標(biāo)題: 51單片機(jī)計(jì)算器的制作 [打印本頁]
作者: a5d5d8e8e    時(shí)間: 2016-12-22 09:27
標(biāo)題: 51單片機(jī)計(jì)算器的制作


  1. #include <reg51.h>

  3. #include <math.h>

  5. #define uchar unsigned char

  7. #define uint unsigned int

  9. //---------定義引腳--------------------

  11. bit clr=0;

  13. bit ok=0;

  15. bit xiaoshu=0;

  17. bit jiego=0;

  19. bit first_1=1;

  21. bit first_2=1;

  23. sbit dout = P3^2;

  25. sbit load = P2^0;

  27. sbit din = P2^1;

  29. sbit dclk = P2^2;

  31. sbit beer=P0^1;

  33. sbit LCD1602_RS=P2^3;

  35. sbit LCD1602_RW=P2^4;

  37. sbit LCD1602_E=P2^5;

  39. //---------定義變量--------------------

  41. uchar ch451_key=0xff;

  43. uchar yun_sign;

  45. uchar xiabiao=0;

  47. uchar tab[32];

  49. uchar tab1[]={"welcome to use!"};

  51. uchar tab2[]={" make by JunRu!"};

  53. uchar tab3[]={"ERR0R"};

  55. float opr_1=0,opr_temp=0,end=0,a;

  57. //---------聲明函數(shù)--------------------

  59. void ch451_init(void); //CH451初始化

  61. void ch451_write(uint command);//寫命令或數(shù)據(jù)到ch451

  63. uchar ch451_read(void); //讀按鍵值

  65. uchar get_char(void);

  67. void LCD_init(void);//初始化；

  69. void delay(unsigned int k);//延時(shí)程序

  71. void LCD_inter_command(unsigned char command);//寫入控制字

  73. void LCD_inter_dat(unsigned char dat);//寫入要顯示的數(shù)據(jù)

  75. void set_xy(unsigned char x,unsigned char y);//找地址

  77. void write(unsigned char date);//寫入字符

  79. void lcdbusy();//查忙時(shí)

  81. void display(void);

  83. void spec(void);

  85. void get_end(void);

  87. void hun_he(uchar n);

  89. //-------- 主函數(shù)----------------------

  91. void main()

  93. {

  95. uchar i;

  97. LCD_init();//LCD初始化；

  99. ch451_init();//CH451初始化

  101. EA = 1;//打開中斷

  103. LCD_inter_command(0x01);//清屏

  105. for(i=0;i<=14;i++)

  107. {

  109. LCD_inter_dat(tab1[i]);

  111. beer=0;

  113. delay(4000);//延時(shí)

  115. beer=1;

  117. }

  119. LCD_inter_command(0xc0);//從第二行開始顯示

  121. for(i=0;i<=14;i++)

  123. {

  125. LCD_inter_dat(tab2[i]);

  127. beer=0;

  129. delay(4000);//延時(shí)

  131. beer=1;

  133. }

  135. delay(0xffff);

  137. delay(0xffff);

  139. LCD_inter_command(0x01);

  141. while(1)

  143. {

  145. if(ok)

  147. {

  149. display();

  151. ok=0;clr=1;

  153. }

  155. }

  157. }

  159. //----------子函數(shù)--------------------

  161. void hun_he(uchar n)

  163. {int j;

  165. switch(n)

  167. {

  169. case '+':opr_temp=opr_temp+opr_1;break;

  171. case '-':opr_temp=opr_temp-opr_1;break;

  173. case '*':opr_temp=opr_temp*opr_1;break;

  175. case '/':

  177. {

  179. if(a==0)//減數(shù)為零顯錯(cuò)

  181. { LCD_inter_command(0xc0);

  183. for(j=0;j<=4;j++)

  185. {

  187. LCD_inter_dat(tab3[j]);

  189. beer=0;

  191. delay(4000);//延時(shí)

  193. beer=1;

  195. }

  197. }

  199. else

  201. {opr_temp=opr_temp/opr_1;}

  203. break;

  205. }

  207. default:break;}

  209. }

  211. void ch451_init(void)//CH451初始化

  213. {

  215. EX0 = 1;

  217. din = 0;

  219. din = 1;

  221. ch451_write(0x403); //開顯示

  223. ch451_write(0x580); //BCD譯碼方式

  225. }

  227. void ch451_write(uint command)//寫命令或數(shù)據(jù)到ch451

  229. { uchar i;

  231. EX0 = 0;

  233. load = 0;

  235. for(i=0;i<12;i++)

  237. {

  239. din = command&1;

  241. dclk = 0;

  243. command>>=1;

  245. dclk = 1;

  247. }

  249. load = 1;

  251. EX0 = 1;

  253. }

  255. uchar ch451_read(void)//讀

  257. 按鍵值

  259. { uchar key=0x07;

  261. uchar i;

  263. EX0=0;

  265. load = 0;

  267. for(i=0;i<4;i++) //將0111讀入

  269. {

  271. din = key &1;

  273. dclk = 0;

  275. key>>=1;

  277. dclk =1;

