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Configuration
Table 12-1 indicates the usage of the different endpoints:
Endpoint
Control IN
Control OUT
Bulk IN
Bulk OUT
Direction
Device-to-host
Host-to-device
Device-to-host
Host-to-device
Usage
Standard requests for enumeration and vendor-specific requests.
Raw data communication. Data can be structured according to a
proprietary protocol.
Interrupt IN
Interrupt OUT
Device-to-host
Host-to-device
Raw data communication or notification. Data can be structured
according to a proprietary protocol.
12
Table 12-1 Vendor Class Endpoints Usage
The device application can use bulk and interrupt endpoints to send or receive data to or
from the host. It can only use the default endpoint to decode vendor-specific requests sent
by the host. The standard requests are managed internally by the Core layer of
μC/USB-Device.
12-2 CONFIGURATION
12-2-1 GENERAL CONFIGURATION
Some constants are available to customize the class. These constants are located in the USB
device configuration file, usbd_cfg.h . Table 12-2 shows their description.
Constant
USBD_VENDOR_CFG_MAX_NBR_DEV
USBD_VENDOR_CFG_MAX_NBR_CFG
Description
Configures the maximum number of class instances. Unless you plan
on having multiple configurations or interfaces using different class
instances, this can be set to 1.
Configures the maximum number of configuration in which Vendor
class is used. Keep in mind that if you use a high-speed device, two
configurations will be built, one for full-speed and another for
high-speed.
Table 12-2 General Configuration Constants Summary
207
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