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📁 DS1302的C语言程序例子
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      <P align=center><B>实时时钟芯片DS1302的C51程序列子</B></P></TD></TR>
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      width="100%">实时时钟模DS1302程序列子&nbsp;<BR><BR>&nbsp;&nbsp;&nbsp;&nbsp;/*********************************************************************/<BR>/*&nbsp;实时时钟模块&nbsp;时钟芯片型号：DS1302&nbsp;*/<BR>/*/<BR>/*********************************************************************/<BR>sbit&nbsp;T_CLK&nbsp;=&nbsp;P2^7;&nbsp;/*实时时钟时钟线引脚&nbsp;*/<BR>sbit&nbsp;T_IO&nbsp;=&nbsp;P1^4;&nbsp;/*实时时钟数据线引脚&nbsp;*/<BR>sbit&nbsp;T_RST&nbsp;=&nbsp;P1^5;&nbsp;/*实时时钟复位线引脚&nbsp;*/<BR>/********************************************************************&nbsp;<BR>*<BR>*&nbsp;名称:&nbsp;v_RTInputByte<BR>*&nbsp;说明:&nbsp;<BR>*&nbsp;功能:&nbsp;往DS1302写入1Byte数据<BR>*&nbsp;调用:<BR>*&nbsp;输入:&nbsp;ucDa&nbsp;写入的数据&nbsp;<BR>*&nbsp;返回值:&nbsp;无<BR>***********************************************************************/<BR>void&nbsp;v_RTInputByte(uchar&nbsp;ucDa)&nbsp;<BR>{&nbsp;<BR>uchar&nbsp;i;<BR>ACC&nbsp;=&nbsp;ucDa;<BR>for(i=8;&nbsp;i&gt;0;&nbsp;i--)<BR>{<BR>T_IO&nbsp;=&nbsp;ACC0;&nbsp;/*相当于汇编中的&nbsp;RRC&nbsp;*/<BR>T_CLK&nbsp;=&nbsp;1;<BR>T_CLK&nbsp;=&nbsp;0;<BR>ACC&nbsp;=&nbsp;ACC&nbsp;&gt;&gt;&nbsp;1;&nbsp;<BR>}&nbsp;<BR>}<BR>/********************************************************************&nbsp;<BR>*<BR>*&nbsp;名称:&nbsp;uchar&nbsp;uc_RTOutputByte<BR>*&nbsp;说明:&nbsp;<BR>*&nbsp;功能:&nbsp;从DS1302读取1Byte数据<BR>*&nbsp;调用:&nbsp;<BR>*&nbsp;输入:&nbsp;<BR>*&nbsp;返回值:&nbsp;ACC<BR>***********************************************************************/<BR>uchar&nbsp;uc_RTOutputByte(void)&nbsp;<BR>{&nbsp;<BR>uchar&nbsp;i;<BR>for(i=8;&nbsp;i&gt;0;&nbsp;i--)<BR>{<BR>ACC&nbsp;=&nbsp;ACC&nbsp;&gt;&gt;1;&nbsp;/*相当于汇编中的&nbsp;RRC&nbsp;*/<BR>ACC7&nbsp;=&nbsp;T_IO;<BR>T_CLK&nbsp;=&nbsp;1;<BR>T_CLK&nbsp;=&nbsp;0;<BR>}&nbsp;<BR>return(ACC);&nbsp;<BR>}<BR>/********************************************************************&nbsp;<BR>*<BR>*&nbsp;名称:&nbsp;v_W1302<BR>*&nbsp;说明:&nbsp;先写地址，后写命令/数据<BR>*&nbsp;功能:&nbsp;往DS1302写入数据<BR>*&nbsp;调用:&nbsp;v_RTInputByte()&nbsp;<