嵌入式--计算器--实验报告

计算器设计实验报告一、实验设计主要分工04009320 文斌：算法设计，LCD显示。

04** 张希：界面（按钮控件）设计，文件内容读取。

共同调试、完善设计。

二、程序设计实现功能效果（1）支持整数、小数基本加减乘除运算；（2）有优先级的判别计算。

优先级由高到低一次为括号运算、乘除运算、加减运算。

（3）支持键盘输入和触摸屏输入；（4）能读取指定目录下文本内容（内容为计算表达式）并计算得出结果，将内容和结果显示在LCD上。

程序任务开始后，等待键盘或触摸屏的输入。

输入键有0~9数字键、+-*/（）运算符、del退格键、clear清屏键、read读指定目录文本内容并计算键、enter'='键、‘.’小数点键。

每当有字符输入时，触摸屏相应键显示“AAA”，100ms后恢复原相应按键符号，同时LCD屏幕上显示相应字符。

当输入'del'键时，屏幕显示去掉最后一位字符。

当输入'='号后，得出计算结果，结果显示于表达式的下一行。

若是除零错误，则结果显示为“/0ERROR!”。

若有非法字符（触摸点不能识别为设计按键符则视为非法字符），则结果输出为“Syntax Error!!”。

若表达式有运算符连续输入，则忽略前面的运算符，只取最后一位运算符计算，正常显示数字结果。

当输入'clear'键时，情况显示区域。

当输入'read'键时，从指定目录文本文件中读取表达式并计算。

将表达式内容和计算结果显示在LCD上。

三、程序算法实现1、计算算法首先将输入的0~9数字、+-*/（）运算符的内容存储于一个全局变量cal[number]中，表达为中缀表达式。

用void str2repol（）函数，将输入字符串cal[number]转换成逆波兰表达式并存于全局数组char repol[maxs]中。

str2repol（）函数中缀表达式转成逆波兰后缀表达式算法如下：(1)首先构造一个运算符栈stack[maxs]，此运算符在栈内遵循越往栈顶优先级越高的原则。

(2)读入一个中缀表示算术表达式str[maxs]（注：str[i]=cal[i]）。

(3)从左至右扫描该算术表达式，从第一个字符开始判断，如果该字符是数字，则分析到该数字串的结束并将该数字串直接输出到repol[maxs]中。

(4)如果不是数字，该字符则是运算符，此时需比较优先关系。

步骤如下：若为左括号‘（’则压入运算符栈顶；若为其他运算符，则将该字符与运算符栈顶的运算符的优先关系相比较。

若该字符优先关系高于此时运算符栈顶的运算符，则将该运算符入栈。

若该字符优先关系不高于此时运算符栈顶的运算符，则将栈顶的运算符从栈中弹出到repol[maxs]，直到栈顶运算符的优先级低于当前运算符，将该字符入栈。

若为有括号‘（’，则弹出运算符栈顶的运算符至到repol[maxs]，直到遇到左括号‘（’。

弹出并作废此开括号。

(5)重复上述操作。

中缀表达式转成逆波兰后缀表达式后，calculate（）函数计算后缀表达式的值算法如下：用局部数组stack[top]存放运算结果，top初值为0.（1）依次读入后缀表达式repol[maxs]的字符ch，循环判断ch。

（2）若ch为运算符，则stack[top-1]与stack[top]做相应运算。

若运算只需单操作数则stack[top]做相应运算。

运算结果存于stack[top-1]。

然后top- -。

否则ch为数字或小数点‘.'’，为数字则 d=10.0*d+ch-'0'; （d初始值为0，用于存放连续数字字符的数学值）。

遇小数点，d保持原值。

小数点后的数字符与小数点前的数字符一样处理，i记录小数点后的数字符个数。

最后d=d/(10^i)， top++;stack[top]=d。

注：若str2repol（）函数遇非法字符时，LCD输出相应提示，不调用calculate（）。

若calculate （）函数遇除零，则不做运算，LCD输出“/0ERROR!”。

2、按键控件3、LCD输出显示将字符串转为Unicode编码，在指定坐标处用文本模式显示字符串。

实现函数如下：void lcddisplay(char *str,int xx,int yy){PDC pdc;//创建绘图设备上下文结构U16 chx[100];pdc=CreateDC();//创建绘图设备上下文strChar2Unicode(chx, str);TextOut(pdc, xx, yy, chx, TRUE, FONTSIZE_MIDDLE);//文本模式下显示文字 DestoryDC(pdc);//删除绘图设备上下文}注：由于计算器计算结果为double型数据，需将double型数据转为字符串。

