📄 c51单片机串行口中断服务程序.htm
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style='font-size:9.0pt;font-family:"\000B "'> <br>
//putchar(uchar c,uchar j);</span><span style='font-size:9.0pt;
font-family:宋体;mso-ascii-font-family:"\000B ";mso-hansi-font-family:"\000B "'>发送一个字节数据的</span><span
lang=EN-US style='font-size:9.0pt;font-family:"\000B "'>asc</span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
mso-hansi-font-family:"\000B "'>码表达方式，需要定义小数点的位置</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'> <br>
//putint(uint ui,uchar j);</span><span style='font-size:9.0pt;
font-family:宋体;mso-ascii-font-family:"\000B ";mso-hansi-font-family:"\000B "'>发送一个整型数据的</span><span
lang=EN-US style='font-size:9.0pt;font-family:"\000B "'>asc</span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
mso-hansi-font-family:"\000B "'>码表达方式，需要定义小数点的位置</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'> <br>
//CR;</span><span style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:
"\000B ";mso-hansi-font-family:"\000B "'>发送一个回车换行</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'> <br>
//************************************************************************* <br>
#include <w77e58.h> //</span><span style='font-size:9.0pt;
font-family:宋体;mso-ascii-font-family:"\000B ";mso-hansi-font-family:"\000B "'>该头文件包括了</span><span
lang=EN-US style='font-size:9.0pt;font-family:"\000B "'>51</span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
mso-hansi-font-family:"\000B "'>，</span><span lang=EN-US style='font-size:9.0pt;
font-family:"\000B "'>52</span><span style='font-size:9.0pt;font-family:宋体;
mso-ascii-font-family:"\000B ";mso-hansi-font-family:"\000B "'>，</span><span
lang=EN-US style='font-size:9.0pt;font-family:"\000B "'>80320</span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
mso-hansi-font-family:"\000B "'>的特殊寄存器，用在</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'>51</span><span style='font-size:
9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";mso-hansi-font-family:"\000B "'>，</span><span
lang=EN-US style='font-size:9.0pt;font-family:"\000B "'>52</span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
mso-hansi-font-family:"\000B "'>上也可</span><span lang=EN-US style='font-size:
9.0pt;font-family:"\000B "'> <br>
#define uchar unsigned <br>
char #define uint unsigned int #define OLEN 64 <br>
/* size of serial transmission buffer */ <br>
idata unsigned char outbuf[OLEN]; <br>
/* storage for transmission buffer */ <br>
unsigned char idata *outlast=outbuf; //</span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
mso-hansi-font-family:"\000B "'>最后由中断传输出去的字节位置</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'> <br>
unsigned char idata *putlast=outbuf; <br>
//</span><span style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:
"\000B ";mso-hansi-font-family:"\000B "'>最后放入发送缓冲区的字节位置</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'> <br>
#define ILEN 2 /* size of serial receiving buffer */ <br>
idata unsigned char inbuf[ILEN]; <br>
unsigned char idata *inlast=inbuf; //</span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
mso-hansi-font-family:"\000B "'>最后由中断进入接收缓冲区的字节位置</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'> unsigned <br>
char idata *getlast=inbuf; //</span><span style='font-size:9.0pt;
font-family:宋体;mso-ascii-font-family:"\000B ";mso-hansi-font-family:"\000B "'>最后取走的字节位置</span><span
lang=EN-US style='font-size:9.0pt;font-family:"\000B "'> bit outbufsign; //</span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
