日历时钟显示

单片机课程设计

姓名：殷新宇 学号：3101109048 班级：J通信1002 指导老师：申屠浩 日历时钟显示 一．设计要求 利用C51单片机在LED显示屏上显示时间，日历以及闹钟，并且能够调节时钟，日历以及闹钟；当时间到达闹钟时间进行闹钟提示。

二．设计任务 显示时钟的时，分，秒位；显示日历的年，月，日；能够设置闹铃，并在达到闹铃时刻有字幕提示

三．设计思想 利用延时进行编译时钟秒位走动，根据秒位的走动，进行判断分钟，小时，日期，月份，年份的走动；通过键位输入函数，可以将按键的值输入到LED显示屏上，再通过判断语句将输入的值有选择性的输入到时间或者日历或者闹钟上；通过LED显示函数，在LED函数中添加一个判断语句，让时钟和闹钟时间相等时在LED上显示汉字提醒，并添加在数码管上显示数字函数。

四．程序代码 INIT文件 #include "c8051f020.h" #include

void Delay1us(unsigned char us) { while (us) { _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); --us; } } void SYSCLK_Init (void) { int i; // delay counter OSCXCN = 0x67; // start external oscillator with // 18.432MHz crystal for (i=0; i < 256; i++) ; // Wait for osc. to start up while (!(OSCXCN & 0x80)) ; // Wait for crystal osc. to settle OSCICN = 0x88; // select external oscillator as SYSCLK // source and enable missing clock // detector // OSCICN = 0x07; //interal 16MHZ } #define PRT0CF P0MDOUT #define PRT1CF P1MDOUT #define PRT2CF P2MDOUT

void PORT_Init (void) { XBR0 = 0x07; // Enable SMBus, SPI0, and UART0 XBR1 = 0x00; XBR2 = 0x44; // Enable crossbar and weak pull-ups EMI0CF = 0x27; EMI0TC = 0x21; P74OUT = 0xFF; P0MDOUT = 0x15;

P1MDOUT |= 0x3C; //P1.2-P1.5推挽输出 P1 &= 0xc3; //P1.2-P1.5=0 }

void SPI0_Init (void) { SPI0CFG = 0x07; // data sampled on 1st SCK rising edge // 8-bit data words SPI0CFG|=0xC0; //CKPOL =1;

SPI0CN = 0x03; // Master mode; SPI enabled; flags // cleared SPI0CKR = SYSCLK/2/8000000-1; // SPI clock <= 8MHz (limited by // EEPROM spec.) }

unsigned char Count1ms; short countsec=0; char sec=55; char min=59; char hor=23; char day=31; char mou=7; int year=2013; char s=0; char m=0; char h=0; void Timer0_Init (void) { CKCON|=0x8; TMOD|=0x1; //16Bit Count1ms=10; TR0 = 0; // STOP Timer0 TH0 = (-SYSCLK/1000) >> 8; // set Timer0 to overflow in 1ms TL0 = -SYSCLK/1000; TR0 = 1; // START Timer0 IE|= 0x2; }

void Timer0_ISR (void) interrupt 1 //1ms { TH0 = (-SYSCLK/1000) >> 8; TL0 = -SYSCLK/1000; if (Count1ms) Count1ms--; countsec++; if (countsec==1000) { countsec=0; sec++; if(sec==60) { sec=0; min++; if(min==60) { min=0; hor++; if(hor==24) { hor=0; if(mou==1||mou==3||mou==5||mou==7||mou==8||mou==10||mou==12) { if(day==31) { day=0; if(mou==12) { day=1; mou=1; year++; } else mou++; } else day++; } if(mou==4||mou==6||mou==9||mou==11) { if(day==30) { day=1; mou++; } else day++; } if(mou==2) { if((year%4==0)&(year%100!=0)||(year%400==0)) { if(day==29) { day=1; mou++; } else day++; } else if(day==28) { day=1; mou++; } else day++;

} if(mou==8) { if(day==0) day++; }

} } } } } void Delay1ms(unsigned char T) { Count1ms=T; while (Count1ms); }

void Delay1s(unsigned char T) { while (T) { Delay1ms(200); Delay1ms(200); Delay1ms(200); Delay1ms(200); Delay1ms(200); T--; } }

void Test7279(bit LoopFlag); void TestLCD(void); void DispLED(char *buf); void TestI2C (void); extern void run7279(); extern void runI2c();

void main (void) { WDTCN = 0xde; WDTCN = 0xad; //关看门狗 SYSCLK_Init (); //初始化时钟 Timer0_Init(); //初始化定时器 PORT_Init (); //初始化IO口 SPI0_Init (); //初始化SPI0

CPT1CN|=0x80; //使能比较器1 REF0CN = 0x03; //使能片内参考电压 DAC0CN |= 0x80; //使能DAC0 DAC0H=0; DAC0L=0;

EA=1; //开中断 //Test7279(0); TestI2C(); for( ; ; ) { run7279(); runI2c(); } // TestLCD(); }

I2C文件 #include // SFR declarations

//------------------------------------------------------------------------------------ // Global CONSTANTS //------------------------------------------------------------------------------------

#define WRITE 0x00 // SMBus WRITE command #define READ 0x01 // SMBus READ command

// Device addresses (7 bits, lsb is a don't care) #define CLOCK3530_ADDRESS_RESET 0x60 //1 ack #define CLOCK3530_ADDRESS_STATUS 0x62 //2 ack #define CLOCK3530_ADDRESS_DATEHOUR 0x64 //8 ack year month day week hour minute second #define CLOCK3530_ADDRESS_HOUR 0x66 //4 ack hour minute second #define CLOCK3530_ADDRESS_INT1 0x68 //3 ack #define CLOCK3530_ADDRESS_INT2 0x6A //3 ack

union { unsigned char ClockString[7]; struct RealClock { unsigned char Year,Month,Day,Week,Hour,Minute,Second; } RT; } RealTime;

// SMBus states: // MT = Master Transmitter // MR = Master Receiver #define SMB_BUS_ERROR 0x00 // (all modes) BUS ERROR #define SMB_START 0x08 // (MT & MR) START transmitted #define SMB_RP_START 0x10 // (MT & MR) repeated START #define SMB_MTADDACK 0x18 // (MT) Slave address + W transmitted; // ACK received #define SMB_MTADDNACK 0x20 // (MT) Slave address + W transmitted; // NACK received