#include"config.h"

//************LCD底層函數

void LCD_Cls(void) //清屏
{LCD_Busy();
 RS=0;
 RW=0;
 DB=0x01;
 E=1;
 _nop_();
 _nop_();
 E=0;
}

void LCD_Screen(void) //屏幕開禁止光標
{LCD_Busy();
 RS=0;
 RW=0;
 DB=0x0c;
 E=1;
 _nop_();
 _nop_();
 E=0;
}

void LCD_Busy(void) //檢測忙
{DB=0xff;
 RS=0;
 RW=1;
 E=1;
 while(BF==1);
 E=0;
}

void LCD_Write_Code(unsigned char CODE) //寫字符
{LCD_Busy();
 RS=1;
 RW=0;
 DB=CODE;
 E=1;
 _nop_();
 _nop_();
 E=0;
}

void LCD_Addr(unsigned char ADDR) //顯示位置
{LCD_Busy();
 RS=0;
 RW=0;
 DB=ADDR;
 E=1;
 _nop_();
 _nop_();
 E=0;
}

void LCD_Comm_Basic(void) //8位基本指令
{LCD_Busy();
 RS=0;
 RW=0;
 DB=0x30;
 E=1;
 _nop_();
 _nop_();
 E=0;
}

void LCD_Comm_Add(void) //8位擴展指令
{LCD_Busy();
 RS=0;
 RW=0;
 DB=0x34;
 E=1;
 _nop_();
 _nop_();
 E=0;
}

void LCD_Input(void) //顯示光標
{LCD_Busy();
 RS=0;
 RW=0;
 DB=0x0f;
 E=1;
 _nop_();
 _nop_();
 E=0;
}

void LCD_Right_Mov(void) //光標右移
{LCD_Busy();
 RS=0;
 RW=0;
 DB=0x14;
 E=1;
 _nop_();
 _nop_();
 E=0;
}

void LCD_Left_Mov(void) //光標左移
{LCD_Busy();
 RS=0;
 RW=0;
 DB=0x10;
 E=1;
 _nop_();
 _nop_();
 E=0;
}

unsigned char LCD_Read_RAM(void) //讀RAM
{unsigned char DATA;
 LCD_Busy();
 RS=1;
 RW=1;
 E=1;
 _nop_();
 DATA=DB;
 E=0;
 LCD_Busy();    //第二次讀有效
 RS=1;
 RW=1;
 E=1;
 _nop_();
 DATA=DB;
 E=0;
 return(DATA);
}

unsigned char LCD_Read_Addr(void) //讀位置參數
{unsigned char PLACE;
 LCD_Busy();
 RS=0;
 RW=1;
 E=1;
 _nop_();
 PLACE=DB;
 E=0;
 return(PLACE);
}