ARM Technical Support Knowledge Articles

RECOVER STR75X WHEN JTAG DISABLED

Applies to: MCBSTR750 Evaluation Board

Answer


Information in this article applies to:


QUESTION

I cannot connect to the STR75x device on my board. Instead I get messages like:

Couldn't stop ARM device

What can cause this on the STR750 STMicroelectronic Device?

ANSWER

The JTAG interface can be disabled by random CPU instructions or by the power-down mode of the device.  To correct this, enable the on-chip boot loader, allowing the STR75x device to execute a valid program.

Setting the following configuration pins enables the on-chip boot loader:

BOOT0 = 3.3V
BOOT1 = GND

MORE INFORMATION

SEE ALSO

Article last edited on: 2006-11-30 14:35:39

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