STM32 USB 复合设备开发的技巧
利用 IDA 描述符 将两个USB设备 做成复合设备
usb_desc.c 文件
/* USB Standard Device Descriptor */
const uint8_t Composite_DeviceDescriptor[Composite_SIZ_DEVICE_DESC] = {
0x12, //bLength
USB_DEVICE_DESCRIPTOR_TYPE, //bDescriptorType
0x00, //bcdUSB
0x02,
0x00, //bDeviceClass
0x00, //bDeviceSubClass
0x00, //bDeviceProtocol
0x40, //bMaxPacketSize40
0x83, //idVendor (0x0483)
0x04,
0x40, //idProduct = 0x5750
0x57,
0x00, //bcdDevice rel. 2.00
0x02,
1, //Index of string descriptor describing manufacturer
2, //Index of string descriptor describing product
3, //Index of string descriptor describing the device serial number
0x01 //bNumConfigurations
}
;
const uint8_t Composite_ConfigDescriptor[Composite_SIZ_CONFIG_DESC] = {
0x09, /* bLength: Configuration Descriptor size */
USB_CONFIGURATION_DESCRIPTOR_TYPE, /* bDescriptorType: Configuration */
Composite_SIZ_CONFIG_DESC,
0x00,
0x03, /* bNumInterfaces: 2 interfaces, 1 for keyboard, 2 for virtual COM port */
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 */
/*********************************IAD Descriptor*********************************/
0x08, //描述符大小
0x0B, //IAD描述符类型
0x00, //bFirstInterface
0x01, //bInferfaceCount
0x03, //bFunctionClass:HID
0x00, //bFunctionSubClass
0x00, //bFunctionProtocol
/*16*/
0x05, //iFunction
/************** Descriptor of Keyboard HID interface ****************/
/* 09 */
0x09, /* bLength: Interface Descriptor size */
USB_INTERFACE_DESCRIPTOR_TYPE,/* bDescriptorType: Interface descriptor type */
0x00, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x02, /* 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 Keyboard HID HID ********************/
/* 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 */
KEYBOARD_SIZ_REPORT_DESC,/* wItemLength: Total length of Report descriptor */
0x00,
/******************** Descriptor of Keyboard HID endpoints ******************/
/* 27 */
0x07, /* bLength: Endpoint Descriptor size */
USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: */
0x81, /* bEndpointAddress: Endpoint Address (IN) */
0x03, /* bmAttributes: Interrupt endpoint */
0x08, /* wMaxPacketSize: 8 Bytes max */
0x00,
0x20, /* bInterval: Polling Interval (32 ms) */
/* 34 */
0x07, /* bLength: Endpoint Descriptor size */
USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: */
/* Endpoint descriptor type */
0x01, /* bEndpointAddress: */
/* Endpoint Address (OUT) */
0x03, /* bmAttributes: Interrupt endpoint */
0x08, /* wMaxPacketSize: 8 Bytes max */
0x00,
0x20, /* bInterval: Polling Interval (20 ms) */
/* 41 */
/*********************************IAD Descriptor*********************************/
0x08, /*描述符大小*/
0x0B, /*IAD描述符类型*/
0x01, /*bFirstInterface*/
0x02, /*bInterfaceCOunt*/
0x02, /*bFunctionClass:CDC Class*/
0x02, /*bFunctionSubClass*/
0x01, /*bFunctionProtocol*/
/*56*/
0x04, /*iFunction*/
/******************** Descriptor of virtual COM interface ********************/
/* 41 */
0x09, /* bLength: Interface Descriptor size */
USB_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType: */
/* Interface descriptor type */
0x01, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x01, /* bNumEndpoints*/
0x02, /* bInterfaceClass: Communication Interface Class */
0x02, /* bInterfaceSubClass : Abstract Control Model*/
0x01, /* nInterfaceProtocol : Common AT commands*/
0x00, /* iInterface: Index of string descripto*/
/*Header Functional Descriptor*/
/* 50 */
0x05, /* bLength: Endpoint Descriptor size */
0x24, /* bDescriptorType: CS_INTERFACE */
