按键切换屏幕

Z澤E · 发表于 2018-10-10 16:52:44

使用按键怎么样可以实现lcd屏幕的切换，程序是怎样的？

douxiaolingyun · 发表于 2018-10-11 13:42:57

给你提供一个思路。简单点的就是将每个界面都设一个值，用Switch判断值，没次按下按键这个界面值就变化一次。

void we(void)
{    LCM_clr();          //清屏
   delay_ms(50);
   switch(PageNum)//// 判断界面值
{
case 0:
{
LCD_Write_String(1,0,"电器 ");
LCD_Write_String(1,3,"电压    V");
LCD_Write_String(2,0,"电流       mA");
LCD_Write_String(3,0,"功率          W");
LCD_Write_String(4,0,"功率因数    %");
}break;
case 1:
   {
LCD_Write_String(1,0,"Please insert ");

   }break;
case 2:
   {
   LCD_Write_String(1,0,"Learning.....");
   LCD_Write_String(2,0," Do not touch");
   LCD_Write_String(3,0,"app is");
   LCM_WriteCom(0x8C);
   LCM_WriteDat(num+0x30);
                     LCD_Write_String(4,0,"Prees key 2 Save");
   }break;
}