That would be the careful approach, but it brings in something else that folks have to understand before tweaking. Personally I don't see any downside to extending to 6000mS for any current use cases, perhaps with a parameter to tweak back down for any edge cases that get missed?

Regards

DAVE


On 18/03/2022 12:26, Tommy Murphy wrote:

Would it be better to add a command to allow the USB_TIMEOUT to be configured rather than hardcoding a specific fixed value?

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*[tickets:#343] <https://sourceforge.net/p/openocd/tickets/343/> Increase CMSIS_DAP usb timeout value*

*Status:* new
*Milestone:* 0.10.0
*Created:* Fri Mar 18, 2022 10:08 AM UTC by Gabor
*Last Updated:* Fri Mar 18, 2022 10:08 AM UTC
*Owner:* nobody

The linux USB stack locks up for 5 seconds if there's an unreponsive USB device, while linux is trying to reconnect.

If I halt my device under test, it causes the above linux usb stack bug and my openOCD connection with my DAPLink breaks.

The best solution I've found is increasing the USB_TIMEOUT to 6000ms in cmsis_dap.c. What do you think about submitting this fix? If there's an easy way for me to create the CL, I'm happy to do so.

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