实现函数如下:char *doub2str(double d, char *str){ char str2[40]; //double型数据d转为字符串存于str[]double f=-1.0;int j=0,k,i,st,t;if(d==0.0){str[0]='0';str[1]='\0';}//判断d为0else{if(d<0.0){d=-d;st=1;str[0]='-';}//判断为负数else st=0;i=(int)d; //正浮点数的整数部分while(i!=0){ str2[j++]=i%10+'0';i /= 10; }for(k=0;k<j;k++) str[k+st] = str2[j-1-k];if(st==1){j=j+st;st=0;}str[j++]='.';d -= (int)d; //正浮点数的小数部分for(i=0;i<10;i++){ d *= 10;str[j++] = (int)d+'0'; d -= (int)d; }while(str[--j]=='0');//去掉末尾的0str[++j] = '\0';}return str;}4、文本读取四、程序设计流程图五、程序实现主要函数功能说明（1）void Main_Task(void *Id)：主任务函数；功能：创建消息结构；清除屏幕；调用创建按钮控件函数；等待消息；判断消息；调用消息处理函数；（2）void myButtonall()：创建按钮控件函数功能：调用相关函数；SetRect（）；CreateButton（）；DrawButton(b19)；创建按钮；（3）void onKey(unsigned int nkey, int fnkey)：键盘消息响应函数功能：判断按键；调用相关按键响应函数；（4）void myontouch(int xxx,int yyy)：触摸屏消息响应函数功能：识别触摸区域；调用响应触摸键响应函数；（5）void str2repol()：字符表达式转逆波兰表达式函数功能：判别首位字符是否为'-'号，是则将字符串后移一位，首位置0；判别有无非法字符.有则标志位err=1；将输入字符串转成逆波兰表达式；（6）void calculate()：计算函数功能：判别标志位err。

为1则输出“Syntax Error！！”并退出，否则继续-> 判别逆波兰表达式内容；判别小数点->对数字做相应加权判别运算符->做相应运算调用double型转字符串函数；调用字符串结果显示函数。

（7）char *doub2str(double d, char *str)：double型转字符串函数功能:判别d是否为负数。

是则字符串首位置'-'；d取反，继续->判别d小数部分是否为零。

是则整数转字符串，否则再继续—>小数转字符串将double型数字转换成字符串类型；存储字符串并返回。

（8）void lcddisplay(char *str,int xx,int yy)：字符串显示函数功能：将字符串str[]显示在LCD的指定坐标（xx，yy）。

（9）void redraw(char key)：重画按钮函数功能：响应相应函数；重画相应按钮；延时100ms后恢复原按钮。

（10）char zb2key(int x,int y)：坐标转按键函数功能：将触摸点坐标（x，y）转换成相应按键字符。

（11）void dcr(char key)：退格、清屏、读文件函数功能：响应退格键，屏幕显示去除最后一位字符，当前输入后前一次输入置'\0'；响应清屏键，清楚显示区域内容；响应读文件，调用读文件函数。

