合泰单片机驱动MAX7219

#include "HT66F0185.h"



#define uint8 unsigned char

#define uint16 unsigned int



#define CLK_0 _pd1=0

#define CLK_1  _pd1=1

#define LOAD_0 _pd0=0

#define LOAD_1   _pd0=1

#define DIN_0 _pa1=0

#define DIN_1 _pa1=1





#define NoOp 0x00  //??2ù×÷??'??÷



#define Digit0 0x01 // êy??1ü1??'??÷



#define Digit1 0x02 // êy??1ü2??'??÷



#define Digit2 0x03 // êy??1ü3??'??÷



#define Digit3 0x04 // êy??1ü4??'??÷



#define Digit4 0x05 // êy??1ü5??'??÷



#define Digit5 0x06 // êy??1ü6??'??÷



#define Digit6 0x07 // êy??1ü7??'??÷



#define Digit7 0x08 // êy??1ü8??'??÷



#define DecodeMode 0x09  // ò?????ê???'??÷



#define Intensity 0x0a // áá?è??'??÷



#define ScanLimit 0x0b // é¨?è??êy??'??÷



#define ShutDown 0x0c // μí1|o???ê???'??÷



#define DisplayTest 0x0f // ??ê?2aê???'??÷



#define ShutdownMode 0x00 // μí1|o?·?ê?



#define NormalOperation 0x01 // ?y3?2ù×÷·?ê?



#define ScanDigit 0x07 // é¨?è??êyéè??????ê?8??êy??1ü



#define DecodeDigit 0xff // ò???éè????8???ù?aBCD??



#define IntensityGrade 0x0a // áá?è??±eéè??



#define TestMode 0x01 // ??ê?2aê???ê?



#define TextEnd 0x00  // ??ê?2aê??áê??????'?y3?1¤×÷??ê?



/*****************************************************************************



 * Function implementation - global ('extern') and local ('static')



 ******************************************************************************/



uint8 DisBuffer[8]={0,0,0,0,0,0,0,0}; // ??ê??o'???



//******************?óê±toá??**************************************



void delay(uint16 t)



{



uint16 i;



while(t--)



 {



/* ??óú12Mê±?ó?????óê±1ms */



for (i=0;i<36;i++)



{}



 }



}



//*************?òMAX7219D'è?×??ú?¨8????********************



void SendChar (uint8 ch)



{



 uint8 i,temp;



 delay(1);



for (i=0;i<8;i++)



 {



temp=ch&0x80;



ch=ch<<1;



if(temp)



{



DIN_1;



delay(1);



CLK_0;



delay(1);



CLK_1;



delay(1);



}



else



{



DIN_0;



delay(1);



CLK_0;



delay(1);



CLK_1;



delay(1);



}



}



}







//**************?òMAX7219D'è?×??¨16????*****************************



void WriteWord (uint8 addr,uint8 num)



{



 LOAD_0;



 delay(1);



SendChar(addr);



 delay(1);



 SendChar(num);



 delay(1);



 LOAD_1; // ??'????àó|??'??÷



}



//*********************** MAX72193?ê??¯ ******************



void InitDisplay (void)



{



WriteWord (ScanLimit,ScanDigit);// éè??é¨?è???T



WriteWord (DecodeMode,DecodeDigit);// éè??ò?????ê?



WriteWord (Intensity,IntensityGrade); // éè??áá?è



WriteWord (ShutDown,NormalOperation); // éè???a?y3?1¤×÷??ê?







}





void delay_ms(uint16 ms)

{

                //1ms

                GCC_DELAY(2000);

}

void main()

{

        _wdtc=0xa8;

        _pdc=0;

        _pac=0;

        InitDisplay (); // MAX7219???



WriteWord(DisplayTest,TestMode);// ??????,????LED



delay(1500); // ???1.5s



WriteWord (DisplayTest,TextEnd);// ????????



WriteWord (Digit0,0);



 WriteWord (Digit1,1);

WriteWord (Digit2,2);



 WriteWord (Digit3,3);

        while(1)

        {

                

                WriteWord(DisplayTest,TestMode);// ??????,????LED



delay(150); // ???1.5s



WriteWord (DisplayTest,TextEnd);// ????????



WriteWord (Digit0,0);



 WriteWord (Digit1,1);

WriteWord (Digit2,2);



 WriteWord (Digit3,3);





        }

}