USB
USB
Contents
Литература
Официална документация: http://www.usb.org
http://www.usb.org/developers/docs/usb_20_040908.zip (виж глава 9)
Hyde,
J. (2001). USB Design by Example: A Prac6cal Guide to
Building
I/O Devices. Second Edi6on.
Хост контролер спецификация:
Направи си сам Интерактивен манипулатор (USB
HID device)
• Microchip
(h8p://www.microchip.com)
– pic18f4550
microcontroller, pickit2 programmer, C compiler and
MPLAB
IDE
– PICDEM
development board (no hardware programmer needed;
bootloader
enables flashing microcontroller firmware through USB)
Linux & USB
• Host
sobware on Linux
– h8p://libusb.wiki.sourceforge.net/
– h8p://libhid.alioth.debian.org/
• My
notes
– h8p://www.cprince.com/PubRes/Hardware/LinuxUSB/
• Linux
Device Driver book
– h8p://lwn.net/Kernel/LDD3/
(freely available)
– Chapter
13 is on USB
• Linux
device driver kit
– h8p://kernel.org/pub/linux/kernel/people/gregkh/ddk/
• usbmouse.c
& hid-‐core.c Linux device drivers
– h8p://www.cprince.com/courses/cs5631/lectures/USB
Съдържание
RS-‐232
serial communica6on
• Wiring,
power & hardware configura6on
• USB
organiza6on
– Devices
classes
– “Interrupts”
& Interrupts
• Configura6ons
& endpoints
• Transac6on
types
• Bus
data communica6on
– Packets,
frames, microframes
– Data
rates
• • • • Control
transfers
Interrupt
transfers
Hardware
development
Some
Linux host sobware
Предназначение
Проводници и захранване на USB
USB <= 2
- 4 проводника
- Два проводника за захранване +/- 5V
- Няма проводник за тактова честота
- Предаването е асинхронно
