ARM Technical Support Knowledge Articles

RECOVER STR71X WHEN JTAG DISABLE

Applies to: ULINK USB-JTAG Debugger

Answer


Information in this article applies to:


QUESTION

I cannot connect to the STR71x device on my board. Instead I get messages like:

Couldn't stop ARM device

What can cause this on the STR7 STMicroelectronic Device?

ANSWER

The JTAG interface might be disabled by random CPU instructions or by the power-down mode of the device. In this case you might enable the on-chip boot loader, so that the STR71x device can execute a valid program.

The on-chip boot loader is enabled by the following settings on the configuration pins:

MORE INFORMATION

SEE ALSO

Article last edited on: 2007-01-28 19:16:09

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