Hello,

I have pushed the simtrace2 dummy message “hack” mentioned below to here: https://gerrit.osmocom.org/c/simtrace2/+/26864

I do not necessarily intend for this to be merged. Rather, I wanted you to see what workaround was applied.

Regards,

James

From: James Tavares <jtavares@kvh.com>
Date: Monday, January 10, 2022 at 2:21 PM
To: simtrace@lists.osmocom.org <simtrace@lists.osmocom.org>
Subject: Simtrace2-tool communications issue

As an experiment: With the Atmel processor in this state, I modified simtrace2-tool to send two commands back to back: a dummy message, followed by the real message. When I do this, the first dummy message is dropped, as described above, but the second is executed successfully!  For some reason, you cannot get it to work by simply invoking simtrace2-tool twice at the shell— critically, you have to send both messages without closing and re-opening libusb in-between.