  279. }

  281. load = 1;

  283. key = 0;

  285. for(i=0;i<7;i++) //從CH451讀出按鍵值

  287. {

  289. key<<=1;

  291. key|= dout;

  293. dclk =0;

  295. dclk =1;

  297. }

  299. EX0 =1;

  301. return key;

  303. }

  305. void EX0_ISR(void)interrupt 0 //中斷程序

  307. {

  309. uchar temp;

  311. ch451_key=ch451_read(); //將讀出的按鍵值賦給變量

  313. spec();

  315. if(clr) {LCD_inter_command(0x01);clr=0;}

  317. temp=get_char();

  319. if(temp){tab[xiabiao++]=temp; LCD_inter_dat(temp);}

  321. if(xiabiao>=16)LCD_inter_command(0xc0);//若大于16，則從第2行開始顯示

  323. if(ok) get_end();

  325. beer=0;

  327. delay(3000);

  329. beer=1;

  331. }

  333. uchar get_char(void)

  335. {

  337. uchar dis=0;

  339. uint temp=0,temp1=0;

  341. switch(ch451_key)

  343. {

  345. case 0x40:dis='1';break;

  347. case 0x41:dis='2';break;

  349. case 0x42:dis='3';break;

  351. case 0x48:dis='4';break;

  353. case 0x49:dis='5';break;

  355. case 0x4A:dis='6';break;

  357. case 0x50:dis='7';break;

  359. case 0x51:dis='8';break;

  361. case 0x52:dis='9';break;

  363. case 0x58:dis='0';break;

  365. case 0x43:dis='+';break;

  367. case 0x4B:dis='-';break;

  369. case 0x53:dis='x';break;

  371. case 0x5B:dis='/';break;

  373. case 0x44:dis='!';break;

  375. case 0x5A:dis='=';

  377. ok=1; //遇到“=”，開始運(yùn)算

  379. break;

  381. case 0x59:dis='.';break; //小數(shù)點(diǎn)

  383. case 0x5C: //刪除鍵

  385. LCD_inter_command(0x01);

  387. xiabiao=0;

  389. break;

  391. default: break;

  393. }

  395. return dis;

  397. }

  399. void spec(void) //特殊功能鍵

  401. {

  403. switch(ch451_key)

  405. {

  407. case 0x4C:LCD_inter_command(0x10);{if(xiabiao>0)xiabiao-=1;}break; //左移

  409. case 0x54:LCD_inter_command(0x14);{xiabiao+=1;}break; //右移

  411. default:break;

  413. }

  415. }

  417. void delay(unsigned int k)//延時(shí)程序

  419. {

  421. while (k--);

  423. }

  425. void LCD_inter_command(unsigned char command)//寫入控制字

  427. {

  429. delay(5000);

  431. LCD1602_RS=0;

  433. LCD1602_RW=0;

  435. LCD1602_E=1;

  437. P1=command;

  439. LCD1602_E=0;

  441. lcdbusy();

  443. }

  445. void LCD_init(void)//初始化；

  447. {delay(5000);

  449. LCD_inter_command(0x01);//清屏

  451. delay(5000);

  453. LCD_inter_command(0x38);//設(shè)置為8位的數(shù)據(jù)接口，兩行顯示，5、7點(diǎn)字符

  455. delay(5000);

  457. LCD_inter_command(0x0E);//顯示打開，光標(biāo)開并閃爍

  459. delay(5000);

  461. }

  463. void LCD_inter_dat(unsigned char dat)//寫入要顯示的數(shù)據(jù)

  465. {

  467. delay(5000);

  469. LCD1602_RS=1;

  471. LCD1602_RW=0;

  473. LCD1602_E=1;

  475. P1=dat;

  477. LCD1602_E=0;

  479. lcdbusy();

  481. }

  483. void lcdbusy()//查忙

  485. {

  487. P1=0xFF;

  489. LCD1602_RS=0;

  491. LCD1602_RW=1;

  493. LCD1602_E=1;

  495. while((P1&0x80)==1);

  497. }

  499. void display(void) //轉(zhuǎn)化在LCD上顯示計(jì)算結(jié)果

  501. {

  503. int temp=end; //浮點(diǎn)數(shù)

  505. int i;

  507. uint xiao_temp;

  509. uint xx; //浮點(diǎn)數(shù)的整數(shù)部分

  511. if (end>-32769&&end<32768)

  513. {

  515. xx=fabs(end);

  517. xiao_temp=(fabs(end)-xx)*1000;//取出浮點(diǎn)數(shù)的小數(shù)部分

  519. LCD_inter_command(0xc0);

  521. if(end<0) LCD_inter_dat('-'

  523. );beer=0;delay(4000); beer=1;//判斷是否為負(fù)數(shù)，若是則顯示負(fù)號(hào)

  525. if(xx>9999) LCD_inter_dat((xx/10000)%10+'0'); beer=0;delay(4000);beer=1;

  527. if(xx>999) LCD_inter_dat((xx/1000)%10+'0');beer=0;delay(4000);beer=1; //在LCD上顯示千位的數(shù)

