基于at24c02的數(shù)字密碼鎖設(shè)計(jì)(stc89c52單片機(jī))

1、基于基于AT24C02AT24C02的數(shù)字密碼鎖設(shè)計(jì)的數(shù)字密碼鎖設(shè)計(jì)(STC89C52單片機(jī))S1S10數(shù)字鍵09S13更改密碼S14進(jìn)入密碼鎖S15關(guān)閉密碼鎖（使數(shù)字鍵失效）初始密碼：000000密碼位數(shù)：6位（由宏定義設(shè)定）#include“reg52.h“#include“intrins.h“#defineuunsigned#defineuintunsignedint#definenop4()_nop_()_nop_()_nop_

2、()_nop_()#defineN6密碼的位數(shù)在此更改sbitscl=P2^1時(shí)鐘線sbitsda=P2^0數(shù)字線sbitrw=P1^1sbitRS=P1^0sbitLCDEN=P2^5sbitdula=P2^6sbitwela=P2^7sbitD6=P1^7umima[N]input[N]reset[N]ukeyp=1uintytempvoiddelayUs()微秒級(jí)延時(shí)_nop_()voiddelayMs(uinta)毫秒級(jí)延時(shí)re

3、turnrdvoidWrite_A_Byte(uwd)寫(xiě)一個(gè)字節(jié)uif(i=0i8i)wd=1sda=CYnop4()nop4()scl=1scl=0ack()voidWrite_Address_Byte(uaddudat)向地址寫(xiě)字節(jié)start()Write_A_Byte(0xa0)Write_A_Byte(add)Write_A_Byte(dat)stop()nop4()uRead_Address_Byte(uaddr)從地址讀字節(jié)