emUSB-Device

emUSB-Device enables easy integration of USB functionality into an embedded system. Multiple standard classes are provided that allow embedded systems to behave as standard USB devices and communicate with any host like Windows, Linux and Mac systems. Examples are mass storage device, keyboard, mouse, printer, speaker, modem, RS232 serial adapter or network adapter. Additionally proprietary protocols may be implemented using the BULK class provided by emUSB-Device.

Multiple classes may be combined in any way to form a Composite Device with multiple interfaces that can be used simultaneously.

Key features

  • Cross platform works with Linux, Mac, Windows, and other hosts
  • Easy to use API and documentation
  • Compliant with USB v1.1, USB v2.0 and USB v3.0
  • Supports all speeds including Full (12Mb/s), High (480Mb/s) and SuperSpeed (5Gb/s).
  • Small memory footprint
  • Direct support from the USB product developers

Target emUSB-Device components

emUSB-Device Consists of Three Layers. These layers are a driver for hardware access, the emUSB-Device core, and at least one USB class driver or the bulk communication component. USB class drivers (MSD, CDC, HID, MTP, RNDIS, IP, MIDI), Bulk communication component and VirtualMSD component can be combined in any way to suit the requirements of any target USB-Device.

USB class drivers and hardware drivers are separate packages, which can be combined and ordered individually to suit the requirements of any project. SEGGER recommends to purchase emUSB-Device as a complete package by selecting the emUSB-Device PRO package. It includes support for the most common use cases, such as human interface devices for user interaction, file storage and transfer and serial communication support. The following table shows, which modules are part of the PRO package and which are optionally available.

emUSB Device Core
ComponentDescriptionemUSB-Device BASEemUSB-Device PRO
Ethernet communication
emUSB-Device IPCross platform IP over USB communication (contains emUSB-RNDIS and emUSB-ECM)OptionalOptional
emUSB-Device RNDISEthernet over USB communication using Remote NDIS protocolOptionalOptional
emUSB-Device ECMEthernet over USB communication using Communication Device Class
/ Ethernet Control Model protocol (CDC-ECM)
OptionalOptional
emUSB-Device NCMEthernet over USB communication using Communication Device Class / Network Control Model protocol (CDC-NCM)OptionalOptional
Mass storage
emUSB-Device VirtualMSDVirtual mass storage device (contains emUSB-MSD)OptionalIncluded
emUSB-Device MSDMass Storage Device classOptionalIncluded
emUSB-Device MTPMass storage using Media Transfer Protocol (MTP)OptionalIncluded
Serial communication
emUSB-Device CDCSerial communication over USB using Communication Device Class /
Abstract Control Model protocol (CDC-ACM), typically RS-232 emulation
OptionalIncluded
emUSB-Device HIDHuman Interface Device Class (HID) component (e.g. Mouse and Keyboard)IncludedIncluded
emUSB-Device PrinterPrinter protocol classOptionalIncluded
Multi media
emUSB-Device AudioEasily handle audio data.OptionalOptional
emUSB-Device VideoUSB Video Class implementation.OptionalOptional
emUSB-Device MIDIMusical Instrument Digital Interface class.OptionalOptional
Other
emUSB-Device BulkEasy and fast USB communication without any protocol overheadOptionalIncluded
emUSB-Device DFUUSB Device Firmware Upgrade class implementationOptionalOptional
emUSB-Device CCIDUSB Chip Card Interface Device classOptionalIncluded
Core layer
emUSB-Device CoreThe emUSB-Device core is the intrinsic USB stack.IncludedIncluded
Hardware layer
DriverUSB controller driver.OptionalOne Item Included

VirtualMSD

USB Device

Cross Platform, driverless file transfer, virtual file system

The Mass Storage Device class (MSD) is used to get access to external storage media such as USB-sticks, external hard disk drives and memory card readers.

Application samples for emUSB-Device VirtualMSD

Smart Watch
JLink OB

Smart Watch

J-Link OB


CDC-NCM

Ethernet USB

Ethernet via USB

emUSB-Device CDC-NCM enables a USB device to act as a virtual network adapter. This can be used to run TCP/IP-based applications over USB.

Application samples for emUSB-Device CDC-NCM

USB Ethernet Adapter
Router

USB to Ethernet Adapter

Router/Gateway


IP-over-USB

Ethernet USB

Cross platform, driverless Ethernet via USB

Easily run any IP-based protocol over USB. Simple and driverless! Plug-and-play on any operating system. Use a web browser to look into and configure the USB device.

Application samples for emUSB-Device IP-over-USB

Printer
Headphones

Printer

Headphone


CCID

CCID

CCID Class

SEGGER’s emUSB-Device Chip Card Interface Device (CCID) Class allows to create any CCID compatible USB device, including smart card readers (either contact based or contactless) or authentication tokens (Dongles).

