mch452.h

PIC单片机控制CH452的数码管显示程序

#ifndef mch452_H
#define mch452_H
/************************************************************
*      注：本头文件实用于CH452的串行显示板，使用时应该      *
*         显示函数：Bit_Display_Num（bite ,data）           *
          Display_Init_Default()系统初始化函数
		  Key_scan()键值
*************************************************************/

#define    LOAD       (RD2)
#define    DIN        (RD1)
#define    DCLK       (RD0)
typedef   int uint8   ;
typedef  long uint16   ;
typedef  long uint32  ;
#define   _SI_H       DIN=1
#define   _SI_L       DIN=0    //定义数据输出端口
#define   _CLK_H      DCLK=1
#define   _CLK_L      DCLK=0  //定义时钟信号口
#define   _LOAD_H     LOAD=1
#define   _LOAD_L     LOAD=0   //定义LOAD口



/****************************
*    端口初始化             *
*****************************/
void Port_init(void)
{ 
   TRISD=0X00;
}
/****************************
*    端口初始化             *
*****************************/

const char DispData[]={0xFC,0x60,0xDA,0xF2,0x66,0xB6,0xBE,0xE0,0xFE,0xF6,
                         0xEE,0x3E,0x9C,0x7A,0x9E,0x8E,0x02}; 
						 /*0,1,2,3,4,5,6,7,8,9,A,b,C,d,E,F,-,*/
const int DispBite[]={0,0xc00,0xd00,0xe00,0xf00,0x800,0x900,0xa00,0xb00};
const int receive_key=0x7ff;

//*     系统函数声明*/
void Display_Init_Default(void); 
void Display_Set(uint8 Mode);
void Send8(uint8  data);
void Send4(uint8  data);
void System_setting(unsigned char Key_IRQ_Out,unsigned char Flash_Speed,
                     unsigned char DIG_Lever,unsigned char Key_Scan_EN,
				     unsigned char Display_EN );
void Bit_Display_Num(uint8 bit0,uint8 buf0,uint8 bit1,uint8 buf1);
void Device_init(void) ;
void Display_Reset(void);
void SET_LOAD(void);
int LedBuffer[8]={0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000};
//******************显示参数定义**************************/
 uint8 Key_IRQ_Out_LowLevel=0;
 uint8 Key_IRQ_Out_LowPulse=1;//按键中断输出方式.....低电平/低电平脉冲

 uint8 Flash_Speed_Sencond=0;
 uint8 Flash_Speed_HalfSencond=1;//数码管闪烁速度.....1秒/0.5秒

 uint8 DIG_Level_Low=0;
 uint8 DIG_Level_High=1;//DIG输出极性.......低电平/高电平

 uint8 Key_Scan_OFF=0;
 uint8 Key_Scan_ON=1;//按键扫描使能.........关/开

 uint8 Display_Off=0;
 uint8 Display_On=1;//显示使能.........关/开

 uint8 Mode_Default=0;
 uint8 Mode_BCD=1;//译码方式选择......默认/BCD


/*--------------------------------------------------------------------------------------------
                                     显示系统默认设置函数
默认参数:
---------------------------------------------------------------------------------------------*/
void Display_Init_Default(void)
{
 Port_init();
 Display_Reset();
 System_setting(Key_IRQ_Out_LowLevel=0,Flash_Speed_HalfSencond,DIG_Level_Low,Key_Scan_OFF,Display_On);
 Display_Set(0);
}
/*--------------------------------------------------------------------------------------------
                                    显示参数设置
---------------------------------------------------------------------------------------------*/
void Display_Set( uint8 Mode)
{   
    uint8  temp1=0;
    temp1=0x080*Mode;
    Send8(temp1);
    Send4(0x05);  
    temp1=0x080*Mode;
    Send8(temp1);
    Send4(0x05);  
    SET_LOAD();
}
void Delay(int time)
{
  int i;
  for (i=0;i<time;i++)
  {;}
}
/****************************
*     系统设置函数          *
*****************************/
void  System_setting(unsigned char Key_IRQ_Out,unsigned char Flash_Speed,
                     unsigned char DIG_Lever,unsigned char Key_Scan_EN,
				     unsigned char Display_EN )
 {
    int temp0=0,temp1=0;
    temp0=0x04;
    temp1=0x020*Key_IRQ_Out+0x010*Flash_Speed+0x008*DIG_Lever+0x002*Key_Scan_EN+0x001*Display_EN;
   
  Send8(temp1);
  Send4(temp0);
  Send8(temp1);
  Send4(temp0);  
  SET_LOAD();
 }
/****************************
*      数据发送函数         *
*****************************/
void Send8(uint8  data)
{
   uint8 i;   
   Port_init();
    _LOAD_H;
   for (i=0;i<8;i++)
   {
      _CLK_H;
      if(data&(0x001<<i))
      {
	    _SI_H;
	  }
	  else 
	  {
	    _SI_L;
	  }
	  _CLK_L;
	  Delay(5);
	  _CLK_H;	
   }
  
}
void Send4(uint8  data)
{
   uint8 i;   
   Port_init();
    _LOAD_H;
   for (i=0;i<4;i++)
   {
      _CLK_H;
      if(data&(0x001<<i))
      {
	    _SI_H;
	  }
	  else 
	  {
	    _SI_L;
	  }
	  _CLK_L;
	  Delay(5);
	  _CLK_H;	
   }
  
}
void SET_LOAD(void)
{
    _LOAD_L;
   _LOAD_H;   
}
/*--------------------------------------------------------------------------------------------
                                    单个位上显示数据
---------------------------------------------------------------------------------------------*/
void Bit_Display_Num(uint8 bit0,uint8 buf0,uint8 bit1,uint8 buf1)
{
    int temp0=0,temp1=0;
    temp0=DispBite[bit0]>>8;
    temp1=DispData[buf0];
    Send8(temp1);
    Send4(temp0);   
    temp0=DispBite[bit1]>>8;
    temp1=DispData[buf1]; 	
 	Send8(temp1);
    Send4(temp0);
    SET_LOAD();
}


void Display_Reset(void)
{
   Send8(0x01);
   Send4(0x02);
   Send8(0x01);
   Send4(0x02);
   SET_LOAD(); 
   
}


void display_8num(uint8 number)
{
Bit_Display_Num(1,number,1,number);
Bit_Display_Num(2,number,2,number);
Bit_Display_Num(3,number,3,number);
Bit_Display_Num(4,number,4,number);
Bit_Display_Num(5,number,5,number);
Bit_Display_Num(6,number,6,number);
Bit_Display_Num(7,number,7,number);
Bit_Display_Num(8,number,8,number);
}


void Device_init(void) 
  {
  Display_Init_Default();
  System_setting(Key_IRQ_Out_LowLevel=0,Flash_Speed_HalfSencond,DIG_Level_Low,Key_Scan_OFF,Display_On);
  Display_Set(0);
  Port_init();
  }
  
  
  
void Getnum(int v)
 {
  int i;
  
 for(i=0;i<9;i++)
   {
    LedBuffer[8-i]=v%10;
	v=v/10;
   }
}


#endif