tecclockzhicuankou.c

采用C语言编程

//串口的初始化程序
#define uchar unsigned char 
#define uint unsigned int

#include "public.h"
#include "reg52.h"
#include "stdio.h"
#include "def.h"
#define PUBLIC_GLOBALS 

uchar code menu[] =
   "\n"
   "+***************** REMOTE MEASUREMENT RECORDER *****************+\n"
   "| This program is a simple Measurement Recorder. It is based on |\n"
   "| the MCU51 and records the state of time                       |\n"
   "+ command -+ syntax -----+ function ----------------------------+\n"
   "| autohor  | a           | read author name                     |\n"
   "| Time     | t           | display time                         |\n"
   "+----------+-------------+--------------------------------------+\n";

void uart0int()
{
	TMOD |= 0x20;
	TH1 = 0xf3;
	TL1 = 0xf3;
	EA = 1;
	ES = 1;
	TR1 = 1;
	SCON = 0x50;

}

void putchar1(uchar ch)
{
	if(ch == LF)
	{
		SBUF = CR;
		while(!TI);
		TI = 0;
	}
	
	SBUF = ch;
	while(!TI);
	TI = 0;
}


void uartsendstr(uchar *sp)
{
	do
	{
		if(*sp != '\n')
		{
			SBUF = *sp;
			sp ++;
			while(!TI);
			TI = 0;	
		}
		else
		{
			SBUF = 0x0d;
			sp ++;
			while(!TI);
			TI = 0;
			SBUF = 0x0a;
			while(!TI);
			TI = 0;
		}
	}
	while(*sp != '\0');
}

void com(void) interrupt 4 using 1
{
	char temp;
	uchar c;
	if(RI)
	{
		RI = 0;
		c = SBUF;
		if(gTimeDisplay == FALSE)
		{
			if((gCommandDeal == FALSE)&&(gUart0RecCount < (MAXCOMMLENGTH - 1)))
			{
				if(c == CR)
				{
					c = LF;
					gCommandDeal = TURE;
				}
				if(c == BACKSPACE || c == DEL)
				{
					if(gUart0RecCount != 0)
					{
				        gUart0RecCount--;                              /* decrement count                */
				        putchar1 (BACKSPACE);                /* echo backspace                 */
				        putchar1 (' ');
				        putchar1 (BACKSPACE);
	   				}
				}
				else if(c != CNTLQ && c != CNTLS)
				{
					gUart0Buf[gUart0RecCount]=c;
					gUart0RecCount++;
					putchar1(c);
 				}
			}
			else
 		    {
				temp = SBUF;
			}
			if(c == LF)
			{
				gUart0RecCount --;
				gUart0Buf[gUart0RecCount] = 0;
				gCommandDeal = TURE;				
			}
			if (gUart0RecCount >= (MAXCOMMLENGTH-2))
			{
				gUart0RecCount --;
				gUart0Buf[gUart0RecCount] = 0;
				gCommandDeal = TURE;

			}

		}
		else
		{
			if(c == ESC)
			{
				SBUF = CR;
				while(!TI);
				TI = 0;
				SBUF = LF;
				while(!TI);
				TI = 0;
				gTimeDisplay = FALSE;
				gCommandDeal=FALSE;
				gUart0RecCount=0;
			}

		}

	}
}