（12）void readfile()：读文件函数功能：读取指定目录文本文件；显示文本内容；计算内容(表达式)并显示。

（13）void clc()：清屏函数功能：清除显示区域内容。

六、完整【main.c】程序#include "../ucos-ii/includes.h" /* uC/OS interface */ #include "../ucos-ii/add/osaddition.h"#include "../ucos-ii/add/ustring.h"#include "../inc/drivers.h"#include<math.h>#include "../inc/sys/lib.h"#include "../src/gui/gui.h"#include <string.h>#include <stdio.h>char TextFilename[]="/sys/ucos/fj/2.txt"; //自定义声明//文件test: 1+2+3+4+5+6+7+8+9=//文件1: 1+2+3+4+5+6+7+8+9=//文件2: 0.7+5*((1+2)/(2+4))=//文件3:FILE* pfile;#define maxs 200#define react 100#define xz 130#define yz 100char cal[maxs];char read[maxs];int number=1,clear=1;double result;U16 str1[20];char repol[maxs]; /*存储后缀表达式*/void Main_Task(void *Id); //Main_Test_Taskvoid calculate();void str2repol();void readfile();void clc();void send();void lcddisplay(char *str,int xx,int yy);void rezdisplay(double res);void onKey(unsigned int nkey, int fnkey);void myontouch(int xxx,int yyy);void myButtonall();void redraw(char key);void send(PButtonCtrl b);char zb2key(int x,int y);void dcr(char key);char *doub2str(double d, char *str);///******************任务定义***************///OS_STK Main_Stack[STACKSIZE]={0, }; //Main_Test_Task堆栈#define Main_Task_Prio 12void ontouch(unsigned int x, int y);OS_STK test_Stack[STACKSIZE]={0, }; //test_Test_Task堆栈void test_Task(void *Id); //test_Test_Task#define test_Task_Prio 15PButtonCtrl b0;PButtonCtrl b1;PButtonCtrl b2;PButtonCtrl b3;PButtonCtrl b4;PButtonCtrl b5;PButtonCtrl b6;PButtonCtrl b7;PButtonCtrl b8;PButtonCtrl b9;PButtonCtrl b10;PButtonCtrl b11;PButtonCtrl b12;PButtonCtrl b13;PButtonCtrl b14;PButtonCtrl b15;PButtonCtrl b16;PButtonCtrl b17;PButtonCtrl b18;PButtonCtrl b19;//PTextCtrl b20;U32 CtrlID0=200;U32 CtrlID1=201;U32 CtrlID2=202;U32 CtrlID3=303;U32 CtrlID4=204;U32 CtrlID5=205;U32 CtrlID6=306;U32 CtrlID7=207;U32 CtrlID8=208;U32 CtrlID9=209;U32 CtrlID10=210;U32 CtrlID11=211;U32 CtrlID12=212;U32 CtrlID13=213;U32 CtrlID14=214;U32 CtrlID15=215;U32 CtrlID16=216;U32 CtrlID17=217;U32 CtrlID18=218;U32 CtrlID19=219;U32 CtrlID20=220;structRECT rect0;//定义矩形框结构structRECT rect1;structRECT rect2;structRECT rect3;structRECT rect4;structRECT rect5;structRECT rect6;structRECT rect7;structRECT rect8;structRECT rect9;structRECT rect10;structRECT rect11;structRECT rect12;structRECT rect13;structRECT rect14;structRECT rect15;structRECT rect16;structRECT rect17;structRECT rect18;structRECT rect19;structRECT rect20;U16 Caption0[16]; //定义按键功能 U16 Caption1[16];U16 Caption2[16];U16 Caption3[16];U16 Caption4[16];U16 Caption5[16];U16 Caption6[16];U16 Caption7[16];U16 Caption8[16];U16 Caption9[16];U16 Caption10[16];U16 Caption11[16];U16 Caption12[16];U16 Caption13[16];U16 Caption14[16];U16 Caption15[16];U16 Caption16[16];U16 Caption17[16];U16 Caption18[16];U16 Caption19[16];U16 Caption_Actived[16];U32 ButtonStyle=5;U32 ButtonStyle_Actived=3;U32 ButtonFontSize= 2;U32 TextStyle=4;U32 TextFontSize= 2;/******************主函数***************///int main(void){ARMTargetInit();OSInit();OSInitUart();initOSFile();#if USE_MINIGUI==0initOSMessage();initOSList();initOSDC();initOSCtrl();LoadFont();#endifloadsystemParam();LCD_printf("Create task on uCOS-II...