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標(biāo)題: lcd12864按鍵測(cè)試單個(gè)菜單顯示 stc89c52rc單片機(jī) [打印本頁(yè)]

作者: 朝朝1 時(shí)間: 2021-2-2 18:35
標(biāo)題: lcd12864按鍵測(cè)試單個(gè)菜單顯示 stc89c52rc單片機(jī)
/*-----------------------------------------------
  名稱：按鍵測(cè)試單個(gè)菜單顯示
  編寫(xiě)：shifang
  修改：無(wú)
  內(nèi)容：?jiǎn)蝹€(gè)菜單，多頁(yè)顯示，不帶子菜單
------------------------------------------------*/
#include <reg52.h>
#include <intrins.h>

sbit RS = P1^0;
sbit RW = P1^1;
sbit E  = P2^5;
sbit RES = P2^3;
sbit PSB = P1^3;
sbit PAUSE = P3^0;
sbit beep=P2^3;

#define DataPort P0       //單片機(jī) P0<------> 液晶DB0-DB7

sbit KEY_ADD=P3^4;       //定義按鍵輸入端口
sbit KEY_DEC=P3^5;
sbit k3=P3^6;

unsigned char curr,currold;//全局變量，當(dāng)前箭頭位置

unsigned char code user16x16[]={ //箭頭圖片
0x00,0x00,0x20,0x00,0x30,0x00,0x38,0x00,0x3C,0x00,0x3E,0x00,0x3F,0x00,0x3F,0x80,
0x3F,0xC0,0x3F,0x80,0x3F,0x00,0x3E,0x00,0x3C,0x00,0x38,0x00,0x30,0x00,0x20,0x00,

};
unsigned char code *MainMenu[]=
{
{"  1.蜂鳴器響"},
{"  2.蜂鳴器滅"},
{"  3.蜂鳴器亮"},
{"  4.蜂鳴器滅"},
{"  5.蜂鳴器亮"},
{"  6.蜂鳴器滅"},

};
/*------------------------------------------------
                  檢測(cè)忙位
------------------------------------------------*/
void DelayUs2x(unsigned char t)
{
while(--t);
}
/*------------------------------------------------
mS延時(shí)函數(shù)，含有輸入?yún)?shù) unsigned char t，無(wú)返回值
unsigned char 是定義無(wú)符號(hào)字符變量，其值的范圍是
0~255 這里使用晶振12M，精確延時(shí)請(qǐng)使用匯編
------------------------------------------------*/
void DelayMs(unsigned char t)
{

while(t--)
{
   //大致延時(shí)1mS
   DelayUs2x(245);
      DelayUs2x(245);
}
}

void Check_Busy()
{
RS=0;
RW=1;
E=1;
DataPort=0xff;
while((DataPort&0x80)==0x80);//忙則等待
E=0;
}
/*------------------------------------------------
               寫(xiě)命令
------------------------------------------------*/
void Write_Cmd(unsigned char Cmd)
{
      Check_Busy();
      RS=0;
      RW=0;
      E=1;
      DataPort=Cmd;
      DelayUs2x(5);
      E=0;
      DelayUs2x(5);
}
/*------------------------------------------------
                  寫(xiě)數(shù)據(jù)
------------------------------------------------*/
void Write_Data(unsigned char Data)
{
      Check_Busy();
      RS=1;
      RW=0;
      E=1;
      DataPort=Data;
      DelayUs2x(5);
      E=0;
      DelayUs2x(5);
}
/*------------------------------------------------
               液晶屏初始化
------------------------------------------------*/
void Init_ST7920()
{
DelayMs(40);          //大于40MS的延時(shí)程序
PSB=1;                //設(shè)置為8BIT并口工作模式
DelayMs(1);          //延時(shí)
RES=0;                //復(fù)位
DelayMs(1);          //延時(shí)
RES=1;                //復(fù)位置高
DelayMs(10);
Write_Cmd(0x30);    //選擇基本指令集
DelayUs2x(50);       //延時(shí)大于100us
Write_Cmd(0x30);    //選擇8bit數(shù)據(jù)流
DelayUs2x(20);       //延時(shí)大于37us
Write_Cmd(0x0c);    //開(kāi)顯示(無(wú)游標(biāo)、不反白)
DelayUs2x(50);       //延時(shí)大于100us
Write_Cmd(0x01);    //清除顯示，并且設(shè)定地址指針為00H
DelayMs(15);          //延時(shí)大于10ms
Write_Cmd(0x06);    //指定在資料的讀取及寫(xiě)入時(shí)，設(shè)定游標(biāo)的移動(dòng)方向及指定顯示的移位，光標(biāo)從右向左加1位移動(dòng)
DelayUs2x(50);       //延時(shí)大于100us
}
/*------------------------------------------------
               用戶自定義字符
------------------------------------------------*/
void CGRAM()
{
   int i;
   Write_Cmd(0x30);
   Write_Cmd(0x40);
   for(i=0;i<16;i++)
   {
         Write_Data(user16x16[i*2]);
      Write_Data(user16x16[i*2+1]);
   }
}
/*------------------------------------------------
               顯示用戶自定義字符
------------------------------------------------*/
void DisplayCGRAM(unsigned char x,unsigned char y)
{
switch(y)
   {
      case 1: Write_Cmd(0x80+x);break;
      case 2: Write_Cmd(0x90+x);break;
      case 3: Write_Cmd(0x88+x);break;
      case 4: Write_Cmd(0x98+x);break;
   default:break;
      }
Write_Data(00);
Write_Data(00);

