DSP28335 高速modbus代码实现
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发布日期：2021-05-06 22:01:43
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Modbus????????
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???modbus.h
#ifndef MODBUS_H#define MODBUS_Htypedef enum { MB_FUNC_READ_COIL = 1, MB_FUNC_READ_INPUT, MB_FUNC_READ_HOLDINGREGISTERS, MB_FUNC_READ_INPUTREGISTERS, MB_FUNC_FORCE_COIL, MB_FUNC_WRITE_HOLDINGREGISTER, MB_FUNC_FORCE_NCOILS = 15, MB_FUNC_WRITE_NREGISTERS = 16} ModbusFunctionCode;typedef enum { MB_ERROR_ILLEGALFUNC = 1, MB_ERROR_ILLEGALADDR, MB_ERROR_ILLEGALDATA, MB_ERROR_SLVFAILURE, MB_ERROR_ACKNOWLEDGE, MB_ERROR_SLVBUSY, MB_ERROR_NEGACKNOWLEDGE, MB_ERROR_MEMPARITY, MB_ERROR_GATEWAYPATHUN} ModbusError;typedef enum { MB_CREATE, MB_START, MB_TIMER_T35_WAIT, MB_IDLE, MB_RECEIVE, MB_PROCESS, MB_TRANSMIT, MB_DESTROY} ModbusState;typedef struct ModbusData ModbusData;struct ModbusData { Uint16 slaveAddress; Uint16 functionCode; Uint32 contentIdx; Uint32 numofregisters; Uint16 content[20]; Uint16 size; Uint16 crc;};void KD_Modbus_Init(void);typedef struct ModbusCoilsMap ModbusCoilsMap;struct ModbusCoilsMap { Uint16 dummy1; Uint16 dummy2; Uint16 dummy3; Uint16 dummy4; Uint16 dummy5; Uint16 dummy6; Uint16 dummy7; Uint16 dummy8; Uint16 dummy9; Uint16 dummy10; Uint16 dummy11; Uint16 dummy12; Uint16 dummy13; Uint16 dummy14; Uint16 dummy15; Uint16 dummy16; Uint16 dummy17; Uint16 dummy18; Uint16 dummy19; Uint16 dummy20; Uint16 dummy21; Uint16 dummy22; Uint16 dummy23; Uint16 dummy24; Uint16 dummy25; Uint16 dummy26; Uint16 dummy27; Uint16 dummy28; Uint16 dummy29; Uint16 dummy30; Uint16 dummy31; Uint16 dummy32; Uint16 dummy33; Uint16 dummy34; Uint16 dummy35; Uint16 dummy36; Uint16 dummy37; Uint16 dummy38; Uint16 dummy39; Uint16 dummy40;};typedef struct ModbusInputsMap ModbusInputsMap;struct ModbusInputsMap { Uint16 dummy1; Uint16 dummy2; Uint16 dummy3; Uint16 dummy4; Uint16 dummy5; Uint16 dummy6; Uint16 dummy7; Uint16 dummy8; Uint16 dummy9; Uint16 dummy10; Uint16 dummy11; Uint16 dummy12; Uint16 dummy13; Uint16 dummy14; Uint16 dummy15; Uint16 dummy16; Uint16 dummy17; Uint16 dummy18; Uint16 dummy19; Uint16 dummy20; Uint16 dummy21; Uint16 dummy22; Uint16 dummy23; Uint16 dummy24; Uint16 dummy25; Uint16 dummy26; Uint16 dummy27; Uint16 dummy28; Uint16 dummy29; Uint16 dummy30; Uint16 dummy31; Uint16 dummy32; Uint16 dummy33; Uint16 dummy34; Uint16 dummy35; Uint16 dummy36; Uint16 dummy37; Uint16 dummy38; Uint16 dummy39; Uint16 dummy40;};typedef struct ModbusHoldingRegistersMap ModbusHoldingRegistersMap;struct ModbusHoldingRegistersMap { Uint16 dummy1; Uint16 dummy2; Uint16 dummy3; Uint16 dummy4; Uint16 dummy5; Uint16 dummy6; Uint16 dummy7; Uint16 dummy8; Uint16 dummy9; Uint16 dummy10; Uint16 dummy11; Uint16 dummy12; Uint16 dummy13; Uint16 dummy14; Uint16 dummy15; Uint16 dummy16; Uint16 dummy17; Uint16 dummy18; Uint16 dummy19; Uint16 dummy20; Uint16 dummy21; Uint16 dummy22; Uint16 dummy23; Uint16 dummy24; Uint16 dummy25; Uint16 dummy26; Uint16 dummy27; Uint16 