th.txt

niosII(12864)lcd基本指令定义

#ifndef __LCD_12864_H_
#define __LCD_12864_H_
#include "system.h"
#include "DELAY.h"

/***********************************************************/
/*DELAY set to delay time for LCD finishing its operation,*/ 
/*When CPU Frequancy is 50MHZ, DELAY set as 2000*/
/*When CPU Frequancy is other value, DELAY set as other value*/
/*For example,when CPU Frequancy is 100MHZ, DELAY set as 4000*/
/*************************************************************/
#define LCD_DATA *(unsigned int *)LCD_DATA_BASE
#define LCD_DATA_DIR *(unsigned int *)(LCD_DATA_BASE+4)
#define LCD_RW *(unsigned int *)LCD_RW_BASE
#define LCD_RS *(unsigned int *)LCD_RS_BASE
#define LCD_EN *(unsigned int *)LCD_EN_BASE

#define LCD_DATA_IN  0x0    //读,输入
#define LCD_DATA_OUT 0xFF  //写,输出
//#define busy 1             //忙
//#define not_busy 0         //空闲,等待状态

//void lcd_check_busy(void);
//12864m内部寄存器地址///////////////////////////////////

//基本指令集
#define lcd_clear_display           0x1       //清除显示
#define lcd_address_to_zero         0x2       //位址归位1
#define lcd_address_to_zero2        0x4       //位址归位2
#define lcd_display_state           0x8       //显示状态
#define lcd_display_shift_control   0x10      //游标或显示移位控制
#define lcd_funtion_base            0x30      //设置基本指令集
#define lcd_funtion_additional      0x34      //设定扩展指令集
#define lcd_set_cgram_address       0x40      //设定CGRAM位址
#define lcd_set_ddram_address       0x80      //设定DDRAM位址

//扩展指令集
#define lcd_standby_mode            0x1       //待命模式
#define lcd_move_select             0x2       //卷动位址或IRAM位址选择
#define lcd_reverse_video_select    0x4       //反白选择
#define lcd_sleepmode_enable        0x8       //睡眠模式开
#define lcd_sleepmode_disable       0xc       //睡眠模式关
#define lcd_funtion_base            0x30      //设置基本指令集
#define lcd_funtion_additional      0x34      //设定扩展指令集
#define lcd_set_move_address        0x40      //设定IRAM位址或卷动位址
#define lcd_gdram_address           0x80      //设定绘图RAM位址