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怎么实现题目的第四个功能,前三个已经实现了,有没有大佬会,再原有的基础上实现第四个功能 或者不用那么全,只是能通过串口发送一个字母然后改变一下频率也行,实在是不会了
单片机源程序如下:
- #include<reg51.h>
- #include<intrins.h>
- #define uchar unsigned char
- #define uint unsigned int
- sbit s1=P1^0;
- sbit s2=P1^1;
- sbit s3=P1^2;
-
- sbit lcdrs=P1^6;
- sbit lcden=P1^7;
- char num,boxing,u;
- int pinlv=50,bujin=10,bujin1=10;
- uchar geshu=1;
- uchar code table[]="0123456789";
- uchar code table1[]="pinlv:boxing:";
- unsigned long int m;
- int n=0;
- float hc=0;
- int a,b,h,num1;
- uchar code sin[64]={
- 135,145,158,167,176,188,199,209,218,226,234,240,245,249,252,254,254,253,251,247,243,237,230,222,213,204,193,182,170,158,
- 146,133,121,108,96,84,72,61,50,41,32,24,17,11,7,3,1,0,0,2,5,9,14,20,28,36,45,55,66,78,90,102,114,128
- }; //ÕyÏò2¨è¡Âë
- void delay(uint xms)
- {
- int a,b;
- for(a=xms;a>0;a--)
- for(b=110;b>0;b--);
- }
- void write_com(uchar com)
- {
- lcdrs=0;
- P0=com;
- delay(1);
- lcden=1;
- delay(1);
- lcden=0;
- }
- void write_date(uchar date)
- {
- lcdrs=1;
- P0=date;
- delay(1);
- lcden=1;
- delay(1);
- lcden=0;
- }
- void init_lcd()
- {
- lcden=0;¼
- write_com(0x0f);
- write_com(0x38);
- write_com(0x01);
- write_com(0x0c);
- write_com(0x06);
- write_com(0x80);
- }
- void initclock()
- {
- uint i;
- TMOD=0x01;
- TH0=a;
- TL0=b;
- EA=1;
- ET0=1;
- TR0=1;
- for(i=6;i<13;i++)
- {
- write_date(table1[i]);
- delay(2);
- }
- write_com(0x80+0x40);
- for(i=0;i<6;i++)
- {
- write_date(table1[i]);
- delay(2);
- }
- write_com(0x80+7);
- write_date('s');
- write_date('i');
- write_date('n');
- write_date(' ');
- write_date(' ');
- write_date(' ');
- write_date(' ');
- write_com(0x80+0x40+0xa);
- write_date(' ');
- write_date('1');
- write_date('0');
- write_date('H');
- delay(2);
- write_date('Z');
- delay(2);
- }
- void display()
- {
- uchar wan,qian,bai,shi,ge;
- uint a=0;
- a=pinlv;
- wan=a/10000;
- qian=a/1000%10;
- bai=a/100%10;
- shi=a%100/10;
- ge=a%100%10;
- write_com(0x80+0x40+8);
- write_date(table[wan]);
- delay(2);
- write_date(table[qian]);
- delay(2);
- write_date(table[bai]);
- delay(2);
-
- write_date(table[shi]);
- delay(2);
- write_date(table[ge]);
- delay(2);
- write_date('H');
- delay(2);
- write_date('Z');
- delay(2);
- if(boxing==0)
- {
- write_com(0x80+7);
- write_date('s');
- write_date('i');
- write_date('n');
- write_date(' ');
- write_date(' ');
- write_date(' ');
- write_date(' ');
- }
- }
- uchar keyscan()
- {
- // if(P1&0x0F==0x0F) return 0;
- if(s1==0)
- {
- EA=0;
- delay(1);
- if(s1==0)
- {
- while(!s1);
- pinlv+=bujin;
- if(pinlv>30000)
- {
- pinlv=30000;
- }
- geshu=pinlv/120+1;
- if(pinlv>960)
- {
- geshu=8;
- bujin=100;
- bujin1=100;
- }
- if(pinlv>1080) geshu=10;
- if(pinlv>2000) geshu=11;
- hc=15625/pinlv;
- m=hc*geshu;
- m-=54;
- m/=15;
-
- EA=1;
- display();
-
- }
- }
- if(s2==0)
- {
-
- delay(1);
- if(s2==0)
- {
- EA=0;
- while(!s2);
- pinlv-=bujin;
- if(pinlv<0)
- {
- pinlv=0;
- }
- geshu=pinlv/120+1;
- if(pinlv>960)
- {
- geshu=8;
- bujin=100;
- bujin1=100;
- }
- if(pinlv>1080) geshu=10;
- if(pinlv>2000) geshu=11;
- if(pinlv<=3100)
- {hc=15625/pinlv;
- m=hc*geshu;
- m-=54;
- m/=15;}
- else
- {
- m=65276+(pinlv-480);
- }
- display();
- EA=1;
- }
- }
- if(s3==0)
- {
- delay(1);
- if(s3==0)
- {
- EA=0;
- while(!s3);
- if(pinlv!=10)
- {
- pinlv=10;
- hc=15625/pinlv;
- m=hc*geshu;
- m-=54;
- m/=15;
- }
- else if(pinlv==10)
- {
- pinlv=100;
- hc=15625/pinlv;
- m=hc*geshu;
- m-=54;
- m/=15;
- }
-
- display();
- EA=1;
- }
- }
- return 1;
- }
- void main()
- {
-
- init_lcd();
- hc=15625/pinlv;
- m=hc*geshu;
- m-=54;
- m/=15;
- initclock();
- display();
- // csda=0;
- // wr=0;
- while(1)
- {
-
- switch(boxing)
- {
- case 0: P2=sin[u];
- break;
- }
- u+=geshu;
- n=m;
- if(u>=64)
- {
- u=0;
- }
- while(n-->0);
- }
- }
- void T0_time()interrupt 1
- {
-
-
- // TH0=a;
- // TL0=b;
- TH0=0;
- TL0=0;
- if(h==0)
- {
- keyscan();
- }
- }
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