用PIC16F877的c语言写的一个时闹钟程序

// FileName: Main.c // MCU: Microchip PIC16F877 // Tool: CCS-C compiler // Author: KingEDA, MSN:kingeda@163.com, skype:kingeda, E-mail:kingeda@163.com // Website: http://www.EDAKING.com // Description: // A timer program // Ver 0.1: 2003-03-31, all clock function with date display, 2 way alarm. // Ver 0.2: 2003-05-05, (1) Alarm default is on,modify alarm1 time to 7:00:00, // and alarm2 to 13:30:00. // (2) Backlight will be enabled when alarming. // (3) Automatic adjust day(28,30,31). // (4) Automatic move cursor to next location when set item. // PIN Connection: // RC0~1 : 32768Hz crystal // RC2 : Buzzer // RC3 : LCD Back Light,drive a PNP BJT // RD0~RD7 : to LCD DB0~DB7 // RA0~RA3 : keypad col in // RC4~RC7 : keypad line out // 7 8 9 # // 4 5 6 ↑ // 1 2 3 ↓ // 0 ← → * // RE0 : LCD RS // RE1 : LCD RW // RE2 : LCD E #include "my16f877.h" #device ICD=true //#fuses HS,NOWDT,NOPROTECT,PUT,BROWNOUT #use delay(clock = 24000000) //#use fast_io(C) #use fast_io(E) #define 

lcd_busy (lcd_read_addr()&0x80) == 0x80 #define time_start_addr 0x80+0x04 #define time_hourh_addr time_start_addr #define time_hourl_addr time_start_addr+1 #define time_minuteh_addr time_start_addr+3 #define time_minutel_addr time_start_addr+4 #define time_secondh_addr time_start_addr+6 #define time_secondl_addr time_start_addr+7 #define key_0 0x11 #define key_1 0x21 #define key_2 0x22 #define key_3 0x24 #define key_4 0x41 #define key_5 0x42 #define key_6 0x44 #define key_7 0x81 #define key_8 0x82 #define key_9 0x84 #define key_left 0x12 #define key_right 0x14 #define key_up 0x48 #define key_down 0x28 #define key_mode 0x18 #define key_cancel 0x88 char 

StrPower1[] = " * Power on * "; char StrSetTime[] = " * Adjust time* "; char StrSetDate[] = " * Adjust date* "; char StrAlarm1[] = " * Set alarm 1* "; char StrAlarm2[] = " * Set alarm 2* "; unsigned char PORTC_MAP; #bit BackLightEn = PORTC_MAP.3 unsigned char BackLightTimer; int1 led; #bit lcd_rs = PORTE.0 #bit lcd_rw = PORTE.1 #bit lcd_e = PORTE.2 #byte lcd_bus = PORTD #byte lcd_dir = TRISD #define PWM_on 0x0c #define PWM_off 0x00 #define PWM_period 200 #define PWM_DC 100 unsigned char lcd_addr; unsigned char KeyLine; unsigned char KeyOld; unsigned char KeyNew; struct mTime { unsigned char hourh; // hour,0~23 unsigned char hourl; unsigned char minuteh; // minute,0~59 unsigned char minutel; unsigned char secondh; // second,0~59 unsigned char secondl; }; struct mTime CurrentTime = {1,2,0,0,0,0}; struct mTime AlarmTime1 = {0,7,0,0,0,0}; // 07:00:00 

struct mTime AlarmTime2 = {1,3,3,0,0,0}; // 13:30:00 unsigned char AlarmStatus; #bit Alarm1Enable = AlarmStatus.0 #bit Alarm2Enable = AlarmStatus.1 #bit Alarm1Alarm = AlarmStatus.2 #bit Alarm2Alarm = AlarmStatus.3 unsigned char Alarm1Cnt; // alarm1 second count unsigned char Alarm2Cnt; unsigned char CurrentMode; #define mode_time 0 #define mode_set_time 1 #define mode_set_date 2 #define mode_set_alarm1 3 #define mode_set_alarm2 4 unsigned char adjust_item; struct mDate { unsigned char year1; // unsigned char year2; unsigned char year3; unsigned char year4; unsigned char monthh; unsigned char monthl; unsigned char dayh; unsigned char dayl; }; struct mDate CurrentDate = {2,0,0,3,0,1,0,1}; unsigned char *pStr; // -