STM32F4应用笔记（六）UCGUI+uC/OS-II+支持触摸屏——触屏计算器
最终实现的效果是一个触屏计算器，在上一篇博客的工程基础下改变主程序即可，用的是4.3寸屏幕，如果不是4.3寸屏幕，就需要自己该改参数，Calculator_Init函数中的界面参数也要重新设置，最终实现的效果如下：
主程序
#include "sys.h"
#include "delay.h"
#include "usart.h"
#include "led.h"
#include "beep.h"
#include "ili93xx.h"
#include "touch.h"
#include "gui.h"
#include "24cxx.h"
#include "ucos_ii.h"
#include "string.h" //需要用到字符串处理函数
#include "stdio.h" //sprintf转换要用到
#include "FRAMEWIN.h"
#include "BUTTON.h"
#include "EDIT.h"
#include "LISTBOX.h"
int t;
//计算器的模块构建部分！定义为全局变量，省去了传递参数的麻烦，当然，这不够规范
FRAMEWIN_Handle hFrame;
//FRAMEWIN_Handle在#include "FRAMEWIN.h" 当中
BUTTON_Handle hButton1;
BUTTON_Handle hButton2;
BUTTON_Handle hButton3;
BUTTON_Handle hButton4;
BUTTON_Handle hButton5;
BUTTON_Handle hButton6;
BUTTON_Handle hButton7;
BUTTON_Handle hButton8;
BUTTON_Handle hButton9;
BUTTON_Handle hButton0;
BUTTON_Handle hButton_jia;
BUTTON_Handle hButton_jian;
BUTTON_Handle hButton_chen;
BUTTON_Handle hButton_chu;
BUTTON_Handle hButton_equal;
BUTTON_Handle hButton_backspace;
BUTTON_Handle hButton_dort;
BUTTON_Handle hButton_ac;
EDIT_Handle hEdit;
LISTBOX_Handle hListBox;
GUI_PID_STATE Button_State; //输入设备状态
char num1[10]={""};
char num2[10]={""};
char temp1[50]={""}; //临时数组1——放第一个运算数
char temp2[50]={""}; //临时数组1——放第二个运算数
double a=0.0; //妈的，必须用double，一开始用的float有时好用有时不好用
//还以为自己程序写错了
double b=0.0;
static int middle_flag=0; //中间运算符标志
double f=0.0; //存放最终结果
int len;//获取字符串长度
int Type=0; //默认是=0，表示没有运算符按下
//=1:加;=2:减;=3:乘;=4:除
/UCOSII任务设置///
//START 任务
//设置任务优先级
#define START_TASK_PRIO 10 //开始任务的优先级设置为最低
//设置任务堆栈大小
#define START_STK_SIZE 64
//任务堆栈
OS_STK START_TASK_STK[START_STK_SIZE];
//任务函数
void start_task(void *pdata);
//触摸屏任务
//设置任务优先级
#define TOUCH_TASK_PRIO 7
//设置任务堆栈大小
#define TOUCH_STK_SIZE 256
//任务堆栈
OS_STK TOUCH_TASK_STK[TOUCH_STK_SIZE];
//任务函数
void touch_task(void *pdata);
/***************************************************************************
* 计算器框架的初始化部分 *
***************************************************************************/
void Calculator_Init(void)
{
hFrame = FRAMEWIN_Create("Calculator", NULL, WM_CF_SHOW, 0,0,480,800);
//WM_CF_SHOW/* Show window after creation */
FRAMEWIN_SetActive(hFrame, 1);
FRAMEWIN_SetMoveable(hFrame, 1); //设置为可移动的
FRAMEWIN_SetFont(hFrame, &GUI_Font16B_ASCII);
FRAMEWIN_SetTextColor(hFrame, GUI_RED);
FRAMEWIN_SetBarColor(hFrame, 0, GUI_GREEN);
FRAMEWIN_SetTextAlign(hFrame, GUI_TA_HCENTER);
FRAMEWIN_AddMaxButton(hFrame, FRAMEWIN_BUTTON_RIGHT, 0);
FRAMEWIN_AddMinButton(hFrame, FRAMEWIN_BUTTON_RIGHT, 0);
hButton1 = BUTTON_CreateAsChild(10,120,70, 70,hFrame,101,WM_CF_SHOW);
//注意这里的ID，每一个空间都有自己的一个ID
hButton2 = BUTTON_CreateAsChild(10,200,70, 70,hFrame,102,WM_CF_SHOW);
hButton3 = BUTTON_CreateAsChild(10,280,70, 70,hFrame,103,WM_CF_SHOW);
hButton4 = BUTTON_CreateAsChild(90,120,70, 70,hFrame,104,WM_CF_SHOW);
hButton5 = BUTTON_CreateAsChild(90,200,70, 70,hFrame,105,WM_CF_SHOW);
hButton6 = BUTTON_CreateAsChild(90,280,70, 70,hFrame,106,WM_CF_SHOW);
hButton7 = BUTTON_CreateAsChild(170,120,70, 70,hFrame,107,WM_CF_SHOW);
hButton8 = BUTTON_CreateAsChild(170,200,70, 70,hFrame,108,WM_CF_SHOW);
hButton9 = BUTTON_CreateAsChild(170,280,70, 70,hFrame,109,WM_CF_SHOW);
