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Wednesday, October 15 • 4:30pm - 5:20pm
Tame the USB Gadgets Talkative Beast - Krzysztof Opasiak, Samsung

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The new USB composite gadget ConfigFS interface allows user to compose an custom gadget form USB functions at runtime. Function logic may be placed not only in kernel modules but also in userspace using FunctionFS. Usage of legacy gadgets was reduced to one modprobe command. While new interface provides good flexibility, it might take as many as 20 commands to set up an gadget. This definitely requires userspace reaction which will tame this talkative beast.
First, this presentation will provide an overview of new USB interface features and show how to use them from command line. Then userspace response is given. Libusbg, C library for gadget management with its brand new functionality - gadget schemes will be presented. Final step is going to be introduction of gadgetd - open source daemon for convenient, system wide USB gadget and FunctionFS based services manager.
Speakers
avatar for Krzysztof Opasiak

Krzysztof Opasiak

Senior Software Engineer, Samsung R&D Institute Poland
Krzysztof Opasiak is a PhD student at Warsaw University of Technology. He works as Kernel and System Developer at Samsung R&D Institute Poland. Since 2013 involved in USB support development in Tizen OS. Maintainer of libusbgx, a library for USB gadgets management through ConfigFS... Read More →

Wednesday October 15, 2014 4:30pm - 5:20pm
Room 26
  Developer, Experience Level - Intermediate |   Embedded Linux Conference Europe, Experience Level - Intermediate

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