jtavares has posted comments on this change. ( https://gerrit.osmocom.org/c/simtrace2/+/26864 )
Change subject: simtrace2-tool: hack: kick the comms by sending a fake message ...................................................................... Patch Set 1: (1 comment) Patchset: PS1: Hello All, Just bumping this commit for reconsideration. I know it is hack, but it has proved very useful in our environment. Some additional background: The simtrace2 firmware appears to have a problem (probably a race condition of some sort, with the USB stack) where it accepts the first USB message sent by simtrace2-list after a reset, but then ignores others. During investigation, it was noticed that when sending two commands in a row from a single instance of simtrace2, the first is ignored, and the second is processed. So, a hack was put into `simtrace2-tool` so that it sends a fake, empty, error message, to kick the remote SIM firmware into accepting the second, real message. The strange thing is, that when you send two messages like this, it has the side effect of keeping the processor from getting stuck. So, something about sending two messages has two effects 1.) it kicks the SIM firmware, if it is stuck, and 2.) prevents the SIM firmware from getting stuck in the first place. -- To view, visit https://gerrit.osmocom.org/c/simtrace2/+/26864 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: simtrace2 Gerrit-Branch: master Gerrit-Change-Id: I40fa06bee5d8194516497e16597e069124ddf0fb Gerrit-Change-Number: 26864 Gerrit-PatchSet: 1 Gerrit-Owner: jtavares <jtava...@kvh.com> Gerrit-Reviewer: Hoernchen <ew...@sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: tsaitgaist <kre...@sysmocom.de> Gerrit-CC: laforge <lafo...@osmocom.org> Gerrit-Comment-Date: Sun, 13 Nov 2022 20:27:40 +0000 Gerrit-HasComments: Yes Gerrit-Has-Labels: No Gerrit-MessageType: comment
