The Power-Supply Subsystem – Sebastian Reichel, Collabora



The Power-Supply Subsystem – Sebastian Reichel, Collabora

Do you know how batteries and battery chargers are handled in the Linux kernel subsystem? While not as complex as the DRM subsystem, the power-supply subsystem is a key part of embedded mobile devices running Linux. This talk will give an overview of the subsystem, from hardware (e.g. what’s a smary battery), to sysfs and uevent API exposed to userspace. We’ll then demonstrate a template driver instantiated from device tree, and review typical mistakes that can occur along the way. Lastly, we’ll discuss some of the shortcomings of the subsystem.

About Sebastian Reichel
Sebastian Reichel works for Collabora’s Core team on hardware enablement. He is the kernel subsystem maintainer for MIPI HSI (highspeed synchonous serial interface) and power-supply (battery fuel-gauge/ charger drivers). In the last few years he worked on mainline kernel support for the Nokia N series and more recently on the Motorola Droid 4. Previous speaking experience includes a talk at FOSDEM18.

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Maxim Integrated MAX14745 Wearable Charge-Management Solution — New Product Brief | Mouser



Learn More: http://mou.sr/maxim-max14745-chargers-NPB-YT

Maxim Integrated MAX14745 Wearable Charge-Management Solution consists of a linear battery charger including a smart power selector and many power-optimized peripherals, designed for low-power wearable applications such as fitness monitors and rechargeable IoT devices.

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Charging Electric Cars and Cybersecurity



Animation video about charging electric vehicles and the importance of cybersecurity.

Charging one modern electirc car equals the power-use of 10 households at peak demand. Now, imagine one million cars connected to the grid: that’s a lot of collective power! What if someone hacked the system and gained the ability to control all the chargers at the same time?

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Teardown Tuesday: Bluetooth Battery Charger



View Full Article: https://www.allaboutcircuits.com/news/teardown-tuesday-e-sys-bluetooth-battery-charger/

The Esyb E4 4-battery charger has Bluetooth LE for smartphone connectivity. This teardown looks at the components inside the charger. For more information, as well as all the latest All About Circuits projects and articles, visit the official website at http://www.allaboutcircuits.com/

Check out author’s profile on All About Circuits and see more articles and technical projects he created:
https://www.allaboutcircuits.com/author/mark-hughes

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