  529. if(xx>99)LCD_inter_dat((xx/100)%10+'0'); beer=0;delay(4000);beer=1;//百位

  531. if(xx>9)LCD_inter_dat((xx/10)%10+'0');beer=0;delay(4000); beer=1;//十位

  533. LCD_inter_dat(xx%10+'0');beer=0;delay(4000); beer=1;//個(gè)位

  535. if(xiao_temp!=0) //顯示小數(shù)部分

  537. {

  539. LCD_inter_dat('.');beer=0;delay(4000);beer=1;

  541. LCD_inter_dat((xiao_temp/100)%10+'0');beer=0;delay(4000);beer=1;

  543. LCD_inter_dat((xiao_temp/10)%10+'0');beer=0;delay(4000);beer=1;

  545. LCD_inter_dat(xiao_temp%10+'0');beer=0;delay(4000);beer=1;

  547. }

  549. }

  551. else {LCD_inter_command(0xc0);//從第二行開始顯示

  553. for(i=0;i<=4;i++)

  555. { LCD_inter_dat(tab3[i]);

  557. beer=0;

  559. delay(4000);//延時(shí)

  561. beer=1;

  563. }

  565. }

  567. }

  569. void get_end(void)//計(jì)算子程序

  571. { float xiaoshu=1;

  573. uchar fu_flag=0;

  575. uchar xiao_flag=0;

  577. uchar lianji_sign;

  579. uchar i=0;

  581. uchar j;

  583. uchar n;//正負(fù)標(biāo)記符

  585. while(i<=xiabiao)

  587. {

  589. while(tab[i]<=0x39&&tab[i]>=0x30)

  591. {

  593. n=0;

  595. opr_1*=10;

  597. opr_1+=tab[i++]-0x30;

  599. n='+';

  601. }

  603. switch(tab[i])

  605. {

  607. case '.': xiao_flag=1;break;//遇到小數(shù)點(diǎn)跳到“if(xiao_flag)”里

  609. case '!': fu_flag=1;break;

  611. case '+': xiaoshu=1;yun_sign='+';if(opr_temp==0){end=opr_temp=opr_1;}else hun_he(lianji_sign);opr_1=0;lianji_sign='+'; break;

  613. case '-': xiaoshu=1;yun_sign='-';if(opr_temp==0){end=opr_temp=opr_1;}else hun_he(lianji_sign);opr_1=0;lianji_sign='-'; break;

  615. case 'x': xiaoshu=1;yun_sign='x';if(opr_temp==0){end=opr_temp=opr_1;}else hun_he(lianji_sign);opr_1=0;lianji_sign='*';break;

  617. case '/': xiaoshu=1;yun_sign='/';if(opr_temp==0){end=opr_temp=opr_1;}else hun_he(lianji_sign);a=opr_1;opr_1=0;lianji_sign='/';break;

  619. case '=':

  621. switch(yun_sign)//進(jìn)行運(yùn)算

  623. {

  625. case '+':end=opr_temp+opr_1;break;

  627. case '-':end=opr_temp-opr_1;break;

  629. case 'x':end=opr_temp*opr_1;break;

  631. case '/':{

  633. if(a==0)//減數(shù)為零顯錯(cuò)

  635. { LCD_inter_command(0xc0);

  637. for(j=0;j<=4;j++)

  639. {

  641. LCD_inter_dat(tab3[j]);

  643. beer=0;

  645. delay(4000);//延時(shí)

  647. beer=1;

  649. }

  651. }

  653. else

  655. {end=opr_temp/opr_1;}

  657. break;

  659. }

  661. default:break;

  663. }

  665. ok=1;//開始進(jìn)行顯示，標(biāo)志位置1

  667. xiabiao=0;//小數(shù)的標(biāo)志位清零

  669. break;

  671. default:break;

  673. }

  675. i++;

  677. if(xiao_flag)//表示小數(shù)

  679. {

  681. while(tab[i]<=0x39&&tab[i]>=0x30)

  683. {

  685. xiaoshu*=0.1;

  687. switch(n)

  689. {

  691. case '+': opr_1=opr_1+(tab[i++]-0x30)*xiaoshu;break;

  693. case '-': opr_1=opr_1-(tab[i++]-0x30)*xiaosh

  695. u; break ;

  697. default:break; }

  699. xiao_flag=0;

  701. }

  703. }

  705. if(fu_flag)

  707. {

  709. while(tab[i]<=0x39&&tab[i]>=0x30)

  711. {

  713. n=0;

  715. opr_1=-opr_1*10;

  717. opr_1=-(opr_1+(tab[i++]-0x30));

  719. n='-';

  721. fu_flag=0;

  723. }

  725. }

  727. }

  729. opr_1=0;

  731. opr_temp=0;

  733. xiabiao=0;

  735. xiaoshu=1;

  737. }
復(fù)制代碼
作者: cjjcjj1    時(shí)間: 2017-3-17 14:50
提示: 作者被禁止或刪除 內(nèi)容自動(dòng)屏蔽
作者: zqy181818    時(shí)間: 2017-3-17 15:02
不錯(cuò)哦



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