hButton0 = BUTTON_CreateAsChild(250,120,70, 70,hFrame,100,WM_CF_SHOW);
hButton_jia = BUTTON_CreateAsChild(250,200,70, 70,hFrame,110,WM_CF_SHOW);
hButton_jian = BUTTON_CreateAsChild(250,280,70, 70,hFrame,111,WM_CF_SHOW);
hButton_chen = BUTTON_CreateAsChild(330,120,70, 70,hFrame,112,WM_CF_SHOW);
hButton_chu = BUTTON_CreateAsChild(330,200,70, 70,hFrame,113,WM_CF_SHOW);
hButton_equal = BUTTON_CreateAsChild(330,280,70, 70,hFrame,114,WM_CF_SHOW);
hButton_dort = BUTTON_CreateAsChild(410,200,70, 70,hFrame,115,WM_CF_SHOW);
hButton_backspace = BUTTON_CreateAsChild(410,120,70, 70,hFrame,116,WM_CF_SHOW);
hButton_ac = BUTTON_CreateAsChild(410,280,70, 70,hFrame,117,WM_CF_SHOW);
BUTTON_SetText(hButton0, "0");
BUTTON_SetFont(hButton0, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton1, "1");
BUTTON_SetFont(hButton1, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton2, "2");
BUTTON_SetFont(hButton2, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton3, "3");
BUTTON_SetFont(hButton3, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton4, "4");
BUTTON_SetFont(hButton4, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton5, "5");
BUTTON_SetFont(hButton5, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton6, "6");
BUTTON_SetFont(hButton6, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton7, "7");
BUTTON_SetFont(hButton7, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton8, "8");
BUTTON_SetFont(hButton8, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton9, "9");
BUTTON_SetFont(hButton9, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton_jia, "+");
BUTTON_SetFont(hButton_jia, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton_jian, "-");
BUTTON_SetFont(hButton_jian, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton_chen, "x");
BUTTON_SetFont(hButton_chen, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton_chu, "/");
BUTTON_SetFont(hButton_chu, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton_equal, "=");
BUTTON_SetFont(hButton_equal, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton_ac, "AC");
BUTTON_SetFont(hButton_ac, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton_dort, ".");
BUTTON_SetFont(hButton_dort, &GUI_Font32B_ASCII);
BUTTON_SetText(hButton_backspace, "Del");
BUTTON_SetFont(hButton_backspace, &GUI_Font32B_ASCII);
hEdit=EDIT_CreateAsChild(10, 30, 460, 80,hFrame, 118, WM_CF_SHOW, 20);
EDIT_SetDefaultTextAlign(GUI_TA_RIGHT);
EDIT_SetFont(hEdit, &GUI_Font24B_ASCII);
EDIT_SetValue(hEdit,'0');
}
int main(void)
{
Stm32_Clock_Init(336,8,2,7);//设置时钟,168Mhz
delay_init(168); //初始化延时函数
LED_Init(); //初始化LED时钟
BEEP_Init(); //蜂鸣器初始化
uart_init(84,115200); //初始化串口波特率为115200——必须要有这句话
LCD_hard_Init();
TP_Init(); //触摸屏初始化
GUI_Init();
Calculator_Init();
OSInit(); //初始化UCOSII
OSTaskCreate(start_task,(void *)0,(OS_STK *)&START_TASK_STK[START_STK_SIZE-1],START_TASK_PRIO );//创建起始任务
OSStart(); //启动UCOSII
}
//开始任务
void start_task(void *pdata)
{
OS_CPU_SR cpu_sr=0;
pdata = pdata;
OS_ENTER_CRITICAL(); //进入临界区(无法被中断打断)
OSTaskCreate(touch_task,(void *)0,(OS_STK*)&TOUCH_TASK_STK[TOUCH_STK_SIZE-1],TOUCH_TASK_PRIO);
OSTaskSuspend(START_TASK_PRIO); //挂起起始任务.
