MQP Packet-Master OPT-CDC (comms) Decoder

Class Analysis Options are continually added to the repertoire of Graphic USB. The following are now available:

• Human Interface Devices (HID)
• Hub Class
• Communications Class
• Printer Class
• Mass Storage Class
• Audio Class
• Video Class (V1.0, V1.1)
• Vendor Class

Registering an option allows Graphic USB to display Class transfers in a more readable form.

Example (Human Interface Device Class)

The screen shot above shows the analysis of a typical HID Report Descriptor.

The shot below shows the results of the built-in 'HID Report Descriptor' parser. Each report defined by the Report Descriptor is identified and displayed.

With the HID Class Analysis enabled, each HID report is identified, and the contents analysed.

Examining the analysis of existing devices is an excellent way to learn how a class works, and it has never been easier to reveal the building blocks, than with GraphicUSB.

Comms and CDC

• CDC Data
• Direct Line Control Model
  
• Abstract Control Model
  
• Telephone Control Model
  
• Multi-channel Control Model
  
• CAPI Control Model
  
• Ethernet Networking Control Model
  
• ATM Networking Control Model
  
• Class Descriptors
  
• Class Requests