dummy28; Uint16 dummy29; Uint16 dummy30; Uint16 dummy31; Uint16 dummy32; Uint16 dummy33; Uint16 dummy34; Uint16 dummy35; Uint16 dummy36; Uint16 dummy37; Uint16 dummy38; Uint16 dummy39; Uint16 dummy40;};typedef struct ModbusInputRegistersMap ModbusInputRegistersMap;struct ModbusInputRegistersMap { Uint16 dummy1; Uint16 dummy2; Uint16 dummy3; Uint16 dummy4; Uint16 dummy5; Uint16 dummy6; Uint16 dummy7; Uint16 dummy8; Uint16 dummy9; Uint16 dummy10; Uint16 dummy11; Uint16 dummy12; Uint16 dummy13; Uint16 dummy14; Uint16 dummy15; Uint16 dummy16; Uint16 dummy17; Uint16 dummy18; Uint16 dummy19; Uint16 dummy20; Uint16 dummy21; Uint16 dummy22; Uint16 dummy23; Uint16 dummy24; Uint16 dummy25; Uint16 dummy26; Uint16 dummy27; Uint16 dummy28; Uint16 dummy29; Uint16 dummy30; Uint16 dummy31; Uint16 dummy32; Uint16 dummy33; Uint16 dummy34; Uint16 dummy35; Uint16 dummy36; Uint16 dummy37; Uint16 dummy38; Uint16 dummy39; Uint16 dummy40;};typedef struct ModbusSlaveStruc { ModbusState state; Uint16 rdata[30]; Uint16 sdata[100]; Uint16 recvlen; Uint16 sendlen; ModbusCoilsMap coils; ModbusInputsMap inputs; ModbusHoldingRegistersMap holdingRegisters; ModbusInputRegistersMap inputRegisters;} MBSLSTRU;#endif ???modbus.c
/* Modbus???? */#include#include #include #include typedef struct ScicRecvMsgQueueStruc { Uint16 msgLen; Uint16 msgIdx; Uint16 *pMsgData;} ScicRecvMsgQueueStruc;__interrupt void scicTxFifoIsr(void) { if ((public_struc_modbus.sendlen & 0xFF) > bufferdepth) { Temp = bufferdepth; ScicRegs.SCIFFTX.bit.TXFFIL = 0; for (i = 0; i < Temp; i++) { ScicRegs.SCITXBUF = public_struc_modbus.sdata[i + bufferdepth * (public_struc_modbus.sendlen > 12)]; } public_struc_modbus.sendlen = public_struc_modbus.sendlen - bufferdepth + 0x1000; } else { Temp = (public_struc_modbus.sendlen & 0xFF); if (Temp > 0) { ScicRegs.SCIFFTX.bit.TXFFIL = 0; for (i = 0; i < Temp; i++) { ScicRegs.SCITXBUF = public_struc_modbus.sdata[i + bufferdepth * (public_struc_modbus.sendlen > 12)]; } public_struc_modbus.sendlen = 0; } else { if (public_struc_modbus.sendlen == 0) { ScicRegs.SCIFFTX.bit.TXFFIENA = 0; } } } ScicRegs.SCIFFTX.bit.TXFFINTCLR = 1; PieCtrlRegs.PIEACK.bit.ACK8 = 1;}__interrupt void scicRxFifoIsr(void) { if (ScicRegs.SCIFFRX.bit.RXFFIL != 1) { if (public_struc_modbus.rdata[1] == 0) { for (i = 1; i < 8; i++) { public_struc_modbus.rdata[i] = ScicRegs.SCIRXBUF.all; } } if ((public_struc_modbus.rdata[1] == 15) || (public_struc_modbus.rdata[1] == 16)) { if (public_struc_modbus.recvlen == 0) { public_struc_modbus.recvlen = public_struc_modbus.rdata[6] + 9 + 0x1000; ScicRegs.SCIFFRX.bit.RXFFIL = 8; i = public_struc_modbus.recvlen & 0xFF - ((public_struc_modbus.recvlen > 12) * 8); if (i > 8) { ScicRegs.SCIFFRX.bit.RXFFIL = 8; } else { ScicRegs.SCIFFRX.bit.RXFFIL = i; } } else { if ((public_struc_modbus.recvlen > 12) && (public_struc_modbus.recvlen & 0xFF) / 8 < (public_struc_modbus.recvlen & 0xFF) % 8) { for (i = 0; i < 8; i++) { public_struc_modbus.rdata[i + (public_struc_modbus.recvlen > 12) * 