mso-hansi-font-family:"\000B "'>输出缓冲区非空标志</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'> </span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
mso-hansi-font-family:"\000B "'>有</span><span lang=EN-US style='font-size:9.0pt;
font-family:"\000B "'>=1 bit inbufsign; <br>
//</span><span style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:
"\000B ";mso-hansi-font-family:"\000B "'>接收缓冲区非空标志</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'> </span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
mso-hansi-font-family:"\000B "'>有</span><span lang=EN-US style='font-size:9.0pt;
font-family:"\000B "'>=1 <br>
bit inbufful; <br>
//</span><span style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:
"\000B ";mso-hansi-font-family:"\000B "'>输入缓冲区满标志</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'> </span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
mso-hansi-font-family:"\000B "'>满</span><span lang=EN-US style='font-size:9.0pt;
font-family:"\000B "'>=1 <br>
#define CR putstring("\r\n") //CR=</span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
mso-hansi-font-family:"\000B "'>回车换行</span><span lang=EN-US style='font-size:
9.0pt;font-family:"\000B "'> <br>
//***************************** <br>
//</span><span style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:
"\000B ";mso-hansi-font-family:"\000B "'>放入一个字节到发送缓冲区</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'> <br>
putbyte(char c) {uchar i,j; ES=0; <br>
/*</span><span style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:
"\000B ";mso-hansi-font-family:"\000B "'>暂停串行中断，以免数据比较时出错</span><span
lang=EN-US style='font-size:9.0pt;font-family:"\000B "'>? */ <br>
if (outlast==putlast ) <br>
{ i=(0-TH1); <br>
do{i--;j=36; <br>
do {j--;}while(j!=0); <br>
}while(i!=0); <br>
//</span><span style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:
"\000B ";mso-hansi-font-family:"\000B "'>延时一个字节发送时间</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'> <br>
} <br>
*putlast=c; //</span><span style='font-size:9.0pt;font-family:宋体;
mso-ascii-font-family:"\000B ";mso-hansi-font-family:"\000B "'>放字节进入缓冲区</span><span
lang=EN-US style='font-size:9.0pt;font-family:"\000B "'> <br>
putlast++; //</span><span style='font-size:9.0pt;font-family:宋体;
mso-ascii-font-family:"\000B ";mso-hansi-font-family:"\000B "'>发送缓冲区指针加一</span><span
lang=EN-US style='font-size:9.0pt;font-family:"\000B "'> if <br>
(putlast==outbuf+OLEN) putlast=outbuf; //</span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
mso-hansi-font-family:"\000B "'>指针到了顶部换到底部</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'> <br>
if (!outbufsign) <br>
{outbufsign=1;<br>
TI=1; <br>
} //</span><span style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:
"\000B ";mso-hansi-font-family:"\000B "'>缓冲区开始为空置为有，启动发送</span><span
lang=EN-US style='font-size:9.0pt;font-family:"\000B "'> <br>
ES=1; } <br>
//****************************** //</span><span style='font-size:9.0pt;
font-family:宋体;mso-ascii-font-family:"\000B ";mso-hansi-font-family:"\000B "'>放一串数据到发送缓冲区</span><span
lang=EN-US style='font-size:9.0pt;font-family:"\000B "'> <br>
putbytes(unsigned char *outplace,unsigned char j)<br>
{ int i; for(i=0;i<j;i++) <br>
{putbyte(*outplace);<br>
outplace++;<br>
}<br>
}<br>
//******************************<br>
//putchar(uchar c,uchar j);</span><span style='font-size:9.0pt;
font-family:宋体;mso-ascii-font-family:"\000B ";mso-hansi-font-family:"\000B "'>发送一个字节数据的</span><span
lang=EN-US style='font-size:9.0pt;font-family:"\000B "'>asc</span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
mso-hansi-font-family:"\000B "'>码表达方式，需要定义小数点的位置</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'><br>
