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C51編程:快幫幫我呀 [lsp9672] [50次] 01-12-28 上午 09:23:23
各位大蝦好，小生最近急需要使用一個(gè)C51的單片機(jī)底層串口程序，對(duì)這個(gè)串口程序的要求
是一個(gè)獨(dú)立的模塊。因?yàn)槲乙堰@個(gè)串口程序襄入到我的程序里面，通過(guò)PC機(jī)來(lái)監(jiān)視程序運(yùn)
行中一些標(biāo)志和變量的變化，不知道在那里能找到這樣的串口程序呢？？？ 

too easy [程咬金] [36次] 01-12-28 上午 11:13:57 
/**
*    Program Name: ser_int.c
*
*    Creation Date:    10.25.2001
*
*    Programmers:  Liu Limin
*
*    Modifications:
*
*    Comments:    ...
*
*    Copyright (c) 2001 by CoreLogic Communication, INC.
*
**/

#include <reg52.h>
#include <stdio.h>
#include "ser_int.h"

void SerInitialize() 
{
    SerFlags = 0;

    FlagTransIdle = 1;
    FlagCvtInCR = 1;         // want to turn CRs into LFs
    RR_iHead = RR_iTail = RR_cLev = RR_cMax = 0;
    TR_iHead = TR_iTail = TR_cLev = TR_cMax = 0;
    UnGotCh = -1;
// 
//--- set up Timer 1 to produce serial rate 
    T2CON = 0x30;
//    T2MOD = 0x00;

    SCON = 0x50;
    PCON |= 0x00;
    RCAP2H = 0xFF;
    RCAP2L = 0xDC;
    TR2 = 1;
 //   ET2 = 1;
    ES = 1;
    EA = 1;
}

//---------------------------------------------------------------------------
// Serial interrupt handler 

void SerInt() interrupt 4 using 1
{
    if(RI) {
        if(RR_cLev<INRINGSIZE) {
            RRing[RR_iHead] = SBUF;
            RR_iHead++;
            RR_cLev++;
            if(RR_iHead==INRINGSIZE) RR_iHead = 0;
        }
        RI = 0;
    }
    if(TI) {
        if(TR_cLev) {
            SBUF = TRing[TR_iTail];
            TR_cLev--;
            TR_iTail++;
            if(TR_iTail==OUTRINGSIZE) TR_iTail = 0;
        } else FlagTransIdle = 1;
        TI = 0;
    }
}

//---------------------------------------------------------------------------
// Send character to ..... 

void putch(unsigned char TransChar)
{
    putc(TransChar);
    if(TransChar=='\n') putc('\r');
}

unsigned char putc(unsigned char TransChar)
{
    while(TR_cLev>=OUTRINGSIZE);     
    ES = 0;
    TRing[TR_iHead] = TransChar;     
    TR_iHead++;                      
    TR_cLev++;
    if(TR_iHead==OUTRINGSIZE) TR_iHead = 0;
    if(FlagTransIdle) {
        FlagTransIdle = 0;              
        TI = 1;
    }
    ES = 1;
    return(TransChar);
}

unsigned char chkch()
{
    return(RR_cLev);
}

//---------------------------------------------------------------------------
// Wait for the serial transmitter to go idle 

void SerWaitOutDone()
{
    while(TR_cLev);
    while(!FlagTransIdle);
} 

//---------------------------------------------------------------------------
// Flush the input buffer 
// Returns number of chars flushed 

void SerFlushIn() 
{
    ES = 0;
    RR_iTail = 0;
    RR_iHead = 0;
    RR_cLev = 0;
    ES = 1;
}

//---------------------------------------------------------------------------
// Get character from ....

char getch()
{
    int RetVal;

    ES = 0;
    if(RR_cLev) {
        RetVal = RRing[RR_iTail];
        if(RetVal=='\r') RetVal = '\n';
        RR_iTail++;
        RR_cLev--;
        if(RR_iTail==INRINGSIZE) RR_iTail = 0;
    } else RetVal = -1;
    ES = 1;
    return(RetVal);
}

//---------------------------------------------------------------------------
// Send string to ........
// putstr(char *pString); 

void putstr(unsigned char *pstring)
{
    while(*pstring) {
        putch(*pstring);
        pstring++;
    }
}

void main(void)
{
    unsigned int ch = 0;
  //  unsigned char char_cnt = 0;

    SerFlushIn();
    SerInitialize();
    for(;;) {
    
        if(chkch()) {
            ch = getch();
        }
        if(ch) {
            putch(ch);
           // char_cnt ++;
        }
/*        if(!(char_cnt % 40)) {
            char_cnt = 0;
            putstr("\n\r");
        }
     */ 
  //   for(ch = 0; ch < 0x3fff; ch ++);
    //    putstr("Calling Number : 5551212 !!!\n\r");
        //SerWaitOutDone();
    }
}


你有與這個(gè)程序配套的PC端的程序嗎？？ [lsp9672] [2次] 01-12-28 下午 12:01:08 
先謝謝你，你有與這個(gè)程序配套的PC端的程序嗎？？我在PC端怎么觀察我要監(jiān)視的對(duì)象
呢？？ 
 

 
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