WarningSystem.rar_ISD1760_beginners_数字录音机_数码管测距_近视

#include <STC12C5A.h> //包括一个51标准内核的头文件 #include "intrins.h" #define uchar unsigned char //定义一下方便使用 #define uint unsigned int #define ulong unsigned long #define NULL 0 //********管脚定义 sbit Trig = P3^3; //产生脉冲引脚 sbit Echo = P3^2; //回波引脚 sbit test = P0^0; //测试用引脚,灯表示超声波有无测距 sbit HC595_SCK = P0^4; sbit HC595_RCK = P0^5; sbit HC595_RST = P0^6; sbit HC595_DAT = P0^7; sbit beep=P1^3; //********变量定义 /***数字编码表0~9***/ unsigned char const seg[10] = {0xfc,0x60,0xda,0xf2,0x66,0xb6,0xbe,0xe0,0xfe,0xf6}; //段选 unsigned char const position[]={1,2,4,8}; //位选 uint distance[4]; //测距接收缓冲区 uchar temp,flag,outcomeH,outcomeL,i,k; //自定义寄存器 bit succeed_flag; //测量成功标志 uint b; //b定义为全局变量 unsigned char Count=0; /************************************************************************ 音乐编码存储区 **************************************************************************/ unsigned char const code SONG[] ={ //祝你平安 0x26,0x20,0x20,0x20,0x20,0x20,0x26,0x10,0x20,0x10,0x20,0x80,0x26, 0x20,0x30,0x20,0x30,0x20,0x39,0x10,0x30,0x10,0x30,0x80,0x26,0x0, 0x20,0x20,0x20,0x20,0x1c,0x20,0x20,0x80,0x2b,0x20,0x26,0x20,0x20, 0x20,0x2b,0x10,0x26,0x10,0x2b,0x80,0x26,0x20,0x30,0x20,0x30,0x20, 0x39,0x10,0x26,0x10,0x26,0x60,0x40,0x10,0x39,0x10,0x26,0x20,0x30, 0x20,0x30,0x20,0x39,0x10,0x6,0x10,0x26,0x80,0x26,0x20,0x2b,0x10, 0x2b,0x10,0x2b,0x20,0x30,0x10,0x39,0x10,0x26,0x10,0x2b,0x10,0x2b, 0x20,0x2b,0x40,0x40,0x20,0x20,0x10,0x20,0x10,0x2b,0x10,0x26,0x30, 0x30,0x80,0x18,0x20,0x18,0x20,0x26,0x20,0x20,0x20,0x20,0x40,0x26, 0x20,0x2b,0x20,0x30,0x20,0x30,0x20,0x1c,0x20,0x20,0x20,0x20,0x80, 0x1c,0x20,0x1c,0x20,0x1c,0x20,0x30,0x20,0x30,0x60,0x39,0x10,0x30, 0x10,0x20,0x20,0x2b,0x10,0x26,0x10,0x2b,0x10,0x26,0x10,0x26,0x10, 0x2b,0x10,0x2b,0x80,0x18,0x20,0x18,0x20,0x26,0x20,0x20,0x20,0x20, 0x60,0x26,0x10,0x2b,0x20,0x30,0x20,0x30,0x20,0x1c,0x20,0x20,0x20, 0x20,0x80,0x26,0x20,0x30,0x10,0x30,0x10,0x30,0x20,0x39,0x20,0x26, 0x10,0x2b,0x10,0x2b,0x20,0x2b,0x40,0x40,0x10,0x40,0x10,0x20,0x10, 0x20,0x10,0x2b,0x10,0x26,0x30,0x30,0x80,0x00 }; //********函数声明 void conversion(uint temp_data); void delay_us(unsigned int t); void delay_20us(); void delay_ms(unsigned int time); void delay_isd(uint time); void delay(int x); void HC595_send_byte(unsigned char byte); void SMG_ShowNum(unsigned char num); void SMG_Display(unsigned int dat); void Delay(unsigned char x); void beeping(unsigned char frequence,unsigned char length); void Play_Song(); void main(void) // 主程序 { uint distance_data,a; uchar CONT_1; unsigned int num=0; //数码管的参量 unsigned char time=0; uint distance[20]; //距离缓冲数组 i=0; k=0; flag=0; Trig=0; //首先拉低脉冲输入引脚 TMOD=0x11; //定时器0，定时器1，16位工作方式 IT0=0; //由高电平变低电平，触发外部中断IT0=0,INT0/P3.2引脚上的低电平可触发外部中断0 ET0=1; //打开定时器0中断 TH0 = 0xB1; TL0 = 0xE0; EX0=0; //关闭INT0外部中断 EA=1; //打开总中断0 //对数码管驱动初始化 P0=0X00; //初始化低四位为高电平，使能四位数码管 HC595_RST=0; //HC595的复位端，不能让他复位 while(1) //程序循环 { EA=0; Trig=1; delay_20us(); Trig=0; //产生一个20us的脉冲，在Trig引脚 while(Echo==0); //等待Echo回波引脚变高电平 succeed_flag=0; //清测量成功标志 EX0=1; //打开外部中断 TH1=0; //定时器1清零 TL1=0; //定时器1清零 