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MCBSTR750: RECOVER STR75X WHEN JTAG DISABLED


Information in this article applies to:

  • MCBSTR750 Evaluation Boards

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

FORUM THREADS

The following Discussion Forum threads may provide information related to this topic.

Last Reviewed: Thursday, November 30, 2006


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