最终成品（Final product）.docVIP

最终成品（Final product） #includereg52.h// defines some macros that encapsulate the register address in a microcontroller so that you dont need to know the address of a register or you can use it as long as the defined macro name is used. #define uint unsigned int #define uchar unsigned char Sbit en=P2^7; //sbit defines the bit variables of a special function register; sbit is the variable type of the C51 extension. Sbit rs=P2^5; Sbit beep=P2^3; Sbit key1=P1^4; Sbit key2=P1^5; Sbit key3=P1^6; Sbit key4=P1^7; Int flag; Sbit rw=P2^6; Int a; Int b=0; Int c=0; Int d=1; Int e=1; Int f=1; Int g=1; Uchar i; Char shi1=0; Char fen1=0; Char miao1=0; Char shi=0; Char fen=0; Char miao=0; Uchar key1num; Uchar key2num=1; Uchar code WEEK[]= HH-MM-SS; Uchar code HH[]= Ajust+HH; Uchar code SS[]= Ajust+SS; Uchar code MM[]= Ajust+MM; Uchar code HH1[]= Alert Set+HH; Uchar code SS1[]= Alert Set+SS; Uchar code MM1[]= Alert Set+MM; Uchar code XZ[]= Aj or Al; Void delay (uint x) / / delay { Uint, I, j; For (i=x; i0; i--) For (j=123; j0; j--); } Void (DI) / buzzer program. { Beep=0; Delay (5); Beep=1; Delay (5); } Void write_com (uchar x) / / write instruction { Rw=0; Rs=0; / / select instruction register P3=x; Delay (5); En=1; Delay (5); En=0; Delay (5); } Void write_date (uchar x) / / write data {rw=0; Rs=1; / / data register P3=x; Delay (5); En=1; Delay (5); En=0; Delay (5); } Void write_sfm (uchar, add, uchar, x) { Uchar, Shi, ge; Shi=x/10; Ge=x%10; Write_com (0x80+0x40+add); //0x80---DDRAM sets the two line display. 0x40 stands for the second line. Write_date (0x30+shi); Write_date (0x30+ge); } Void, init () { Write_com (0x38); //001110008 bit data interface; two line display (setting display mode) Write_com (0x01); / / screen Write_com (0x06); /read and write characters automatically add 1 pointer (whole screen does not move) Write_com (0x0c); the /display switch is turned on, the cursor does not show, and the cursor does not blink. Write_com (0x80+0x40+6); Wr