#include<reg52.h> //包含头文件，一般情况不需要改动，头文件包含特殊功能寄存器的定义#include<intrins.h>sbit SPK= P2^1; //定义喇叭端口sbit SCL= P2^2;sbit SDA= P2^3;sbit RS = P2^4; //定义端口 sbit RW = P2^5;sbit EN = P2^6;#define RS_CLR RS=0 #define RS_SET RS=1#define RW_CLR RW=0 #define RW_SET RW=1 #define EN_CLR EN=0#define EN_SET EN=1#define _Nop() _nop_() //定义空指令#define DataPort P0#define KeyPort P1unsigned int i;unsigned char num;unsigned char sec,min,hour;unsigned char temp_sec,temp_min,temp_hour;unsigned char KeyPressFlag;unsigned char FLAG_change;unsigned char temp[3];bit flag = 0;bit ack; //应答标志位/*------------------------------------------------ uS延时函数，含有输入参数 unsigned char t，无返回值 unsigned char 是定义无符号字符变量，其值的范围是 0~255 这里使用晶振12M，精确延时请使用汇编,大致延时 长度如下 T=tx2+5 uS ------------------------------------------------*/void DelayUs2x(unsigned char t){ while(--t);}/*------------------------------------------------ mS延时函数，含有输入参数 unsigned char t，无返回值 unsigned char 是定义无符号字符变量，其值的范围是 0~255 这里使用晶振12M，精确延时请使用汇编------------------------------------------------*/void DelayMs(unsigned char t){ while(t--) { //大致延时1mS DelayUs2x(245);DelayUs2x(245); }}/*------------------------------------------------ 判忙函数------------------------------------------------*/ bit LCD_Check_Busy(void) { DataPort= 0xFF; RS_CLR; RW_SET; EN_CLR; _nop_(); EN_SET; return (bit)(DataPort & 0x80); }/*------------------------------------------------ 写入命令函数------------------------------------------------*/ void LCD_Write_Com(unsigned char com) { DelayMs(5); RS_CLR; RW_CLR; EN_SET; DataPort= com; _nop_(); EN_CLR; }/*------------------------------------------------ 写入数据函数------------------------------------------------*/ void LCD_Write_Data(unsigned char Data) { DelayMs(5); RS_SET; RW_CLR; EN_SET; DataPort= Data; _nop_(); EN_CLR; }/*------------------------------------------------ 清屏函数------------------------------------------------*/ void LCD_Clear(void) { LCD_Write_Com(0x01); DelayMs(5); }/*------------------------------------------------ 写入字符串函数------------------------------------------------*/ void LCD_Write_String(unsigned char x,unsigned char y,unsigned char *s) { if(y == 0) { LCD_Write_Com(0x80 + x); //表示第一行 } else { LCD_Write_Com(0xC0 + x); //表示第二行 } while(*s) { LCD_Write_Data( *s); s ++; } }/*------------------------------------------------ 写入字符函数------------------------------------------------*/ void LCD_Write_Char(unsigned char x,unsigned char y,unsigned char Data) { if (y == 0) { LCD_Write_Com(0x80 + x); } else { LCD_Write_Com(0xC0 + x); } LCD_Write_Data( Data); }/*------------------------------------------------ 初始化函数------------------------------------------------*/ void LCD_Init(void) { LCD_Write_Com(0x38); /*显示模式设置*/ DelayMs(5); LCD_Write_Com(0x38); DelayMs(5); LCD_Write_Com(0x38); DelayMs(5); LCD_Write_Com(0x38); LCD_Write_Com(0x08); /*显示关闭*/ LCD_Write_Com(0x01); /*显示清屏*/ LCD_Write_Com(0x06); /*显示光标移动设置*/ DelayMs(5); LCD_Write_Com(0x0C); /*显示开及光标设置*/ } /*------------------------------------------------ 