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Chapter 12
L12-1(3)
Create a new Vendor class instance. In this example, DEF_FALSE indicates that
no interrupt endpoints are used. Hence, the polling interval is set to 0. The
callback App_USBD_Vendor_VendorReq() is passed to the function.
L12-1(4)
Check if the high-speed configuration is active and proceed to add the Vendor
instance previously created to this configuration.
L12-1(5)
Check if the full-speed configuration is active and proceed to add the Vendor
12
instance to this configuration.
Code Listing 12-1 also illustrates an example of multiple configurations. The functions
USBD_Vendor_Add()
and
USBD_Vendor_CfgAdd()
allow you to create multiple
configurations and multiples instances architecture. Refer to section 7-1 “Class Instance
Concept” on page 99 for more details about multiple class instances.
12-2-3 CLASS INSTANCE COMMUNICATION
The Vendor class offers the following functions to communicate with the host. For more
details about the functions parameters, refer to section G-1 “Vendor Class Functions” on
page 474.
Function name
USBD_Vendor_Rd()
USBD_Vendor_Wr()
USBD_Vendor_RdAsync()
USBD_Vendor_WrAsync()
USBD_Vendor_IntrRd()
USBD_Vendor_IntrWr()
USBD_Vendor_IntrRdAsync()
USBD_Vendor_IntrWrAsync()
Operation
Receive data from host through bulk OUT endpoint. This function is blocking.
Send data to host through bulk IN endpoint. This function is blocking.
Receive data from host through bulk OUT endpoint. This function is
non-blocking.
Send data to host through bulk IN endpoint. This function is non-blocking.
Receive data from host through interrupt OUT endpoint. This function is
blocking.
Sends data to host through interrupt IN endpoint. This function is blocking.
Receives data from host through interrupt OUT endpoint. This function is
non-blocking.
Sends data to host through interrupt IN endpoint. This function is non-blocking.
Table 12-4 Vendor Communication API Summary
210
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