/*
   CodeVisionAVR C Compiler
    
   用于LCD LM6066 4bit 驅動

   連接方式

   con_PORTx3--->lcd 7pin /CS       片選,低有效
   con_PORTx4--->lcd 8pin /RS       =H 顯示數據,=L 命令數據
   con_PORTx5--->lcd 9pin /WR       寫使能 低有效
   con_PORTx6--->lcd 10pin /RD      讀使能 低有效
   con_PORTx7--->lcd 19pin /RST	    硬件復位,低電平復位

   data_PORTx0~7--->lcd 11~18pin D0~D7       IO

   //其它連線

   lcd 7pin /CS-->GND

   lcd 4pin VDD-->+5V

   lcd 3pin VSS-->GND

   lcd 21,23,25pin BLA-->+5V

   lcd 22,24,26pin BLK-->GND

   lcd 4pin VDD-----\
                    |
                    -
                   | |
   lcd 2pin V0 --->| | 20K~50K 對比度控制   
                   | |
                    -
                    |
   lcd 1pin VOUT----/

   使用方法:
    
   #asm
      .equ __lcd_data_port=0x18  ;PORTA  
      .equ __lcd_con_port=0x28  ;PORTB
      .equ __lcdcs=3
      .equ __lcdrs=4
      .equ __lcdwr=5
      .equ __lcdrd=6        
      .equ __lcdrst=7
   #endasm      
   #include <LCD-8BIT.h>    
*/          

#ifndef _LCD-8BIT_INCLUDED_
#define _LCD-8BIT_INCLUDED_ 

// 工作圖層常量定義
#define WORKPAGE0    (0b00)
#define WORKPAGE1    (0b01)
#define WORKPAGE2    (0b10)
#define WORKPAGEALL  (0b11)
   
// 顯示圖層常量定義    
#define VIEWRANK     ( (0b000<<4) | (0b00<<2) )
#define VIEWPAGE1    ( (0b001<<4) | (0b00<<2) )
#define VIEWPAGE2    ( (0b010<<4) | (0b00<<2) )
#define VIEWOR       ( (0b011<<4) | (0b00<<2) )
#define VIEWXOR      ( (0b011<<4) | (0b01<<2) )
#define VIEWNOR      ( (0b011<<4) | (0b10<<2) )
#define VIEWAND      ( (0b011<<4) | (0b11<<2) )   

#pragma used+

// 發送命令 --------------------------------------------------
void lcd_cmd(unsigned char reg,signed char com);

// 發送數據
void lcd_data(unsigned char data);

// 讀數據
unsigned char lcd_read_data(); 

// 讀寄存器
unsigned char lcd_read_com(unsigned char comreg);

//移到坐標
void lcd_gotoxy(unsigned char x,unsigned char y);

// 顯示字符C
void lcd_putchar(unsigned char c); 

// 發送顯示SRAM中的數據
void lcd_puts(unsigned char *str);

// 發送顯示flash中的數據
void lcd_putsf(unsigned char flash *str);

// 整屏的寫入數據
void lcd_fullscreenfill(unsigned char fill_data);

// 選擇工作圖層
void lcd_worklayer(unsigned char n);

// 顯示圖層設置
void lcd_viewlayer(unsigned char m);

// LCD清屏
void lcd_cls(unsigned char page);

// 設置為文本模式
void lcd_asc();

// 設置為圖形模式
void lcd_pic();

// 在屏幕中指定位置顯示一個點
void lcd_viewpiont(unsigned int x,unsigned char y);

// 在屏幕中清除指定位置的點
void lcd_clspiont(unsigned int x,unsigned char y);
                                
// 初始化
void lcd_init(unsigned int x,unsigned int y);

#pragma used-

#pragma library LCD-8BIT.lib

#endif