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2
Chapter 2
usbd_cfg.h is a configuration file used to setup μC/USB-Device stack parameters such as
the maximum number of configurations, interfaces, or class-related parameters.
usbd_dev_cfg.c and usbd_dev_cfg.h are configuration files used to set device parameters
such as vendor ID, product ID, and device release number. They also serve to configure the
USB device controller driver parameters, such as base address, dedicated memory base
address and size, controller’s speed, and endpoint capabilities.
MODIFY DEVICE CONFIGURATION
Modify the device configuration file ( usbd_cfg.c ) as needed for your application. See
below for details.
USBD_DEV_CFG USBD_DevCfg_ Template = {
0xFFFE,
0x1234,
0x0100,
"OEM MANUFACTURER",
"OEM PRODUCT",
"1234567890ABCDEF",
USBD_LANG_ID_ENGLISH_US
(1)
(2)
(3)
(4)
};
Listing 2-1 Device Configuration Template
L2-1(1)
Give your device configuration a meaningful name by replacing the word
“ Template ”.
L2-1(2)
Assign the Vendor ID, Product ID and Device Release Number. For
development purposes you can use the default values, but once you decide to
release your product, you must contact USB-IF in order to get valid IDs. USB-IF
maintains all USB Vendor ID and Product ID numbers.
L2-1(3)
Specify human readable Vendor ID, Product ID, and Device Release Number
strings.
L2-1(4)
A USB device can store strings in multiple languages. Specify the language
used in your strings. The #defines for the other languages are defined in the file
usbd_core.h in the section “Language Identifiers”.
34
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