sendone.c

SendOneCHAR源程序解决的是单片机通过串口发送一个(单个)字符给主机的程序设计.

#define _SENDONE_C_
#include "reg51.h"
#include "intrins.h"
#include "sendone.h"

void SERIAL_ROUTING() interrupt 4
{
//输入程序代码
   if( TI )
	{
		TI = 0;
		if ( SendNumber )
		{
			SendNumber--;
			SBUF = KeyValue;
		}
	}
}

void INIT_SERIAL()
{
	SCON = 0x40;
	PCON &= 0x7F;
	TH1 = 0xFD;
	TL1 = 0xFD;
	TMOD &= 0x0F;
	TMOD |= 0x20;
	TR1 = 1;
	IP &= 0xEF;
	IE |= 0x10;
}

void InitInterrupt()
{
	INIT_SERIAL();
	IE |= 0x80;

	LED_GREEN = LOW;

	Speaker();
	Delay_Nms( 20 );

	Speaker();
	Delay_Nms( 20 );

	Speaker();
	Delay_Nms( 20 );

	LED_GREEN = HIGH;
}

void main()
{
	unsigned char i;
	unsigned char j;

	InitInterrupt();
//输入程序代码

    while ( 1 )
	{
		for ( i = 0x00; i < 0x0a; i++ )
		{
			SendNumber = 0x01;
			KeyValue   = KeyboardValue[i];
			TI =1;
			j = 0x00;
			while( --j )
			{
			    NOP;
				NOP;
			}
		}
		while(1);
	}
}

void Speaker()
{
	unsigned char i = 0x00, j = 0x00;
	
	for (; i < 0x80; i++ )
	{
		SOUND = HIGH;
		for ( j = 0x00; j < 0x40; j++ )
		{
		}
		SOUND = LOW;
		for ( j = 0x00; j < 0x40; j++ )
		{
		}
	}
}

void Delay_Nms( unsigned char x )
{
	unsigned char i = 0x00;
	do 
	{
		i = 0xc8;
		do 
		{
			NOP;
			NOP;
			NOP;
			i = i - 0x01;
		}while( i );
	}while(x--);
}