#include <reg52.h>
#include <absacc.h>

#define uchar unsigned char
#define uint unsigned int

#define LcdCommand           XBYTE[0xFFFF]
#define LcdDataWrite         XBYTE[0xFFFE]

uchar code ZKWU[]=
{0x00,0x10,0x1F,0xF8,0x10,0x10,0x10,0x10,0x1F,0xF0,0x00,0x00,0x00,0x10,0x3F,
0xF8,0x01,0x00,0x01,0x04,0xFF,0xFE,0x02,0x80,0x02,0x40,0x04,0x20,0x18,0x1C,0x60,
0x08};

uchar code ZKLIN[]=
{0x10,0x20,0x10,0x20,0x10,0x20,0x10,0x20,0xFD,0xFE,0x10,0x20,0x10,0x60,0x38,0x70
,
0x34,0xB0,0x54,0xA8,0x51,0x28,0x92,0x26,0x14,0x24,0x10,0x20,0x10,0x20,0x10,0x20}
;           
                             
void Initialize(void);
void delay(uint);
void SetCursor(uchar,uchar);
void WriteOneWork(uchar,uchar,uchar *);
void WriteLine(uchar,uchar,uchar);

void main(void)
{
        SP=0x60;        
        EA=0;
        delay(0x30);
        Initialize();
        delay(0x9);
        LcdCommand=0x4f;        /* 光標地址自動向下增一 */
        
        WriteOneWork(0,0,ZKWU);

        WriteOneWork(0x2,0x80,ZKLIN);
                     
        while(1);
}

/******************************** 初始化LCD函數 
********************************/
void Initialize(void)
{
        uint i;
        
        LcdCommand=0x40;       /* ---------LCD SYSTEM SET系統設置令,8個參數-----
--- */
        LcdDataWrite=0x30;
        LcdDataWrite=0x87;
        LcdDataWrite=0x07;
        LcdDataWrite=39;       /* 顯示域長度為320dot */
        LcdDataWrite=0x36;     /* 確定液晶工作頻率 */
        LcdDataWrite=239;      /* 顯示屏高度為240dot */
        LcdDataWrite=40;       /* 顯示屏一行所占顯示緩沖區字節數(L) */
        LcdDataWrite=0;        /* 顯示屏一行所占顯示緩沖區字節數(H) */
        delay(0x9);
        
        LcdCommand=0x44;       /* ---------LCD SCROLL顯示區設置命令,最多10個參
數--------- */
        LcdDataWrite=0x00;     /* 顯示1區對應的顯示RAM起始高8位地址 */
        LcdDataWrite=0x00;     /* 顯示1區對應的顯示RAM起始低8位地址 */
        LcdDataWrite=240;      /* 顯示1區占用240個dot行 */
        LcdDataWrite=0x80;     /* 顯示2區對應的顯示RAM起始低8位地址 */
        LcdDataWrite=0x25;     /* 顯示2區對應的顯示RAM起始高8位地址 */
        LcdDataWrite=240;      /* 顯示3區占用240個dot行 */
        LcdDataWrite=0x00;     /* 顯示3區對應的顯示RAM起始低8位地址 */
        LcdDataWrite=0x4b;     /* 顯示3區對應的顯示RAM起始高8位地址 */
        delay(0x9);
        
        LcdCommand=0x5a;       /* 水平卷動,初始化時必須清零 */
        LcdDataWrite=0x00;
        delay(0x9);
        
        LcdCommand=0x5b;       /* 各個顯示區的合成方式,1個參數 */
        LcdDataWrite=0x1c;     /* 參數:顯示方式為三屏圖形疊加,邏輯或 */
        delay(0x9);
        
        LcdCommand=0x59;       /* 打開顯示,1個參數 */
        LcdDataWrite=0x04;     /* 只顯示第一個區并關閃爍 */
        delay(0x9);
        
        LcdCommand=0x4c;       /* 光標自動向右增一?*/
        delay(0x9);
        
        LcdCommand=0x46;       /* 設定光標位置命令 */
        LcdDataWrite=0;        /* 從0000位置開始 */
        LcdDataWrite=0;
        delay(0x9);
        
        LcdCommand=0x42;       /* 允許MPU連續地把顯示數據寫入顯示區內命令 */

        for(i=0;i<32760;i++)
        {
                LcdDataWrite=0;  /* 將32K顯緩全部清零，即LCD不顯示任何東西 */
        }
}

/* --------------------------設定光標,允許顯示------------------------- */
void SetCursor(uchar CursorHIGH,uchar CursorLOW)
{        
        delay(0x9);
        LcdCommand=0x46;       /* 設定光標位置命令 */
        LcdDataWrite=CursorLOW;        /* 從0000位置開始 */
        LcdDataWrite=CursorHIGH;
        delay(0x9);
        LcdCommand=0x42;       /* 允許MPU連續地把顯示數據寫入顯示區內命令 */
}

/* ---------------------------在指定位置顯示一個漢字--------------------------- 
*/
void WriteOneWork(uchar CurHIGH,uchar CurLOW,uchar * ZiKu)
{
        uchar i;
        SetCursor(CurHIGH,CurLOW);         /* 設定光標,允許顯示 */
        i=0;
        do
        {
                LcdDataWrite=ZiKu[i];
                i=i+2;
        }
        while(i<0x1e);

        SetCursor(CurHIGH,CurLOW+1);
        i=1;
        while(i<0x1f)
        {
                LcdDataWrite=ZiKu[i];
                i=i+2;
        }

} 


/* ----------------------延時子程序----------------------------- */
void delay(uint delx)
{
        uint i=0;
        while(i<delx)
        {
                i++;
        }
}