具有实时语音播报功能的超声波测距仪(C程序).doc

此文档收集于网络，如有侵权，请联系网站删除#include /调用单片机头文件 #define uchar unsigned char /无符号字符型 宏定义变量范围0255#define uint unsigned int /无符号整型 宏定义变量范围065535#include /数码管段选定义 0 1 2 3 4 56 7 8 9uchar code smg_du=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90, 0x88,0x83,0xc6,0xa1,0x86,0x8e,0xff; /断码/数码管位选定义uchar code smg_we=0xe0,0xd0,0xb0,0x70;uchar dis_smg8 =0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8;sbit smg_we1 = P34; /数码管位选定义sbit smg_we2 = P35;sbit smg_we3 = P36;sbit smg_we4 = P37;sbit c_send = P32;/超声波发射sbit c_recive = P33;/超声波接收uchar smg_i = 3; /显示数码管的个位数bit flag_300ms ;long distance; /距离uint set_d; /距离uchar flag_csb_juli; /超声波超出量程uint flag_time0; /用来保存定时器0的时候的/*语音模块控制IO口的定义*/sbit VRST = P23; sbit VBUSY= P27;sbit VSDA = P26; sbit VCS = P25; sbit VSCL = P24;uchar yujing3;/* 语音地址的安排0 - 9 ： 对应数字0到90b : 点0c : 米0d : 已超出量程*/*1ms延时函数*/void delay_1ms(uint q)uint i,j;for(i=0;iq;i+)for(j=0;j120;j+);/*小延时函数*/void delay_us (unsigned int us)while(us-)_nop_();/*三线发码子程序*/void Send_threelines(unsigned char addr) unsigned char i;VRST=0;delay_1ms(5);VRST=1;delay_1ms(20); /* 复位拉高20ms*/VCS=0;delay_1ms(5); /* 片选拉低5ms */ for(i=0;i=1;delay_us(150); /* 150us */VSCL=1;delay_us(150); /* 150us */VCS=1;delay_1ms(200);while(VBUSY = 0); /忙等待/*数码位选函数*/void smg_we_switch(uchar i)switch(i)case 0: smg_we1 = 0; smg_we2 = 1; smg_we3 = 1; smg_we4 = 1; break;case 1: smg_we1 = 1; smg_we2 = 0; smg_we3 = 1; smg_we4 = 1; break;case 2: smg_we1 = 1; smg_we2 = 1; smg_we3 = 0; smg_we4 = 1; break;case 3: smg_we1 = 1; smg_we2 = 1; smg_we3 = 1; smg_we4 = 0; break;/*数码显示函数*/void display()static uchar i; i+;if(i = smg_i)i = 0;smg_we_switch(i); /位选P1 = dis_smgi; /段选 /*小延时函数*/void delay()_nop_(); /执行一条_nop_()指令就是1us_nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); /*超声波测距程序*/void send_wave()c_send = 1; /10us的高电平触发 delay();c_send = 0; TH0 = 0; /给定时器0清零TL0 = 0;TR0 = 0; /关定时器0定时while(!c_recive); /当c_recive为零时等待TR0=1;while(c_recive) /当c_recive为1计数并等待flag_time0 = TH0 * 256 + TL0;if(flag_time0 40000) /当超声波超过测量范围时，显示3个888TR0 = 0;flag_csb_juli = 2;distance = 888;break ;else flag_csb_juli = 1;if(flag_csb_juli = 1)TR0=0; /关定时器0定时distance =flag_time0; /读出定时器0的时间distance *= 0.017; / 0.017 = 340M / 2 = 170M = 0.017M 算出来是米if(distance 500) /距离 = 速度 * 时间distance = 888; /如果大于3.8m就超出超声波的量程 /*处理距离函数*/void smg_display()dis_smg0 = smg_dudistance % 10; /距离取出来放在缓冲区了dis_smg1 = smg_dudistance / 10 % 10;dis_smg2 = smg_dudistance / 100 % 10 & 0x7f;yujing0 = distance % 10; /距离放到语音的变量里yujing1 = distance / 10 % 10;yujing2 = distance / 100 % 10;/*定时器0、定时器1初始化*/void time_init() EA = 1; /开总中断TMOD = 0X11; /定时器0、定时器1工作方式1ET0 = 0; /关定时器0中断 TR0 = 1; /允许定时器0定时ET1 = 1; /开定时器1中断 TR1 = 1; /允许定时器1定时/*主函数*/void main()static uchar value = 5;P0 = P1 = P2 = P3 = 0xff; /初始化单片机IO口为高电平send_wave();/测距离函数smg_display();/处理距离显示函数time_init();/定时器初始化程序send_wave();/测距离函数send_wave();/测距离函数while(1) if(flag_300ms = 1)flag_300ms = 0;send_wave();/测距离函数smg_display(); /处理距离显示函数value +;if(value 10)/3秒钟自动播放一次value = 0;if(distance = 888)Send_threelines(0x0d); /语音播放已超出量程elseSend_threelines(yujing2); /语音播放Send_threelines(0x0b);Send_threelines(yujing1);Send_threelines(yujing0);Send_threelines(0x0c);/*定