单片机modbus通讯实例

-----------------------Page1-----------------------#includereg52.h#includeabsacc.h#includeintrins.h#includectype.h/*Thesemacrodefinesimpledatatype¶¨Òå¼òµ¥µÄÊý¾ÝÀàÐÍ*/#defineucharunsignedchar#defineulintunsignedlong#defineuintunsignedint/*ThesemacroforMudbusfunctioncode£ºmudbus¹¦ÄÜÂë*/#defineReadCoilSta0x01//0Xreadcoilfunction¶ÁÏßȦ#defineForceSingleCoil0x05//0XforcesinglecoilfunctionдÏßȦ#defineReadHoldReg0x03//4Xreadinputregister¶Á¼Ä´æÆ÷#definePresetMulReg0x06//4Xwritemultiregisterд¼Ä´æÆ÷/*Thesemacrodescribeindexofcommunictionmessagefromstarttoend*/#defineCommIndexSlaveID0//macroforslaveIDÕ¾ºÅ#defineCommIndexFunction1//macroforfunctioncodeµÄ¹¦ÄÜÂë#defineCommIndexStartAdrHi2//macrofordatahightadrµØÖ·¸ßλ#defineCommIndexStartAdrLo3//macrofordatalowadrµØÖ·µØλ#defineCommIndexNoPointHi4//macroforhightquantitydatasÊý¾Ý¸ßλ#defineCommIndexNoPointLo5//macroforlowquantitydatasÊý¾ÝµÍλ/*Thesemacrodescriberecievemessagelenghtofdifferentfunctioncode*//*Butnotincludedatalenght,thedataismasterwritetoslave*//*becausewedon'tknowthedatalenghtprior,itdependonComBuf[ComIndexNoPoint]value*/#defineReadCoilStaIndexEnd7//0~7,0x01,0X#defineForceSingleCoilIndexEnd7//0~7,0x05,0X#defineReadHoldRegIndexEnd7//0~7,0x03,4X#definePresetMulRegIndexEnd7//0~8,0x10,4X/*thesemacrodescribesendorrecieveallowed*/#defineSEND1//sendallowedÔÊÐí·¢ËÍ#defineRECIEVE0//recieveallowedÔÊÐí½ÓÊÕ#defineSlaveID0x01//theslave'sID#defineSendRecieveDelay50//SendturntoRecieveorRecieveturntoSenddelaytimevlaue·¢ËÍÓë½ÓÊÕת»»Ê±¼ä#defineMaxDataLen30//presetCommBufarrayMaxlengthͨѶ»º³åÇømax³¤¶È#defineMaxRegLen20//presetSlaveOutputBufMaxlenght/*variableformodbusisfollowing±äÁ¿¶¨Òå*/bitdataRecFinishF;uchardataCommIndex;uchardatawriteadr;uchardataCommIndexEnd;ucharidataCommBuf[MaxDataLen];ucharidataSlaveOutputBuf[MaxRegLen];//Hight8bitofwordisfront,Low8bitisback¸ß8λÔÚÇ°µÍ8λÔÚºóucharidataSlaveInputBuf[MaxRegLen];uchardata*port_at_0x7F;/*expdatadefine*///#defineSlaveAdrXBYTE[0xD800]sbitLED0=P1^0;sbitLED1=P1^1;sbitLED2=P1^2;sbitLED3=P1^3;sbitLED4=P1^4;sbitLED5=P1^5;sbitLED6=P1^6;sbitLED7=P1^7;/*ºó¼ÓµÄP0*/sbitLED00=P0^0;sbitLED01=P0^1;sbitLED02=P0^2;sbitLED03=P0^3;sbitLED04=P0^4;sbitLED05=P0^5;sbitLED06=P0^6;sbitLED07=P0^7;ucharidataForceCoilBuf[10];ucharcount=0;ucharforceval=0x00;//bitforcesendF=0;/*TableOfCRCValuesforhigh-orderbyteCRCУÑé¸ßλ*/ucharcodeauchCRCHi[]={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,-----------------------Page2-----------------------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};/*TableofCRCvaluesforlow-orderbyteCRCУÑéµÍλ*/ucharcodeauchCRCLo[]={0x00,0xC0,0xC1,0x01,0xC3,0x03,0x02,0xC2,0xC6,0x06,0x07,0xC7,0x05,0xC5,0xC4,0x04,0xCC,0x0C,0x0D,0xCD,0x0F,0xCF,0xCE,0x0E,0x0A,0xCA,0xCB,0x0B,0xC9,0x09,0x08,0xC8,0xD8,0x18,0x19,0xD9,0x1B,0xDB,0xDA,0x1A,0x1E,0xDE,0xDF,0x1F,0xDD,0x1D,0x1C,0xDC,0x14,0xD4,0xD5,0x15,0xD7,0x17,0x16,0xD6,0xD2,0x12,0x13,0xD3,0x11,0xD1,0xD0,0x10,0xF0,0x30,0x31,0xF1,0x33,0xF3,0xF2,0x32,0x36,0xF6,0xF7,0x37,0xF5,0x35,0x34,0xF4,0x3C,0xFC,0xFD,0x3D,0xFF,0x3F,0x3E,0xFE,0xFA,0x3A,0x3B,0xFB,0x39,0xF9,0xF8,0x38,0x28,0xE8,0xE9,0x29,0xEB,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,