emUSB-Host—The Leading USB host stack for Embedded Systems
- Professional USB-Host stack for embedded devices
- Direct support from the product developers
- Highly portable and uniform API for all supported controllers
- High performance, small memory footprint in RAM and ROM
- Simple to integrate into your embedded environment
emUSB-Host—Efficient USB host stack
SEGGER's emUSB-Host is a USB host stack specifically designed for embedded systems. It implements full USB host functionality, including external hub support and optionally provides device class drivers. It enables developers to easily add USB host functionality to embedded systems.
The emUSB-Host stack complies with the USB v1.1 and USB v2.0 specifications. It supports all transfer modes (control, bulk, interrupt, isochronous) at all speeds. USB pipe management and extended error recovery mechanisms required for reliable operation are implemented internally.
emUSB-Host's modular design enables applications to either access the USB host programming interface directly or to use APIs exposed by class drivers.
The USB stack can handle multiple devices as well as hubs simultaneously and fully supports hot plugging of devices and hubs. The programming interface supports dynamic embedded device enumeration and identification.
emUSB-Host Components
SEGGER's USB host stack designed to work on any embedded system with a USB host controller. Bulk communication along with all other transfer modes is supported. All commonly used standard device classes are supported. USB trees with multiple hubs are supported as well.
| Component | Description |
|---|---|
| USB protocol layer | |
| CDC | emUSB-Host Communication Device Class component |
| HID | emUSB-Host Human Interface Device Class component |
| MSD | emUSB-Host Mass Storage Device Class component. |
| Printer | emUSB-Host Printer component. |
| FT232 | emUSB-Host FTDI UART component. |
| MTP | emUSB-Host Media Transfer Protocol component. |
| Core layer | |
| emUSB Core | The emUSB-Host core is the intrinsic USB stack |
| Hardware layer | |
| Driver | USB controller driver |
Buyer's Guide
| Additional modules | emUSB-Host BASE | emUSB-Host PRO |
|---|---|---|
| emUSB-Host Stack |
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| emUSB-Host MSD component |
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| emUSB-Host HID component |
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| emUSB-Host Printer component |
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| emUSB-Host CDC component |
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| emUSB-Host FTDI UART component |
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| emUSB-Host MTP component |
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| emUSB-Host-Controller driver |
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Included
One item included
Optional
Supported Devices
emUSB-Host does not contain any hardware dependencies. These are encapsulated through a hardware abstraction layer, which consists of interface functions. All of these functions for a particular USB host controller are typically located in the USB host driver. More information about these functions can be found in the emUSB-Host manual.
Range of Supported USB Hardware
The interface has been designed in such a way that it should be possible to use the most common USB host controllers. This includes USB 1.1 controllers and USB 2.0 controllers.
The following device drivers are available for emUSB-Host
| Device | Driver | Part # |
|---|---|---|
| Atmel | ||
| AT32UC3A | AVR32 Driver | 9.40.04 |
| AT91SAM9260 | OHCI Driver | 9.40.00 |
| AT91SAM9261 | OHCI Driver | 9.40.00 |
| AT91SAM9263 | OHCI Driver | 9.40.00 |
| AT91SAM92G10 | OHCI Driver | 9.40.00 |
| AT91SAM92G20 | OHCI Driver | 9.40.00 |
| AT91SAM9G15 | OHCI Driver | 9.40.00 |
| AT91SAM9G45 | OHCI Driver | 9.40.00 |
| AT91SAM9XE | OHCI Driver | 9.40.00 |
| AT91SAM92G45/M10 | OHCI Driver | 9.40.00 |
| AT91SAMA5D2x | OHCI Driver | 9.40.00 |
| AT91SAMA5D2x | EHCI Driver | 9.40.03 |
| AT91SAMA5D3x | OHCI Driver | 9.40.00 |
| AT91SAMA5D3x | EHCI Driver | 9.40.03 |
| Infineon | ||
| XMC45xx | Synopsys DWC2 Full Speed Driver | 9.40.05 |
| NXP | ||