\n");OSTaskCreate(Main_Task, (void *)0, (OS_STK *)&Main_Stack[STACKSIZE-1], Main_Task_Prio);OSAddTask_Init(1);LCD_printf("Starting uCOS-II...\n");LCD_printf("Entering graph mode...\n");LCD_ChangeMode(DspGraMode);OSStart();return 0;}//////////////////////////主任务/////////////////////////////////////////////////////////////////////////////void Main_Task(void *Id){PButtonCtrl b;POSMSG pMsg=0;//创建消息结构U32 tou;int x=0; int y=0;ClearScreen();myButtonall();for(;;){pMsg=WaitMessage(0); //等待消息switch(pMsg->Message){case OSM_KEY://键盘消息onKey(pMsg->WParam,pMsg->LParam);break;case OSM_TOUCH_SCREEN:x=pMsg->WParam&0xffff;y=pMsg->WParam>>16;myontouch(x,y); break;}DeleteMessage(pMsg);//删除消息,释放资源}}void onKey(unsigned int nkey, int fnkey){int ret;char *str, skey[16];cal[0]='0';if(clear==1){clear=0;clc();}//清屏lcddisplay(cal+1,xz,yz);if((nkey&KEY_DOWN)==0)return;switch(nkey&0xff){case 'N':str="NumLock";clc();readfile();break;case '\r':str="Enter";cal[number]='=';redraw(cal[number]);printf("表达式：%s\n",cal+1);lcddisplay(cal+1,xz,yz);str1[number]=cal[number];str2repol();calculate();for(ret=1;ret<=number;ret++){cal[ret]='\0';if(ret==number){number=1;ret=2;}}clear=2;break;default:skey[0]=nkey;skey[1]=0;str=skey;cal[number]=nkey;redraw(cal[number]);lcddisplay(cal+1,xz,yz);str1[number]=cal[number];number+=1;if(clear==2) clear=1;}printf("%s\r",cal+1);}void myontouch(int xxx,int yyy){int ret;if(clear==1){clear=0;clc();}//清屏cal[number]=zb2key(xxx,yyy); redraw(cal[number]);switch(cal[number]){case 'd':printf("\ndelre\n");dcr(cal[number]);break;case 'c':dcr(cal[number]);break;case 'r':dcr(cal[number]);break;case '=':printf("表达式：%s\n",cal+1);lcddisplay(cal+1,xz,yz);str1[number]=cal[number];str2repol();calculate();clear=2;for(ret=1;ret<=number;ret++){cal[ret]='\0';if(ret==number){number=1;ret=2;}}break;default:if(clear==2) clear=1;str1[number]=cal[number];lcddisplay(cal+1,xz,yz);number++;break;}printf("%s\r",cal+1);}void str2repol(){ /*将算术表达式转化为后缀表达式*/char str[maxs],strtem[maxs]; /*存储原算术表达式*/char stack[maxs]; /*作为栈使用*/char ch,*er;int i,t,top=0,j,sum,st;i=0; /*获取用户输入的表达式*/do{i++;str[i]=cal[i];}while(cal[i]!='=' && i!=maxs);sum=i; ////////////////////sum中记录了str表达式中的字符的个数t=1;i=1;if(str[1]=='-'){for(st=1;st<sum;st++)strtem[st]=str[st+1];str[1]='0';str[2]='-';for(st=3;st<=sum+1;st++)str[st]=strtem[st-2];sum++;}ch=str[i];i++;//ch为表达式中第一个字符while(ch!='='){switch(ch){case '(': /*判定为左括号*/top++;stack[top]=ch;break;case ')': /*判定为右括号*/while(stack[top]!='('){repol[t]=stack[top];top--;t++;}top--;break;case '+': /*判定为加减号*/ case '-':while(top!=0&&stack[top]!='('){repol[t]=stack[top];top--;t++;}top++;stack[top]=ch;break;case '*': /*判定为乘除号*/case '/':while(stack[top]=='*'||stack[top]=='/'){repol[t]=stack[top];top--;t++;}top++;stack[top]=ch;break;case ' ':break;default:while(ch>='0'&&ch<='9'||ch=='.'){ /*判定为数字*/ repol[t]=ch;t++;ch=str[i];i++;}i--;repol[t]='=';t++;/*if(ch<'0'&&ch>'9'&&ch!='.'){er="error!";lcddisplay(er,xz,yz+20);ch='=';}*/}ch=str[i];i++;}while(top!=0){repol[t]=stack[top];t++;top--;}repol[t]='=';}void calculate(){ /*计算后缀表达式的值*/double stack[maxs],d0,d1,dd; /*作为栈使用*/unsigned int re;char ch,*restr,*rez;int t=1,top=0,counter,i; /*t为ex下标，top为stack下标*/ static int zh=1;ch=repol[t];t++;while(ch!