RS485_上下位机多机通信网络系统设计

/* #include<ctype.h> #include<string.h> #include<absacc.h> #include<stdlib.h> #include<stdio.h> #include<math.h> #include<Intrins.h> #include<Stdarg.h> #include<reg51.h> #include <reg51.h> main() { unsigned int i; TMOD=0x20; TH1=0xcc;TL1=0xcc; TR1=1; SCON=0x50; while(1) { TI=1; P1=0xfd; for(i=0;i<=10000;i++); SBUF=0xff; while(RI==0); RI=0; P1=SBUF; while(TI==0); for(i=0;i<=10000;i++); } } #include <reg51.h> #define uchar unsigned char #define uint unsigned int uint data arc,crc; uint code crctable[]={ 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, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841, 0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40, 0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41, 0x1400, 0xD4C1, 0xD581, 0x1540, 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, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41, 0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840, 0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41, 0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40, 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 }; uchar code tab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d, 0x7d,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71 }; void init() { EA=1; ES=1; TMOD=0x20; TH1=0xfd; TL1=0xfd; TR1=1; SCON=0x50; } uint crc16(uchar *str,uint num) { uint i; crc=0xffff; for (i=0;i<num;i++) { arc=(str[i]^crc)&0x00ff; crc=_irol_(crc,8); crc=crc&0x00ff; crc=crc^crctable[arc]; }; return(crc); } void send() { uchar dt; TI=0; P0=0xfe; dt=P0; SBUF=dt; while(TI==0); TI=0; } void delay(uint t) { uint i; for(i=0;i<t;i++); } recrial() interrupt 4 using 1 { int crc; uchar i,point; if(_testbit_(TI)) { sbufda++; if(sbufda<=tx_count) { ctr1=0; SBUF=txbuf[sbufda]; } else{ ctr1=1; sbufda=0; } _nop_(); _nop_(); } if(_testbit_(RI)) { rxbuf[0]=rxbuf[1]; rxbuf[1]=rxbuf[2]; rxbuf[2]=rxbuf[3]; rxbuf[3]=rxbuf[4]; rxbuf[4]=rxbuf[5]; rxbuf[5]=rxbuf[6]; rxbuf[6]=rxbuf[7]; rxbuf[7]=SBUF; if(rxbuf[0]==0x01) { crc=0xffff; for(i=0;i<=7;i++) { arc=(rxbuf[i]^crc)&0x00ff; crc=_irol_(crc,8); crc=crc&0x00ff; crc=crc^crctable[arc]; _nop_(); } if(crc==0) { switch(rxbuf[1]) { case 0x03: txbuf[0]=rxbuf[0]; txbuf[1]=rxbuf[1]; txbuf[2]=(rxbuf[5])*2; point=txbuf[2]; sent=3; aba=rxbuf[3]; for(i=0;i<point;i++) { txbuf[sent]=*aba; aba++; sent++; } crc=crc16(txbuf,sent); _nop_(); sent++; txbuf[sent]=crc/256; sent--; txbuf[sent]=crc%256; ctr1=0; SBUF=txbuf[0]; ES=1; sent++; tx_count=sent; sbufda=0; break; case 0x04: { txbuf[0]=rxbuf[0]; txbuf[1]=rxbuf[1]; txbuf[2]=2; txbuf[3]=kcc1; txbuf[4]=kcc2; sent=5; crc=crc16(txbuf,sent); _nop_(); sent++; txbuf[sent]=crc/256; sent--; txbuf[sent]=crc%256; ctr1=0; SBUF=txbuf[0]; ES=1; sent++; tx_count=6; sbufda=0; break; } case 0x60: { txbuf[0]=rxbuf[0]; txbuf[1]=rxbuf[1]; txbuf[2]=rxbuf[2]; txbuf[3]=rxbuf[3]; txbuf[4]=rxbuf[4]; txbuf[5]=rxbuf[5]; txbuf[6]=rxbuf[6]; txbuf[7]=rxbuf[7]; aaa=rxbuf[4]; bbb=rxbuf[5]; delay(100); ctr1=0; SBUF=txbuf[0]; ES=1; tx_count=7; sbufda=0; break; default break; } } } } ES=1; uchar data rxbuf[8]; uchar dt; uchar i,j; { if(RI==1) //接收中断 { RI=0; rxbuf[i]=SBUF; i++; } } P0=rxbuf[1]; if(rxbuf[0]==0x01) { crc=0xffff; for(i=0;i<=7;i++) { P2=rxbuf[7]; // arc=(rxbuf[i]^crc)&0x00ff; crc=_irol_(crc,8); crc=crc&0x00ff; crc=crc^crctable[arc]; _nop_(); } } // if(crc==0) if(rxbuf[0]==0x01) { crc=0xffff; for(i=0;i<=7;i++) { arc=(rxbuf[i]^crc)&0x00ff; crc=_irol_(crc,8); crc=crc&0x00ff; crc=crc^crctable[arc]; _nop_(); } P0=0xaa; if(crc==0) P0=0xaa; } //delay(50); TI=0; dt=0x33; SBUF=dt; while(TI==0); TI=0; } void main() { //uchar i,j; init(); while(1); //send(); } */ #include<ctype.h> #include<string.h> #include<absacc.h> #include<stdlib.h> #include<stdio.h> #include<math.h> #include<Intrins.h> #include<Stdarg.h> #include<reg51.h> #define uchar unsigned char #define uint unsigned int sbit ctr1=P1^3; uint data arc,crc; uchar data sbufda,tx_count,sent,kcc1,kcc2,aaa,bbb; uchar data *aba; uchar data rxbuf[8]; uchar data txbuf[18]; void delay(int m) { int x,i; for(i=1;i<m;i++) {for(x=1;x<100;x++); } } uint crc16(uchar *str,uint num); uint code crctable[]={ 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, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841, 0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40, 0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41, 0x1400, 0xD4C1, 0xD581, 0x1540, 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, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41, 0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0