CT107D 测试程序3.docx

超声波测距定时器2捕获超声波测距外部中断捕获温度显示 DS18B20超声波测距定时器2捕获#include /包括一个52标准内核的头文件#define BYTE unsigned char #define uint unsigned int#define ulong unsigned longsbit LS138A=P25;sbit LS138B=P26;sbit LS138C=P27;BYTE code disp_duan10=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f;/数码管0-9BYTE code disp_wei=0x01,0x02,0x04,0x08;BYTE ledout4,flag,i=0;bit succeed_flag; /测量成功标志ulong distance_data,sum;ulong distance_data_buff2;void sys_ini() LS138C=1;LS138B=0;LS138A=1;P0=0; /关蜂鸣器T2=0; /首先拉低脉冲输入引脚TMOD=0x01; /定时器0,16位工作方式TR0=1; /启动定时器0ET0=1; /打开定时器溢出0中断 ET2=1; /打开定时器2溢出中断CP_RL2=1; /定时器2进行捕获模式EXEN2=1; /打开定时器2捕获中断EA=1; /打开总中断void main(void) / 主程序 sys_ini();while(1) uint x=0; EA=0; T2=1; x+;x+;x+;x+;x+;x+;x+; /14us T2=0; /产生一个20us的脉冲，在Trig引脚 while(!T2EX); /等待T2EX回波引脚变高电平 succeed_flag=0; /清测量成功标志 EXEN2=1; /打开定时器2外部捕获中断 TH2=0; /定时器2清零 TL2=0; /定时器2清零 TF2=0; /溢出标志 TR2=1; /启动定时器2 EA=1; while(!TF2);/溢出标志 等待测量的结果，周期65.535毫秒 TR2=0; /关闭定时器2 if(succeed_flag=1) distance_data=RCAP2H; /测量结果的高8位 distance_data=8; /放入16位的高8位 distance_data=distance_data|RCAP2L;/与低8位合并成为16位结果数据 distance_data=distance_data *1000/5813; distance_data_buffi=distance_data;sum+=distance_data_buffi;i+;if(i=2) i=0; distance_data=sum/2; ledout0=(disp_duandistance_data%10000/1000)&0x7f; ledout1=disp_duandistance_data%1000/100; ledout2 =disp_duandistance_data%100/10; ledout3=disp_duandistance_data%10; sum=0; /*/定时器0中断,用做显示void timer0() interrupt 1 / 定时器0中断是1号 TH0=0xfd; /写入定时器0初始值 TL0=0x77; LS138C=1;LS138B=1;LS138A=1;P0=ledoutflag; LS138C=1;LS138B=1;LS138A=0;P0=disp_weiflag; flag+; if(flag=4) flag=0; /*/定时器1中断,用做超声波测距计时void timer2() interrupt 5 / 定时器0中断是1号 if(TF2) TH2=0;TL2=0; else if(EXF2) succeed_flag=1; /测量成功 EXEN2=0; /关闭 EXF2=0; 超声波测距外部中断捕获/*将P11与P32短接*/#include /包括一个52标准内核的头文件#define BYTE unsigned char #define uint unsigned int#define ulong unsigned longsbit Trig = P10; /产生脉冲引脚sbit Echo = P32; /回波引脚sbit test = P06; /测试用引脚sbit HC138A=P25;sbit HC138B=P26;sbit HC138C=P27;BYTE code disp_duan10=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f;/数码管0-9BYTE code disp_wei=0x01,0x02,0x04,0x08;BYTE temp,flag,outcomeH,outcomeL; /自定义寄存器BYTE ledout4,flag,i=0;bit succeed_flag; /测量成功标志ulong distance_data,sum;ulong distance_data_buff3;uint temp_data;void sys_ini() HC138C=1;HC138B=0;HC138A=1;P0=0; /关蜂鸣器 flag=0;test =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TR0=1; /启动定时器0 IT0=0; /由高电平变低电平，触发外部中断ET0=1; /打开定时器0中断 ET1=1; /打开定时器1中断EX0=0; /关闭外部中断EA=1; /打开总中断0void main(void) / 主程序 sys_ini();while(1) /程序循环uint x=0; EA=0; Trig=1; x+;x+;x+;x+;x+;x+;x+; /14us Trig=0; /产生一个20us的脉冲，在Trig引脚 while(!Echo); /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; /溢出标志 TR1=1; /启动定时器1 EA=1; while(!TF1);/溢出标志 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 *1000/5813; distance_data_buffi=distance_data;sum+=distance_data_buffi;i+;if(i=3) i=0; distance_data=sum/3; ledout0=(disp_duandistance_data%10000/1000)&0x7f; ledout1=disp_duandistance_data%1000/100; ledout2 =disp_duandistance_data%100/10; ledout3=disp_duandistance_data%10; sum=0; /*/外部中断0，用做判断回波电平void 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 /*/定时器0中断,用做显示void timer0() interrupt 1 / 定时器0中断是1号 TH0=0xfd; /写入定时器0初始值 TL0=0x77; HC138C=1;HC138B=1;HC138A=1;P0=ledoutflag; HC138C=1;HC138B=1;HC138A=0;P0=disp_weiflag; flag+; if(flag=4) flag=0; /*/定时器1中断,用做超声波测距计时void timer1() interrupt 3 / 定时器0中断是1号TH1=0;TL1=0;温度显示 DS18B20#include#include#define uchar unsigned char#define uint unsigned intsbit DQ=P14;uchar code smg_du=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90;uchar code smg_we=0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80;uchar code xiaotable=0,1,1,2,3,3,4,4,5,6,6,7,8,8,9,9; /小数部分的二进制对应的实际温度 四舍五入uchar temp,tflag1,tflag2,weflag,xiao;void delayus(uint x);void delayms(uint x);void init_ds18b20();void wr_ds18b20(uchar byt);uchar re_ds18b20();uchar re_temp(); void display(uchar we,uchar du);void delayus(uint x) /延时25+(x-1)*9while(x-); void delayms(uint x)uchar i;while(x-)for(i=0;i120;i+);void init_ds18b20()DQ=1;delayus(4); /52usDQ=0;delayus(80); / 延时大于480usDQ=1;delayus(4);void wr_ds18b20(uchar byt)uchar i;for(i=0;i=1;uchar re_ds18b20() uchar i,byt; for(i=0;i=1;DQ=1; if(DQ)byt|=0x80;delayus(4); return byt;uchar re_temp()uchar low,high;uchar temp;init_ds18b20();delayms(1);wr_ds18b20(0xcc);wr_ds18b20(0x44); /跳过ROM 温度转换init_ds18b20();delayms(1);wr_ds18b20(0xcc);wr_ds18b20(0xbe);/跳过ROM读暂存器low=re_ds18b20();high=re_ds18b20();xiao=low&0x0f;temp= high4);return temp;void display(uchar we,uchar du)P0=0xff;P2|=0xe0;P2&=0x1f;P0=smg_dudu;P2|=0xe0;P2&=0x1f;P0=smg_wewe;P2|=0xc0;P2&=0x3f;void main()P0=0;P2=0xa0;P2=0;/关蜂鸣器TMOD=0x02;TH0=0X06;TL0=0X06;ET0=1;TR0=1;EA=1;while(1);void to() interrupt 1tflag1+;tflag2+;if(tfla