='='){switch(ch){case '+':stack[top-1]=stack[top-1]+stack[top];top--;break;case '-':stack[top-1]=stack[top-1]-stack[top];top--;break;case '*':stack[top-1]=stack[top-1]*stack[top];top--;break;case '/':if(stack[top]!=0)stack[top-1]=stack[top-1]/stack[top];else{printf("\n\t除零错误!\n");lcddisplay("ERROR!",xz,yz);// exit(0); /*异常退出*/}top--;break;default: /*将数字字符转化为对应的数值*/d1=0;d0=0;counter=0;while(ch>='0'&&ch<='9'||ch=='.'){if(ch!='.'&&zh==1){d1=10.0*d1+ch-'0'; }if(ch=='.')zh=0;if(ch!='.'&&zh==0){d0=10.0*d0+ch-'0';counter++;}ch=repol[t];t++;}//计算zh=1;for(i=0;i<counter;i++){d0=d0/10.0;}dd=d1+d0;top++;stack[top]=dd;}ch=repol[t];t++;} //转换运算result=stack[top];printf("\n计算结果:%f\n\n",stack[top]);rez=doub2str(result,restr);lcddisplay(rez,xz,yz+20);}void lcddisplay(char *str,int xx,int yy){PDC pdc;//创建绘图设备上下文结构U16 chx[100];pdc=CreateDC();//创建绘图设备上下文fstrChar2Unicode(chx, str);TextOut(pdc, xx, yy, chx, TRUE, FONTSIZE_MIDDLE);//文本模式下显示文字DestoryDC(pdc);//删除绘图设备上下文}void myButtonall(){PDC pdc;//定义绘图设备上下文结构pdc=CreateDC();//创建绘图设备上下文//定义按键功能Int2Unicode(1,Caption0);Int2Unicode(2,Caption1);Int2Unicode(3,Caption2);strChar2Unicode(Caption3,"+");Int2Unicode(4,Caption4);Int2Unicode(5,Caption5);Int2Unicode(6,Caption6);strChar2Unicode(Caption7,"-");Int2Unicode(7,Caption8);Int2Unicode(8,Caption9);Int2Unicode(9,Caption10);strChar2Unicode(Caption11,"*");strChar2Unicode(Caption12,"(");Int2Unicode(0,Caption13);strChar2Unicode(Caption14,")");strChar2Unicode(Caption15,"/");strChar2Unicode(Caption16,"del");strChar2Unicode(Caption17,"read");strChar2Unicode(Caption18,"clear");strChar2Unicode(Caption19,"enter" );strChar2Unicode(Caption_Actived,"AAA" );SetRect(&rect0, 165,165,235,235); //第一行SetRect(&rect1, 245,165,315,235);SetRect(&rect2, 325,165,395,235);SetRect(&rect3, 405,165,475,235);SetRect(&rect4, 165,245,235,315); //第二行SetRect(&rect5, 245,245,315,315);SetRect(&rect6, 325,245,395,315);SetRect(&rect7, 405,245,475,315);SetRect(&rect8, 165,325,235,395);//第三行SetRect(&rect9, 245,325,315,395);SetRect(&rect10, 325,325,395,395);SetRect(&rect11, 405,325,475,395);SetRect(&rect12, 165,405,235,475);//第四行SetRect(&rect13, 245,405,315,475);SetRect(&rect14, 325,405,395,475);SetRect(&rect15, 405,405,475,475);SetRect(&rect16, 5,165,155,315);//左1SetRect(&rect17, 5,325,155,475);//左2SetRect(&rect18, 485,165,635,315);//右1SetRect(&rect19, 485,325,635,475);//右2SetRect(&rect20, 165,5,475,155);//顶栏//设置间距10后坐标：b0=CreateButton(CtrlID0, &rect0, ButtonFontSize, ButtonStyle,Caption0, NULL);b1=CreateButton(CtrlID1, &rect1, ButtonFontSize, ButtonStyle, Caption1, NULL);b2=CreateButton(CtrlID2, &rect2, ButtonFontSize, ButtonStyle_Actived, Caption2, NULL);b3=CreateButton(CtrlID3, &rect3, ButtonFontSize, ButtonStyle, Caption3, NULL);b4=CreateButton(CtrlID4, &rect4, ButtonFontSize, ButtonStyle, Caption4, NULL);b5=CreateButton(CtrlID5, &rect5, ButtonFontSize, ButtonStyle, Caption5, NULL);b6=CreateButton(CtrlID6, &rect6, ButtonFontSize, ButtonStyle, Caption6, NULL);b7=CreateButton(CtrlID7, &rect7, ButtonFontSize, ButtonStyle, Caption7, NULL);b8=CreateButton(CtrlID8, &rect8, ButtonFontSize