📄 crc-16~1.frm
字号:
VERSION 5.00
Begin VB.Form Form1
BackColor = &H80000011&
BorderStyle = 5 'Sizable ToolWindow
Caption = "Form1"
ClientHeight = 4875
ClientLeft = 60
ClientTop = 300
ClientWidth = 6045
LinkTopic = "Form1"
MaxButton = 0 'False
MinButton = 0 'False
ScaleHeight = 4875
ScaleWidth = 6045
ShowInTaskbar = 0 'False
StartUpPosition = 3 '窗口缺省
Begin VB.TextBox Text3
Height = 495
Left = 2160
TabIndex = 7
Top = 2520
Width = 1215
End
Begin VB.CommandButton Command3
Caption = "关 闭"
Height = 495
Left = 4320
TabIndex = 6
Top = 3240
Width = 1215
End
Begin VB.CommandButton Command2
Caption = "清 除"
Height = 495
Left = 2400
TabIndex = 5
Top = 3240
Width = 1215
End
Begin VB.CommandButton Command1
Caption = "计 算"
Height = 495
Left = 480
TabIndex = 4
Top = 3240
Width = 1215
End
Begin VB.TextBox Text4
Height = 495
Left = 600
TabIndex = 2
Top = 2520
Width = 1215
End
Begin VB.TextBox Text2
Height = 495
Left = 2760
TabIndex = 1
Top = 480
Width = 1455
End
Begin VB.TextBox Text1
Height = 495
Left = 600
TabIndex = 0
Top = 480
Width = 1455
End
Begin VB.Label Label1
BackColor = &H80000011&
Caption = "请输入两个数据（二位十六进制）"
ForeColor = &H80000014&
Height = 255
Left = 360
TabIndex = 10
Top = 120
Width = 2895
End
Begin VB.Label Label4
BackColor = &H80000011&
Caption = "低八位"
ForeColor = &H80000014&
Height = 255
Left = 2160
TabIndex = 9
Top = 2280
Width = 855
End
Begin VB.Label Label3
BackColor = &H80000011&
Caption = "高八位"
ForeColor = &H80000014&
Height = 255
Left = 600
TabIndex = 8
Top = 2280
Width = 855
End
Begin VB.Label Label2
BackColor = &H80000011&
Caption = "CRC-16结果是："
Height = 255
Left = 480
TabIndex = 3
Top = 1800
Width = 1455
End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
Dim CRC() As Byte
Dim d() As Byte '待传输数据
ReDim d(1) As Byte
Dim ha As String
d(0) = Val("&H" & CStr(Text1.Text) & "&")
d(0) = (d(0) And &H80) \ 128 + (d(0) And &H40) \ 32 + (d(0) And &H20) \ 8 + (d(0) And &H10) \ 2 + (d(0) And &H8) * 2 + (d(0) And &H4) * 8 + (d(0) And &H2) * 32 + (d(0) And &H1) * 128
d(1) = Val("&H" & CStr(Text2.Text) & "&")
d(1) = (d(1) And &H80) \ 128 + (d(1) And &H40) \ 32 + (d(1) And &H20) \ 8 + (d(1) And &H10) \ 2 + (d(1) And &H8) * 2 + (d(1) And &H4) * 8 + (d(1) And &H2) * 32 + (d(1) And &H1) * 128
CRC = CRC16(d) '调用CRC16计算函数
ha = (CRC(0) And &H80) \ 128 + (CRC(0) And &H40) \ 32 + (CRC(0) And &H20) \ 8 + (CRC(0) And &H10) \ 2 + (CRC(0) And &H8) * 2 + (CRC(0) And &H4) * 8 + (CRC(0) And &H2) * 32 + (CRC(0) And &H1) * 128
hb = (CRC(1) And &H80) \ 128 + (CRC(1) And &H40) \ 32 + (CRC(1) And &H20) \ 8 + (CRC(1) And &H10) \ 2 + (CRC(1) And &H8) * 2 + (CRC(1) And &H4) * 8 + (CRC(1) And &H2) * 32 + (CRC(1) And &H1) * 128
