c5.rar_C 继电器

/*时钟程序,这个例子其实就是时钟例子和LCD1602的简单结合，可先了解下这两个例子后再来分析这个例子就容易些了*/ #include <reg51.h> #include <intrins.h> sbit SCL2=P1^3; //SCL2定义为P1口的第3位脚，连接DS1302SCL和ADC0831SCL脚 sbit SDA2=P1^4; //SDA2定义为P1口的第4位脚，连接DS1302SCL和ADC0831SDA脚 //sbit CS2=P1^6; //CS2定义为P1口的第4位脚，连接ADC0831CS脚 sbit RST = P1^5; // DS1302片选脚 sbit LCD_RS=P1^0; sbit LCD_RW=P1^1; sbit LCD_E=P1^2; #define LCD_Data P2 #define Busy 0x80 unsigned char l_tmpdate[8]={0x00,0x06,0x03,0x0A,0x08,0x07,0x08,0};//读时间的续冲，初始值是写入的时间， //秒，分，时，日，月，星期，年， unsigned char l_tmpdisplay[16]={"Data 20 "}; //设好显示的开头 unsigned char l_tmpdisplay2[16]={"time "}; code unsigned char write_rtc_address[7]={0x80,0x82,0x84,0x86,0x88,0x8a,0x8c}; //写时间的地址 //code unsigned char write_rtc_address2[3]={0x86,0x88,0x8c};// 0x8a,}; code unsigned char read_rtc_address[7]={0x81,0x83,0x85,0x87,0x89,0x8b,0x8d}; //读时间的地址 void delay();//延时子函数，5个空指令 void Write_Ds1302_byte(unsigned char temp); void Write_Ds1302( unsigned char address,unsigned char dat ); unsigned char Read_Ds1302 ( unsigned char address ); void Read_RTC(void);//read RTC void Set_RTC(void);//set RTC void WriteDataLCD(unsigned char WDLCD); void WriteCommandLCD(unsigned char WCLCD,BuysC); unsigned char ReadDataLCD(void); unsigned char ReadStatusLCD(void); void LCDInit(void); void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData); void DisplayListChar(unsigned char X, unsigned char Y, unsigned char *DData); void Delay5Ms(void); void Delay400Ms(void); void main(void) //入口函数 { Set_RTC(); //写时间 Delay400Ms(); //启动等待，等LCD讲入工作状态 LCDInit(); //LCM初始化 Delay5Ms(); while(1){ Read_RTC(); l_tmpdisplay[7]=(l_tmpdate[6]/16)+0X30; //这里加上0X30是在ASCII字符编码中的地址，你们可以查下ASCII码 //这里除以16怎么不是除以10呢，是的，这是因为DS1302里面是按10进制存放的 l_tmpdisplay[8]=(l_tmpdate[6]&0x0f)+0X30; l_tmpdisplay[9]=0X3A; l_tmpdisplay[10]=(l_tmpdate[4]/16)+0X30; l_tmpdisplay[11]=(l_tmpdate[4]&0x0f)+0X30; l_tmpdisplay[12]=0X3A; l_tmpdisplay[13]=(l_tmpdate[3]/16)+0X30; l_tmpdisplay[14]=(l_tmpdate[3]&0x0f)+0X30; DisplayListChar(0, 0, l_tmpdisplay); //输出液晶显示 l_tmpdisplay2[5]=(l_tmpdate[2]/16)+0X30; l_tmpdisplay2[6]=(l_tmpdate[2]&0x0f)+0X30; l_tmpdisplay2[7]=0X3A; l_tmpdisplay2[8]=(l_tmpdate[1]/16)+0X30; l_tmpdisplay2[9]=(l_tmpdate[1]&0x0f)+0X30; l_tmpdisplay2[10]=0X3A; l_tmpdisplay2[11]=(l_tmpdate[0]/16)+0X30; l_tmpdisplay2[12]=(l_tmpdate[0]&0x0f)+0X30; DisplayListChar(0, 5, l_tmpdisplay2); } } void delay(void) //空5个指令 { unsigned char i=10; while(i) i--; } void Write_Ds1302_Byte(unsigned char temp) { unsigned char i; for (i=0;i<8;i++) //循环8次 写入数据 { SCL2=0; SDA2=temp&0X01; //每次传输低字节 temp>>=1; //右移一位 SCL2=1; } } /****************************************************************************/ void Write_Ds1302( unsigned char address,unsigned char dat ) { RST=0; _nop_(); SCL2=0; _nop_(); RST=1; _nop_(); //启动 Write_Ds1302_Byte(address); //发送地址 Write_Ds1302_Byte(dat); //发送数据 RST=0; //恢复 } /****************************************************************************/ unsigned char Read_Ds1302 ( unsigned char address ) { unsigned char i,temp=0x00; RST=0; _nop_(); SCL2=0; _nop_(); RST=1; _nop_(); Write_Ds1302_Byte(address); for (i=0;i<8;i++) //循环8次 读取数据 { if(SDA2) temp|=0x80; //每次传输低字节 SCL2=0; temp>>=1; //右移一位 SCL2=1; } RST=0; _nop_(); //以下为DS1302复位的稳定时间 RST=0; SCL2=0; _nop_(); SCL2=1; _nop_(); SDA2=0; _nop_(); SDA2=1; _nop_(); return (temp); //返回 } /****************************************************************************/ void Read_RTC(void) //读取 日历 { unsigned char i,*p; p=read_rtc_address; //地址传递 for(i=0;i<7;i++) //分7次读取 年月日时分秒星期 { l_tmpdate[i]=Read_Ds1302(*p); p++; } } /***********************************************************************/ void Set_RTC(void) //设定 日历 { unsigned char i,*p,tmp; for(i=0;i<7;i++){ tmp=l_tmpdate[i]/10; l_tmpdate[i]=l_tmpdate[i]%10; l_tmpdate[i]=l_tmpdate[i]+tmp*16; } Write_Ds1302(0x8E,0X00); p=write_rtc_address; //传地址 for(i=0;i<7;i++) //7次写入 年月日时分秒星期 { Write_Ds1302(*p,l_tmpdate[i]); p++; } Write_Ds1302(0x8E,0x80); } //写数据 void WriteDataLCD(unsigned char WDLCD) { ReadStatusLCD(); //检测忙 LCD_Data = WDLCD; LCD_RS = 1; LCD_RW = 0; LCD_E = 0; //若晶振速度太高可以在这后加小的延时 LCD_E = 0; //延时 LCD_E = 1; } //写指令 void WriteCommandLCD(unsigned char WCLCD,BuysC) //BuysC为0时忽略忙检测 { if (BuysC) ReadStatusLCD(); //根据需要检测忙 LCD_Data = WCLCD; LCD_RS = 0; LCD_RW = 0; LCD_E = 0; LCD_E = 0; LCD_E = 1; } //读数据 unsigned char ReadDataLCD(void) { LCD_RS = 1; LCD_RW = 1; LCD_E = 0; LCD_E = 0; LCD_E = 1; return(LCD_Data); } //读状态 unsigned char ReadStatusLCD(void) { LCD_Data = 0xFF; LCD_RS = 0; LCD_RW = 1; LCD_E = 0; LCD_E = 0; LCD_E = 1; while (LCD_Data & Busy); //检测忙信号 return(LCD_Data); } void LCDInit(void) //LCM初始化 { LCD_Data = 0; WriteCommandLCD(0x38,0); //三次显示模式设置，不检测忙信号 Delay5Ms(); WriteCommandLCD(0x38,0); Delay5Ms(); WriteCommandLCD(0x38,0); Delay5Ms(); WriteCommandLCD(0x38,1); //显示模式设置,开始要求每次检测忙信号 WriteCommandLCD(0x08,1); //关闭显示 WriteCommandLCD(0x01,1); //显示清屏 WriteCommandLCD(0x06,1); // 显示光标移动设置 WriteCommandLCD(0x0C,1); // 显示开及光标设置 } //按指定位置显示一个字符 void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData) { Y &= 0x1; X &= 0xF; //限制X不能大于15，Y不能大于1 if (Y) X |= 0x40; //当要显示第二行时地址码+0x40; X |= 0x80; // 算出指令码 WriteCommandLCD(X, 0); //这里不检测忙信号，发送地址码 WriteDataLCD(DData); } //按指定位置显示一串字符 void DisplayListChar(unsigned char X, unsigned char Y, unsigned char *DData) { unsigned char ListLength; ListLength = 0; Y &= 0x1; X &= 0xF; //限制X不能大于15，Y不能大于1 while (DData[ListLength]>=0x20) //若到达字串尾则退出 { if (X <= 0xF) //X坐标应小于0xF { DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符 ListLength++; X++; } } } //5ms延时 void Delay5Ms(void) { unsigned int TempCyc = 5552; while(TempCyc--); } //400ms延时 void Delay400Ms(void) { unsigned char TempCycA = 5; unsigned int TempCycB; while(TempCycA--) { TempCycB=7269; while(TempCycB--); }; }