启动总线------------------------------------------------*/void Start_I2c(){ SDA=1; //发送起始条件的数据信号 _Nop(); SCL=1; _Nop(); //起始条件建立时间大于4.7us,延时 _Nop(); _Nop(); _Nop(); _Nop(); SDA=0; //发送起始信号 _Nop(); //起始条件锁定时间大于4μ _Nop(); _Nop(); _Nop(); _Nop(); SCL=0; //钳住I2C总线，准备发送或接收数据 _Nop(); _Nop();}/*------------------------------------------------ 结束总线------------------------------------------------*/void Stop_I2c(){ SDA=0; //发送结束条件的数据信号 _Nop(); //发送结束条件的时钟信号 SCL=1; //结束条件建立时间大于4μ _Nop(); _Nop(); _Nop(); _Nop(); _Nop(); SDA=1; //发送I2C总线结束信号 _Nop(); _Nop(); _Nop(); _Nop();}/*---------------------------------------------------------------- 字节数据传送函数 函数原型: void SendByte(unsigned char c);功能: 将数据c发送出去,可以是地址,也可以是数据,发完后等待应答,并对 此状态位进行操作.(不应答或非应答都使ack=0 假) 发送数据正常，ack=1; ack=0表示被控器无应答或损坏。------------------------------------------------------------------*/void SendByte(unsigned char c){ unsigned char BitCnt; for(BitCnt=0;BitCnt<8;BitCnt++) //要传送的数据长度为8位 { if((c<<BitCnt)&0x80)SDA=1; //判断发送位 else SDA=0; _Nop(); SCL=1; //置时钟线为高，通知被控器开始接收数据位 _Nop(); _Nop(); //保证时钟高电平周期大于4μ _Nop(); _Nop(); _Nop(); SCL=0; } _Nop(); _Nop(); SDA=1; //8位发送完后释放数据线，准备接收应答位 _Nop(); _Nop(); SCL=1; _Nop(); _Nop(); _Nop(); if(SDA==1)ack=0; else ack=1; //判断是否接收到应答信号 SCL=0; _Nop(); _Nop();}/*---------------------------------------------------------------- 字节数据传送函数 函数原型: unsigned char RcvByte();功能: 用来接收从器件传来的数据,并判断总线错误(不发应答信号)， 发完后请用应答函数。 ------------------------------------------------------------------*/unsigned char RcvByte(){ unsigned char retc; unsigned char BitCnt; retc=0; SDA=1; //置数据线为输入方式 for(BitCnt=0;BitCnt<8;BitCnt++) { _Nop(); SCL=0; //置时钟线为低，准备接收数据位 _Nop(); _Nop(); //时钟低电平周期大于4.7us _Nop(); _Nop(); _Nop(); SCL=1; //置时钟线为高使数据线上数据有效 _Nop(); _Nop(); retc=retc<<1; if(SDA==1)retc=retc+1; //读数据位,接收的数据位放入retc中 _Nop(); _Nop(); } SCL=0; _Nop(); _Nop(); return(retc);}/*---------------------------------------------------------------- 应答子函数原型: void Ack_I2c(void); ----------------------------------------------------------------*/void Ack_I2c(void){ SDA=0; _Nop(); _Nop(); _Nop(); SCL=1; _Nop(); _Nop(); //时钟低电平周期大于4μ _Nop(); _Nop(); _Nop(); SCL=0; //清时钟线，钳住I2C总线以便继续接收 _Nop(); _Nop(); }/*---------------------------------------------------------------- 非应答子函数原型: void NoAck_I2c(void); ----------------------------------------------------------------*/void NoAck_I2c(void){ SDA=1; _Nop(); _Nop(); _Nop(); SCL=1; _Nop(); _Nop(); //时钟低电平周期大于4μ _Nop(); _Nop(); _Nop(); SCL=0; //清时钟线，钳住I2C总线以便继续接收 _Nop(); _Nop(); }/*---------------------------------------------------------------- 向有子地址器件发送多字节数据函数 函数原型: bit ISendStr(unsigned char sla,unsigned char suba,ucahr *s,unsigned char no); 功能: 从启动总线到发送地址，子地址,数据，结束总线的全过程,从器件 地址sla，子地址suba，发送内容是s指向的内容，发送no个字节。 如果返回1表示操作成功，否则操作有误。注意： 使用前必须已结束总线。