TF1=0; //定时器1中断请求标志位清0 TR1=1; //启动定时器1 EA=1; while(TH1 < 30); //等待测量的结果，周期65.535毫秒（可用中断实现） TR1=0; //关闭定时器1 EX0=0; //关闭外部中断 if(succeed_flag==1) { distance_data=outcomeH; //测量结果的高8位 distance_data<<=8; //放入16位的高8位 distance_data=distance_data|outcomeL;//与低8位合并成为16位结果数据 distance_data=distance_data; distance_data=(distance_data*1.7)/100; //微秒的单位除以58等于厘米 } //Y米=（X秒*344）/2 if(succeed_flag==0) { distance_data=0; //没有回波则清零 test = !test; //测试灯变化 } distance[i]=distance_data; i++; if(i==19) { /* uint min,t,k,j; //选择排序法，将距离数据排序 for(k=0;k<9;k++) { t=k; for(j=k+1;j<9;j++) if(distance[j]<distance[t]) t=j; if(t!=k) { min=distance[k]; distance[k]=distance[t]; distance[t]=min; } } distance_data=(distance[4]+distance[5])/2; //取中间平均值 */ uint k,sum=0; for(k=0;k<20;k++) sum=sum+distance[k]; distance_data=sum/20; a=distance_data; //距离变化时，数码管更新数据,减10校正 if(b==a) {CONT_1=0;} //数码管显示超声波测距} if(b!=a) CONT_1++; if(CONT_1>=2) { CONT_1=0; b=a; conversion(b); } i=0; } } } /**********************************平均距离*********************************/ /********************************延迟函数*******************************/ void delay_us(unsigned int t) { while(t--) { _nop_();_nop_();_nop_();_nop_();_nop_();_nop_(); } } void delay_20us(unsigned int t) { delay_us(20); } //延时函数(24M晶振下延时1ms) void delay_ms(unsigned int time) { unsigned int t; for(;time>0;time--) { t = 1500; while(t--); } } void Delay(unsigned char x) { unsigned char i,j; for( i =0;i < x;i++ )for( j =0;j<36;j++ ); } /************************************定时器0中断**************************/ //****************************************************************** INTO_() interrupt 0 // 外部中断是0号 { outcomeH =TH1; //取出定时器的值 outcomeL =TL1; //取出定时器的值 succeed_flag=1; //至成功测量的标志 EX0=0; //关闭外部中断 } timer0() interrupt 1 // 定时器0中断是1号 { TH0 = 0xB1; TL0 = 0xE0; //24MZ晶振，10ms Count++; //长度加1 } /**********************数码管驱动与显示模块**********************/ //向HC595发送一个字节 void HC595_send_byte(unsigned char byte) { unsigned char i,temp; for(i=0;i<=7;i++) { temp = byte&1<<i; if(temp) { HC595_DAT = 1; //数据线 } else { HC595_DAT=0; } //下面是写时序 HC595_SCK=1; //SCK(11脚） HC595_SCK=0; } HC595_RCK=0; //RCK(12脚) HC595_RCK=1; } //显示一个数num void SMG_ShowNum(unsigned char num) { HC595_send_byte(seg[num]); } void SMG_Display(unsigned int dat) { SMG_ShowNum(dat/1000); P0 = (P0&0xf0)|position[0]; delay_ms(2); SMG_ShowNum((dat%1000)/100); P0 = (P0&0xf0)|position[1]; delay_ms(2); SMG_ShowNum(dat%100/10); P0 = (P0&0xf0)|position[2]; delay_ms(2); SMG_ShowNum(dat%10); P0 = (P0&0xf0)|position[3]; delay_ms(2); } //显示数据转换程序 void conversion(uint temp_data) { unsigned i=0; EX0=0; //关闭INT0外部中断=0; delay_us(30); for(i=0;i<300;i++) { SMG_Display(temp_data); //数码管显示超声波测距 } if(temp_data<30){Play_Song(); } //距离小于30cm报警 EX0=1; //关闭INT0外部中断=1; } /********************************************************************************* 放音子函数 参数：frequence 决定音乐声调的变量 length 决定某个音调播放的时间 *********************************************************************************/ void beeping(unsigned char frequence,unsigned char length) { TR0=1; while(1) { beep = !beep;