0x00, /* bDescriptorSubtype: Header Func Desc */
0x10, /* bcdCDC: spec release number */
0x01,
/*Call Management Functional Descriptor*/
/* 55 */
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x01, /* bDescriptorSubtype: Call Management Func Desc */
0x00, /* bmCapabilities: D0+D1 */
0x02, /* bDataInterface: 2 */
/*ACM Functional Descriptor*/
/* 60 */
0x04, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x02, /* bDescriptorSubtype: Abstract Control Management desc */
0x02, /* bmCapabilities */
/*Union Functional Descriptor*/
/* 64 */
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x06, /* bDescriptorSubtype: Union func desc */
0x01, /* bMasterInterface: Communication class interface */
0x02, /* bSlaveInterface0: Data Class Interface */
/*Endpoint 2 Descriptor*/
/* 69 */
0x07, /* bLength: Endpoint Descriptor size */
USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: Endpoint */
0x82, /* bEndpointAddress: (IN2) */
0x03, /* bmAttributes: Interrupt */
VIRTUAL_COM_PORT_INT_SIZE, /* wMaxPacketSize: */
0x00,
0xFF, /* bInterval: */
/*Data class interface descriptor*/
/* 76 */
0x09, /* bLength: Endpoint Descriptor size */
USB_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType: */
0x02, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x02, /* bNumEndpoints: Two endpoints used */
0x0A, /* bInterfaceClass: CDC */
0x00, /* bInterfaceSubClass: */
0x00, /* bInterfaceProtocol: */
0x00, /* iInterface: */
/*Endpoint 3 Descriptor*/
/* 85 */
0x07, /* bLength: Endpoint Descriptor size */
USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: Endpoint */
0x03, /* bEndpointAddress: (OUT3) */
0x02, /* bmAttributes: Bulk */
VIRTUAL_COM_PORT_DATA_SIZE, /* wMaxPacketSize: */
0x00,
0x00, /* bInterval: ignore for Bulk transfer */
/*Endpoint 4 Descriptor*/
/* 92 */
0x07, /* bLength: Endpoint Descriptor size */
USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: Endpoint */
0x84, /* bEndpointAddress: (IN4) */
0x02, /* bmAttributes: Bulk */
VIRTUAL_COM_PORT_DATA_SIZE, /* wMaxPacketSize: */
0x00,
0x00 /* bInterval */
/* 99 */
}; /* Composite_ConfigDescriptor */
/* 66 */
const uint8_t KeyBoard_ReportDescriptor[KEYBOARD_SIZ_REPORT_DESC] = {
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 // END_COLLECTION
}; /* KeyBoard_ReportDescriptor */
/* USB String Descriptors (optional) */
const uint8_t Composite_StringLangID[Composite_SIZ_STRING_LANGID] = {
Composite_SIZ_STRING_LANGID,
USB_STRING_DESCRIPTOR_TYPE,
0x09,
0x04
}
; /* LangID = 0x0409: U.S. English */
const uint8_t Composite_StringVendor[Composite_SIZ_STRING_VENDOR] = {
Composite_SIZ_STRING_VENDOR, /* Size of Vendor string */
USB_STRING_DESCRIPTOR_TYPE, /* bDescriptorType*/
/* Manufacturer: "STMicroelectronics" */
'S', 0, 'T', 0, 'M', 0, 'i', 0, 'c', 0, 'r', 0, 'o', 0, 'e', 0,
'l', 0, 'e', 0, 'c', 0, 't', 0, 'r', 0, 'o', 0, 'n', 0, 'i', 0,
'c', 0, 's', 0
};
const uint8_t Composite_StringProduct[Composite_SIZ_STRING_PRODUCT] = {
Composite_SIZ_STRING_PRODUCT, /* bLength */
USB_STRING_DESCRIPTOR_TYPE, /* bDescriptorType */
'S', 0, 'T', 0, 'M', 0, '3', 0, '2', 0, ' ', 0, 'C', 0,
'o', 0, 'm', 0, 'p', 0, 'o', 0, 's', 0, 'i', 0, 't', 0,
'e', 0, ' ', 0, 'M', 0, 'S', 0, 'C', 0, '+', 0, 'H', 0, 'I', 0, 'D', 0
};
uint8_t Composite_StringSerial[Composite_SIZ_STRING_SERIAL] = {
Composite_SIZ_STRING_SERIAL, /* bLength */
USB_STRING_DESCRIPTOR_TYPE, /* bDescriptorType */
'S', 0, 'T', 0, 'M', 0, '3', 0, '2', 0
};
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/QQ 727341554 TEL 13810175694