| Kinetis K20 | Kinetis Full Speed Driver1 | 9.40.07 |
| Kinetis K40 | Kinetis Full Speed Driver1 | 9.40.07 |
| Kinetis K60 | Kinetis Full Speed Driver1 | 9.40.07 |
| Kinetis K70 | Kinetis Full Speed Driver1 | 9.40.07 |
| Kinetis KL20 | Kinetis Full Speed Driver1 | 9.40.07 |
| Kinetis KW22 | Kinetis Full Speed Driver1 | 9.40.07 |
| LPC1754 | OHCI Driver | 9.40.00 |
| LPC1756 | OHCI Driver | 9.40.00 |
| LPC1758 | OHCI Driver | 9.40.00 |
| LPC1759 | OHCI Driver | 9.40.00 |
| LPC1765 | OHCI Driver | 9.40.00 |
| LPC1766 | OHCI Driver | 9.40.00 |
| LPC1768 | OHCI Driver | 9.40.00 |
| LPC1776 | OHCI Driver | 9.40.00 |
| LPC1777 | OHCI Driver | 9.40.00 |
| LPC1778 | OHCI Driver | 9.40.00 |
| LPC1785 | OHCI Driver | 9.40.00 |
| LPC1786 | OHCI Driver | 9.40.00 |
| LPC1787 | OHCI Driver | 9.40.00 |
| LPC1788 | OHCI Driver | 9.40.00 |
| LPC2387 | OHCI Driver | 9.40.00 |
| LPC2388 | OHCI Driver | 9.40.00 |
| LPC2420 | OHCI Driver | 9.40.00 |
| LPC2458 | OHCI Driver | 9.40.00 |
| LPC2460 | OHCI Driver | 9.40.00 |
| LPC2468 | OHCI Driver | 9.40.00 |
| LPC2470 | OHCI Driver | 9.40.00 |
| LPC2478 | OHCI Driver | 9.40.00 |
| LPC3180 | OHCI Driver | 9.40.00 |
| LPC3220 | OHCI Driver | 9.40.00 |
| LPC3230 | OHCI Driver | 9.40.00 |
| LPC3240 | OHCI Driver | 9.40.00 |
| LPC3250 | OHCI Driver | 9.40.00 |
| LPC4088 | OHCI Driver | 9.40.00 |
| LH7A400 | OHCI Driver | 9.40.00 |
| LH7A404 | OHCI Driver | 9.40.00 |
| LPC18xx (except LPC181x) | EHCI Driver | 9.40.07 |
| LPC18Sxx (except LPC181Sx) | EHCI Driver | 9.40.07 |
| LPC43xx (except LPC431x) | EHCI Driver | 9.40.07 |
| LPC43Sxx (except LPC431Sx) | EHCI Driver | 9.40.07 |
| Renesas | ||
| NECV850ES Jx(G/H)3-U | OHCI Driver | 9.40.00 |
| RX11x (RX113) | Renesas Driver | 9.40.02 |
| RX23x (RX231) | Renesas Driver | 9.40.02 |
| RX62x (RX621, RX62N) | Renesas Driver | 9.40.02 |
| RX63x (RX631, RX63N) | Renesas Driver | 9.40.02 |
| RX64x (RX64M) | Renesas Driver | 9.40.02 |
| RX65x (RX65M) | Renesas Driver | 9.40.02 |
| RX71x (RX71M) | Renesas Driver | 9.40.02 |
| RZ/A1x (RZ/A1H - R7S72100x RZ/A1M - R7S72101x RZ/A1L - R7S72102x) | Renesas Driver | 9.40.02 |
| Synergy (S3A3, S3A7, S5D5, S5D9, S7G2) | Renesas Driver | 9.40.02 |
| ST Microelectronics | ||
| STM32F105 | Synopsys DWC2 Full Speed Driver | 9.40.05 |
| STM32F107 | Synopsys DWC2 Full Speed Driver | 9.40.05 |
| STM32F205 | Synopsys DWC2 Full Speed Driver2 | 9.40.05 |
| STM32F205 | Synopsys DWC2 High Speed Driver2 | 9.40.06 |
| STM32F207 | Synopsys DWC2 Full Speed Driver2 | 9.40.05 |
| STM32F207 | Synopsys DWC2 High Speed Driver2 | 9.40.06 |
| STM32F215 | Synopsys DWC2 Full Speed Driver2 | 9.40.05 |
| STM32F215 | Synopsys DWC2 High Speed Driver2 | 9.40.06 |
| STM32F217 | Synopsys DWC2 Full Speed Driver2 | 9.40.05 |
| STM32F217 | Synopsys DWC2 High Speed Driver2 | 9.40.06 |
| STM32F401 | Synopsys DWC2 Full Speed Driver2 | 9.40.05 |
| STM32F405 | Synopsys DWC2 Full Speed Driver2 | 9.40.05 |
| STM32F405 | Synopsys DWC2 High Speed Driver2 | 9.40.06 |
| STM32F407 | Synopsys DWC2 Full Speed Driver2 | 9.40.05 |
| STM32F407 | Synopsys DWC2 High Speed Driver2 | 9.40.06 |
| STM32F415 | Synopsys DWC2 Full Speed Driver2 | 9.40.05 |
| STM32F415 | Synopsys DWC2 High Speed Driver2 | 9.40.06 |
| STM32F417 | Synopsys DWC2 Full Speed Driver2 | 9.40.05 |
| STM32F417 | Synopsys DWC2 High Speed Driver2 | 9.40.06 |
| STM32F427 | Synopsys DWC2 Full Speed Driver2 | 9.40.05 |
| STM32F427 | Synopsys DWC2 High Speed Driver2 | 9.40.06 |
| STM32F429 | Synopsys DWC2 Full Speed Driver2 | 9.40.05 |
| STM32F429 | Synopsys DWC2 High Speed Driver2 | 9.40.06 |
| STM32F437 | Synopsys DWC2 Full Speed Driver2 | 9.40.05 |
| STM32F437 | Synopsys DWC2 High Speed Driver2 | 9.40.06 |
| STM32F439 | Synopsys DWC2 Full Speed Driver2 | 9.40.05 |
| STM32F439 | Synopsys DWC2 High Speed Driver2 | 9.40.06 |
| STM32F7xx | Synopsys DWC2 Full Speed Driver2 | 9.40.05 |
| STM32F7xx | Synopsys DWC2 High Speed Driver2 | 9.40.06 |
| STM32H7xx | Synopsys DWC2 High Speed Driver | 9.40.06 |
1 Due to hardware limitation, only one transfer with one device can be queued at once.
2 Current limitation: If using the internal Full-Speed PHY of the STM32Fxxx controller Low-Speed devices connected via an external USB hub do not enumerate properly due to a hardware limitation.