master_main.c

51单片机及其C语言程序开发实例光盘资料.rar

#include<reg51.h>

#define  ADDR  0x01
#define  ACK   0xff

unsigned char Dat[]={0,1,2,3,4,5,6,7};

//UART初始化：模式1，8位，9600Bds at 11.059MHz
void InitSerial()
{	
	SCON = 0x50;					  	 // uart in mode 1 (8 bit), REN=1
	TMOD = TMOD | 0x20 ;       // Timer 1 in mode 2 
	TH1  = 0xFD;               // 9600 Bds at 11.059MHz 
	TL1  = 0xFD; 				  	   // 9600 Bds at 11.059MHz
	TR1  = 1; 						     // Timer 1 run
	}
	
void main()
{
	unsigned char temp,i;
	InitSerial();
	while(1)
	{
		TI = 0;
	  	SBUF = ADDR;
		while(!TI);
		while(!RI);
		RI = 0;
		temp = SBUF;
		if(temp == ACK)
		{
			for(i=0;i<8;i++)
			{
				TI = 0;
	  			SBUF = Dat[i];
				while(!TI);
				}
			}	
		}
	}