D8 USB Linux Drivers

Writing USB-2.0 and USB-3.0 host and gadget drivers on Linux


Objectives
	Learn to write Linux drivers for USB-2.0 and USB-3.0
		Explore the Linux USB host-driver stack
		Learn the structure of USB device drivers
		Discover USB gagdet drivers (2.0 and 3.0)
		Understand the support for OTG-2.0 and OTG-3.0.

	Understand the specifics of the Linux kernel in the management of devices and drivers.
	Learn to configure the Linux kernel for optimal hotplug management.
		Understand how hotplug events are generated and how to use them in drivers.
		Install and use external hotplug daemons: udev, libusb, etc ...

	Discover Linux kernel changes up to the latest versions (up to 3.6.39 and 3.x).
	Master the techniques of kernel debugging using Lauterbach JTAG probes.
Labs are conducted on target boards, that can be:
Dual Cortex/A9-based "SnowBall" boards from ST-Ericsson, with Lauterbach JTAG probes.
Atmel ARM9-based boards, with Lauterbach JTAG probes.
We use the last linux kernel, as delivered on www.kernel.org.


Course environment
	A PC workstation and a target board per two trainees group with Lauterbach JTAG probe.
	Printed course material.
	CDROM with documentation and exercises solutions.


Prerequisite
	Good practice of C programming on Linux
	Good knowledge of Linux kernel and driver programming (see our D3-Linux drivers and D7-Linux drivers hotplug and power management courses)

Outline


First day
Reminders on kernel programming
	Reminders on kernel module development
	Kernel objects
Exercice :			Writing a kernel module creating and using kernel objects and sets

	The sysfs file system
Exercice :			Interacting with a kernel module through a kernel object and the sysfs file sytem
Hotplug
	Hotplug in the kernel
		uevents
Exercice :			Writing a kernel module sending hotplug events to a user mode program.

	Hotplug at user level
		Udev
		Hal and Dbus
Exercice :			Cross-compiling, configuring and using Udev.
Second Day
Devices and Drivers
	The Device/Driver model in Linux
		Device class and types
		Bus drivers

	Bus types
		Generic devices and drivers
		System devices and drivers
		Platform devices and drivers
Exercice :			Writing a platform device driver showing how device matching work


USB Drivers
	The USB bus
		USB devices
		USB descriptors
		USB endpoints
		USB requests

	User view of the USB bus and devices
	USB device drivers
		Hotplug
		Communicating with devices through URBs
Exercice :			Writing a basic usb device driver using URBs
Exercice :			Writing an usb device driver using synchronous request management
Third Day
The libUSB user-mode USB driver framework
	The libUSB libraries.
		libUSB 0.1.12.
		libUSB 1.0
Exercice :			Building libUSB
Exercice :			Writing a user-mode USB driver using libUSB
USB gadget drivers
	Basic USB gadgets.
	Composite USB gaddget drivers.
Exercice :			Writing a gadget driver and the corresponding host driver on the Linux workstation.

	The USB On-The-Go (OTG) specification.
		OTG support in Linux

Duration	Cost	Calendar
3 days	1950 €
This course can be provided either in our Paris training center or, worldwide, on your premises.