1线通讯协议的c51例子程序.rar_1线_通讯协议

#include <ledtest.h> static int LastDiscrepancy; static int LastFamilyDiscrepancy; static int LastDeviceFlag; static int USpeed = 0; // current 1-Wire Net communication speed static int ULevel = 0; // current 1-Wire Net level uchar ROM_NO[8]; //uchar FamilySN[MAXDEVICES][8]; uchar crc8; ushort utilcrc16; bit c16; static short oddparity[16] = { 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0 }; void main(void) { int y=0; int flag=0; //uchar test; //uchar receive; uchar temp1,temp2; // uchar temp3,temp4; // bit crcbit; ushort lastcrc16; delay(100); led_blink(); Init_Rs232(); delay(500); //init conditional search status while(1) { ow_reset(); write_byte(0xcc); //LSB address write_byte(0x55); //LSB address write_byte(0x07); //MSB address write_byte(0x00); //LSB address if (flag==0) { write_byte(0x76); //MSB address } else{ write_byte(0x56); //MSB address } temp1=read_byte(); temp2=read_byte(); // crcbit=read_bit(); setcrc16(0x0000); // docrc16(0x55); docrc16(0x07); docrc16(0x00); if (flag==1) { docrc16(0x16); } else{ docrc16(0x36); } // read and calculate the read crc docrc16(temp1); lastcrc16 = docrc16(temp2); // crc should now be 0xB001 if (lastcrc16 != 0xB001) { ow_reset(); } else{ } if (first(TRUE)) { if(flag==0) { flag=1; } else{ flag=0; } if(Send_MatchRom()) { write_byte(0x55); //write status write_byte(0x07); //LSB address write_byte(0x00); //MSB address if (flag==1) { write_byte(0x0e); //LSB address } else{ write_byte(0x6d); //LSB address } temp1=read_byte(); temp2=read_byte(); // crcbit=read_bit(); setcrc16(0x0000); // docrc16(0x55); docrc16(0x07); docrc16(0x00); if (flag==1) { docrc16(0x0e); } else{ docrc16(0x6d); } // read and calculate the read crc docrc16(temp1); lastcrc16 = docrc16(temp2); // crc should now be 0xB001 if (lastcrc16 != 0xB001) { ow_reset(); //tx_str("make PIOA high crc error!"); } else{ //tx_str("make PIOA high crc correct!"); } //tx_lfbs(); } } } /*delay(255); tx_str("Pelease input 1 or 2 or 3 or 4 or 5"); tx_lfbs(); tx_str("case '1':Send 1_wire reset"); tx_lfbs(); tx_str("case '2':Performing search rom CODE"); tx_lfbs(); tx_str("case '3':Performing SKIP READ ROM COMMAND"); tx_lfbs(); tx_str("case '4':Performing SKIP WRITE ROM COMMAND"); tx_lfbs(); tx_str("case '5':read status from ds2406!"); tx_lfbs(); tx_str("case '6':write one low bit!"); tx_lfbs(); tx_str("case '7':make PIOA high crc correct!"); tx_lfbs(); while(1) { receive=rx_char(); switch (receive) { case '1': tx_str("Send 1_wire reset"); tx_lfbs(); if (ow_reset()) { tx_str("reset failure!"); tx_lfbs(); } else { tx_str("reset success!"); tx_lfbs(); } break; case '2': tx_str("Performing search rom CODE"); tx_lfbs(); ow_reset(); first(FALSE); if (ROM_NO[0]==0x12) { tx_str("Correct find Ds2406 family ROM code"); tx_lfbs(); } /* tx_str("ROM_NO[0]=18"); tx_lfbs(); for (y=1;y<8;y++) { tx_str("ROM_NO["); tx_char(y+48); tx_str("]="); if (ROM_NO[y]>=128) {tx_char((ROM_NO[y]-80)); tx_str(" (ROM_NO>128)"); } else if (ROM_NO[y]<48) { tx_char((ROM_NO[y]+48)); tx_str(" (ROM_NO<48)"); } else{ tx_char(ROM_NO[y]); } tx_lfbs(); }*/ /* tx_str("Performing send Match Rom"); tx_lfbs(); if(Send_MatchRom()) { write_byte(0x55); //write status write_byte(0x07); //LSB address write_byte(0x00); //MSB address write_byte(0x0e); //LSB address temp1=read_byte(); temp2=read_byte(); // crcbit=read_bit(); setcrc16(0x0000); // docrc16(0x55); docrc16(0x07); docrc16(0x00); docrc16(0x0e); // read and calculate the read crc docrc16(temp1); lastcrc16 = docrc16(temp2); // crc should now be 0xB001 if (lastcrc16 != 0xB001) { ow_reset(); tx_str("make PIOA high crc error!"); } else{ tx_str("make PIOA high crc correct!"); } tx_lfbs(); } break; case '3': tx_str("3:Performing SKIP Read Rom Command"); tx_lfbs(); for (y=0x0a;y<=0x0f;y++) { ow_reset(); write_byte(0xCC); //LSB address write_byte(0xF0); //MSB address write_byte(y); //LSB address write_byte(0x00); //MSB address test=read_byte(); if (test==0xff) { tx_str("read_byte=0xff!"); tx_lfbs(); } else { tx_str("read_byte="); tx_char((test+48)); tx_lfbs(); } } break; case '4': tx_str("4:Performing SKIP Write Rom Command"); tx_lfbs(); for (y=0x0a;y<=0x0f;y++) { ow_reset(); write_byte(0xCC); //LSB address write_byte(0x0F); //MSB address write_byte(y); //LSB address write_byte(0x00); //MSB address write_byte(y); //LSB address temp1=read_byte(); temp2=read_by