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ds1302 c51程序代码

时间: 2023-08-03 19:07:40 浏览: 113

下面是DS1302在C51单片机上的程序代码： ```c #include <reg51.h> #define uchar unsigned char #define uint unsigned int sbit DSIO = P3^4; sbit RST = P3^5; sbit SCLK = P3^6; uchar code table[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; void delay(uint x) { uint i,j; for(i=x;i>0;i--) for(j=110;j>0;j--); } void Write_Ds1302_Byte(uchar dat) { uchar i; for(i=0;i<8;i++) { DSIO = dat&0x01; SCLK = 0; SCLK = 1; dat >>= 1; } } uchar Read_Ds1302_Byte() { uchar i,dat = 0; for(i=0;i<8;i++) { dat >>= 1; SCLK = 0; if(DSIO) dat |= 0x80; SCLK = 1; } return dat; } void Write_Ds1302(uchar addr,uchar dat) { RST = 0; SCLK = 0; RST = 1; Write_Ds1302_Byte(addr); Write_Ds1302_Byte(dat); RST = 0; } uchar Read_Ds1302(uchar addr) { uchar dat; RST = 0; SCLK = 0; RST = 1; Write_Ds1302_Byte(addr); dat = Read_Ds1302_Byte(); RST = 0; return dat; } void Init_Ds1302() { Write_Ds1302(0x8e,0x00); Write_Ds1302(0x80,0x00); } void Display_Time() { uchar shi,ge; shi = Read_Ds1302(0x85); ge = Read_Ds1302(0x84); P0 = 0x00; P2 = 0xfe; P0 = table[shi/16]; delay(100); P0 = 0x00; P2 = 0xfd; P0 = table[shi%16]; delay(100); P0 = 0x00; P2 = 0xfb; P0 = table[ge/16]; delay(100); P0 = 0x00; P2 = 0xf7; P0 = table[ge%16]; delay(100); } void main() { Init_Ds1302(); while(1) { Display_Time(); } } ``` 上面的代码中，我们使用了P3.4、P3.5和P3.6三个引脚来连接DS1302实时时钟模块的数据、复位和时钟线。程序中的函数分别用于写入一个字节、读取一个字节、写入DS1302时钟寄存器、读取DS1302时钟寄存器、初始化DS1302和显示时间等操作。最后，在主函数中通过循环不断地显示当前时间。

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