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http://microdesigner.ir/%D8%AF%D8%A7%D9%86%D9%84%D9%88%D8%AF-%DA%A9%D8%AA%D8%A7%D8%A8-%D8%B0%D8%AE%DB%8C%D8%B1%D9%87-%DA%A9%D9%86%D9%86%D8%AF%D9%87-%D9%87%D8%A7%DB%8C-usb-%DA%A9%D8%AA%D8%A7%D8%A8-%D8%AA%D8%B4%D8%B1%DB%8C/
امروز توی یکی از سایت ها دوتا کتاب دیدم که جالب بودن گفتم اینجا هم که تازه عضو شدم نشرش کنم
USB Mass Storage
Designing and Programming
Devices and Embedded Hosts
Interfaces, Protocols, and Technologies
Designing and programming a USB mass-storage device or embedded USB
host involves a variety of interfaces, protocols, and structures.
Every USB mass-storage device must support two interfaces:
• A USB device interface to enable the device to communicate with a PC
or other USB host.
• An interface between the device’s microcontroller or other CPU and the
storage media. Flash-memory cards typically use the Serial Peripheral
Interface (SPI), MultiMediaCard bus, SD-Card bus, or a bus derived
from the ATA interface or PC-Card bus. Hard drives typically use the
ATA parallel interface.
A USB mass-storage device must implement these protocols and structures:
• Generic USB protocol. Every USB device must respond to requests sent
by the USB host and other events on the bus.
• USB mass-storage protocol. Every USB mass-storage device must detect
and respond to requests that are specific to the USB mass-storage class.
• SCSI commands. USB hosts access mass-storage devices via commands
originally developed for devices that use the Small Computer Systems
Interface (SCSI).
• Media-specific protocol. The storage media’s controller typically supports
a command set for accessing the media’s contents. Many flash-memory
cards use the MultiMediaCard protocol or the SD Card protocol. Hard
drives use the ATA protocol.
Reading and writing data to a mass-storage device also involves understanding
logical structures in the media:
• Media structure. Program code accesses the storage area in drives as a
series of logical blocks, or sectors. Dedicated areas in the media store
information about the logical blocks and other logical structures in the
media.
• File system. If the device firmware reads or writes to files on its own,
rather than via a USB host, the device must implement a file system such
as FAT16 or FAT32.
This book shows how to put all of these interfaces, protocols, and structures
to work in a USB mass-storage device. The book assumes you have a basic
familiarity with microcontroller programming and interfacing. For more
about USB, I recommend my book, USB Complete: Everything You Need to
Develop Custom USB Peripherals.
About the Code
This book include code examples written for the Microchip PIC18F4550
microcontroller using Microchip’s MPLAB® C18 C compiler. On my website
(web site in book) you can find links to complete mass-storage firmware
for this chip and example mass-storage firmware for other microcontrollers.
فقط چون کپی برداری از سایت ناشر بدون لینک دادن ممنون بود من لینکش را گذاشتم تاخودتون از سایت دانلود کنید . Designing and Programming
Devices and Embedded Hosts
Interfaces, Protocols, and Technologies
Designing and programming a USB mass-storage device or embedded USB
host involves a variety of interfaces, protocols, and structures.
Every USB mass-storage device must support two interfaces:
• A USB device interface to enable the device to communicate with a PC
or other USB host.
• An interface between the device’s microcontroller or other CPU and the
storage media. Flash-memory cards typically use the Serial Peripheral
Interface (SPI), MultiMediaCard bus, SD-Card bus, or a bus derived
from the ATA interface or PC-Card bus. Hard drives typically use the
ATA parallel interface.
A USB mass-storage device must implement these protocols and structures:
• Generic USB protocol. Every USB device must respond to requests sent
by the USB host and other events on the bus.
• USB mass-storage protocol. Every USB mass-storage device must detect
and respond to requests that are specific to the USB mass-storage class.
• SCSI commands. USB hosts access mass-storage devices via commands
originally developed for devices that use the Small Computer Systems
Interface (SCSI).
• Media-specific protocol. The storage media’s controller typically supports
a command set for accessing the media’s contents. Many flash-memory
cards use the MultiMediaCard protocol or the SD Card protocol. Hard
drives use the ATA protocol.
Reading and writing data to a mass-storage device also involves understanding
logical structures in the media:
• Media structure. Program code accesses the storage area in drives as a
series of logical blocks, or sectors. Dedicated areas in the media store
information about the logical blocks and other logical structures in the
media.
• File system. If the device firmware reads or writes to files on its own,
rather than via a USB host, the device must implement a file system such
as FAT16 or FAT32.
This book shows how to put all of these interfaces, protocols, and structures
to work in a USB mass-storage device. The book assumes you have a basic
familiarity with microcontroller programming and interfacing. For more
about USB, I recommend my book, USB Complete: Everything You Need to
Develop Custom USB Peripherals.
About the Code
This book include code examples written for the Microchip PIC18F4550
microcontroller using Microchip’s MPLAB® C18 C compiler. On my website
(web site in book) you can find links to complete mass-storage firmware
for this chip and example mass-storage firmware for other microcontrollers.
دانلود کتاب ها :
http://microdesigner.ir/%D8%AF%D8%A7%D9%86%D9%84%D9%88%D8%AF-%DA%A9%D8%AA%D8%A7%D8%A8-%D8%B0%D8%AE%DB%8C%D8%B1%D9%87-%DA%A9%D9%86%D9%86%D8%AF%D9%87-%D9%87%D8%A7%DB%8C-usb-%DA%A9%D8%AA%D8%A7%D8%A8-%D8%AA%D8%B4%D8%B1%DB%8C/
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