Sử dụng chuột tuân thủ HID như thiết bị trong Ubuntu

Mục tiêu: Tôi có một bảng trắng mô phỏng như chuột. Vì vậy, khi bạn nhấp và kéo trên bảng trắng, nó sẽ di chuyển con trỏ. Tôi muốn làm cho một bảng trắng hoạt động trong Ubuntu Nó hoạt động trên windows. Thông tin thiết bị: đầu ra cat /proc/bus/inputchứa thông tin thiết bị

I: Bus=0003 Vendor=4623 Product=011a Version=0111
N: Name="Hite Board-XXXXXXXX"
P: Phys=usb-0000:00:14.0-1/input0
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/
U: Uniq=
H: Handlers=mouse2 event13
B: PROP=2
B: EV=b
B: KEY=400 0 0 0 0 0
B: ABS=260800000000003

abhishek@vaio:~$ lsusb -d 4623:011a -v
Bus 001 Device 012: ID 4623:011a  

Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x4623 
  idProduct          0x011a 
  bcdDevice            0.01
  iManufacturer           1 
  iProduct                2 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           73                                                                                             
    bNumInterfaces          2                                                                                             
    bConfigurationValue     1                                                                                             
    iConfiguration          0                                                                                             
    bmAttributes         0x80                                                                                             
      (Bus Powered)                                                                                                       
    MaxPower              150mA                                                                                           
    Interface Descriptor:                                                                                                 
      bLength                 9                                                                                           
      bDescriptorType         4                                                                                           
      bInterfaceNumber        0                                                                                           
      bAlternateSetting       0                                                                                           
      bNumEndpoints           2                                                                                           
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 No Subclass
      bInterfaceProtocol      0 None
      iInterface              0 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.11
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength     429
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               8
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 No Subclass
      bInterfaceProtocol      0 None
      iInterface              6 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.10
          bCountryCode           33 US
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      91
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1

Vì bInterfaceProtocollà Không, linux không nhận ra nó là một thiết bị nhập chuột.

Cách tiếp cận lý tưởng để đảo ngược kỹ thuật từ cửa sổ để làm cho nó hoạt động trong linux.

Thiết bị trong trình quản lý thiết bị windows:

Chỉnh sửa 1:

abhishek@vaio:~/dev_work/whiteboard/pyusbwhiteboard$ usb-devices | grep -A5 'Vendor=4623 ProdID=011a' | grep Driver
I:  If#= 0 Alt= 0 #EPs= 2 Cls=03(HID  ) Sub=00 Prot=00 Driver=usbfs
I:  If#= 1 Alt= 0 #EPs= 2 Cls=03(HID  ) Sub=00 Prot=00 Driver=usbhid

đầu ra dmesg: http://codepad.org/fFtwryw6

Tôi đã viết kịch bản có thể thực hiện công việc. Nhưng tôi phải tìm ra ý nghĩa của đầu vào từ thiết bị.

import sys,pdb
import usb.core
import usb.util
from pymouse import PyMouse

# whiteboard coordinates axis computed by checking the output against strokes
white_board_x_min=(1<<8)+1
white_board_x_max=(127<<8)+255
white_board_y_min=(1<<8)+1
white_board_y_max=(127<<8)+255

white_board_x_diff=white_board_x_max-white_board_x_min
white_board_y_diff=white_board_y_max-white_board_y_min

# mouse handler
m = PyMouse()
x_screen, y_screen = m.screen_size()

# decimal vendor and product values
dev = usb.core.find(idVendor=17955, idProduct=282)

# first endpoint
interface = 0
endpoint = dev[0][(0,0)][0]
# if the OS kernel already claimed the device, which is most likely true
# thanks to http://stackoverflow.com/questions/8218683/pyusb-cannot-set-configuration
if dev.is_kernel_driver_active(interface) is True:
    # tell the kernel to detach
    dev.detach_kernel_driver(interface)
    # claim the device
    usb.util.claim_interface(dev, interface)
mouse_down_event=False
try:    
    while True :
        try:
            data = dev.read(endpoint.bEndpointAddress,endpoint.wMaxPacketSize)
            # click value
            click=data[1] # if it is 7 mouse down else if it is 4 it is mouse up 
            # get the coordinates
            xcor,ycor,dec_x_binary,dec_y_binary=data[4],data[6],data[3],data[5]
            # convert to decimal
            xcor_dec=(xcor<<8)+dec_x_binary
            ycor_dec=(ycor<<8)+dec_y_binary
            # convert to relative screen coordinates
            screen_xcor=int(round((float(xcor_dec-white_board_x_min)/float(white_board_x_diff)) * x_screen))
            screen_ycor=int(round((float(ycor_dec-white_board_y_min)/float(white_board_y_diff)) * y_screen))
            #print "%d, %d"%(xcor_dec,ycor_dec)
            #print "%d, %d"%(screen_xcor,screen_ycor)
            # check if it is valid event
            if xcor_dec!=0 and ycor_dec!=0:
                # move mouse    
                if click==7:
                    # mean mouse down event
                    if mouse_down_event:
                        # drag event
                        # draw a line from previous coordinates
                        m.drag(screen_xcor, screen_ycor)
                    else:
                        # first button press event
                        m.click(screen_xcor, screen_ycor, 1)
                    mouse_down_event=True
                else:
                    # mouse up event
                    # set event type in mouse_down_event
                    # first button press and drag
                    mouse_down_event=False
        except usb.core.USBError as e:
            data = None
            if e.args == ('Operation timed out',):
                continue  
finally:
    # release the device
    usb.util.release_interface(dev, interface)
    # reattach the device to the OS kernel
    dev.attach_kernel_driver(interface)

https://github.com/abhigenie92/pyusbwhiteboard