8_5.zip_adjectiveqsp_at89c51_load78x_多机通信方式0

      #include<reg51.h>
#define uchar unsigned char
#define TR 1
// uchar idata buf[10];// = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a};
uchar buf[10];// = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a};
uchar sum;


void delay(unsigned int i)
{
	unsigned char j;
	for(;i>0;i--)
		for(j = 0;j<125;j++)
			;
}
//已机串口初始化函数
void init(void)
{
	TMOD = 0x20;
	TH1 = 0xf4;
	TL1 = 0xf4;
	PCON = 0x00;
	
	SCON = 0x50;
	TR1 = 1;
}

//已机发送函数
void send (void)
{
	uchar i;
	do{
		//delay(1000);
		SBUF = 0xAA;
		while(TI == 0);
		TI = 0;
		while(RI == 0);
		RI = 0;
	}while(SBUF!=0xbb);
	do{
		sum = 0;
		for(i = 0;i<10;i++)
		{
			//delay(1000);
			SBUF = buf[i];
			sum+=buf[i];
			while(TI==0);
			TI=0;
			
		}
		//delay(1000);
		SBUF = sum;
		while(TI==0);
		TI = 0;
		while(RI==0);
		RI = 0;
		
	}while(SBUF!=0);
	//while(1);
	
}

//甲级接收函数
void receive(void)
{
	uchar i;
	RI = 0;
	while(RI==0);
	RI = 0;
	while(SBUF!=0xaa)
	{
		SBUF=0xff;
		while(TI==0);
		TI = 0;
		delay(1000);
	}
	SBUF=0xBB;
	while(TI==0);
	TI=0;
	
	sum = 0;
	for(i = 0;i<10;i++)
	{
		while(RI==0);
		RI=0;
		buf[i]=SBUF;
		sum+=buf[i];
	}
	while(RI == 0);
	RI=0;
	if(SBUF==sum)
	{
		SBUF=0x00;
	}
	else
	{
		SBUF=0xFF;
		while(TI==0);
		TI=0;
	}
}




void main()
{
	init();
	if (P1^0==0)
	// if (TR == 0)
	{
		send();
	}
	else
	
	{
		receive();
	}
}