BR>*&nbsp;输入:&nbsp;ucAddr:&nbsp;DS1302地址,&nbsp;ucDa:&nbsp;要写的数据<BR>*&nbsp;返回值:&nbsp;无<BR>***********************************************************************/<BR>void&nbsp;v_W1302(uchar&nbsp;ucAddr,&nbsp;uchar&nbsp;ucDa)<BR>{<BR>T_RST&nbsp;=&nbsp;0;<BR>T_CLK&nbsp;=&nbsp;0;<BR>T_RST&nbsp;=&nbsp;1;<BR>v_RTInputByte(ucAddr);&nbsp;/*&nbsp;地址，命令&nbsp;*/<BR>v_RTInputByte(ucDa);&nbsp;/*&nbsp;写1Byte数据*/<BR>T_CLK&nbsp;=&nbsp;1;<BR>T_RST&nbsp;=0;<BR>}&nbsp;<BR>/********************************************************************&nbsp;<BR>*<BR>*&nbsp;名称:&nbsp;uc_R1302<BR>*&nbsp;说明:&nbsp;先写地址，后读命令/数据<BR>*&nbsp;功能:&nbsp;读取DS1302某地址的数据<BR>*&nbsp;调用:&nbsp;v_RTInputByte()&nbsp;,&nbsp;uc_RTOutputByte()<BR>*&nbsp;输入:&nbsp;ucAddr:&nbsp;DS1302地址<BR>*&nbsp;返回值:&nbsp;ucDa&nbsp;:读取的数据<BR>***********************************************************************/<BR>uchar&nbsp;uc_R1302(uchar&nbsp;ucAddr)<BR>{<BR>uchar&nbsp;ucDa;<BR>T_RST&nbsp;=&nbsp;0;<BR>T_CLK&nbsp;=&nbsp;0;<BR>T_RST&nbsp;=&nbsp;1;<BR>v_RTInputByte(ucAddr);&nbsp;/*&nbsp;地址，命令&nbsp;*/<BR>ucDa&nbsp;=&nbsp;uc_RTOutputByte();&nbsp;/*&nbsp;读1Byte数据&nbsp;*/<BR>T_CLK&nbsp;=&nbsp;1;<BR>T_RST&nbsp;=0;<BR>return(ucDa);<BR>}<BR>/********************************************************************&nbsp;<BR>*<BR>*&nbsp;名称:&nbsp;v_BurstW1302T<BR>*&nbsp;说明:&nbsp;先写地址，后写数据(时钟多字节方式)<BR>*&nbsp;功能:&nbsp;往DS1302写入时钟数据(多字节方式)<BR>*&nbsp;调用:&nbsp;v_RTInputByte()&nbsp;<BR>*&nbsp;输入:&nbsp;pSecDa:&nbsp;时钟数据地址&nbsp;格式为:&nbsp;秒&nbsp;分&nbsp;时&nbsp;日&nbsp;月&nbsp;星期&nbsp;年&nbsp;控制<BR>*&nbsp;8Byte&nbsp;(BCD码)&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B<BR>*&nbsp;返回值:&nbsp;无<BR>***********************************************************************/<BR>void&nbsp;v_BurstW1302T(uchar&nbsp;*pSecDa)<BR>{<BR>uchar&nbsp;i;<BR>v_W1302(0x8e,0x00);&nbsp;/*&nbsp;控制命令,WP=0,写操作?*/<BR>T_RST&nbsp;=&nbsp;0;<BR>T_CLK&nbsp;=&nbsp;0;<BR>T_RST&nbsp;=&nbsp;1;<BR>v_RTInputByte(0xbe);&nbsp;/*&nbsp;0xbe:时钟多字节写命令&nbsp;*/<BR>for&nbsp;(i=8;i&gt;0;i--)&nbsp;/*8Byte&nbsp;=&nbsp;7Byte&nbsp;时钟数据&nbsp;+&nbsp;1Byte&nbsp;控制*/<BR>{<BR>v_RTInputByte(*pSecDa);/*&nbsp;写1Byte数据*/<BR>pSecDa++;<BR>}<BR>T_CLK&nbsp;=&nbsp;1;<BR>T_RST&nbsp;=0;<BR>}&nbsp;