📄 frmmain.frm
字号:
VERSION 5.00
Begin VB.Form frmMain
Caption = "EZ-USB DevBd as Generic HID"
ClientHeight = 3045
ClientLeft = 4770
ClientTop = 4530
ClientWidth = 3975
FillStyle = 0 'Solid
LinkTopic = "Form1"
ScaleHeight = 3045
ScaleWidth = 3975
Begin VB.CommandButton cmdAcquire
Caption = "Acquire"
Height = 375
Left = 1200
TabIndex = 5
Top = 1080
Width = 1455
End
Begin VB.TextBox tbPID
Height = 285
Left = 2040
TabIndex = 4
Text = "PID"
Top = 480
Width = 615
End
Begin VB.TextBox tbVID
Height = 285
Left = 1200
TabIndex = 3
Text = "VID"
Top = 480
Width = 615
End
Begin VB.TextBox tb7SEG
BeginProperty Font
Name = "MS Sans Serif"
Size = 24
Charset = 0
Weight = 700
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 615
Left = 1800
TabIndex = 2
Top = 2400
Width = 495
End
Begin VB.CommandButton cmdDPBUT
Caption = "dp"
Height = 255
Left = 120
TabIndex = 1
Top = 2640
Width = 735
End
Begin VB.HScrollBar hsRate
Height = 255
Left = 120
Max = 30
Min = 1
TabIndex = 0
Top = 2040
Value = 1
Width = 3735
End
Begin VB.Timer tmrRWData
Left = 360
Top = 2280
End
Begin VB.Timer tmrDelay
Enabled = 0 'False
Left = 120
Top = 11400
End
Begin VB.Frame Frame1
Caption = "Acquire Device"
Height = 1815
Left = 1080
TabIndex = 6
Top = 120
Width = 1695
Begin VB.TextBox tbMsg
Height = 285
Left = 120
TabIndex = 13
Top = 1440
Width = 1455
End
Begin VB.Label Label1
Caption = "PID(hex)"
Height = 255
Left = 960
TabIndex = 8
Top = 720
Width = 615
End
Begin VB.Label VID
Caption = "VID(hex)"
Height = 255
Left = 120
TabIndex = 7
Top = 720
Width = 615
End
End
Begin VB.Label Label5
Caption = "f4"
BeginProperty Font
Name = "MS Sans Serif"
Size = 8.25
Charset = 0
Weight = 700
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 255
Left = 3600
TabIndex = 12
Top = 2760
Width = 160
End
Begin VB.Label Label4
Caption = "f3"
BeginProperty Font
Name = "MS Sans Serif"
Size = 8.25
Charset = 0
Weight = 700
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 255
Left = 3240
TabIndex = 11
Top = 2760
Width = 160
End
Begin VB.Label Label3
Caption = "f2"
BeginProperty Font
Name = "MS Sans Serif"
Size = 8.25
Charset = 0
Weight = 700
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 255
Left = 2880
TabIndex = 10
Top = 2760
Width = 160
End
Begin VB.Label Label2
Caption = "f1"
BeginProperty Font
Name = "MS Sans Serif"
Size = 8.25
Charset = 0
Weight = 700
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 255
Left = 2520
TabIndex = 9
Top = 2760
Width = 160
End
Begin VB.Shape but
BorderColor = &H00000000&
BorderWidth = 2
FillColor = &H0000FF00&
FillStyle = 0 'Solid
Height = 255
Index = 3
Left = 3600
Shape = 3 'Circle
Top = 2520
Width = 195
End
Begin VB.Shape but
BorderColor = &H00000000&
BorderWidth = 2
FillColor = &H0000FF00&
FillStyle = 0 'Solid
Height = 255
Index = 2
Left = 3240
Shape = 3 'Circle
Top = 2520
Width = 195
End
Begin VB.Shape but
BorderColor = &H00000000&
BorderWidth = 2
FillColor = &H0000FF00&
FillStyle = 0 'Solid
Height = 255
Index = 1
Left = 2880
Shape = 3 'Circle
Top = 2520
Width = 195
End
Begin VB.Shape but
BorderColor = &H00000000&
BorderWidth = 2
FillColor = &H0000FF00&
FillStyle = 0 'Solid
Height = 255
Index = 0
Left = 2520
Shape = 3 'Circle
Top = 2520
Width = 195
End
Begin VB.Shape shDP
BorderColor = &H00000000&
BorderWidth = 3
FillColor = &H000000FF&
FillStyle = 0 'Solid
Height = 255
Left = 1200