, ButtonStyle, Caption8, NULL);b9=CreateButton(CtrlID9, &rect9, ButtonFontSize, ButtonStyle, Caption9, NULL);b10=CreateButton(CtrlID10, &rect10, ButtonFontSize, ButtonStyle, Caption10, NULL);b11=CreateButton(CtrlID11, &rect11, ButtonFontSize, ButtonStyle, Caption11, NULL);b12=CreateButton(CtrlID12, &rect12, ButtonFontSize, ButtonStyle, Caption12, NULL);b13=CreateButton(CtrlID13, &rect13, ButtonFontSize, ButtonStyle, Caption13, NULL);b14=CreateButton(CtrlID14, &rect14, ButtonFontSize, ButtonStyle, Caption14, NULL);b15=CreateButton(CtrlID15, &rect15, ButtonFontSize, ButtonStyle, Caption15, NULL);b16=CreateButton(CtrlID16, &rect16, ButtonFontSize, ButtonStyle, Caption16, NULL);b17=CreateButton(CtrlID17, &rect17, ButtonFontSize, ButtonStyle, Caption17, NULL);b18=CreateButton(CtrlID18, &rect18, ButtonFontSize, ButtonStyle, Caption18, NULL);b19=CreateButton(CtrlID19, &rect19, ButtonFontSize, ButtonStyle, Caption19, NULL);//b20=CreateTextCtrl(CtrlID20, &rect20, TextFontSize, TextStyle, NULL, NULL);DrawButton(b0);DrawButton(b1);DrawButton(b2);DrawButton(b3);DrawButton(b4);DrawButton(b5);DrawButton(b6);DrawButton(b7);DrawButton(b8);DrawButton(b9);DrawButton(b10);DrawButton(b11);DrawButton(b12);DrawButton(b13);DrawButton(b14);DrawButton(b15);DrawButton(b16);DrawButton(b17);DrawButton(b18);DrawButton(b19);//DrawTextCtrl(b20);DestoryDC(pdc);//删除绘图设备上下文}void send(PButtonCtrl b){POSMSG pmsg;pmsg=OSCreateMessage(NULL, OSM_KEY,2147483697,0);SendMessage(pmsg);}void redraw(char key){PDC pdc;//定义绘图设备上下文结构pdc=CreateDC();//创建绘图设备上下文switch(key){case'1':DestoryButton(b0);b0=CreateButton(CtrlID0, &rect0, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b0);DestoryButton(b0);b0=CreateButton(CtrlID0, &rect0, ButtonFontSize, ButtonStyle, Caption0, NULL);OSTimeDly(react);DrawButton(b0);break;case'2':DestoryButton(b1);b1=CreateButton(CtrlID1, &rect1, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b1);DestoryButton(b1);b1=CreateButton(CtrlID1, &rect1, ButtonFontSize, ButtonStyle, Caption1, NULL);OSTimeDly(react);DrawButton(b1);break;case'3':DestoryButton(b2);b2=CreateButton(CtrlID2, &rect2, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b2);DestoryButton(b2);b2=CreateButton(CtrlID2, &rect2, ButtonFontSize, ButtonStyle, Caption2, NULL);OSTimeDly(react);DrawButton(b2);break;case'+':DestoryButton(b3);b3=CreateButton(CtrlID3, &rect3, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b3);DestoryButton(b3);b3=CreateButton(CtrlID3, &rect3, ButtonFontSize, ButtonStyle, Caption3, NULL);OSTimeDly(react);DrawButton(b3);break;case'4':DestoryButton(b4);b4=CreateButton(CtrlID4, &rect4, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b4);DestoryButton(b4);b4=CreateButton(CtrlID4, &rect4, ButtonFontSize, ButtonStyle, Caption4, NULL);OSTimeDly(react);DrawButton(b4);break;case'5':DestoryButton(b5);b5=CreateButton(CtrlID5, &rect5, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b5);DestoryButton(b5);b5=CreateButton(CtrlID5, &rect5, ButtonFontSize, ButtonStyle, Caption5, NULL);OSTimeDly(react);DrawButton(b5);break;case'6':DestoryButton(b6);b6=CreateButton(CtrlID6, &rect6, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