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Device Configuration
6-5 DEVICE CONFIGURATION
6
The USB device characteristics must be shared with the USB device stack through
configuration parameters. All of these parameters are provided through two global
structures of type USBD_DRV_CFG and USBD_DEV_CFG . These structures are declared in the
file usbd_dev_cfg.h , and defined in the file usbd_dev_cfg.c (refer to section 2-4-2
“Copying and Modifying Template Files” on page 33 for an example of initialization of these
structures). These files are distributed as templates, and you should modify them to have the
proper configuration for your USB device controller. The fields of the following structure
are the parameters needed to configure the USB device controller driver:
typedef const struct usb_drv_cfg {
CPU_ADDR BaseAddr;
CPU_ADDR, MemAddr;
CPU_ADDR, MemSize;
USBD_DEV_SPD, Spd;
USBD_DRV_EP_INFO *EP_InfoTbl;
(1)
(2)
(3)
(4)
(5)
} USBD_DRV_CFG;
Listing 6-3 USB Device Controller Driver Configuration Structure
L6-3(1)
Base address of the USB device controller hardware registers.
L6-3(2)
Base address of the USB device controller dedicated memory.
L6-3(3)
Size of the USB device controller dedicated memory.
L6-3(4)
Speed of the USB device controller. Can be set to either USBD_DEV_SPD_LOW ,
USBD_DEV_SPD_FULL or USBD_DEV_SPD_HIGH .
L6-3(5)
USB device controller endpoint information table (see section 6-5-1 “Endpoint
Information Table” on page 86).
The fields of the following structure are the parameters needed to configure the USB device:
85
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