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            EEPW首頁 > 嵌入式系統(tǒng) > 設(shè)計應(yīng)用 > CRC校驗原理與程序設(shè)計――(RS485總線系統(tǒng)應(yīng)用之1)

            CRC校驗原理與程序設(shè)計――(RS485總線系統(tǒng)應(yīng)用之1)

            作者: 時間:2018-08-17 來源:網(wǎng)絡(luò) 收藏

            本文引用地址:http://www.biyoush.com/article/201808/387091.htm

            0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF, 0x2D, 0xED,

            0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,

            0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60,

            0x61, 0xA1, 0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67,

            0xA5, 0x65, 0x64, 0xA4, 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F,

            0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68,

            0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA, 0xBE, 0x7E,

            0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,

            0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71,

            0x70, 0xB0, 0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92,

            0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C,

            0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B,

            0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89, 0x4B, 0x8B,

            0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,

            0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42,

            0x43, 0x83, 0x41, 0x81, 0x80, 0x40 } ;

            static unsigned char auchCRCLo[] = {

            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,

            0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,

            0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,

            0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,

            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,

            0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,

            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,

            0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,

            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,

            0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,

            0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,

            0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,

            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,

            0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,

            0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,

            0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,

            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,

            0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,

            0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,

            0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,

            0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,

            0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,

            0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,

            0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,

            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,

            0x80, 0x41, 0x00, 0xC1, 0x81, 0x40 } ;

            3.1.2 用VB編寫的程序

            Private Function CRC16(data() As Byte) As String

            Dim CRC16Hi As Byte

            Dim CRC16Lo As Byte

            CRC16Hi = HFF

            CRC16Lo = HFF

            Dim i As Integer

            Dim iIndex As Long

            For i = 0 To UBound(data)

            iIndex = CRC16Lo Xor data(i)

            CRC16Lo = CRC16Hi Xor GetCRCLo(iIndex) ’低位處理

            CRC16Hi = GetCRCHi(iIndex) ’高位處理

            Next i

            Dim ReturnData(1) As Byte

            ReturnData(0) = CRC16Hi ’CRC高位

            ReturnData(1) = CRC16Lo ’CRC低位

            CRC16 = ReturnData

            End Function

            Function GetCRCHi(Ind As Long) As Byte ’CRC高位字節(jié)值表

            GetCRCHi = Choose(Ind + 1,_

            H00, HC0, HC1, H01, HC3, H03, H02, HC2, HC6, H06,_

            H07, HC7, H05, HC5, HC4, H04, HCC, H0C, H0D, HCD,_

            H0F, HCF, HCE, H0E, H0A, HCA, HCB, H0B, HC9, H09,_

            H08, 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,_



            關(guān)鍵詞: CRC校驗 RS485總線

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