----------------------------------------------------------------*/bit ISendStr(unsigned char sla,unsigned char suba,unsigned char *s,unsigned char no){ unsigned char i; for(i=0;i<no;i++) { Start_I2c(); //启动总线 SendByte(sla); //发送器件地址 if(ack==0)return(0); SendByte(suba); //发送器件子地址 if(ack==0)return(0); SendByte(*s); //发送数据 if(ack==0)return(0); Stop_I2c(); //结束总线DelayMs(1); //必须延时等待芯片内部自动处理数据完毕s++;suba++; } return(1);}/*---------------------------------------------------------------- 向有子地址器件读取多字节数据函数 函数原型: bit ISendStr(unsigned char sla,unsigned char suba,ucahr *s,unsigned char no); 功能: 从启动总线到发送地址，子地址,读数据，结束总线的全过程,从器件 地址sla，子地址suba，读出的内容放入s指向的存储区，读no个字节。 如果返回1表示操作成功，否则操作有误。注意： 使用前必须已结束总线。----------------------------------------------------------------*/bit IRcvStr(unsigned char sla,unsigned char suba,unsigned char *s,unsigned char no){ unsigned char i; Start_I2c(); //启动总线 SendByte(sla); //发送器件地址 if(ack==0)return(0); SendByte(suba); //发送器件子地址 if(ack==0)return(0); Start_I2c(); SendByte(sla+1); if(ack==0)return(0); for(i=0;i<no-1;i++) { *s=RcvByte(); //发送数据 Ack_I2c(); //发送就答位 s++; } *s=RcvByte(); NoAck_I2c(); //发送非应位 Stop_I2c(); //结束总线 return(1);} /*------------------------------------------------按键扫描函数，返回扫描键值------------------------------------------------*/unsigned char KeyScan(void) //键盘扫描函数，使用行列逐级扫描法{ unsigned char Val; KeyPort=0xf0;//高四位置高，低四位拉低 if(KeyPort!=0xf0)//表示有按键按下 { DelayMs(10); //去抖if(KeyPort!=0xf0) { //表示有按键按下 KeyPort=0xfe; //检测第一行if(KeyPort!=0xfe) { Val=KeyPort&0xf0; Val+=0x0e; while(KeyPort!=0xfe); DelayMs(10); //去抖 while(KeyPort!=0xfe); return Val; } KeyPort=0xfd; //检测第二行if(KeyPort!=0xfd) { Val=KeyPort&0xf0; Val+=0x0d; while(KeyPort!=0xfd); DelayMs(10); //去抖 while(KeyPort!=0xfd); return Val; } KeyPort=0xfb; //检测第三行if(KeyPort!=0xfb) { Val=KeyPort&0xf0; Val+=0x0b; while(KeyPort!=0xfb); DelayMs(10); //去抖 while(KeyPort!=0xfb); return Val; } KeyPort=0xf7; //检测第四行if(KeyPort!=0xf7) { Val=KeyPort&0xf0; Val+=0x07; while(KeyPort!=0xf7); DelayMs(10); //去抖 while(KeyPort!=0xf7); return Val; } } } return 0xff;} /*------------------------------------------------按键值处理函数，返回扫键值------------------------------------------------*/unsigned char KeyPro(void){ switch(KeyScan()) { case 0x7e:return 0;break;//0 按下相应的键显示相对应的码值 case 0x7d:return 1;break;//1 case 0x7b:return 2;break;//2 case 0x77:return 3;break;//3 case 0xbe:return 4;break;//4 case 0xbd:return 5;break;//5 case 0xbb:return 6;break;//6 case 0xb7:return 7;break;//7 case 0xde:return 8;break;//8 case 0xdd:return 9;break;//9 case 0xdb:return 10;break;//a case 0xd7:return 11;break;//b case 0xee:return 12;break;//c case 0xed:return 13;break;//d case 0xeb:return 14;break;//e case 0xe7:return 15;break;//f default:return 0xff;break; }}/*------------------------------------------------ 主函数------------------------------------------------*/ /*void wang_zi(){ LCD_Write_Com(0x40);LCD_Write_Data(0x00);LCD_Write_Com(0x41);LCD_Write_Data(0x1f);LCD_Write_Com(0x42);LCD_Write_Data(0x04);LCD_Write_Com(0x43);LCD_Write_Data(0x04);LCD_Write_Com(0x44);LCD_Write_Data(0x1f);LCD_Write_Com(0x45);LCD_Write_Data(0x04);LCD_Write_Com(0x46);LCD_Write_Data(0x04);LCD_Write_Com(0x47);LCD_Write_Data(0x1f);}*/void main(void) { LCD_Init(); LCD_Clear();//清屏 //wang_zi(); TMOD = 0x01; TH0 = 0x3c; TL0 = 0xb0; EA = 