DS1302时钟 1602液晶显示

//寄存器宏定义 #include<reg51.h> #include<intrins.h> #define WRITE_SECOND 0x80 #define WRITE_MINUTE 0x82 #define WRITE_HOUR 0x84 #define WRITE_DATE 0x86 #define WRITE_MONTH 0x88 #define WRITE_DAY 0x8A #define WRITE_YEAR 0x8C #define READ_SECOND 0x81 #define READ_MINUTE 0x83 #define READ_HOUR 0x85 #define READ_DATE 0x87 #define READ_MONTH 0x89 #define READ_DAY 0x8B #define READ_YEAR 0x8D #define WRITE_PROTECT 0x8E #define uchar unsigned char //位寻址寄存器定义 sbit ACC_7 = ACC^7; //管脚定义 sbit sclk=P3^0; // DS1302时钟信号 7脚 sbit io=P3^1; // DS1302数据信号 6脚 sbit rst=P3^2; // DS1302片选 5脚 sbit RS=P3^3;