Shape = 3 'Circle
Top = 2640
Width = 255
End
End
Attribute VB_Name = "frmMain"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
'Project: VBhid.vbp
'
Dim Capabilities As HIDP_CAPS
Dim DataString As String
Dim DetailData As Long
Dim DetailDataBuffer() As Byte
Dim DeviceAttributes As HIDD_ATTRIBUTES
Dim DevicePathName As String
Dim DeviceInfoSet As Long
Dim ErrorString As String
Dim HidDevice As Long
Dim LastDevice As Boolean
Dim MyDeviceDetected As Boolean
Dim MyDeviceInfoData As SP_DEVINFO_DATA
Dim MyDeviceInterfaceDetailData As SP_DEVICE_INTERFACE_DETAIL_DATA
Dim MyDeviceInterfaceData As SP_DEVICE_INTERFACE_DATA
Dim Needed As Long
Dim OutputReportData(7) As Byte
Dim PreparsedData As Long
Dim Result As Long
Dim Timeout As Boolean
Dim dp As Byte ' 7-seg decimal point
Dim busy As Byte ' busy with a HID report
'Set these to match the values in the device's firmware.
Const MyVendorID = &H547
Const MyProductID = &H7450
'_____________________________________________________________
Private Sub Startup()
busy = 0 ' initially no HID reports being processed
tmrRWData.Enabled = False
tmrRWData.Interval = 10 ' send/receive HID report every 10 msec
tbVID.Text = Hex$(MyVendorID)
tbPID.Text = Hex$(MyProductID)
End Sub
'_____________________________________________________________
Private Sub cmdAcquire_Click() ' look for HID device with prescribed VID/PID
Dim DeviceDetected As Boolean
DeviceDetected = FindTheHid
If DeviceDetected = True Then
Call GetDeviceCapabilities ' learn device capabilities (need buffer size)
tbMsg.Text = "Device Found"
tmrRWData.Enabled = True ' enable timer
Else
tbMsg.Text = "Device Not found"
End If
End Sub
'_____________________________________________________________
Private Sub ReadAndWriteToDevice()
busy = 1
Call WriteReport
Call ReadReport
busy = 0
End Sub
'_____________________________________________________________
Function FindTheHid() As Boolean
'Makes a series of API calls to locate the desired HID-class device.
'Returns True if the device is detected, False if not detected.
Dim Count As Integer
Dim GUIDString As String
Dim HidGuid As GUID
Dim MemberIndex As Long
LastDevice = False
MyDeviceDetected = False
Result = HidD_GetHidGuid(HidGuid)
'******************************************************************************
'SetupDiGetClassDevs
'Returns: a handle to a device information set for all installed devices.
'Requires: the HidGuid returned in GetHidGuid.
'******************************************************************************
DeviceInfoSet = SetupDiGetClassDevs _
(HidGuid, _
vbNullString, _
0, _
(DIGCF_PRESENT Or DIGCF_DEVICEINTERFACE))
DataString = GetDataString(DeviceInfoSet, 32)
'******************************************************************************
'SetupDiEnumDeviceInterfaces
'On return, MyDeviceInterfaceData contains the handle to a
'SP_DEVICE_INTERFACE_DATA structure for a detected device.
'Requires:
'the DeviceInfoSet returned in SetupDiGetClassDevs.
'the HidGuid returned in GetHidGuid.
'An index to specify a device.
'******************************************************************************
'Begin with 0 and increment until no more devices are detected.
MemberIndex = 0
Do
'The cbSize element of the MyDeviceInterfaceData structure must be set to
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