OS_EXIT_CRITICAL(); //退出临界区(可以被中断打断)
}
//TOUCH任务
void touch_task(void *pdata)
{
int i;
while(1)
{
t++;
if(t==100)
{
LED0=~LED0;
t=0;
}
GUI_TOUCH_Exec();
GUI_TOUCH_GetState(&Button_State); //得到输入设备状态 //
GUI_TOUCH_StoreStateEx(&Button_State);//存储输入设备状态 //
GUI_Exec(); //刷新显示——得有它，不然就是黑屏
delay_ms(5);//——这个延时越长，触屏反应越不灵敏，不加也可以。
if(middle_flag==0) //说明中间运算符是第一次按下
{
switch(GUI_GetKey())
{
case 100:
strcat(num1,"0"); //num1数组加上字符0
//如果按完一个数直接按等号，必须显示数本身，这时候这2句代码就有用了
strcpy(temp1,num1); //没问题试过了
a=atof(temp1); //把字符串temp1转换成float——没问题
EDIT_SetText(hEdit,num1);
BEEP=1; //每次按键都会有蜂鸣器响声，表示按键动作的进行
delay_ms(10);
BEEP=0;
break;
case 101:
strcat(num1,"1");
//如果按完一个数直接按等号，必须显示数本身，这时候这2句代码就有用了
strcpy(temp1,num1);
a=atof(temp1); //把字符串temp1转换成浮点数a
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 102:
strcat(num1,"2");
//如果按完一个数直接按等号，必须显示数本身，这时候这2句代码就有用了
strcpy(temp1,num1);
a=atof(temp1); //把字符串temp1转换成浮点数a
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 103:
strcat(num1,"3");
//如果按完一个数直接按等号，必须显示数本身，这时候这2句代码就有用了
strcpy(temp1,num1);
a=atof(temp1); //把字符串temp1转换成浮点数a
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 104:
strcat(num1,"4");
//如果按完一个数直接按等号，必须显示数本身，这时候这2句代码就有用了
strcpy(temp1,num1);
a=atof(temp1); //把字符串temp1转换成浮点数a
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 105:
strcat(num1,"5");
//如果按完一个数直接按等号，必须显示数本身，这时候这2句代码就有用了
strcpy(temp1,num1);
a=atof(temp1); //把字符串temp1转换成浮点数a
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 106:
strcat(num1,"6");
//如果按完一个数直接按等号，必须显示数本身，这时候这2句代码就有用了
strcpy(temp1,num1);
a=atof(temp1); //把字符串temp1转换成浮点数a
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 107:
strcat(num1,"7");
//如果按完一个数直接按等号，必须显示数本身，这时候这2句代码就有用了
strcpy(temp1,num1);
a=atof(temp1); //把字符串temp1转换成浮点数a
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 108:
strcat(num1,"8");
//如果按完一个数直接按等号，必须显示数本身，这时候这2句代码就有用了
strcpy(temp1,num1);
a=atof(temp1); //把字符串temp1转换成浮点数a
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 109:
strcat(num1,"9");
//如果按完一个数直接按等号，必须显示数本身，这时候这2句代码就有用了
strcpy(temp1,num1);
a=atof(temp1); //把字符串temp1转换成浮点数a
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 110:
Type=1; //+号按下
strcpy(temp1,num1);//将num1复制到temp1中——此时的temp1不包含运算符
strcat(num1,"+");
a=atof(temp1); //把字符串temp1转换成浮点数a
middle_flag=1; //表示有运算符按下（除了=号）
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 111:
Type=2; //-号按下
strcpy(temp1,num1);
strcat(num1,"-");
a=atof(temp1); //把字符串转换成浮点数a
middle_flag=1; //表示有运算符按下（除了=号）
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 112:
Type=3; //*号按下
strcpy(temp1,num1);
strcat(num1,"*");
a=atof(temp1); //把字符串转换成浮点数a
middle_flag=1; //表示有运算符按下（除了=号）
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 113:
Type=4; // /号按下
strcpy(temp1,num1);
strcat(num1,"/");
a=atof(temp1); //把字符串转换成浮点数a
middle_flag=1; //表示有运算符按下（除了=号）
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 114: //在没有中间运算符的情况下，等号按下，执行这段程序
//相当于输完一个数直接按=;
middle_flag=0; //中间运算标志标志清零
f=a+b;//存放最终运算结果
a=f; //把结果保存到a
sprintf(num1,"%10.2f",f ); //转换成字符串
EDIT_SetText(hEdit,num1); //显示出来
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 115: //小数点按下
strcat(num1,".");
EDIT_SetText(hEdit,num1); //显示出来