Text4.Text = Hex(hb)
Text3.Text = Hex(ha)
End Sub
Private Sub Command2_Click()
Text1.Text = ""
Text2.Text = ""
Text3.Text = ""
Text4.Text = ""
End Sub
Private Sub Command3_Click()
End
End Sub
Public Function CRC16(data() As Byte) As String
Dim CRC16Hi As Byte
Dim CRC16Lo As Byte
CRC16Hi = &H0
CRC16Lo = &H0
Dim i As Integer
Dim iIndex As Long
For i = 0 To 1
iIndex = CRC16Lo Xor data(i)
CRC16Lo = CRC16Hi Xor GetCRCLo(iIndex) '低位处理
CRC16Hi = GetCRCHi(iIndex) '高位处理
Next i
Dim ReturnData(1) As Byte
ReturnData(0) = CRC16Hi 'CRC高位
ReturnData(1) = CRC16Lo 'CRC低位
CRC16 = ReturnData
End Function
Public Function GetCRCLo(Ind As Long) As Byte
GetCRCLo = Choose(Ind + 1, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H1, &HC0, _
&H80, &H41, &H0, &HC1, &H81, &H40, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40, &H1, &HC0, &H80, &H41, &H1, &HC0, &H80, &H41, &H0, &HC1, &H81, &H40)
End Function
Public Function GetCRCHi(Ind As Long) As Byte
GetCRCHi = Choose(Ind + 1, &H0, &HC0, &HC1, &H1, &HC3, &H3, &H2, &HC2, &HC6, &H6, &H7, &HC7, &H5, &HC5, &HC4, &H4, &HCC, &HC, &HD, &HCD, &HF, &HCF, &HCE, &HE, &HA, &HCA, &HCB, &HB, &HC9, &H9, &H8, &HC8, &HD8, &H18, &H19, &HD9, &H1B, &HDB, &HDA, &H1A, &H1E, &HDE, &HDF, &H1F, &HDD, &H1D, &H1C, &HDC, &H14, &HD4, &HD5, &H15, &HD7, &H17, &H16, &HD6, &HD2, &H12, &H13, &HD3, &H11, &HD1, &HD0, &H10, &HF0, &H30, &H31, &HF1, &H33, &HF3, &HF2, &H32, &H36, &HF6, &HF7, &H37, &HF5, &H35, &H34, &HF4, &H3C, &HFC, &HFD, &H3D, &HFF, &H3F, &H3E, &HFE, &HFA, &H3A, &H3B, &HFB, &H39, &HF9, &HF8, &H38, &H28, &HE8, &HE9, &H29, &HEB, &H2B, &H2A, &HEA, &HEE, &H2E, &H2F, &HEF, &H2D, &HED, &HEC, &H2C, &HE4, &H24, &H25, &HE5, &H27, &HE7, &HE6, &H26, &H22, &HE2, &HE3, &H23, &HE1, &H21, &H20, &HE0, &HA0, &H60, _
&H61, &HA1, &H63, &HA3, &HA2, &H62, &H66, &HA6, &HA7, &H67, &HA5, &H65, &H64, &HA4, &H6C, &HAC, &HAD, &H6D, &HAF, &H6F, &H6E, &HAE, &HAA, &H6A, &H6B, &HAB, &H69, &HA9, &HA8, &H68, &H78, &HB8, &HB9, &H79, &HBB, &H7B, &H7A, &HBA, &HBE, &H7E, &H7F, &HBF, &H7D, &HBD, &HBC, &H7C, &HB4, &H74, &H75, &HB5, &H77, &HB7, &HB6, &H76, &H72, &HB2, &HB3, &H73, &HB1, &H71, &H70, &HB0, &H50, &H90, &H91, &H51, &H93, &H53, &H52, &H92, &H96, &H56, &H57, &H97, &H55, &H95, &H94, &H54, &H9C, &H5C, &H5D, &H9D, &H5F, &H9F, &H9E, &H5E, &H5A, &H9A, &H9B, &H5B, &H99, &H59, &H58, &H98, &H88, &H48, &H49, &H89, &H4B, &H8B, &H8A, &H4A, &H4E, &H8E, &H8F, &H4F, &H8D, &H4D, &H4C, &H8C, &H44, &H84, &H85, &H45, &H87, &H47, &H46, &H86, &H82, &H42, &H43, &H83, &H41, &H81, &H80, &H40)
End Function
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