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USBDev_API
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Figure 12-2 USBDev_API and WinUSB
12
For more about WinUSB architecture, refer to Microsoft’s MSDN online documentation at:
http://msdn.microsoft.com/en-us/library/ff540207(v=VS.85).aspx
12-3-1 DEVICE AND PIPE MANAGEMENT
USBDev_API offers the following functions to manage a device and its function’s pipes.
Function name
USBDev_GetNbrDev()
USBDev_Open()
USBDev_Close()
USBDev_BulkIn_Open()
USBDev_BulkOut_Open()
USBDev_IntIn_Open()
USBDev_IntOut_Open()
USBDev_PipeClose()
Operation
Gets number of devices belonging to a specified Globally Unique
IDentifier (GUID) and connected to the host. Refer to section 12-4-4
“GUID” on page 228 for more details about the GUID.
Opens a device.
Closes a device.
Opens a bulk IN pipe.
Opens a bulk OUT pipe.
Opens an interrupt IN pipe.
Opens an interrupt OUT pipe.
Closes a pipe.
Table 12-5 USBDev_API Device and Pipe Management API
215
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