8] = ScicRegs.SCIRXBUF.all; } public_struc_modbus.recvlen += 0x1000; i = public_struc_modbus.recvlen & 0xFF - ((public_struc_modbus.recvlen > 12) * 8); if (i > 8) { ScicRegs.SCIFFRX.bit.RXFFIL = 8; } else { ScicRegs.SCIFFRX.bit.RXFFIL = i; } } else { for (i = 0; i < (public_struc_modbus.recvlen & 0xFF) % 8; i++) { public_struc_modbus.rdata[i + (public_struc_modbus.recvlen > 12) * 8] = ScicRegs.SCIRXBUF.all; } if ((public_struc_modbus.recvlen & 0xFF) <= (i + (public_struc_modbus.recvlen > 12) * 8)) { receieve_handler(&public_struc_modbus); public_struc_modbus.rdata[1] = 0; ScicRegs.SCIFFRX.bit.RXFFIL = 1; public_struc_modbus.recvlen = 0; } } } } else { public_struc_modbus.recvlen = 8; if ((public_struc_modbus.rdata[1] >= 1) && (public_struc_modbus.rdata[1] <= 6)) { receieve_handler(&public_struc_modbus); public_struc_modbus.rdata[1] = 0; ScicRegs.SCIFFRX.bit.RXFFIL = 1; } else { receieve_handler(&public_struc_modbus); public_struc_modbus.rdata[1] = 0; ScicRegs.SCIFFRX.bit.RXFFIL = 1; } } } else { public_struc_modbus.rdata[0] = ScicRegs.SCIRXBUF.all; if (public_struc_modbus.rdata[0] == ModbusSlaveAddress) { ScicRegs.SCIFFRX.bit.RXFFIL = 7; } else { ScicRegs.SCIFFRX.bit.RXFFIL = 1; } } ScicRegs.SCIFFRX.bit.RXFFOVRCLR = 1; ScicRegs.SCIFFRX.bit.RXFFINTCLR = 1; PieCtrlRegs.PIEACK.bit.ACK8 = 1;}void KD_Modbus_Init(void) { InitScicGpio(); InitSci(); EALLOW; PieVectTable.SCIRXINTC = &scicRxFifoIsr; PieVectTable.SCITXINTC = &scicTxFifoIsr; EDIS; PieCtrlRegs.PIECTRL.bit.ENPIE = 1; PieCtrlRegs.PIEIER8.bit.INTx5 = 1; PieCtrlRegs.PIEIER8.bit.INTx6 = 1; IER |= M_INT8; public_struc_modbus.recvlen = 0; public_struc_modbus.sendlen = 0; Uint16 i, *pcoils_sub, *pinputs_sub, *pholdingRegisters_sub, *pinputRegisters_sub; public_struc_modbus.pcoils = &public_struc_modbus.coils; public_struc_modbus.pinputs = &public_struc_modbus.inputs; public_struc_modbus.pholdingRegisters = &public_struc_modbus.holdingRegisters; public_struc_modbus.pinputRegisters = &public_struc_modbus.inputRegisters; pcoils_sub = (Uint16 *) public_struc_modbus.pcoils; pinputs_sub = (Uint16 *) public_struc_modbus.pinputs; pholdingRegisters_sub = (Uint16 *) public_struc_modbus.pholdingRegisters; pinputRegisters_sub = (Uint16 *) public_struc_modbus.pinputRegisters; for (i = 0; i < sizeof(public_struc_modbus.coils); i++) { if (i % 2 == 0) { *(pinputs_sub + i) = 1; } else { *(pinputs_sub + i) = 0; } } for (i = 0; i < sizeof(public_struc_modbus.inputRegisters); i++) { *(pholdingRegisters_sub + i) = i + 1; } for (i = 0; i < sizeof(public_struc_modbus.pinputRegisters); i++) { *(pinputRegisters_sub + i) = i + 1; } memset(public_struc_modbus.rdata, 0, sizeof(public_struc_modbus.rdata));}void receieve_handler(MBSLSTRU *pModbusSlave) { uint16 i, lentemp = public_struc_modbus.recvlen & 0xFF; ModbusData ptempdata; pcoils_sub = (Uint16 *) pModbusSlave->pcoils; pinputs_sub = (Uint16 *) pModbusSlave->pinputs; pholdingRegisters_sub = (Uint16 *) pModbusSlave->pholdingRegisters; pinputRegisters_sub = (Uint16 *) pModbusSlave->pinputRegisters; memset(pModbusSlave->sdata, 0, sizeof(pModbusSlave->sdata)); pTempData.crc = (pModbusSlave->rdata[lentemp - 2] << 8) + pModbusSlave->rdata[lentemp - 1]; pModbusSlave->sdata[0] = pModbusSlave->rdata[0]; if (pModbusSlave->rdata[0] == ModbusSlaveAddress) { pModbusSlave->sdata[1] = pModbusSlave->rdata[1]; if (CRC16(pModbusSlave->rdata, lentemp - 2) == pTempData.crc) { pTempData.contentIdx = (pModbusSlave->rdata[2] << 8) + pModbusSlave->rdata[3]; pTempData.numofregisters = (pModbusSlave->rdata[4] << 8) + pModbusSlave->rdata[5]; if ((pTempData.contentIdx + pTempData.numofregisters) > 40) { pModbusSlave->sdata[1] |= 0x80; pModbusSlave->sdata[2] |= 0x03; i = CRC16(pModbusSlave->sdata, 3); pModbusSlave->sdata[3] = (i >> 8) & 0xff; pModbusSlave->sdata[4] = i & 0xff; pModbusSlave->sendlen = 5; ScicRegs.SCIFFTX.bit.TXFFIL = pModbusSlave->sendlen; ScicRegs.SCIFFTX.bit.TXFFIENA = 1; } else { switch (pModbusSlave->rdata[1]) { case MB_FUNC_READ_COIL: pModbusSlave->sdata[2] = (pTempData.numofregisters + 7) / 8; for (i = 0; i < pTempData.numofregisters; i++) { pModbusSlave->sdata[3 + (i / 8)] |= (*(pcoils_sub + i + pTempData.contentIdx) << (i % 8)); } i = CRC16(pModbusSlave->sdata, pModbusSlave->sdata[2] + 3); pModbusSlave->sdata[2 + pModbusSlave->sdata[2] + 1] = (i >> 8) & 0xff; pModbusSlave->sdata[2 + pModbusSlave->sdata[2] + 2] = i & 0xff; pModbusSlave->sendlen = pModbusSlave->sendlen + 5 + pModbusSlave->sdata[2]; if (pModbusSlave->sendlen > bufferdepth) { ScicRegs.SCIFFTX.bit.TXFFIL = bufferdepth; } else { ScicRegs.SCIFFTX.bit.TXFFIL = pModbusSlave->sendlen; } ScicRegs.SCIFFTX.bit.TXFFIENA = 1; break; case MB_FUNC_READ_INPUT: pModbusSlave->sdata[2] = (pTempData.numofregisters + 7) / 8; for (i = 0; i < pTempData.numofregisters; i++) { pModbusSlave->sdata[3 + (i / 8)] |= (*(pinputs_sub + i + pTempData.contentIdx) << (i % 8)); } i = CRC16(pModbusSlave->sdata, pModbusSlave->sdata[2] + 3); pModbusSlave->sdata[2 + pModbusSlave->sdata[2] + 1] = (i >> 8) & 0xff; pModbusSlave->sdata[2 + pModbusSlave->sdata[2] + 2] = i & 0xff; pModbusSlave->sendlen = pModbusSlave->sendlen + 5 + pModbusSlave->sdata[2]; if (pModbusSlave->sendlen > bufferdepth) { ScicRegs.SCIFFTX.bit.TXFFIL = bufferdepth; } else { ScicRegs.SCIFFTX.bit.TXFFIL = pModbusSlave->sendlen; } ScicRegs.SCIFFTX.bit.TXFFIENA = 1; break; case MB_FUNC_READ_HOLDINGREGISTERS: pModbusSlave->sdata[2] = pTempData.numofregisters * 2; for (i = 0; i < pTempData.numofregisters; i++) { pModbusSlave->sdata[3 + i * 2 + 1] = *(pholdingRegisters_sub + i + pTempData.contentIdx); pModbusSlave->sdata[3 + i * 2 + 1] = (pModbusSlave->sdata[3 + i * 2 + 1] & 0xff); pModbusSlave->sdata[3 + i * 2] = *(pholdingRegisters_sub + i + pTempData.contentIdx); pModbusSlave->sdata[3 + i * 2] = (pModbusSlave->sdata[3 + i * 2] >> 8); } i = CRC16(pModbusSlave->sdata, pModbusSlave->sdata[2] + 3); pModbusSlave->sdata[2 + pModbusSlave->sdata[2] + 1] = (i >> 8) & 0xff; pModbusSlave->sdata[2 + pModbusSlave->sdata[2] + 2] = i & 0xff; pModbusSlave->sendlen = pModbusSlave->sendlen + 5 + pModbusSlave->sdata[2]; if (pModbusSlave->sendlen > bufferdepth) { ScicRegs.SCIFFTX.bit.TXFFIL = bufferdepth; } else { ScicRegs.SCIFFTX.bit.TXFFIL = pModbusSlave->sendlen; } ScicRegs.SCIFFTX.bit.TXFFIENA = 1; break; case MB_FUNC_READ_INPUTREGISTERS: pModbusSlave->sdata[2] = pTempData.numofregisters * 2; for (i = 0; i < pTempData.numofregisters; i++) { pModbusSlave->sdata[3 + i * 2 + 1] = *(pinputRegisters_sub + i + pTempData.contentIdx); pModbusSlave->sdata[3 + i * 2 + 1] = (pModbusSlave->sdata[3 + i * 2 + 1] & 0xff); pModbusSlave->sdata[3 + i * 2] = *(pinputRegisters_sub + i + pTempData.contentIdx); pModbusSlave->sdata[3 + i * 2] = (pModbusSlave->sdata[3 + i * 2] >> 8); } i = CRC16(pModbusSlave->sdata, pModbusSlave->sdata[2] + 3); pModbusSlave->sdata[2 + pModbusSlave->sdata[2] + 1] = (i >> 8) & 0xff; pModbusSlave->sdata[2 + pModbusSlave->sdata[2] + 2] = i & 0xff; pModbusSlave->sendlen = pModbusSlave->sendlen + 5 + pModbusSlave->sdata[2]; if (pModbusSlave->sendlen > bufferdepth) { ScicRegs.SCIFFTX.bit.TXFFIL = bufferdepth; } else { ScicRegs.SCIFFTX.bit.TXFFIL = pModbusSlave->sendlen; } ScicRegs.SCIFFTX.bit.TXFFIENA = 1; break; case MB_FUNC_FORCE_COIL: for (i = 2; i < 8; i++) { pModbusSlave->sdata[i] = pModbusSlave->rdata[i]; } if (pTempData.numofregisters == 0xFF00) { *(pcoils_sub + pTempData.contentIdx) = 1; pModbusSlave->sendlen = 8; } else if (pTempData.numofregisters == 0x0000) { *(pcoils_sub + pTempData.contentIdx) = 0; pModbusSlave->sendlen = 8; } else { pModbusSlave->sdata[1] = 0x85; pModbusSlave->sdata[2] = 0x03; i = CRC16(pModbusSlave->sdata, 3); pModbusSlave->sdata[3] = (i >> 8) & 0xff; pModbusSlave->sdata[4] = i & 0xff; pModbusSlave->sendlen = 5; } ScicRegs.SCIFFTX.bit.TXFFIL = pModbusSlave->sendlen; ScicRegs.SCIFFTX.bit.TXFFIENA = 1; break; case MB_FUNC_WRITE_HOLDINGREGISTER: for (i = 2; i < 8; i++) { pModbusSlave->sdata[i] = pModbusSlave->rdata[i]; } *(pholdingRegisters_sub + pTempData.contentIdx) = pTempData.numofregisters; pModbusSlave->sendlen = 8; ScicRegs.SCIFFTX.bit.TXFFIL = pModbusSlave->sendlen; ScicRegs.SCIFFTX.bit.TXFFIENA = 1; break; case MB_FUNC_FORCE_NCOILS: for (i = 0; i < pTempData.numofregisters; i++) { *(pcoils_sub + i + pTempData.contentIdx) = ((pModbusSlave->rdata[i / 8 + 7] >> (i % 8)) & 0x01); } for (i = 2; i < 7; i++) { pModbusSlave->sdata[i] = pModbusSlave->rdata[i]; } i = CRC16(pModbusSlave->sdata, 7); pModbusSlave->sdata[7] = (i >> 8) & 0xff; pModbusSlave->sdata[8] = i & 0xff; pModbusSlave->sendlen = 9; ScicRegs.SCIFFTX.bit.TXFFIL = pModbusSlave->sendlen; ScicRegs.SCIFFTX.bit.TXFFIENA = 1; break; case MB_FUNC_WRITE_NREGISTERS: for (i = 0; i < pTempData.numofregisters; i++) { *(pholdingRegisters_sub + i + pTempData.contentIdx) = ((pModbusSlave->rdata[i * 2 + 7] << 8) + (pModbusSlave->rdata[i * 2 + 8] & 0xff)); } for (i = 2; i < 6; i++) { pModbusSlave->sdata[i] = pModbusSlave->rdata[i]; } i = CRC16(pModbusSlave->sdata, 6); pModbusSlave->sdata[6] = (i >> 8) & 0xff; pModbusSlave->sdata[7] = i & 