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stlink swo usb capture tool heh ;) it works :) Dependencies ============ pyusb >= 1.x (Tested with 1.0.0-0.4.a2.fc18) (you have to work out udev rules yourself....) Basic Usage =========== python hack.py connect swo_file blahblahblah.log swo_start stimulusbitmask .... swo_start otherstimulusmask ... exit (or ^d) in another window: # to see everything... python swodecoder.py -f blahblahblah.log # to see just stimulus port 2 python swodecoder.py -f blahblahblah.log -a 2 Tips ==== You _probably_ will want to edit swodecoder.py, in the PacketParser's target parameter, if you want to change the output formatting. http://false.ekta.is/2013/12/using-swoswv-streaming-data-with-stlink-under-linux-part-2/ Bugs ==== The STLink firmware gets into some screwy states sometimes, you need to unplug/replug to get it back. Boo :( (This is a bug in swopy's USB handling) After streaming for a while, stably writing 40-60KB/sec, and seeing consistent 300-800bytes SWO data per frame, you'll see the STLink report that it has ~64KB to dump, and then it gets a USB Transfer error and locks up. Boo :( As best I can tell that's a firmware bug on the STLink, there's no field I can tell in the USB responses to indicate there's any sort of overflow) Sometimes the stimulus bits are weird. Writing to bits that _should_ turn on the channel you want doesn't. Boo :( No idea what's going on there.