日历时钟DS12887或146818的C语言源程序.doc

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1、日历时钟DS12887或146818的C语言源程序#defineucharunsignedchar#defineuintunsignedint#include#include#include#include#include#include#include#defineP128870XBYTE[0xa000]#defineP128871XBYTE[0xa001]#defin

2、eP128872XBYTE[0xa002]#defineP128873XBYTE[0xa003]#defineP128874XBYTE[0xa004]#defineP128875XBYTE[0xa005]#defineP128876XBYTE[0xa006]#defineP128877XBYTE[0xa007]#defineP128878XBYTE[0xa008]#defineP128879XBYTE[0xa009]#defineP12887aXBYTE[0xa00a]#defineP12887bX

3、BYTE[0xa00b]#defineP12887cXBYTE[0xa00c]#defineP12887dXBYTE[0xa00d]#defineP12887eXBYTE[0xa00e]#defineP12887fXBYTE[0xa00f]voidsetup12887(uchar*p);voidread12887(uchar*p);voidstart12887(void);voidsetup12887(uchar*p)//设置系统时间{uchari;i=P12887d;P12887a=0x70;P1

4、2887b=0xa2;P128870=*p++;P128871=0xff;P128872=*p++;P128873=0xff;P128874=*p++;P128875=0xff;P128876=*p++;P128877=*p++;P128878=*p++;P128879=*p++;P12887b=0x22;P12887a=0x20;i=P12887c;}voidread12887(uchar*p)//读取系统时间{uchara;do{a=P12887a;}while((a&0x80)==0x80);

5、*p++=P128870;*p++=P128872;*p++=P128874;*p++=P128876;*p++=P128877;*p++=P128878;*p++=P128879;}voidstart12887(void)//启动时钟{uchari;i=P12887d;P12887a=0x70;P12887b=0xa2;P128871=0xff;P128873=0xff;P128875=0xff;P12887b=0x22;P12887a=0x20;i=P12887c;}这些地址，不要直接在代码中使

6、用，应该在前面用EQU/BIT等定义成某个顾名思义的字符串，(0字)坏蛋[11次]2004-1-422:30:09抄来的用的挺好！根据你的需要改改(16006字)gao_bc[18次]2004-1-510:51:21/*************************************************************文件名称：ds12c887.c适用范围：时钟芯片ds12c887的驱动程序*********************************************

7、****************/   #include/*命令常量定义*/#defineCMD_START_DS12C887     0x20            /*开启时钟芯片*/#defineCMD_START_OSCILLATOR0x70            /*开启振荡器，处于抑制状态*/#defineCMD_CLOSE_DS12C887     0x30            /*关掉时钟芯片*//*所有的置位使用或操作，清除使用与操作*/#defineMASK

8、_SETB_SET         0x80            /*禁止刷新*/#defineMASK_CLR_SET         0x7f            /*使能刷新*/#defineMASK_SETB_DM         0x04            /*使用HEX格式*/#defineMASK_CLR_DM             0xfb            /*使用BCD码格式*/#defineMASK_SETB_2412