010, 4:28pm

Hello,

I am using the RDI Debug Interface (OEM JLINK) and Keil µVision development environment. With small example programms I can program the flash of my ADuC70xx and also can debug. But when I am using my large project I only can programm the flash, but when I want to debug I got the above error message. What could be the reason for this behaviour?

regards

Samuel

SEGGER - Alex · Jun 10th 2010, 9:24am

Hi Samuel,

could you please be a bit more precisely, which ADuC device from the 70XX series your are using?
Are you using the J-Link RDI flashloader or a flashloader from uVision?

Do I understand you correctly?:
1. You have tested flashing & debugging with a small sample project and everything works fine.
2. When you are trying to use a more complex project, flashing still works, but debugging fails.

I assume you have "run to main()" enabled, correct?
If yes: Could you please disable the "run to main()" and check (by stepping through the application) at which point this error occurrs?
As you say, another project works and flashing works on both projects, I do not think there is a general problem with J-Link + this ADuC device.

Another question: If the device has been flashed with the more complex project, where debugging fails,
is the J-Link commander (part of the J-Link software and documentation package) still able to connect to the device?

Best regards
Alex

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