putchar(uchar c,uchar j)<br>
{uchar idata free[4];uchar data i; <br>
i=0; <br>
free[i++]=(c/100+0x30);<br>
if (j==3) free[i++]='.'; <br>
free[i++]=(c%100)/10+0x30;<br>
if (j==2) free[i++]='.';<br>
if (j==2 && free[i-3]==0x30) free[i-3]=0x20;<br>
free[i++]=(c%10)+0x30;<br>
if (j==1 && free[i-3]==0x30) free[i-3]=0x20;<br>
if (j==1 && free[i-3]==0x20 && free[i-2]==0x30) free[i-2]=0x20; <br>
putbytes(free,i);<br>
}<br>
<br>
//******************************<br>
//putint(uint ui,uchar j);</span><span style='font-size:9.0pt;
font-family:宋体;mso-ascii-font-family:"\000B ";mso-hansi-font-family:"\000B "'>发送一个整型数据的</span><span
lang=EN-US style='font-size:9.0pt;font-family:"\000B "'>asc</span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
mso-hansi-font-family:"\000B "'>码表达方式，需要定义小数点的位置</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'><br>
putint(uint ui,uchar j)<br>
{uchar idata free[6];<br>
uchar data i;<br>
//i=0;<br>
free[i++]=(ui/10000+0x30);<br>
if (j==5) free[i++]='.';<br>
free[i++]=((ui%10000)/1000+0x30);<br>
if (j==4) free[i++]='.';<br>
if (j==4 && free[i-3]==0x30) free[i-3]=0x20;<br>
free[i++]=((ui%1000)/100+0x30);<br>
if (j==3) free[i++]='.';<br>
if (j==3 && free[i-4]==0x30) free[i-4]=0x20;<br>
if (j==3 && free[i-4]==0x20 && free[i-3]==0x30) free[i-3]=0x20;<br>
free[i++]=((ui%100)/10+0x30);<br>
if (j==2) free[i++]='.';<br>
if (j==2 && free[i-5]==0x30) free[i-5]=0x20;<br>
if (j==2 && free[i-5]==0x20 && free[i-4]==0x30) free[i-4]=0x20;<br>
if (j==2 && free[i-5]==0x20 && free[i-4]==0x20 && free[i-3]==0x30) free[i-3]=0x20;<br>
free[i++]=(ui%10+0x30);<br>
if (j==1 && free[i-5]==0x30) free[i-5]=0x20;<br>
if (j==1 && free[i-5]==0x20 && free[i-4]==0x30) free[i-4]=0x20;<br>
if (j==1 && free[i-5]==0x20 && free[i-4]==0x20 && free[i-3]==0x30) free[i-3]=0x20;<br>
if (j==1 && free[i-5]==0x20 && free[i-4]==0x20 && free[i-3]==0x20 && free[i-2]==0x30) free[i-2]=0x20;<br>
putbytes(free,i);<br>
}<br>
//***************************************<br>
//</span><span style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:
"\000B ";mso-hansi-font-family:"\000B "'>发送一个字符串到串口</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'><br>
putstring(unsigned char *puts)<br>
{for (;*puts!=0;puts++) //</span><span style='font-size:
9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";mso-hansi-font-family:"\000B "'>遇到停止符</span><span
lang=EN-US style='font-size:9.0pt;font-family:"\000B "'>0</span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
mso-hansi-font-family:"\000B "'>结束</span><span lang=EN-US style='font-size:
9.0pt;font-family:"\000B "'><br>
putbyte(*puts);<br>
}<br>
//*************************************<br>
//</span><span style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:
"\000B ";mso-hansi-font-family:"\000B "'>发送一个字节的</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'>hex</span><span style='font-size:
9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";mso-hansi-font-family:"\000B "'>码，分成两个字节发。</span><span
lang=EN-US style='font-size:9.0pt;font-family:"\000B "'><br>
unsigned char code hex_[]={"0123456789ABCDEF"}; <br>
puthex(unsigned char c)<br>
{int ch;<br>
ch=(c>>4)&0x0f; putbyte(hex_[ch]); ch=c&0x0f; putbyte(hex_[ch]); } //************************************* <br>
//</span><span style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:
"\000B ";mso-hansi-font-family:"\000B "'>从接收缓冲区取一个</span><span lang=EN-US
style='font-size:9.0pt;font-family:"\000B "'>byte,</span><span
style='font-size:9.0pt;font-family:宋体;mso-ascii-font-family:"\000B ";
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