main.c

485.rar

#include <AT892051.h>
#include <intrins.h>
#include "LCD1602.h"

#define uchar unsigned char
#define uint unsigned int

#define MYADD 0x02
#define _ERR_ 0xff
#define _SUCC_ 0xfe

sbit REDE = P3^4;
uchar buf[10];

void delay(uint t)
{
  for(;t>0;t--);
}

uchar Rec_date(uchar *buf)
{
	uchar len;
	uchar ecc;
	uchar tmp;
	uchar i;
	REDE = 0;
	RI = 0;
	while(!RI);
	if(RB8 == 1)
		return 0xfe;
	len = SBUF;
	RI = 0;
	ecc = len;
	for(i=0;i<len;i++)
	{
		while(!RI);
		if(RB8 == 1)
		return 0xfe;
		*buf = SBUF;
		RI = 0;
		ecc = ecc^(*buf);
		buf++;
	}
	*buf =	'\0';
	while(!RI);
	if(RB8 == 1)
		return 0xfe;
	tmp = SBUF;
	RI = 0;	
	ecc = tmp^ecc;
	if(ecc != 0)
	{
		*(buf-len) = '\0';
		REDE = 1;
		TI = 0;
		TB8 = 0;
		SBUF = _ERR_;
		while(!TI);
		TI = 0;
		REDE = 0;
		return 0xff;
	}
	REDE = 1;
	TI = 0;
	TB8 = 0;
	SBUF = _SUCC_;
	while(!TI);
	TI = 0;
	REDE = 0;
	return 0;
}

void serial_RI()interrupt 4
{
	uchar tmp;
	tmp = 0;
	while(tmp != MYADD)
	{
		while(!RI);
		tmp = SBUF;
		RI = 0;
		
	}
	delay(2000);	
	REDE = 1;
	TI = 0;
	TB8 = 0;
	SBUF = MYADD;
	while(!TI);
	TI = 0;
	REDE = 0;
	SM2 = 0;
	tmp = 0xff;
	while(tmp == 0xff)
	{
		tmp = Rec_date(buf);	
	}
	if(tmp == 0xfe)
		SM2 = 1;
	wstr(buf);
}

void init()
{
	delay(10);   //延时等待复位
	wcmd(0x38); //设置为8总线16*2，5*7点阵
	wcmd(0x01); //清屏幕
	wcmd(0x06); //光标移动，显示区不移动
	wcmd(0x0f); //开显示，光标闪烁
}

void main()
{
	init();
	wstr("fenj2");
	loc(2,1);
	SCON=0xb0;
	PCON = 0x80;
	ES=1;
	EA=1;
	REDE = 0;
	while(1);
}