}
/*------------------------------------------------
               顯示字符串
x:橫坐標(biāo)值，范圍0~8
y:縱坐標(biāo)值，范圍1~4
------------------------------------------------*/

void LCD_PutString(unsigned char x,unsigned char y,unsigned char code *s)
{
switch(y)
   {
      case 1: Write_Cmd(0x80+x);break;
      case 2: Write_Cmd(0x90+x);break;
      case 3: Write_Cmd(0x88+x);break;
      case 4: Write_Cmd(0x98+x);break;
   default:break;
      }
while(*s>0)
{
   Write_Data(*s);
   s++;
   DelayUs2x(50);
}
}
/*------------------------------------------------
                  清屏
------------------------------------------------*/
void ClrScreen()
{
Write_Cmd(0x01);
DelayMs(15);
}

/*------------------------------------------------
               顯示圖片
------------------------------------------------*/
/*void LCD_PutGraphic(unsigned char code *img)
{
int i,j;
//顯示上半屏內(nèi)容設(shè)置
for(i=0;i<32;i++)
{
   Write_Cmd(0x80 + i); //SET  垂直地址 VERTICAL ADD
   Write_Cmd(0x80);    //SET  水平地址 HORIZONTAL ADD
   for(j=0;j<16;j++)
   {
      Write_Data(*img);
      img++;
   }
}
//顯示下半屏內(nèi)容設(shè)置
for(i=0;i<32;i++)
{
   Write_Cmd(0x80 + i); //SET 垂直地址 VERTICAL ADD
   Write_Cmd(0x88);    //SET 水平地址 HORIZONTAL ADD
   for(j=0;j<16;j++)
   {
      Write_Data(*img);
      img++;
   }
}

}*/
/*------------------------------------------------
               設(shè)置到繪圖模式
------------------------------------------------*/
/*void SetGraphicMode()
{
Write_Cmd(0x36);    //選擇8bit數(shù)據(jù)流圖形模式
DelayUs2x(20);

}*/
/*------------------------------------------------
               調(diào)用顯示更新
------------------------------------------------*/
void DisplayUpdata(void)
{
unsigned char num;
      ClrScreen();
      num=sizeof(MainMenu)/sizeof(MainMenu[0]);//判斷數(shù)組中數(shù)值個(gè)數(shù)
      if((0+(curr/4)*4)<num)
   LCD_PutString(0,1,MainMenu[0+(curr/4)*4]);
      else //如果超出數(shù)組最大元素，則寫(xiě)空信息，不判斷此信息可能會(huì)出現(xiàn)亂碼
      LCD_PutString(0,1,"");

      if((1+(curr/4)*4)<num)
      LCD_PutString(0,2,MainMenu[1+(curr/4)*4]);
      else
      LCD_PutString(0,2,"");

      if((2+(curr/4)*4)<num)
      LCD_PutString(0,3,MainMenu[2+(curr/4)*4]);
      else
      LCD_PutString(0,3,"");

      if((3+(curr/4)*4)<num)
      LCD_PutString(0,4,MainMenu[3+(curr/4)*4]);
      else

      LCD_PutString(0,4,"");
      DisplayCGRAM(0,curr%4+1);

}
/*------------------------------------------------
               主程序
------------------------------------------------*/
main()
{

  Init_ST7920(); //初始化
  CGRAM();    //寫(xiě)入自定義字符
  DisplayUpdata();
while(1)
{

// beep=0;
if(curr!=currold) //光標(biāo)位置變化，則更新顯示
      {
DisplayUpdata();
      currold=curr;
      }

if(!KEY_ADD)  //如果檢測(cè)到低電平，說(shuō)明按鍵按下
{
      DelayMs(10); //延時(shí)去抖，一般10-20ms
   if(!KEY_ADD)    //再次確認(rèn)按鍵是否按下，沒(méi)有按下則退出
         {
      while(!KEY_ADD);//如果確認(rèn)按下按鍵等待按鍵釋放，沒(méi)有釋放則一直等待
            {
               if(curr<sizeof(MainMenu)/sizeof(MainMenu[0])-1)//判斷數(shù)組中數(shù)值個(gè)數(shù)
                  {
                        curr++;
            }
                     }
         }
      }

if(!KEY_DEC)  //如果檢測(cè)到低電平，說(shuō)明按鍵按下
{
      DelayMs(10); //延時(shí)去抖，一般10-20ms
   if(!KEY_DEC)    //再次確認(rèn)按鍵是否按下，沒(méi)有按下則退出
         {
      while(!KEY_DEC);//如果確認(rèn)按下按鍵等待按鍵釋放，沒(méi)有釋放則一直等待
            {
            if(curr>0)
                  {
                        curr--;

            }
                  }
         }
      }
      if(k3==0)
      {
      switch(curr)
      {
      case 0: beep=0; break;
      case 1: beep=1; break;
      case 2: beep=0; break;
      case 3: beep=1; break;
      case 4: beep=0; break;
      case 5: beep=1; break;
      }
  }
}
}

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