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1.HID通信的实现
2.使用USB外设
3.使用HID设备
4.配置时钟
5.USB中断放低点
6.生成代码，替换配置描述符
/* USB HID device Configuration Descriptor */
__ALIGN_BEGIN static uint8_t USBD_HID_CfgDesc[USB_HID_CONFIG_DESC_SIZ] __ALIGN_END =
{
0x09, /* bLength: Configuration Descriptor size */
USB_DESC_TYPE_CONFIGURATION, /* bDescriptorType: Configuration */
USB_HID_CONFIG_DESC_SIZ,
/* wTotalLength: Bytes returned */
0x00,
0x01, /*bNumInterfaces: 1 interface*/
0x01, /*bConfigurationValue: Configuration value*/
0x00, /*iConfiguration: Index of string descriptor describing
the configuration*/
0xE0, /*bmAttributes: bus powered and Support Remote Wake-up */
0x32, /*MaxPower 100 mA: this current is used for detecting Vbus*/
/************** Descriptor of Joystick Mouse interface ****************/
/* 09 */
0x09, /*bLength: Interface Descriptor size*/
USB_DESC_TYPE_INTERFACE,/*bDescriptorType: Interface descriptor type*/
0x00, /*bInterfaceNumber: Number of Interface*/
0x00, /*bAlternateSetting: Alternate setting*/
0x01, /*bNumEndpoints*/
0x03, /*bInterfaceClass: HID*/
0x01, /*bInterfaceSubClass : 1=BOOT, 0=no boot*/
0x01, /*nInterfaceProtocol : 0=none, 1=keyboard, 2=mouse*/
0, /*iInterface: Index of string descriptor*/
/******************** Descriptor of Joystick Mouse HID ********************/
/* 18 */
0x09, /*bLength: HID Descriptor size*/
HID_DESCRIPTOR_TYPE, /*bDescriptorType: HID*/
0x11, /*bcdHID: HID Class Spec release number*/
0x01,
0x00, /*bCountryCode: Hardware target country*/
0x01, /*bNumDescriptors: Number of HID class descriptors to follow*/
0x22, /*bDescriptorType*/
HID_MOUSE_REPORT_DESC_SIZE,/*wItemLength: Total length of Report descriptor*/
0x00,
/******************** Descriptor of Mouse endpoint ********************/
/* 27 */
0x07, /*bLength: Endpoint Descriptor size*/
USB_DESC_TYPE_ENDPOINT, /*bDescriptorType:*/
HID_EPIN_ADDR, /*bEndpointAddress: Endpoint Address (IN)*/
0x03, /*bmAttributes: Interrupt endpoint*/
HID_EPIN_SIZE, /*wMaxPacketSize: 4 Byte max */
0x00,
HID_FS_BINTERVAL, /*bInterval: Polling Interval (10 ms)*/
/* 34 */
} ;
7.替换报告描述符
__ALIGN_BEGIN static uint8_t HID_MOUSE_ReportDesc[HID_MOUSE_REPORT_DESC_SIZE] __ALIGN_END =
{
0x05, 0x01,// USAGE_PAGE (Generic Desktop)
0x09, 0x06,// USAGE (Keyboard)
0xa1, 0x01,// COLLECTION (Application)
0x05, 0x07,// USAGE_PAGE (Keyboard)
0x19, 0xe0,// USAGE_MINIMUM (Keyboard LeftControl)
0x29, 0xe7,// USAGE_MAXIMUM (Keyboard Right GUI)
0x15, 0x00,// LOGICAL_MINIMUM (0)
0x25, 0x01,// LOGICAL_MAXIMUM (1)
0x75, 0x01,// REPORT_SIZE (1)
0x95, 0x08,// REPORT_COUNT (8)
0x81, 0x02,// INPUT (Data,Var,Abs)
0x95, 0x01,// REPORT_COUNT (1)
0x75, 0x08,// REPORT_SIZE (8)
0x81, 0x03,// INPUT (Cnst,Var,Abs)
0x95, 0x05,// REPORT_COUNT (5)
0x75, 0x01,// REPORT_SIZE (1)
0x05, 0x08,// USAGE_PAGE (LEDs)
0x19, 0x01,// USAGE_MINIMUM (Num Lock)
0x29, 0x05,// USAGE_MAXIMUM (Kana)
0x91, 0x02,// OUTPUT (Data,Var,Abs)
0x95, 0x01,// REPORT_COUNT (1)
0x75, 0x03,// REPORT_SIZE (3)
0x91, 0x03,// OUTPUT (Cnst,Var,Abs)
0x95, 0x06,// REPORT_COUNT (6)
0x75, 0x08,// REPORT_SIZE (8)
0x15, 0x00,// LOGICAL_MINIMUM (0)
0x25, 0xFF,// LOGICAL_MAXIMUM (255)
0x05, 0x07,// USAGE_PAGE (Keyboard)
0x19, 0x00,// USAGE_MINIMUM (Reserved (no event indicated))
0x29, 0x65,// USAGE_MAXIMUM (Keyboard Application)
0x81, 0x00,// INPUT (Data,Ary,Abs)
0xc0
}; 8.修改宏定义
#define HID_EPIN_ADDR 0x81
#define HID_EPIN_SIZE 0x08
#define USB_HID_CONFIG_DESC_SIZ 34
#define USB_HID_DESC_SIZ 9
#define HID_MOUSE_REPORT_DESC_SIZE 63
#define HID_DESCRIPTOR_TYPE 0x21
#define HID_REPORT_DESC 0x22
#define HID_HS_BINTERVAL 0x07
#define HID_FS_BINTERVAL 0x0A
#define HID_POLLING_INTERVAL 0x0A
#define HID_REQ_SET_PROTOCOL 0x0B
#define HID_REQ_GET_PROTOCOL 0x03
#define HID_REQ_SET_IDLE 0x0A
#define HID_REQ_GET_IDLE 0x02
#define HID_REQ_SET_REPORT 0x09
#define HID_REQ_GET_REPORT 0x019.通过函数发送键值，自己写(USBD_HID_SendReport)
