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Chapter 6
6
typedef
const struct
usb_dev_cfg {
CPU_INT16U
CPU_INT16U
CPU_INT16U
VendorID;
ProductID;
DeviceBCD;
(1)
(2)
(3)
const
const
const
CPU_CHAR
CPU_CHAR
CPU_CHAR
CPU_INT16U
*ManufacturerStrPtr;
*ProductStrPtr;
*SerialNbrStrPtr;
LangID;
(4)
(5)
(6)
(7)
} USBD_DEV_CFG;
Listing 6-4 USB Device Configuration Structure
L6-4(1)
Vendor ID.
L6-4(2)
Product ID.
L6-4(3)
Device release number.
L6-4(4)
Pointer to manufacturer string.
L6-4(5)
Pointer to product string.
L6-4(6)
Pointer to serial number ID.
L6-4(7)
Language ID.
6-5-1 ENDPOINT INFORMATION TABLE
The endpoint information table provides the hardware endpoint characteristics to the USB
device stack. When an endpoint is opened, the USB device stack’s core iterates through the
endpoint information table entries until the endpoint type and direction match the
requested endpoint characteristics. The matching entry provides the physical endpoint
number and maximum packet size information to the USB device stack. The entries on the
endpoint information table are organized as follows:
86
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