C51串口输出输入函数.doc

C51串口输出输入函数作者：佚名 文章来源：网络收集 点击数： 230 更新时间：2007-11-29 22:30:09 *-ComFun.c C51串口输出输入函数外部声明 ComFun.hCopyright 2003 All rights reserved. 明浩 E-mail: -*/#include /串口初始化 晶振为11.0592M方式1 波特率30057600void InitCom(unsigned char BaudRate)unsigned char THTL;switch (BaudRate)case 1: THTL = 64; break; /波特率300case 2: THTL = 160; break; /600case 3: THTL = 208; break; /1200case 4: THTL = 232; break; /2400case 5: THTL = 244; break; /4800case 6: THTL = 250; break; /9600case 7: THTL = 253; break; /19200case 8: THTL = 255; break; /57600default: THTL = 208;SCON = 0x50; /串口方式1,允许接收TMOD = 0x20; /定时器1定时方式2TCON = 0x40; /设定时器1开始计数TH1 = THTL;TL1 = THTL;PCON = 0x80; /波特率加倍控制,SMOD位RI = 0; /清收发标志TI = 0;TR1 = 1; /启动定时器/向串口输出一个字符(非中断方式)void ComOutChar(unsigned char OutData)SBUF = OutData; /输出字符while(!TI); /空语句判断字符是否发完TI = 0; /清TI/向串口输出一个回车换行void ComOutEnter(void)SBUF = 0x00;while(!TI);TI = 0;SBUF = 0x0A;while(!TI);TI = 0;/向串口输出一个字符串（非中断方式）void ComOutStr(unsigned char *Str)while(*Str != 0x00) /判断是否到了字符串的尾部SBUF = *Str; /输出字符while(!TI); /空语句判断字符是否发完TI = 0; /清TIStr+; /字符串指针加一/从串口接收一个字符(非中断方式)unsigned char ComInChar()unsigned char InData;while(!RI); /空语句判断字符是否收完InData = SBUF; /保存COM缓冲字符RI = 0; /清RIreturn (InData); /返回收到的字符/从串口接收一个定长字符串(非中断方式,只用于字符需有一个的idata字符串数组)/如unsigned char *Str;/unsigned char i=abcd;/InHandStr = &i;void ComInStr(unsigned char *Str)while(*Str != 0x00) /判断是否到了字