c8051f020单片机数字时钟.doc

/*本程序只是为了应付课程设计而用据我所知其中至少含有3处bug使用环境c8051f020使用通过*/#include #include /*软件仿真I2C总线与HD7279A连接的两根并行口线*/sbit HD7279_DAT=P17;sbit HD7279_CLK=P16;/*宏定义，HD7279A片选信号、数据信号和时钟信号定义*/#define NOSELECT7279 P5 |= 0x80 /P57接片选信号，选种#define SELECT7279 P5 &= (0x80) /未选种#define Set7279DAT HD7279_DAT=1 /数据线置1#define Clr7279DAT HD7279_DAT=0 /数据线置0#define Set7279CLK HD7279_CLK=1 /时钟高电平#define Clr7279CLK HD7279_CLK=0 /时钟底电平unsigned char Count1ms;unsigned char xdata NowTime3; /当前时间，用于当前时间的设置unsigned char xdata HourH,HourL,MinuteH,MinuteL,SecondH,SecondL;unsigned char xdata mHourH,mHourL,mMinuteH,mMinuteL,mSecondH,mSecondL;unsigned char xdata setHourH,setHourL,setMinuteH,setMinuteL,setSecondH,setSecondL;/*对所调用其它文件中函数的声明*/void Delay1ms(unsigned char T); /延时T毫秒void Delay1s(unsigned char T); /延时T秒void Delay1us(unsigned char T); /延时T微秒/*仿真I2C总线时序发送一字节*/void SYSCLK_Init (void) int i; OSCXCN = 0x67; /外部晶振22.1184MHz for (i=0; i 8; /定时1ms的时间常数 TL0 = -SYSCLK/1000; TR0 = 1; /启动T0 IE|= 0x2; /开T0中断/*定时器T0中断服务程序（每隔1ms中断1次） */void Timer0_ISR (void) interrupt 1TH0 = (-SYSCLK/1000) 8; /重新装入初值 TL0 = -SYSCLK/1000;if (Count1ms) Count1ms-; /定时时间减1/*延时Ts（软件实现）*/void Delay1us(unsigned char T)while (T) _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); -T;/*延时Tms（定时器T0实现）*/void Delay1ms(unsigned char T)Count1ms=T; while (Count1ms); /在T0中断服务程序中减1/*延时Ts（定时器T0实现）*/void Delay1s(unsigned char T) while (T)Delay1ms(200);Delay1ms(200);Delay1ms(200);Delay1ms(200);Delay1ms(200);T-;void Send7279Byte(unsigned char ch)char i;SELECT7279; /置CS低电平 Delay1us(50);/延时50for (i=0;i8;i+)if (ch&0x80)/输出1位到HD7279A的DATA端 Set7279DAT;elseClr7279DAT;Set7279CLK;ch=ch1;/待发数据左移 Delay1us(8);Clr7279CLK; Delay1us(8);Clr7279DAT;/发送完毕，DATA端置低，返回 /*仿真I2C总线时序接收一字节*/unsigned char Receive7279Byte(void)unsigned char i,ch=0;Set7279DAT;/DATA端置为高电平（输入状态）Delay1us(50);for (i=0;i8;i+)Set7279CLK;Delay1us(8);ch=ch1;/接收数据左移1位if (HD7279_DAT) ch+=1;/接收1位数据Clr7279CLK;Delay1us(8);Clr7279DAT;/接收完毕，DATA端重新置成低电平(输出状态)return ch;/*让第No(0到5)位LED闪烁*/void FlashLED(unsigned char No)unsigned char i;Send7279Byte(0x88);/发闪烁指令 i=0x01;while (No) /将1移到第No位i=i1;No-;Send7279Byte(i); /0闪烁、1不闪烁NOSELECT7279; /*HD7279A左移命令*/void MoveLeft(void)Send7279Byte(0xA1);/发左移指令 NOSELECT7279; /*采用不译码方式显示时数字0到F的段码*/unsigned char code BdSeg=0x7e,0x30,0x6d,0x79, / 0 1 2 3 0x33,0x5b,0x5f,0x70, / 4 5 6 7 0x7f,0x7b,0x77,0x1f, / 8 9 a b 0x4e,0x3d,0x4f,0x47, / c d e f 0x00,0x01; /*显示指针DispBuf所指6个单元数据，点亮第ShowDot（1到6）个LED的小数点*/void DispLED(unsigned char *DispBuf,unsigned char ShowDot) char i,ch;ShowDot-;for (i=0;i=a) & (ch=A) & (ch=0) & (KeyValue=9) /只接收十进制的0到9 i+;Send7279Byte(0xC8); /发送键码值，按方式1译码下载显示 Send7279Byte(KeyValue);MoveLeft(); /显示并左移一位，仍使低位显示并闪烁。Send7279Byte(0x90); Send7279Byte(0x01); NOSELECT7279; WaitKeyOff();Num*=10; /转换成十进制 Num+=KeyValue; Delay1ms(500); void DispTime(void) Send7279Byte(0x85); /在最高位（第5位）LED显示小时的高位 Send7279Byte(HourH);Send7279Byte(0x84); /在第4位LED显示小时的低位Send7279Byte(HourL);Send7279Byte(0x83); /在第3位LED显示分钟的高位Send7279Byte(MinuteH);Send7279Byte(0x82); /在第2位LED显示分钟的低位Send7279Byte(MinuteL);Send7279Byte(0x81); /在第1位LED显示秒钟的高位Send7279Byte(SecondH);Send7279Byte(0x80); /在第0位LED显示秒钟的低位Send7279Byte(SecondL);void mDispTime(void) Send7279Byte(0x85); /在最高位（第5位）LED显示小时的高位 Send7279Byte(mHourH);Send7279Byte(0x84); /在第4位LED显示小时的低位Send7279Byte(mHourL);Send7279Byte(0x83); /在第3位LED显示分钟的高位Send7279Byte(mMinuteH);Send7279Byte(0x82); /在第2位LED显示分钟的低位Send7279Byte(mMinuteL);Send7279Byte(0x81); /在第1位LED显示秒钟的高位Send7279Byte(mSecondH);Send7279Byte(0x80); /在第0位LED显示秒钟的低位Send7279Byte(mSecondL);void