max7129.txt

LCD1602.rar

#include <at89x51.h>
#define uchar unsigned char
#define uint  unsigned int

sbit din=P2^0;
sbit clk=P2^1;
sbit load=P2^2;

uchar code dsp[]={0x7e,0x30,0x6d,0x79,0x33,0x5b,0x5f,0x70,0x7f,0x7b};
uchar b[8];

void csh()
{
	load=1;
	clk=1;
	din=1;
}

void write(char com,char da)
{
	uchar temp,i,j;
	load=0;
	clk=0;
	for(i=0;i<8;i++)
		{
		temp=com;
		if((temp&(0x80>>i))!=0)
			din=1;
		else din=0;
		clk=1;
		for(j=0;j<5;j++);
		clk=0;
		}
	 for(i=0;i<8;i++)
		{
		temp=da;
		if((temp&(0x80>>i))!=0)
			din=1;
		else din=0;
		clk=1;
		for(j=0;j<5;j++);
		clk=0;
		}
	 load=1;
}

void check()
{
	uchar i;
	uint  j;
	for(i=0;i<5;i++)
	{
		write(0x0f,0x01);
		for(j=0;j<6000;j++);
		write(0x0f,0x00);
		for(j=0;j<6000;j++);
	}
}

void main()
{
	unsigned int i;
	csh();
	write(0x0c,0x01);//正常工作状态
	write(0x09,0x00);//译码选择，非BCD码
	write(0x0a,0x0f);//亮度调节
	write(0x0b,0x07);//显示位数
/*	write(0x08,dsp[8]);
	write(0x07,dsp[7]);
	write(0x06,dsp[6]);
	write(0x05,dsp[5]);
	write(0x04,dsp[4]);
	write(0x03,dsp[3]);
	write(0x02,dsp[9]);
	write(0x01,dsp[0]);
	check();*/
	while(1)
	{
		write(0x08,dsp[b[7]]);
		write(0x07,dsp[b[6]]);
		write(0x06,dsp[b[5]]);
		write(0x05,dsp[b[4]]);
		write(0x04,dsp[b[3]]);
		write(0x03,dsp[b[2]]);
		write(0x02,dsp[b[1]]);
		write(0x01,dsp[b[0]]);
		b[0]++;
		if (b[0]>9){b[1]++;b[0]=0;}
		if (b[1]>9){b[2]++;b[1]=0;}
		if (b[2]>9){b[3]++;b[2]=0;}
		if (b[3]>9){b[4]++;b[3]=0;}
		if (b[4]>9){b[5]++;b[4]=0;}
		if (b[5]>9){b[6]++;b[5]=0;}
		if (b[6]>9){b[7]++;b[6]=0;}
		if (b[7]>9)
		{
			b[0]=0;b[1]=0;
			b[2]=0;b[3]=0;
			b[4]=0;b[5]=0;
			b[6]=0;b[7]=0;
		}
	for(i=0;i<6000;i++);
	}
}