led.c

基于51单片机和RTL8019以太网控制器的嵌入式以太网控制程序。

/*============================================================
功能：使用TM1623数码管显示演示.
作者: Mingtree	[e-mail]   http://www.mcu123.com


==============================================================*/

#include <REG52.H>
//TM1623显示控制口

sbit DOUT_LED=P1^5;
sbit DIN_LED=P1^2;
sbit CS_LED=P1^0;
sbit CLK_LED=P1^4;


unsigned char Disp_Buf[6];

/*;========================================================================================                10    
 	            ;		          0    1    2    3	  4    5	6    7    8	   9    A	B    C    D    E     F   */
unsigned  char  code D_Code[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0xF7,0x77,0xB7,0xC7,0xE2,0xD5,0xff};/*显示码表*/

//延时
void dly(unsigned int i)
{
 while (i--)
 {
 ;
 }      ;
}

//输出一个字节
void Sent_Byte(unsigned char wrdata){
 unsigned char k;
CLK_LED=0;

 for(k=0;k<8;k++){
 if((wrdata & 0x01)==0){
  DIN_LED=0;
  }        
  else{
  DIN_LED=1;
  }
  wrdata>>=1;
  CLK_LED=1;  
  
  CLK_LED=0;
    
 }
 }

 
/*//显示程序
void disp(void)
 {
 CLK_LED0;
 CS_LED0;
 Sent_Byte(0xc1);
 CS_LED1;
 CLK_LED0;
 CS_LED0;
 Sent_Byte(0xf8);
 Sent_Byte(0x88);
 Sent_Byte(0x61);
 CS_LED1;
 }
 */
void Disp_Led(void)
{
 	CS_LED=0;
	Sent_Byte(0x01);//显示模式5位13段
	CS_LED=1;
	
	CS_LED=0;
	Sent_Byte(0x40);//设置数据
	CS_LED=1;
	
	CS_LED=0;
	Sent_Byte(0xc0);//设置地址
	Sent_Byte(D_Code[Disp_Buf[0]]);//1
	Sent_Byte(0x00);
	Sent_Byte(D_Code[Disp_Buf[1]]);//2
	Sent_Byte(0x00);
	Sent_Byte(D_Code[Disp_Buf[2]]);//3
	Sent_Byte(0x00);
	Sent_Byte(D_Code[Disp_Buf[3]]);//4
	Sent_Byte(0x00);
	Sent_Byte(D_Code[Disp_Buf[4]]);//5
	//Sent_Byte(0x00);

	CS_LED=1;
	CS_LED=0;
	Sent_Byte(0x8a);//控制显示
	CS_LED=1;
}

void Fill_DispBuf(void)
{
 Disp_Buf[0]=1;
 Disp_Buf[1]=1;		   
 Disp_Buf[2]=8;
 Disp_Buf[3]=8;
 Disp_Buf[4]=0x10;
}


unsigned char Scan_Key(void)//按键读数据子程序
{
	unsigned char key_i,key_temp;//key_read;
	key_temp=0;
	for(key_i=0;key_i<8;key_i++)
	{
		key_temp>>=1;
		CLK_LED=0;//下降沿输出数据
		
		if(DOUT_LED!=0)
		key_temp=key_temp|0x80;
		//key_read=key_temp;
		CLK_LED=1;
	
		
	}
	return key_temp;
}

unsigned char Get_Key(void)//按键处理子程序,返回按键编号
{
	unsigned char K1,K2;
	CS_LED=0;
	Sent_Byte(0x42);//读键扫数据指令
	K1=Scan_Key()&0x1b;
	K2=Scan_Key()&0x1b;
	CS_LED=1;					
	if(K1!=0x00)
	{
		switch(K1)
		{
			case 0x01:
				return 0x01;
				break;
			case 0x02:
				return 0x02;
				break;
			case 0x08:
				return 0x03;
				break;
			case 0x10:
				return 0x04;
				break;
			default:
				return 0x00;
				break;
		}
	}
	if(K2!=0x00)
	{
		switch(K2)
		{
			case 0x01:
				return 0x05;
				break;
			case 0x02:
				return 0x06;
				break;
			case 0x08:
				return 0x07;
				break;
			case 0x10:
				return 0x08;
				break;
			default:
				return 0x00;
				break;
		}
	}
	return 0x00;
}

void Disp_All(void)
{
 Fill_DispBuf();
 Disp_Buf[3]=Get_Key();
 Disp_Led();
}

void Disp_buf(unsigned char xdata * buf)
{
 Disp_Buf[0]=buf[0]-0x30;
 Disp_Buf[1]=buf[1]-0x30;		   
 Disp_Buf[2]=buf[2]-0x30;
 Disp_Buf[3]=buf[3]-0x30;
 Disp_Buf[4]=0x10;
 Disp_Led();

}