47 lines
1.2 KiB
ReStructuredText
47 lines
1.2 KiB
ReStructuredText
==============
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USB Device CDC
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==============
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USB Device CDC (Communication Device Class)is a part of the USB Device Stack library.
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It provides support for Abstract Control Model, which is one of the USB PSTN Device
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Models. The device uses both a Data Class interface and a Communication Class interface
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for it. For more detailed definition and description about this model, user can refer to
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the related chapter in <Universal Serial Bus Communications Class Subclass Specification
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for PSTN Devices, Revision 1.2>
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Features
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--------
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* Initialization/de-initialization.
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* Data transfer.
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* Callbacks management on:
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* Transmission done
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* Reception done
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* Setting a new Line coding
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* Line state changing
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Applications
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------------
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* Used as a vritual serial.
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Dependencies
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------------
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* USB Device Driver
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* USB Device Stack Core
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* USB Protocol CDC
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Limitations
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-----------
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* Only single instance can be supported, not applied for multiple case.
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* The INF and CAT file would be packed in atzip file. User can extract
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them from "./usb/class/cdc/device".
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* If user wants to combine CDC with other classes into one device, USB
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Device Stack Composite component should be added from the web page
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rather than USB Device Stack CDC ACM.
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