四则运算器设计

只看该作者 · 2016-12-19 10:59

本帖最后由 smzcky 于 2016-12-20 16:51 编辑

如图，首先需要在lcd显示数字键盘，运算符号，还要显示你所输入的运算式，按键和运算式的具体关系该怎么编辑程序。程序该怎么写，我需要具体的流程，请指教。

只看该作者 · 2016-12-20 16:24

本帖最后由 smzcky 于 2016-12-20 16:50 编辑

#include "led.h"
#include "delay.h"
#include "sys.h"
#include "usart.h"
#include "lcd.h"
#include "key.h"

int main(void)
{

      u8 lcd_id[12];
      delay_init();
      uart_init(9600);
      LED_Init();
      LCD_Init();
      KEY_Init();
      sprintf((char*)lcd_id,"LCD ID:%04X",lcddev.id);
      while(1)
      {
            BACK_COLOR=WHITE;
      POINT_COLOR = BLACK;
            LCD_DrawLine(0,0,240,0);
            LCD_DrawLine(0,0,0,320);
      LCD_DrawLine(240,0,240,320);
      LCD_DrawLine(0,80,240,80);
            LCD_DrawLine(0,140,180,140);
            LCD_DrawLine(0,200,240,200);
            LCD_DrawLine(0,260,180,260);
            LCD_DrawLine(0,320,240,320);
            LCD_DrawLine(60,80,60,320);
            LCD_DrawLine(120,80,120,320);
            LCD_DrawLine(180,80,180,320);
            LCD_ShowString(20,100,360,360,24,"7");
            LCD_ShowString(80,100,360,360,24,"8");
            LCD_ShowString(140,100,360,360,24,"9");
            LCD_ShowString(20,160,360,360,24,"4");
            LCD_ShowString(80,160,360,360,24,"5");
            LCD_ShowString(140,160,360,360,24,"6");
            LCD_ShowString(20,220,360,360,24,"1");
            LCD_ShowString(80,220,360,360,24,"2");
            LCD_ShowString(140,220,360,360,24,"3");
            LCD_ShowString(20,280,360,360,24,"0");
            LCD_ShowString(80,280,360,360,24,"*");
            LCD_ShowString(140,280,360,360,24,"/");
            LCD_ShowString(200,120,360,360,24,"+");
            LCD_ShowString(200,240,360,360,24,"-");


      }

}
写了半天才画出计算器的基本框架，不知道按键控制的具体函数，按键按下去怎么让它显示在屏幕上具体数字符号上有闪烁之类，还有算法程序，求指教。

只看该作者 · 2016-12-21 21:51

每个按键都有回掉函数，按下不同按键，执行相应程序

四则运算器设计

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