b6);DestoryButton(b6);b6=CreateButton(CtrlID6, &rect6, ButtonFontSize, ButtonStyle, Caption6, NULL);OSTimeDly(react);DrawButton(b6);break;case'-':DestoryButton(b7);b7=CreateButton(CtrlID7, &rect7, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b7);DestoryButton(b7);b7=CreateButton(CtrlID7, &rect7, ButtonFontSize, ButtonStyle, Caption7, NULL);OSTimeDly(react);DrawButton(b7);break;case'7':DestoryButton(b8);b8=CreateButton(CtrlID8, &rect8, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b8);DestoryButton(b8);b8=CreateButton(CtrlID8, &rect8, ButtonFontSize, ButtonStyle, Caption8, NULL);OSTimeDly(react);DrawButton(b8);break;case'8':DestoryButton(b9);b9=CreateButton(CtrlID9, &rect9, ButtonFontSize, ButtonStyle,Caption_Actived, NULL);DrawButton(b9);DestoryButton(b9);b9=CreateButton(CtrlID9, &rect9, ButtonFontSize, ButtonStyle, Caption9, NULL);OSTimeDly(react);DrawButton(b9);break;case'9':DestoryButton(b10);b10=CreateButton(CtrlID10, &rect10, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b10);DestoryButton(b10);b10=CreateButton(CtrlID10, &rect10, ButtonFontSize, ButtonStyle, Caption10, NULL);OSTimeDly(react);DrawButton(b10);break;case'*':DestoryButton(b11);b11=CreateButton(CtrlID11, &rect11, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b11);DestoryButton(b11);b11=CreateButton(CtrlID11, &rect11, ButtonFontSize, ButtonStyle, Caption11, NULL);OSTimeDly(react);DrawButton(b11);break;case'(':DestoryButton(b12);b12=CreateButton(CtrlID12, &rect12, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b12);DestoryButton(b12);b12=CreateButton(CtrlID12, &rect12, ButtonFontSize, ButtonStyle, Caption12, NULL);OSTimeDly(react);DrawButton(b12);break;case'0':DestoryButton(b13);b13=CreateButton(CtrlID13, &rect13, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b13);DestoryButton(b13);b13=CreateButton(CtrlID13, &rect13, ButtonFontSize, ButtonStyle,Caption13, NULL);OSTimeDly(react);DrawButton(b13);break;case')':DestoryButton(b14);b14=CreateButton(CtrlID14, &rect14, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b14);DestoryButton(b14);b14=CreateButton(CtrlID14, &rect14, ButtonFontSize, ButtonStyle, Caption14, NULL);OSTimeDly(react);DrawButton(b14);break;case'/':DestoryButton(b15);b15=CreateButton(CtrlID15, &rect15, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b15);DestoryButton(b15);b15=CreateButton(CtrlID15, &rect15, ButtonFontSize, ButtonStyle, Caption15, NULL);OSTimeDly(react);DrawButton(b15);break;case'd':DestoryButton(b16);b16=CreateButton(CtrlID16, &rect16, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b16);DestoryButton(b16);b16=CreateButton(CtrlID16, &rect16, ButtonFontSize, ButtonStyle, Caption16, NULL);OSTimeDly(react);DrawButton(b16);break;case'r':DestoryButton(b17);b17=CreateButton(CtrlID17, &rect17, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b17);DestoryButton(b17);b17=CreateButton(CtrlID17, &rect17, ButtonFontSize, ButtonStyle, Caption17, NULL);OSTimeDly(react);DrawButton(b17);break;case'c':DestoryButton(b18);b18=CreateButton(CtrlID18, &rect18, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b18);DestoryButton(b18);b18=CreateButton(CtrlID18, &rect18, ButtonFontSize, ButtonStyle, Caption18, NULL);OSTimeDly(react);DrawButton(b18);break;case'=':DestoryButton(b19);b19=CreateButton(CtrlID19, &rect19, ButtonFontSize, ButtonStyle, Caption_Actived, NULL);DrawButton(b19);DestoryButton(b19);b19=CreateButton(CtrlID19, &rect19, ButtonFontSize, ButtonStyle, Caption19, NULL);OSTimeDly(react);DrawButton(b19);break;default:break;}DestoryDC(pdc);//删除绘图设备上下文}char