54 lines
1.0 KiB
C
54 lines
1.0 KiB
C
/* # DS1302代码片段说明
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1. 本文件夹中提供的驱动代码供参赛选手完成程序设计参考。
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2. 参赛选手可以自行编写相关代码或以该代码为基础，根据所选单片机类型、运行速度和试题
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中对单片机时钟频率的要求，进行代码调试和修改。
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*/
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//
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void Write_Ds1302(unsigned char temp)
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{
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unsigned char i;
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for (i=0;i<8;i++)
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{
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SCK = 0;
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SDA = temp&0x01;
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temp>>=1;
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SCK=1;
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}
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}
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//
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void Write_Ds1302_Byte( unsigned char address,unsigned char dat )
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{
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RST=0; _nop_();
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SCK=0; _nop_();
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RST=1; _nop_();
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Write_Ds1302(address);
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Write_Ds1302(dat);
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RST=0;
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}
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//
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unsigned char Read_Ds1302_Byte ( unsigned char address )
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{
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unsigned char i,temp=0x00;
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RST=0; _nop_();
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SCK=0; _nop_();
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RST=1; _nop_();
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Write_Ds1302(address);
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for (i=0;i<8;i++)
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{
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SCK=0;
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temp>>=1;
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if(SDA)
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temp|=0x80;
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SCK=1;
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}
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RST=0; _nop_();
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SCK=0; _nop_();
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SCK=1; _nop_();
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SDA=0; _nop_();
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SDA=1; _nop_();
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return (temp);
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}
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