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Edinburgh, Scotland, UK
October 21 & October 25 | Co-Located Events, Tutorials, & Workshops
October 22-24 | Conference
Find out more information for Open Source Summit + Embedded Linux Conference & OpenIoT Summit Europe 2018

Please note that you can view and download presentations on the Open Source Summit and Embedded Linux Conference + OpenIoT Summit slides pages. 
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Wednesday, October 24 • 15:05 - 15:45
Power Debugging with JTAG - Patrick Titiano & Alexandre Bailon, BAYLIBRE

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Debugging power management issues is traditionally done via the serial console, Android USB/ADB, or SSH eventually. Besides being tedious, it is also intrusive debugging (CPU “regular” execution flow periodically interrupted to log traces over the UART, a rather slow interface with blind windows during CPU power transitions). But there is another option: the JTAG port. Well known for deep kernel debugging, it used to be less popular for power debugging. Well, until now! JTAG port offers the only non-intrusive solution to monitor system activities. Leveraging already-available python libraries, it is now possible to monitor key power indicators (clock rates/states, power states, voltages, bus stats, etc) without altering the use-case power profile, from your host PC.

Motivations, challenges, benefits, and results will be further exposed, including a demo of a “power dashboard” application.

Speakers
AB

Alexandre Bailon

Embedded Linux Kernel Senior Developper, BAYLIBRE
Alexandre Bailon is a co-founder of BayLibre, an embedded Linux consultancy, where he developed USB gadget support for Google’s Project Ara modular phone, and currently implementing power optimization for iMX7ULP SoC. Before co-founding BayLibre, Alex worked at Texas Instruments... Read More →
avatar for Patrick Titiano

Patrick Titiano

System Power Management Expert, BAYLIBRE
Patrick Titiano has 18 years of engineering experience in embedded technologies. Patrick spent 9 years at Texas Instruments as an OMAP Power Management Expert (from architecture to use-case power optimization). Patrick also developed embedded diagnostic open source tools (“omapconf... Read More →



Wednesday October 24, 2018 15:05 - 15:45
Lennox 2, Level -2

Attendees (145)