Applications samples for emUSB-Device CCID

Card Reader
NFC Card Reader
RFID Card Reader

Card reader

NFC card reader

RFID card reader


MIDI

MIDI

Musical Instruments Digital Interface

The USB calss protocol for MIDI is used to interact with music devices and studio equipment, such as MIDI controllers, sequencers, drum machines, samplers, effects units, synthesizers, instruments, lighting and recording equipment.

Application samples for emUSB-Device MIDI

Synthesizer
Controller
Effects Unit

Synthesizer

Controller

Effects Units


DFU

DFU

Device Firmware Upgrade

Easily upgrade the firmware of your devices via a standard USB protocol.

Application samples for emUSB-Device DFU

Fax
Camera
Router
Smart Watch

Fax

Camera

Router/Gateway

Smart Watch

Printer

Printer


CDC-ECM

Ethernet USB

Ethernet via USB

emUSB-Device CDC-ECM enables a USB device to act as a virtual network adapter. This can be used to run TCP/IP-based applications over USB.

Application samples for emUSB-Device CDC-ECM

USB Ethernet Adapter
Router

USB to Ethernet Adapter

Router/Gateway


RNDIS

Ethernet USB

Ethernet via USB

emUSB-Device RNDIS enables a USB device to act as a virtual network adapter. This can be used to run any TCP/IP-based applications over USB. The most noteworthy application is a USB based webserver.

Application samples for emUSB-Device RNDIS

USB Ethernet Adapter
Router

USB to Ethernet Adapter

Router/Gateway


Video

Video

USB Video Device class

UVC 1.1 support. Transmit video data to any host. Expand your embedded device with video capabilities.

Application samples for emUSB-Device Video

Camera
Webcam

Camera

Webcam


Audio

Audio

USB Audio Device Class

Easily transmit audio via USB. Record or reply audio received from the host, send recorded audio to the host.

Simple and driverless! Plug-and-play on any operating system.

Application samples for emUSB-Device Audio

Conference Speakerphone
Headset
USB Sound Card

Conference speakerphone

Headset

USB Sound Card


Printer

Printer Class

Printer class

The USB class protocol for printers is used for the handling of output devices, like printers and plotters.

Application samples for emUSB-Device Printer Class

Printer

Printer


HID

HID

Human Interface Device Class

The Human Interface Device class (HID) is an abstract USB class protocol defined by the USB Implementers Forum.

Application samples for emUSB-Device HID

Keyboard Mouse
Barcode Scanner
Touch Screen
Joystick

Keyboard & Mouse

Barcode Scanner

Touch Screen

Joystick

Fingerprint Sensor
RFID Reader
3D Mouse
Trackball

Fingerprint Sensor

RFID Reader

3D Mouse

Trackball

Uninterruptible Power Supply
Weighing Scale

Uninterruptible Power Supply

Weighing Scale


CDC

CDC

Communication Device Class

The USB Communications Device Class (CDC) allows to convert the USB devices into a serial communication device.

Application samples for emUSB-Device CDC

Modem
Fax
Measurement Device
POS Terminal

Modem

Fax

Measurement Device

POS-Terminal


MTP

MTP

Media Transfer Protocol

The Media Transfer Protocol (MTP) is a USB class protocol which can be used to transfer files to and from storage devices. MTP is an official extension of the Picture Transfer Protocol (PTP) designed to allow digital cameras to exchange image files with a computer. MTP extends this by adding support for all types of files.

Application samples for emUSB-Device MTP

Smartphone
Camera
MP3 Player

Smartphone

Camera

Mp3 player


MSD

USB Device

Mass Storage Device Class

emUSB-Device MSD enables the use of an embedded target device as a USB mass storage device. The target device can be simply plugged-in and used like an ordinary disk drive, without the need to develop a driver for the host operating system.

Application samples for emUSB-Device MSD

Memory Stick
Camera
MP3 Player
DVD Player

Memory Stick

Camera

MP3 Player

DVD Player


Bulk

Bulk

Bulk component

The emUSB-Device Bulk component allows developers to quickly and painlessly develop software for an embedded device that communicates with a PC via USB.

Application samples for emUSB-Device Bulk

JLink Probe
Temperature Logger
Software Protection

SEGGER Debug Probe J-Link

Temperature Logger

Software Protection Dongle


emUSB-Device drivers

SEGGER provide support for an extensive range of MCUs with on-chip USB controllers. The driver interface has been designed in such a way that it should be possible to use the most common USB device controllers and easily add drivers for USB controllers that are not yet supported.

Licensing

emUSB-Device is available under various Embedded Software License models and delivered in source code packages. With a wide range of licensing options, emUSB-Devic can fulfill commercial requirements as well as technical requirements. All licenses are one-time payments. emUSB-Devic is royalty-free and not subscription-based. This makes the software a part of the equipment expenses, keeping the costs static.

* Applies to second seat/product and all additional seats/products of the Single Product License and Single Developer License.