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〖說(shuō)明〗標準8段數碼管驅動(dòng)程序不用使用者更改另外送多個(gè)時(shí)序函數，還有贈送按鍵掃描及兩鍵驅動(dòng)程序,全中文提示使用更方便快捷 http://www.mcuzb.com 坐標網(wǎng)時(shí)時(shí)更新為您的工作帶來(lái)方便。

默認11.0592Mhz的晶振。

—————————————————————*/

#include

/*--------------------------------------------

調用方式：自行I/O 口定義﹫2001/05/12

函數說(shuō)明：私有函數，各接口定義

--------------------------------------------*/

sbit HD7279_CS=P1^4; // HD7279_CS--P1.4

sbit HD7279_CLK=P1^5; // HD7279_CLK-- P1.5

sbit HD7279_DATA=P1^6; // HD7279_DATA-- P1.2

sbit HD7279_KEY =P1^7; // HD7279_KEY-- P1.3

/*--------------------------------------------

調用方式： HD7279A 各指令定義﹫2001/05/12

函數說(shuō)明：私有函數，接口定義

--------------------------------------------*

/#define HD7279_RESET 0xa4 //復位

#define HD7279_TEST 0xbf //測試

#define HD7279_RLC 0xa3 //循環(huán)左移

#define HD7279_RRC 0xa2 //循環(huán)右移

#define HD7279_RL 0xa1 //左移

#define HD7279_RR 0xa0 //右移

#define HD7279_DECODE0 0x80 //譯碼方式0

#define HD7279_DECODE1 0xc8 //譯碼方式1

#define HD7279_UNDECODE 0x90 //譯碼方式2: 不譯碼

#define HD7279_HIDE 0x98 //消隱

#define HD7279_FLASH 0x88 //閃爍

#define HD7279_SEGON 0xe0 //段亮

#define HD7279_SEGOFF 0xc0 //段滅

#define HD7279_READ 0x15 //讀

/*--------------------------------------------

調用方式： void HD7279_LongDelay(void) 等侍函數﹫2001/05/12

函數說(shuō)明 私有函數，>500ms

--------------------------------------------*/

void HD7279_LongDelay(void)

{

unsigned char i;

for (i=0;i<6;i++);

}

/*--------------------------------------------

調用方式：void HD7279_ShortDelay(void) 等侍函數﹫2001/05/12

函數說(shuō)明：私有函數，=500ms

--------------------------------------------*

/void HD7279_ShortDelay(void)

{;}

/*--------------------------------------------

調用方式：void Delay10ms(unsigned char time) 等侍函數﹫2001/05/12

函數說(shuō)明：私有函數， 6M晶振

--------------------------------------------*/

void Delay10ms(unsigned char time)

{

unsigned char i;

unsigned int j;

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

{

for(j=0;j<931;j++)

{;}

}

}

/*--------------------------------------------

調用方式：void HD7279_ShortDelay(void) 函數﹫2001/05/12

函數說(shuō)明：私有函數，送指令

--------------------------------------------*/

void HD7279_SendByte( unsigned char out_byte)

{

unsigned char i;

HD7279_CS=0;

HD7279_LongDelay();

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

{

if(out_byte&0x80) { HD7279_DATA=1; }

else { HD7279_DATA=0; }

HD7279_CLK=1;

HD7279_ShortDelay();

HD7279_CLK=0;

HD7279_ShortDelay();

out_byte=out_byte<<1;

}

HD7279_DATA=0;

}

/*--------------------------------------------

調用方式：void Write7279(unsigned char command, unsigned char dta) 函數﹫2001/05/12

函數說(shuō)明：私有函數，寫(xiě)函數

--------------------------------------------*/

void Write7279(unsigned char command, unsigned char dta)

{

HD7279_SendByte( command );

HD7279_SendByte( dta );

}

/*--------------------------------------------

調用方式：自定義函數﹫2001/05/12

函數說(shuō)明：私有函數，自行定義

--------------------------------------------*/

#define RunKey 0xXX

#define StopKey 0xXX

/*--------------------------------------------

調用方式：unsigned char HD7279_ReceiveByte(void)函數﹫2001/05/12

函數說(shuō)明：私有函數，接受一個(gè)BYTE函數

--------------------------------------------*/

unsigned char HD7279_ReceiveByte(void)

{

unsigned char i, in_byte;

HD7279_DATA=1;

HD7279_LongDelay();

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

{HD7279_CLK=1;

HD7279_ShortDelay();

in_byte=in_byte<<1;

if(HD7279_DATA) { in_byte=in_byte|0x01; }

HD7279_CLK=0;

HD7279_ShortDelay();

}

HD7279_DATA=0;

return (in_byte);

}

/*--------------------------------------------

調用方式：unsigned char HD7279_GetKey()函數﹫2001/05/12

函數說(shuō)明：私有函數，讀鍵盤(pán)函數

--------------------------------------------*/

unsigned char HD7279_GetKey()

{

unsigned char key;

if(!HD7279_KEY)

{

HD7279_SendByte(HD7279_READ);

key=HD7279_ReceiveByte();

switch( key )

{case RunKey:

case StopKey:

while(!HD7279_KEY);

default: return(0xff);

}

}

return(0xff);

}

/*--------------------------------------------

調用方式：main()函數﹫2001/05/12

函數說(shuō)明：私有函數，例函數

--------------------------------------------*/

main()

{HD7279_SendByte(0xa4);//復位

Write7279(0x80,0)//顯示‘0’

}

參考鏈接：http://www.picavr.com/news/2008-04/5141.htm