密码锁c程序（Code lock c program）.docVIP

密码锁c程序（Code lock c program） # include reg51. H # include string. H # include intrins. H # define uchar unsigned char # define uint unsigned int / / the last key and the current key number, the serial number range 0-15, 16 in this matrix means no buttons # define LCDIO P0 # define delay4us _nop_ () (); _nop_ (); _nop_ (); _nop_ (); / / implement a time delay Uchar buffer [6] = {0}; Define a uchar type array Display_Buffer with an array size of 6 Sbit sda = P3 ^ 3; / / cable Sbit SCL = P3 ^ 2; / / the clock line Sbit beep = P3 ^ 7; / / buzzer Bit flag = 0, aa; / / user-defined timed overflow flag bit Uchar DSY_BUFFER [16] = ; / / display buffering Uchar DSY_BUFFER1 [16] = ; Uchar Userpassword [6] = {0}; / / user input password Sbit rs = P2 ^ 0; / / rs rd decides which register to select Sbit rd = P2 ^ 1; Sbit e = P2 ^ 2; Sbit led = P2 ^ 7; Uchar code table2 [] = 654321; / / initial password setting Uchar code table [] = Your Password... ; / / title string Void delayms (uint z) / / delay subroutine, 1 millisecond delay { Uint x, y; For (x = z, x 0; x --) For (y = 110, y 0, y --); / / set to 110, the 12M crystal vibration calculation is used and the result is 1ms } Void delay () / / short delay, two machine cycles, the delay of the bus {; } Void write_com (uchar j) / / LCD write instruction function {rs = 0; Rd = 0; E = 0; P0 = j; Delayms (3); E = 1; Delayms (3); E = 0; } Void write_date (uchar j) / / LCD write data function { Rs = 1; Rd = 0; E = 0; P0 = j; Delayms (3); E = 1; Delayms (3); E = 0; } Void Display_String (uchar * p, uchar j) / / LCD display function {uchar I; Write_com (j); For (I = 0; I 16; i++) { Write_date (p [I]); } } Void init_lcd () / / initialize the LCD { E = 0; Write_com (0 x38); / / according to the data, the initialization Settings display Settings function two lines Write_com (0 x0c); / / based on the initialization step of the data: setting the instruction code: the cursor is not blinking at this point, the cursor moves, and the numbe