Universal Serial Bus(USB) is a standard designed in 1994 has now become a key component in today's electronic and electromechanical devices for interfacing external components and peripherals. USB provide fast (USB 3.0 support 625 MB/s) and efficient data transfer rates as compared to other methods and buses. Now a days, almost every module can be interfaced through USB. USB devices are hotplugable and can be attached to a machine on the fly without having the need to cold boot the machine. Also, USB can be used to charge and can power up devices like external hard disk ,mouse etc..
The physical components of the Universal Serial Bus consist of the circuits, connectors, and cables between a host and one or more devices. The host is a PC or other computer that contains a USB host controller and a root hub. These components work together to enable the operating system to communicate with the devices on the bus. The host controller formats data for transmitting on the bus and translates received data to a format that operating-system components can understand. The host controller also performs other functions related to managing communications on the bus. The root hub has one or more connectors for attaching devices. The root hub, in combination with the host controller, detects attached and removed devices, carries out requests from the host controller, and passes data between devices and the host controller. The devices are the peripherals and additional hubs that connect to the bus. A hub has one or more ports for connecting devices. Each device must contain circuits and code that know how to communicate with the host. The USB specification defines the cables and connectors that connect devices to hubs.
The USB standard is extremely usable and durable & it has massive popularity. Many mobile phones have a USB connection & USB Flash drives make the transfer of large amounts of data an extremely simple process. A subculture of USB gadgets has sprung up in recent years with weird & wacky devices like USB fridges, vacuums, toasters, slippers & back massagers all hitting the market to massive amounts of interest and varying degrees of success.
This course is designed to ensure that students of Engineering College with academic capabilities will have the skill set needed to deal with the challenges involved in real-world Embedded Technologies and Device Drivers Design to meet the needs of industries both today and in the future.
The course considers programming and device design techniques which can help to ensure that single-processor embedded systems are reliable.
The course is taught mainly using the C programming language, hardware design,Data Sheet Interpertation and a PC emulated as an embedded device.