0xff; pModbusSlave->sendlen = 8; ScicRegs.SCIFFTX.bit.TXFFIL = pModbusSlave->sendlen; ScicRegs.SCIFFTX.bit.TXFFIENA = 1; break; default: pModbusSlave->sdata[2] = 0x03; i = CRC16(pModbusSlave->sdata, 3); pModbusSlave->sdata[3] = (i >> 8) & 0xff; pModbusSlave->sdata[4] = i & 0xff; pModbusSlave->sendlen = 5; ScicRegs.SCIFFTX.bit.TXFFIL = pModbusSlave->sendlen; ScicRegs.SCIFFTX.bit.TXFFIENA = 1; break; } } } else { pModbusSlave->sdata[1] |= 0x80; pModbusSlave->sdata[2] |= 0x03; i = CRC16(pModbusSlave->sdata, 3); pModbusSlave->sdata[3] = (i >> 8) & 0xff; pModbusSlave->sdata[4] = i & 0xff; pModbusSlave->sendlen = 5; ScicRegs.SCIFFTX.bit.TXFFIL = pModbusSlave->sendlen; ScicRegs.SCIFFTX.bit.TXFFIENA = 1; } }}Uint16 CRC16(Uint16 *nData, Uint16 wLength) { static const Uint16 wCRCTable[] = { 0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241, 0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440, 0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40, 0x0A00, 0xCA61, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841, 0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDB41, 0xDA81, 0x1A40, 0x1E00, 0xDC01, 0xD481, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41, 0xD400, 0xD4C1, 0xD581, 0xD541, 0xD701, 0x17C0, 0x1680, 0xD641, 0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040, 0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240, 0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441, 0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41, 0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840, 0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41, 0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40, 0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640, 0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041, 0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240, 0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441, 0x6C00, 0xAAC1, 0xAD81, 0x6D40, 0xAFA1, 0x6FC0, 0x6E80, 0xAE41, 0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840, 0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41, 0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBD41, 0xBC81, 0x7C40, 0xBA41, 0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640, 0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041, 0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241, 0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440, 0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40, 0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841, 0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40, 0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41, 0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641, 0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040 }; Uint16 nTemp; Uint16 wCRCWord = 0xFFFF; while (wLength--) { nTemp = (*nData++ ^ wCRCWord) & 0xff; wCRCWord >>= 8; wCRCWord ^= wCRCTable[nTemp]; } wCRCWord = (wCRCWord << 8) | (wCRCWord >> 8); return wCRCWord;}
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