1; ET0 = 1; TR0 = 1; EX1 = 1; IT1 = 1; sec = 0; min = 0; hour = 0; IRcvStr(0xae,4,temp,3); hour = temp[0]; min = temp[1]; sec = temp[2];while (1) { //LCD_Write_Char(7,0,'o'); //LCD_Write_Char(8,0,'k'); //LCD_Write_Com(0x80); //LCD_Write_Data(0x00); //LCD_Write_String(1,0,"I love you baby"); //LCD_Write_String(1,1,"Be my princess"); //时钟 LCD_Write_String(0,0,"Time:"); LCD_Write_Char(0,1,0x30+hour/10); LCD_Write_Char(1,1,0x30+hour%10); LCD_Write_Char(2,1,':'); LCD_Write_Char(3,1,0x30+min/10); LCD_Write_Char(4,1,0x30+min%10); LCD_Write_Char(5,1,':'); LCD_Write_Char(6,1,0x30+sec/10); LCD_Write_Char(7,1,0x30+sec%10); //闹钟 LCD_Write_String(8,0,"Alarm:"); LCD_Write_Char(8,1,0x30+temp_hour/10); LCD_Write_Char(9,1,0x30+temp_hour%10); LCD_Write_Char(10,1,':'); LCD_Write_Char(11,1,0x30+temp_min/10); LCD_Write_Char(12,1,0x30+temp_min%10); LCD_Write_Char(13,1,':'); LCD_Write_Char(14,1,0x30+temp_sec/10); LCD_Write_Char(15,1,0x30+temp_sec%10);KeyPort=0xf0; if( KeyPressFlag==1){ KeyPressFlag = 0; num = KeyPro();if(num == 0) { ET0 = ~ET0; } else if(num == 1) { temp[0] = 0; temp[1] = 0; temp[2] = 0; hour = 0;min = 0;sec = 0; } else if(num == 4) { FLAG_change++; if(FLAG_change == 3) { FLAG_change = 0; } }/************************************************************//////////////调时//////////////////////////////////////////////************************************************************/ if((num == 9)&&(FLAG_change == 0)) { hour++; if(hour == 24) { hour = 0; } } if((num == 9)&&(FLAG_change == 1)) { min++; if(min == 60) { min = 0; } } if((num == 9)&&(FLAG_change == 2)) { sec++; if(sec == 60) { sec = 0; } }if((num == 10)&&(FLAG_change == 0)) { hour--; if(hour == 255) { hour = 23; } } if((num == 10)&&(FLAG_change == 1)) { min--; if(min == 255) { min = 59; } } if((num == 10)&&(FLAG_change == 2)) { sec--; if(sec == 60) { sec = 59; } }/**************************************************///闹铃/**************************************************/ if((num == 5)&&(FLAG_change == 0)) { temp_hour++; if(temp_hour == 24) { temp_hour = 0; } } if((num == 5)&&(FLAG_change == 1)) { temp_min++; if(temp_min == 60) { temp_min = 0; } } if((num == 5)&&(FLAG_change == 2)) { temp_sec++; if(temp_sec == 60) { temp_sec = 0; } }if((num == 6)&&(FLAG_change == 0)) { temp_hour--; if(temp_hour == 255) { temp_hour = 23; } } if((num == 6)&&(FLAG_change == 1)) { temp_min--; if(temp_min == 255) { temp_min = 59; } } if((num == 6)&&(FLAG_change == 2)) { temp_sec--; if(temp_sec == 255) { temp_sec = 59; } }}if((temp_sec == sec)&&(temp_hour == hour)&&(temp_min == min)){ SPK=!SPK;} ISendStr(0xae,4,temp,3); }}void ISR_T0(void) interrupt 1{ static unsigned char i;TH0 = 0x3c;TL0 = 0xb0; i++;if(i==20){ if(flag == 1) { if(sec == 10) flag = 0; } if(flag == 1){ SPK=!SPK;} i = 0;sec++;if(sec == 60){ sec = 0; min ++;if( min == 60){ flag = 1; min = 0;hour++;if(hour == 24){ hour = 0;}} }} temp[0] = hour; temp[1] = min; temp[2] = sec;}void Key_flag()interrupt 2{KeyPressFlag=1;}
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