基于51单片机实现的模拟电话拨号设计

#include<reg51.h> #include<string.h> #include<stdio.h> #include<SoundPlay.h> #define uint unsigned int #define uchar unsigned char uchar keycode,DDram_value=0xc0; sbit rs=P2^0; sbit rw=P2^1; sbit e=P2^2; sbit speaker=P2^3; uchar y=23; uchar m=07; uchar d=20; uchar code table[]={0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x20};//0x30:0011 0000 代表数字3...以此类推 unsigned char code Music_Girl[]={ 0x17,0x02, 0x17,0x03, 0x18,0x03, 0x19,0x02, 0x15,0x03, 0x16,0x03, 0x17,0x03, 0x17,0x03, 0x17,0x03, 0x18,0x03, 0x19,0x02, 0x16,0x03, 0x17,0x03, 0x18,0x02, 0x18,0x03, 0x17,0x03,0x18,0x66, 0x16,0x02, 0x17,0x02, 0x15,0x00, 0x00,0x00}; void lcd_delay();//LCD延时 void delay(uint n);//延时 void lcd_init(void);//LCD显示初始化 void lcd_busy(void);//判断LCD是否繁忙 void lcd_wr_con(uchar c);//向LCD写命令 void lcd_wr_data(uchar d);//向LCD写数据 void lcd_wr_str(uchar *str); uchar checkkey(void);// 检测有无按键按下 uchar keyscan(void);//键盘扫描函数 void getDate(uchar y,uchar m,uchar d);//获取时间 void lcd_scroll(uchar *str);//滚动 void main() { lcd_init(); InitialSound(); lcd_wr_con(0x80);//设置数据指针起点,从第一行第一个位置开始写 lcd_wr_str("Designer by XXX"); while(1) { keycode=keyscan(); if(keycode==15) { lcd_scroll("...Dialing... "); // Play(Music_Girl,0,3,360);//在拨号后实现响铃效果 break; } if((keycode>=0)&&(keycode<=9)||((keycode>=18&&keycode<=24))) { lcd_wr_con(0x06); lcd_wr_con(DDram_value);//第二行的地址 if(keycode==18) { lcd_wr_con(0x80); getDate(y,m,d); lcd_wr_con(0xc0); lcd_wr_str(" Welcome! "); delay(5000); break; } if(keycode==24) { lcd_wr_data(0x2a); } else if(keycode==21) { lcd_wr_data(0x23); } lcd_wr_data(table[keycode]); DDram_value++; } else if(keycode==0x0a)//10按下点.清除一位的功能 { lcd_wr_con(0x04); DDram_value--; if(DDram_value<=0xc0) { DDram_value=0xc0; } else if(DDram_value>=0xcf) { DDram_value=0xcf; } lcd_wr_con(DDram_value); lcd_wr_data(table[10]); } else if(keycode==0x0b)//按下星* { uchar i,j; j=0xc0; for(i=0;i<=15;i++) { lcd_wr_con(j); lcd_wr_data(table[10]); j++; } DDram_value=0xc0; } } } void lcd_delay()//LCD延时 { uchar y; for(y=0;y<0xff;y++) { ;} } void lcd_init(void)//LCD显示初始化 { lcd_wr_con(0x01); lcd_wr_con(0x06); lcd_wr_con(0x0c); lcd_wr_con(0x38); } void lcd_busy(void)//判断LCD是否繁忙 { P0=0xff; rs=0; rw=1; e=1; e=0; while(P0&0x80) { e=0; e=1; } lcd_delay(); } void lcd_wr_con(uchar c)//向LCD写命令 { lcd_busy(); e=0; rs=0; rw=0; P0=c; e=1; delay(10); e=0; lcd_delay(); } void lcd_wr_data(uchar d)//向LCD写数据 { lcd_busy(); e=0; rs=1; rw=0; P0=d; delay(10); e=1; e=0; lcd_delay(); } void delay(uint n)//延时 { uchar i; uint j; for(i=50;i>0;i--) for(j=n;j>0;j--); } uchar checkkey(void)// 检测有无按键按下 { uchar temp; P1=0xf0; temp=P1; temp=temp&0xf0; if(temp==0xf0) { return(0);//无按键按下 } else { return(1);//有按键按下 } } uchar keyscan(void) { uchar hanghao,liehao,keyvalue,buff; if(checkkey()==0)//无按键按下，返回0xff { return(0xff);//全为高电平 } else//否则扬声器发声 { uchar sound; for(sound=50;sound>0;sound--) { speaker=0; delay(1); speaker=1; delay(1); } P1=0x0f;// 初始化,行号P1.0-P1.3置为高电平，列号P1.4-P1.7为低电平。 buff=P1;//读取按键状态 if(buff==0x0e) { hanghao=0; } else if(buff==0x0d) { hanghao=3; }else if(buff==0x0b) { hanghao=6; }else if(buff==0x07) hanghao=9; } P1=0xf0;//行号P1.0-P1.3为0，列号P1.4-P1.7为1 buff=P1; if(buff==0xe0) { liehao=2; } else if(buff==0xd0) { liehao=1; }else if(buff==0xb0) { liehao=0;} else if(buff==0x70) { liehao=15; } keyvalue=hanghao+liehao; while(P1!=0xf0); return(keyvalue); } void lcd_wr_str(uchar *str) { while(*str) lcd_wr_data(*str++); } void getDate(uchar year,uchar month,uchar day) { uchar i; lcd_wr_con(0x80); lcd_wr_data(year/10+'0'); lcd_wr_data(year%10+'0'); lcd_wr_data('/'); lcd_wr_data((month/10)+'0'); lcd_wr_data((month%10)+'0'); lcd_wr_data('/'); lcd_wr_data((day/10)+'0'); lcd_wr_data((day%10)+'0'); for(i=0;i<16;i++) { lcd_wr_data(0x20); } } //滚动 void lcd_scroll(uchar *str) { uchar i,j,m; uchar len=strlen(str); for(m=0;m<2;m++){ for(i=0;i<len;i++) { lcd_init(); for(j=0;j<16;j++) { if(i+j>=len) { lcd_wr_data(' '); } else{ lcd_wr_data(str[i+j]); } } lcd_wr_con(0xc0); delay(500); }} }