zlg7289ok.c

键盘显示芯片ZLG7289的51驱动程序

#include<reg52.h>


sbit dio=P0^2;
sbit clk=P0^1;
sbit CS_7289=P0^0;

unsigned char DisBuffer[8];


void delay(unsigned int i)
{
	while(i--);
}
//发送8位数据
void SendByte(unsigned char dat)
{
	 unsigned char i;
	 //CS_7289=0;
	 		 
	 for(i=0;i<8;i++)
	 {
	 	
		if(dat&0x80)
		{
			dio=1;
		}else
			{
			 dio=0;
			}
		clk=1;
		delay(3);
		clk=0; 
		dat<<=1;
	 }
	 dio=0;
	 //CS_7289=1;
}
//发送纯命令
void SendCom(unsigned char com)
{
	  CS_7289=0;
	  delay(1);
	  SendByte(com);
	  CS_7289=0;
}
//发送带数据的命令
void SendComData(unsigned char com,unsigned char dat)
{
	  CS_7289=0;
	  delay(1);
	  SendByte(com);
	  SendByte(dat);
	  CS_7289=1;	
} 
unsigned char ReadKey(void)
{
	unsigned char i;
	unsigned char key;
	CS_7289=0;
	SendByte(0x15);
	for(i=0;i<8;i++)
	{
		key<<=1;
		clk=0;
		delay(1);
		clk=1;
		delay(1);
		key |= dio;
	}
	return key;
}  
//led数码管位置,dat显示数据
void ZLG7289Dis(unsigned char led,unsigned char dat)
{

	 SendComData(0x87-led,dat);
}
//消隐
void ZLG7289DisOFF(unsigned char led)
{
	//SendComData(0x98,0x80>>led); //方式0
	SendComData(0xcf,0x80>>led);  //方式1
}
//点亮数码管的小数点
void ZLG7289DP(unsigned char led)
{		
	SendComData(0xe0,0x3f-led*8);
}
//小数点关闭
void ZLG7289DP_OFF(unsigned char led)
{		
	SendComData(0xc0,0x3f-led*8);
}
//数码管闪烁
void ZLG7289Flash(unsigned char led)
{
	 SendComData(0x88,0x80>>led);
}
void ZLG7289Reset(void)
{
	SendCom(0xa4);
}
void ZLG7289MOVL(void)
{
	SendCom(0xa1);
}

void ZLGDIS(void)
{
	unsigned char i;

	ZLG7289Reset();
	for(i=0;i<8;i++)
	{
		if(DisBuffer[i]>=0 &&DisBuffer[i]<=9)
		{
			ZLG7289Dis(i,DisBuffer[i]);
		}else if(DisBuffer[i]>=10 && DisBuffer[i]<=19)
				{	
					ZLG7289Dis(i,DisBuffer[i]-10);
					ZLG7289DP(i); //小数
				 }	else ZLG7289DisOFF(i);		
	} 

}
main()
{
	unsigned int i;
	unsigned char keyv;
	delay(1000);
	ZLG7289Reset();
	DisBuffer[0]=22;
	DisBuffer[1]=22;
	DisBuffer[2]=22;
	DisBuffer[3]=22;
	DisBuffer[4]=22;
	DisBuffer[5]=22;
	DisBuffer[6]=50;
	DisBuffer[7]=40;
	
	while(1)
	{
		for(i=0;i<65535;i++);
		keyv=ReadKey();
		DisBuffer[1]=(keyv/100)%10;
		DisBuffer[2]=(keyv/10)%10;
		DisBuffer[3]=keyv%10;
		ZLGDIS();
				
	}
}