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| PrUSB/OTG is a protocol stack for the USB On-The-Go (OTG) standard supplemental USB 2.0 specification for embedded systems. The device can switch automatically between the USB host and device functions with PrUSB/OTG. PrUSB/OTG enables a system to transfer data with either a USB host machine, such as a PC, or a USB device such as a digital camera, portable music player, etc. |
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| A device with PrUSB/OTG automatically recognizes the connected cable and immediately starts operating as a USB host or device. In addition to data exchange with a typical USB host, this enables direct data exchange between USB equipment without using a USB host like a PC. PrUSB/OTG uses PrUSB/Host for the USB host function and PrUSB/Device for the USB device function, so it inherits the features and benefits of both PrUSB/Host and PrUSB/Device. |
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| USB2.0 compliant features |
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| PrUSB/OTG offers the following USB features compliant with the USB2.0 specification: |
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Detects insertion and removal of a USB cable |
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Manages USB standard requests for control transfers |
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Manages host-device data flow |
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| PrUSB/OTG supports the following transfer types: |
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Control transfer: Data transfer for the control endpoint between a host and a device |
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Bulk transfer: Transfer of a relatively large amount of data or non-cyclic data |
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Interrupt transfer: Cyclic transfer of a relatively small amount of data |
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| PrUSB/Host, PrUSB/Device, and OTG drivers can be implemented individually. You can choose to implement only the necessary functions to reduce memory usage. |
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| Various class drivers are available |
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PrUSB/OTG has a sample class driver for both host and device, a host HID class driver, and a Mass Storage Class driver for the device. For the host, an optional Mass Storage Class driver and a Communication Device Class driver are also available.
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| PrUSB/OTG is written in the C language and is not dependent on a particular CPU. Device drivers and OS dependent code are separated from PrUSB/OTG to ensure high portability to different platforms. |
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| Compatibility with T-Engine and T-Kernel |
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| PrUSB/OTG is compatible with T-Engine and T-Kernel. |
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| PrUSB/OTG is available in source code. |
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| Maintenance service and customization service |
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| The following maintenance service is offered for PrUSB/OTG: |
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Email response regarding the product |
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Minor version upgrade |
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| eSOL also offers customization service to tailor PrUSB/OTG to a different target, such as custom hardware. |
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| PrUSB/OTG architecture diagram |
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| PrUSB/OTG operates on the following device controllers: |
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OTG controller with TMS320DM320 |
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Please contact us if you prefer another controller.
PrUSB/OTG operates on the following environments: |
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OS: |
PrKERNELv4 (complies with µITRON4.0 specification) |
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Options and related products |
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| Optional product: class driver |
Mass Storage Class driver
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Other class drivers will be supported soon. |
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| Related products |
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USB host stack |
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USB device stack |
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SDK for PictBridge |
| *A printing device will be supported soon. |
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Click here for more information. |
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Click here for information on customization or contract development. |
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