/* USB Configuration Descriptor */
/* All Descriptors (Configuration, Interface, Endpoint, Class, Vendor */
const u8 Joystick_ConfigDescriptor[JOYSTICK_SIZ_CONFIG_DESC] =
{
//以下为配置描述符
0x09, /* bLength: Configuation Descriptor size */
USB_CONFIGURATION_DESCRIPTOR_TYPE, /* bDescriptorType: Configuration */ JOYSTICK_SIZ_CONFIG_DESC,
/* wTotalLength: Bytes returned */
0x00,
0x01, /*bNumInterfaces: 1 interface*/
0x01, /*bConfigurationValue: Configuration value*/
0x00, /*iConfiguration: Index of string descriptor describing
the configuration*/
0xC0, /*bmAttributes: self powered */
0x32, /*MaxPower 100 mA: this current is used for detecting Vbus*/ //以下为接口描述符
/************** Descriptor of Joystick Mouse interface ****************/ /* 09 */
0x09, /*bLength: Interface Descriptor size*/
USB_INTERFACE_DESCRIPTOR_TYPE,/*bDescriptorType:
type*/
0x00, /*bInterfaceNumber: Number of Interface*/ Interface descriptor
如何修改stm32的USB例程为自己所用
0x00, /*bAlternateSetting: Alternate setting*/
0x02, /*bNumEndpoints*/
0x03, /*bInterfaceClass: HID*/
0x01, /*bInterfaceSubClass : 1=BOOT, 0=no boot*/
0x01, /*bInterfaceProtocol : 0=none, 1=keyboard, 2=mouse*/
0, /*iInterface: Index of string descriptor*/
//以下为HID描述符
/********************
********************/
/* 18 */
0x09, /*bLength: HID Descriptor size*/
HID_DESCRIPTOR_TYPE, /*bDescriptorType: HID*/
0x00, /*bcdHID: HID Class Spec release number*/
0x01,
0x00, /*bCountryCode: Hardware target country*/
0x01, /*bNumDescriptors: Number of HID class descriptors to follow*/ 0x22, /*bDescriptorType*/
JOYSTICK_SIZ_REPORT_DESC,/*wItemLength: Total length of Report descriptor*/ 0x00,
//以下为输入端点1描述符
/********************
********************/
/* 27 */
0x07, /*bLength: Endpoint Descriptor size*/
USB_ENDPOINT_DESCRIPTOR_TYPE, /*bDescriptorType:*/
0x81, /*bEndpointAddress: Endpoint Address (IN)*/
0x03, /*bmAttributes: Interrupt endpoint*/
0x08, /*wMaxPacketSize: 8 Byte max */
0x00,
0x20, /*bInterval: Polling Interval (32 ms)*/
//以下为输出端但1描述符
/* 34 */
0x07, /*bLength: Endpoint Descriptor size*/
USB_ENDPOINT_DESCRIPTOR_TYPE, /*bDescriptorType:*/
0x01, /*bEndpointAddress: Endpoint Address (OUT)*/
0x03, /*bmAttributes: Interrupt endpoint*/
0x08, /*wMaxPacketSize: 8 Byte max */
0x00,
0x20, /*bInterval: Polling Interval (32 ms)*/
/* 41 */
}; Descriptor of Joystick Mouse endpoint Descriptor of Joystick Mouse HID
如何修改stm32的USB例程为自己所用
接下来，还需要修改报告描述符，报告描述符比较复杂，这里就不详述了，直接给出修改好的报告描述符如下：
const u8 Joystick_ReportDescriptor[JOYSTICK_SIZ_REPORT_DESC] =
{
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x06, // USAGE (Keyboard)
0xa1, 0x01, // COLLECTION (Application)
0x05, 0x07, // USAGE_PAGE (Keyboard/Keypad)
0x19, 0xe0, // USAGE_MINIMUM (Keyboard LeftControl)
0x29, 0xe7, // USAGE_MAXIMUM (Keyboard Right GUI)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x01, // LOGICAL_MAXIMUM (1)
0x95, 0x08, // REPORT_COUNT (8)
0x75, 0x01, // REPORT_SIZE (1)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x95, 0x01, // REPORT_COUNT (1)
0x75, 0x08, // REPORT_SIZE (8)
0x81, 0x03, // INPUT (Cnst,Var,Abs)
0x95, 0x06, // REPORT_COUNT (6)
0x75, 0x08, // REPORT_SIZE (8)
0x25, 0xFF, // LOGICAL_MAXIMUM (255)
0x19, 0x00, // USAGE_MINIMUM (Reserved (no event indicated))
0x29, 0x65, // USAGE_MAXIMUM (Keyboard Application)
0x81, 0x00, // INPUT (Data,Ary,Abs)
0x25, 0x01, // LOGICAL_MAXIMUM (1)
0x95, 0x05, // REPORT_COUNT (5)
0x75, 0x01, // REPORT_SIZE (1)
0x05, 0x08, // USAGE_PAGE (LEDs)
0x19, 0x01, // USAGE_MINIMUM (Num Lock)
0x29, 0x02, // USAGE_MAXIMUM (Caps Lock)
0x91, 0x02, // OUTPUT (Data,Var,Abs)
0x95, 0x01, // REPORT_COUNT (1)
0x75, 0x06, // REPORT_SIZE (6)
0x91, 0x03, // OUTPUT (Cnst,Var,Abs)
0xc0 // END_COLLECTION
};
该报告描述符说明输入报告为8字节，第一字节为特殊键，用位图表示，第二字节保留，第三至第八字节为普通按键。我们将原来的摇杆功能改成键盘上的4个方向键，中键选择键为回车键，另外KEY2和KEY3分别做大写字母锁定键和数字锁锁定键。输出报告为1字节，其中最低两位分别为Num Lock灯和Caps Lock灯。
Joystick_StringLangID描述符不用修改，Joystick_StringVendor、
Joystick_StringProduct分别为厂商字符串和设备字符串，不改也可以，但是显示出来就是原来的内容，最好还是自己修改下。这里使用的是Unicode编码，可以直接使用圈圈以前写小程
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