zb2key(int x,int y){char key;if((160<x)&&(x<=240)&&(165<=y)&&(y<=240)) key='1';else if((240<x)&&(x<=320)&&(165<=y)&&(y<=240)) key='2';else if((320<x)&&(x<=400)&&(165<=y)&&(y<=240)) key='3';else if((400<x)&&(x<=475)&&(165<=y)&&(y<=240)) key='+';else if((160<x)&&(x<=240)&&(240<y)&&(y<=320)) key='4';else if((240<x)&&(x<=320)&&(240<y)&&(y<=320)) key='5';else if((320<x)&&(x<=400)&&(240<y)&&(y<=320)) key='6';else if((400<x)&&(x<=475)&&(240<y)&&(y<=320)) key='-';else if((160<x)&&(x<=240)&&(320<y)&&(y<=400)) key='7';else if((240<x)&&(x<=320)&&(320<y)&&(y<=400)) key='8';else if((320<x)&&(x<=400)&&(320<y)&&(y<=400)) key='9';else if((400<x)&&(x<=475)&&(320<y)&&(y<=400)) key='*';else if((160<x)&&(x<=240)&&(400<y)&&(y<=480)) key='(';else if((240<x)&&(x<=320)&&(400<y)&&(y<=480)) key='0';else if((320<x)&&(x<=400)&&(400<y)&&(y<=480)) key=')';else if((400<x)&&(x<=475)&&(400<y)&&(y<=480)) key='/';else if((5<=x)&&(x<=160)&&(165<y)&&(y<=320)) key='d';else if((5<=x)&&(x<=160)&&(320<y)&&(y<=480)) key='r';else if((485<=x)&&(x<=635)&&(165<y)&&(y<=320))key='c';else if((485<=x)&&(x<=635)&&(320<y)&&(y<=480))key='=';else key=' ';return key;}void dcr(char key){char non[100],tem1[maxs];int n,del;for(n=0;n<100;n++){non[n]=' ';}switch(key){case 'd':clc();cal[number-1] = '\0';cal[number] = '\0';cal[number+1] = '\0';cal[number+2] = '\0';number=number-1;lcddisplay(cal+1,xz,yz);break;case 'c':clc();break;case 'r':readfile();break;default:break;}}void readfile(){clear=2;pfile=fopen(TextFilename,"r");//打开文件if(pfile==NULL){//文件打开失败LCD_printf("Can't Open file!\n");for(;;) OSTimeDly(1000);}while(readline(read, sizeof(read), pfile)){//以行的方式读文件 int ii;number=sizeof(read);for(ii=0; ii<=number; ii++){cal[ii+1]=read[ii];}printf("read=%s\n",read);printf("cal=%s\n",cal+1);lcddisplay(cal+1,xz,yz);str1[number]=cal[number];trans();compvalue();//clear=1;int ret;for(ret=1;ret<=number;ret++){cal[ret]='\0';if(ret==number){number=1;ret=2;}}}fclose(pfile);//关闭文件//for(;;) OSTimeDly(1000);}void clc(){char non[100];int n,ret;for(n=0;n<100;n++){non[n]=' ';}lcddisplay(non,xz,yz);lcddisplay(non,xz,yz+20);}char *doub2str(double d, char *str){char str2[40];double f=-1.0;int j=0,k,i,st,tem,temz,tem2;if(d==0.0){str[0]='0';str[1]='\0';}else{if(d<0.0){printf("d=%f\t\n",d);tem2=d*f;d=tem2;st=1;str[0]='-';} else st=0;temz=(int)d;tem=d;i=(int)d; //浮点数的整数部分while(i!=0){str2[j++]=i%10+'0';i /= 10;}for(k=0;k<j;k++) str[k+st] = str2[j-1-k];if(st==1){j=j+st;st=0;}str[j++]='.';d -= (int)d;for(i=0;i<10;i++){d *= 10;str[j++] = (int)d+'0';d -= (int)d;}while(str[--j]=='0');str[++j] = '\0';}return str;}int readline(char* str, int n, FILE *pfile){int i;for(i=0; i<=n; i++){if(fread(str, 1, 1, pfile)!=1)return 0;if(*str=='\n'){str++;*str=0;return i;。