<BR>/********************************************************************&nbsp;<BR>*<BR>*&nbsp;名称:&nbsp;v_BurstR1302T<BR>*&nbsp;说明:&nbsp;先写地址，后读命令/数据(时钟多字节方式)<BR>*&nbsp;功能:&nbsp;读取DS1302时钟数据<BR>*&nbsp;调用:&nbsp;v_RTInputByte()&nbsp;,&nbsp;uc_RTOutputByte()<BR>*&nbsp;输入:&nbsp;pSecDa:&nbsp;时钟数据地址&nbsp;格式为:&nbsp;秒&nbsp;分&nbsp;时&nbsp;日&nbsp;月&nbsp;星期&nbsp;年&nbsp;<BR>*&nbsp;7Byte&nbsp;(BCD码)&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B<BR>*&nbsp;返回值:&nbsp;ucDa&nbsp;:读取的数据<BR>***********************************************************************/<BR>void&nbsp;v_BurstR1302T(uchar&nbsp;*pSecDa)<BR>{<BR>uchar&nbsp;i;<BR>T_RST&nbsp;=&nbsp;0;<BR>T_CLK&nbsp;=&nbsp;0;<BR>T_RST&nbsp;=&nbsp;1;<BR>v_RTInputByte(0xbf);&nbsp;/*&nbsp;0xbf:时钟多字节读命令&nbsp;*/<BR>for&nbsp;(i=8;&nbsp;i&gt;0;&nbsp;i--)&nbsp;<BR>{<BR>*pSecDa&nbsp;=&nbsp;uc_RTOutputByte();&nbsp;/*&nbsp;读1Byte数据&nbsp;*/<BR>pSecDa++;<BR>}<BR>T_CLK&nbsp;=&nbsp;1;<BR>T_RST&nbsp;=0;<BR>}<BR>/********************************************************************&nbsp;<BR>*<BR>*&nbsp;名称:&nbsp;v_BurstW1302R<BR>*&nbsp;说明:&nbsp;先写地址，后写数据(寄存器多字节方式)<BR>*&nbsp;功能:&nbsp;往DS1302寄存器数写入数据(多字节方式)<BR>*&nbsp;调用:&nbsp;v_RTInputByte()&nbsp;<BR>*&nbsp;输入:&nbsp;pReDa:&nbsp;寄存器数据地址<BR>*&nbsp;返回值:&nbsp;无<BR>***********************************************************************/<BR>void&nbsp;v_BurstW1302R(uchar&nbsp;*pReDa)<BR>{<BR>uchar&nbsp;i;<BR>v_W1302(0x8e,0x00);&nbsp;/*&nbsp;控制命令,WP=0,写操作?*/<BR>T_RST&nbsp;=&nbsp;0;<BR>T_CLK&nbsp;=&nbsp;0;<BR>T_RST&nbsp;=&nbsp;1;<BR>v_RTInputByte(0xfe);&nbsp;/*&nbsp;0xbe:时钟多字节写命令&nbsp;*/<BR>for&nbsp;(i=31;i&gt;0;i--)&nbsp;/*31Byte&nbsp;寄存器数据&nbsp;*/<BR>{<BR>v_RTInputByte(*pReDa);&nbsp;/*&nbsp;写1Byte数据*/<BR>pReDa++;<BR>}<BR>T_CLK&nbsp;=&nbsp;1;<BR>T_RST&nbsp;=0;<BR>}&nbsp;<BR>/********************************************************************&nbsp;<BR>*<BR>*&nbsp;名称:&nbsp;uc_BurstR1302R<BR>*&nbsp;说明:&nbsp;先写地址，后读命令/数据(寄存器多字节方式)<BR>*&nbsp;功能:&nbsp;读取DS1302寄存器数据<BR>*&nbsp;调用:&nbsp;v_RTInputByte()&nbsp;,&nbsp;uc_RTOutputByte()<BR>*&nbsp;输入:&nbsp;pReDa:&nbsp;寄存器数据地址<BR>*&nbsp;返回值:&nbsp;无<BR>***********************************************************************/<BR>void&nbsp;v_BurstR1302R(uchar&nbsp;*pReDa)<BR>{<BR>uchar&nbsp;i;<BR>T_RST&nbsp;=&nbsp;0;<BR>T_CLK&nbsp;=&nbsp;0;<BR>T_RST&nbsp;=&nbsp;1;<BR>v_RTInputByte(0xff);&nbsp;/*&nbsp;0xbf:时钟多字节读命令&nbsp;*/<BR>for&nbsp;(i=31;&nbsp;i&gt;0;&nbsp;i--)&nbsp;/*31Byte&nbsp;寄存器数据&nbsp;*/<BR>{<BR>*pReDa&nbsp;=&nbsp;uc_RTOutputByte();&nbsp;/*&nbsp;读1Byte数据&nbsp;*/<BR>pReDa++;<BR>}<BR>T_CLK&nbsp;=&nbsp;1;<BR>T_RST&nbsp;=0;<BR>}<BR>/********************************************************************&nbsp;<BR>*<BR>*&nbsp;名称:&nbsp;v_Set1302<BR>*&nbsp;说明:&nbsp;<BR>*&nbsp;功能:&nbsp;设置初始时间<BR>*&nbsp;调用:&nbsp;v_W1302()&nbsp;<BR>*&nbsp;输入:&nbsp;pSecDa:&nbsp;初始时间地址。初始时间格式为:&nbsp;秒&nbsp;分&nbsp;时&nbsp;日&nbsp;月&nbsp;星期&nbsp;年&nbsp;<BR>*&nbsp;7Byte&nbsp;(BCD码)&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B<BR>*&nbsp;返回值:&nbsp;无<BR>***********************************************************************/<BR>void&nbsp;v_Set1302(uchar&nbsp;*pSecDa)&nbsp;<BR>{<BR>uchar&nbsp;i;<BR>uchar&nbsp;ucAddr&nbsp;=&nbsp;0x80;&nbsp;<BR>v_W1302(0x8e,0x00);&nbsp;/*&nbsp;控制命令,WP=0,写操作?*/<BR>for(i&nbsp;=7;i&gt;0;i--)<BR>{&nbsp;<BR>v_W1302(ucAddr,*pSecDa);&nbsp;/*&nbsp;秒&nbsp;分&nbsp;时&nbsp;日&nbsp;月&nbsp;星期&nbsp;年&nbsp;*/<BR><BR>pSecDa++;<BR>ucAddr&nbsp;+=2;<BR>}<BR>v_W1302(0x8e,0x80);&nbsp;/*&nbsp;控制命令,WP=1,写保护?*/<BR>}<BR>/********************************************************************&nbsp;<BR>*<BR>*&nbsp;名称:&nbsp;v_Get1302<BR>*&nbsp;说明:&nbsp;<BR>*&nbsp;功能:&nbsp;读取DS1302当前时间<BR>*&nbsp;调用:&nbsp;uc_R1302()&nbsp;<BR>*&nbsp;输入:&nbsp;ucCurtime:&nbsp;保存当前时间地址。当前时间格式为:&nbsp;秒&nbsp;分&nbsp;时&nbsp;日&nbsp;月&nbsp;星期&nbsp;年&nbsp;<BR>*&nbsp;7Byte&nbsp;(BCD码)&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B&nbsp;1B<BR>*&nbsp;返回值:&nbsp;无<BR>***********************************************************************/<BR>void&nbsp;v_Get1302(uchar&nbsp;ucCurtime[])&nbsp;<BR>{<BR>uchar&nbsp;i;<BR>uchar&nbsp;ucAddr&nbsp;=&nbsp;0x81;<BR>for&nbsp;(i=0;i&lt;7;i++)<BR>{<BR>ucCurtime[i]&nbsp;=&nbsp;uc_R1302(ucAddr);/*格式为:&nbsp;秒&nbsp;分&nbsp;时&nbsp;日&nbsp;月&nbsp;<BR>星期&nbsp;年&nbsp;*/<BR>ucAddr&nbsp;+=&nbsp;2;<BR>}<BR>}&nbsp;<BR>&nbsp;</TD></TR></TBODY></TABLE>
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