set_time()unsigned long CurrentTime=0;do /从键盘输入时间，格式HHMMSS CurrentTime=InputNum(); DispValue(CurrentTime); NowTime0=(unsigned char)(CurrentTime/100000)4);/时 CurrentTime=CurrentTime%100000;NowTime0=NowTime0|(CurrentTime/10000);CurrentTime=CurrentTime%10000;NowTime1=(unsigned char)(CurrentTime/1000)4);/分 CurrentTime=CurrentTime%1000;NowTime1=NowTime1|(CurrentTime/100);CurrentTime=CurrentTime%100; NowTime2=(unsigned char)(CurrentTime/10)0x24)|(NowTime10x59)|(NowTime20x59); HourH=NowTime0/16;/转换成10进制 HourL=NowTime0%16; MinuteH=NowTime1/16; MinuteL=NowTime1%16; SecondH=NowTime2/16; SecondL=NowTime2%16;unsigned long set_InputNum(void)unsigned long Num=0;unsigned char i=0, KeyValue;int c=0; DispLED( -,0);/输入提示FlashLED(0); /第一位闪烁 while(1) KeyValue=GetKeyValue(); if (i=6) /6位数据输入完，返回 FlashLED(8);/关闪烁 return Num; if(KeyValue=0) & (KeyValue9) SecondH+,SecondL=0; if(SecondH5)SecondH=0,MinuteL+; if (MinuteL9) MinuteH+,MinuteL=0;if(MinuteH5)MinuteH=0,HourL+; if(HourL9) HourH+;HourL=0;if(HourH2) HourH=0;if(HourH=2)&(HourL3)HourH=0;HourL=0;c+;Delay1ms(500);if(c%2=0)SecondL+; void set_ring()unsigned long CurrentTime=0;do /从键盘输入时间，格式HHMMSS CurrentTime=set_InputNum(); DispValue(CurrentTime); NowTime0=(unsigned char)(CurrentTime/100000)4);/时 CurrentTime=CurrentTime%100000;NowTime0=NowTime0|(CurrentTime/10000);CurrentTime=CurrentTime%10000;NowTime1=(unsigned char)(CurrentTime/1000)4);/分 CurrentTime=CurrentTime%1000;NowTime1=NowTime1|(CurrentTime/100);CurrentTime=CurrentTime%100; NowTime2=(unsigned char)(CurrentTime/10)0x24)|(NowTime10x59)|(NowTime20x59); setHourH=NowTime0/16;/转换成10进制setHourL=NowTime0%16; setMinuteH=NowTime1/16; setMinuteL=NowTime1%16; setSecondH=NowTime2/16; setSecondL=NowTime2%16; void m()unsigned long CurrentTime=0;unsigned char control_keyvalue;int ma=0;int a=1; DispValue(CurrentTime); NowTime0=(unsigned char)(CurrentTime/100000)4);/时 CurrentTime=CurrentTime%100000;NowTime0=NowTime0|(CurrentTime/10000);CurrentTime=CurrentTime%10000;NowTime1=(unsigned char)(CurrentTime/1000)4);/分 CurrentTime=CurrentTime%1000;NowTime1=NowTime1|(CurrentTime/100);CurrentTime=CurrentTime%100; NowTime2=(unsigned char)(CurrentTime/10)9) mSecondH+,mSecondL=0; if(mSecondH5)mSecondH=0,mMinuteL+; if (mMinuteL9) mMinuteH+,mMinuteL=0;if(mMinuteH5)mMinuteH=0,mHourL+; if(mHourL9) mHourH+;mHourL=0;if(mHourH2) mHourH=0;if(mHourH=2)&(mHourL3)mHourH=0;mHourL=0; control_keyvalue=GetKeyValue();if(control_keyvalue=14)break;if(control_keyvalue=10)a=-a;if(a=-1&ma%5=0)mSecondL-;mDispTime(); if (SecondL9) SecondH+,SecondL=0; if(SecondH5)SecondH=0,MinuteL+; if (MinuteL9) MinuteH+,MinuteL=0;if(MinuteH5)MinuteH=0,HourL+; if(HourL9) HourH+;HourL=0;if(HourH2) HourH=0;if(HourH=2)&(HourL3)HourH=0;HourL=0;SecondL+;void main(void) unsigned char control_keyvalue;int control_key=1;int a=0;int count; WDTCN = 0xde; /关看门狗 WDTCN = 0xad; SYSCLK_Init(); /初始化系统时钟 PORT_Init(); /初始化I/O口 Timer0_Init(); /初始化定时器 CPT1CN|=0x80; /使能比较器1 ET0 =1; /开定时器0中断 EA=1; /开总体中断 Delay1ms(25); /7279上电复位的延时时间 Send7279Byte(0xA4); /7279复位 set_time(); while(1) Delay1ms(200); a+; if(a%5=0) SecondL+; control_keyvalue=GetKeyValue();if(control_keyvalue=10)SecondH=0;SecondL=0;else if(control_keyvalue=15)set_time(); else if(control_keyvalue=12) count=0;control_key=1;else if(control_keyvalue=11) co