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 116: //删除键按下
len=strlen(num1);
num1[len-1]='\0'; //删掉最后一个字符
EDIT_SetText(hEdit,num1); //显示出来
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 117: //清零键按下——所有都清零
len=strlen(num1);
for(i=0;i'\0';
}
len=strlen(num2);
for(i=0;i'\0';
}
len=strlen(temp1);
for(i=0;i'\0';
}
len=strlen(temp2);
for(i=0;i'\0';
}
a=b=0;
middle_flag=0; //中间运算符标志
f=0.0; //存放最终结果
EDIT_SetText(hEdit,num1); //显示出来
BEEP=1;
delay_ms(10);
BEEP=0;
break;
default:
break;
}
}
/**************************************************************/
if(middle_flag==1) //中间运算符已经按下过一次，那么第二次按下的运算符不管是不是等号，都起到等号的作用
{
switch(GUI_GetKey())
{
case 100:
strcat(num1,"0"); //num1数组加上字符0
strcat(num2,"0"); //num2数组加上字符0
strcpy(temp2,num2);
b=atof(temp2);
EDIT_SetText(hEdit,num1); //最后显示还是用num1
BEEP=1; //每次按键都会有蜂鸣器响声，表示按键动作的进行
delay_ms(10);
BEEP=0;
break;
case 101:
strcat(num1,"1");
strcat(num2,"1");
strcpy(temp2,num2);
b=atof(temp2);
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 102:
strcat(num1,"2");
strcat(num2,"2");
strcpy(temp2,num2);
b=atof(temp2);
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 103:
strcat(num1,"3");
strcat(num2,"3");
strcpy(temp2,num2);
b=atof(temp2);
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 104:
strcat(num1,"4");
strcat(num2,"4");
strcpy(temp2,num2);
b=atof(temp2);
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 105:
strcat(num1,"5");
strcat(num2,"5");
strcpy(temp2,num2);
b=atof(temp2);
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 106:
strcat(num1,"6");
strcat(num2,"6");
strcpy(temp2,num2);
b=atof(temp2);
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 107:
strcat(num1,"7");
strcat(num2,"7");
strcpy(temp2,num2);
b=atof(temp2);
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 108:
strcat(num1,"8");
strcat(num2,"8");
strcpy(temp2,num2);
b=atof(temp2);
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 109:
strcat(num1,"9");
strcat(num2,"9");
strcpy(temp2,num2);
b=atof(temp2);
EDIT_SetText(hEdit,num1);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 114:
middle_flag=0; //中间运算标志标志清零
switch(Type)
{
case 1: //加法运算
f=a+b;
break;
case 2:
f=a-b;
break;
case 3:
f=a*b;
break;
case 4:
f=a/b;
break;
default:
break;
}
middle_flag=0; //中间运算标志标志清零
sprintf(num1,"%10.2f",f ); //转换成字符串
EDIT_SetText(hEdit,num1); //显示出来
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 115: //小数点按下
strcat(num1,".");
EDIT_SetText(hEdit,num1); //显示出来
strcat(num2,".");
strcpy(temp2,num2);
b=atof(temp2);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 116: //删除键按下
len=strlen(num1);
num1[len-1]='\0'; //删掉最后一个字符
EDIT_SetText(hEdit,num1); //显示出来
len=strlen(num2);
num2[len-1]='\0'; //删掉最后一个字符
//temp也要删，不然会出错
strcpy(temp2,num2);
b=atof(temp2);
BEEP=1;
delay_ms(10);
BEEP=0;
break;
case 117: //清零键按下——所有都清零
len=strlen(num1);
for(i=0;i'\0';
}
len=strlen(num2);
for(i=0;i'\0';
}
len=strlen(temp1);
for(i=0;i'\0';
}
len=strlen(temp2);
for(i=0;i'\0';
}
a=b=0;
middle_flag=0; //中间运算符标志
f=0.0; //存放最终结果
EDIT_SetText(hEdit,num1); //显示出来
BEEP=1;
delay_ms(10);
BEEP=0;
break;
default:
break;
}
}
}
}
程序的不足
1、自己规定输出数据小数只能是2位，而且无意义的0无法去掉。
2、只能一次运算2个数，多了就出错。
3、即使运算2个数之后，将得数作为新的运算数再进行运算也会出错——必须按下AC（清零）。然后重新一次运算2个数，才不会出错。
4、就这样吧，主要是编一个界面。