cgm12864b.c

液晶点阵模块。

	LCD_E=1;
	while (LCD_DATA&0x80);
	LCD_CS2=!SELECTCS;
}

void LCD_WaitReady2(void) //判断LCD控制芯片KS0108是否忙
{
	LCD_DATA=0xff;
	_nop_();
	LCD_CS1=SELECTCS;
	LCD_RW=1;
	LCD_RS=0;
	LCD_E=1;
	while (LCD_DATA&0x80);
	LCD_CS1=!SELECTCS;
}

void LCD_WriteCommand1(char ch) //向LCD控制芯片KS0108发送控制命令
{
	LCD_WaitReady1();
	LCD_CS2=SELECTCS;
	LCD_RW=0;
	LCD_RS=0;
	LCD_DATA=ch;
	LCD_E=1;
	LCD_E=0;
	LCD_CS2=!SELECTCS;
}

void LCD_WriteCommand2(char ch)	//向LCD控制芯片KS0108发送控制命令
{
	LCD_WaitReady2();
	LCD_CS1=SELECTCS;
	LCD_RW=0;
	LCD_RS=0;
	LCD_DATA=ch;
	LCD_E=1;
	LCD_E=0;
	LCD_CS1=!SELECTCS;
}

void LCD_WriteData1(char ch)	//向LCD控制芯片KS0108发送数据命令
{
	LCD_WaitReady1();
	LCD_CS2=SELECTCS;
	LCD_RW=0;
	LCD_RS=1;
	LCD_DATA=ch;
	LCD_E=1;
	LCD_E=0;
	LCD_CS2=!SELECTCS;
}

void LCD_WriteData2(char ch)	//向LCD控制芯片KS0108发送数据命令
{
	LCD_WaitReady2();
	LCD_CS1=SELECTCS;
	LCD_RW=0;
	LCD_RS=1;
	LCD_DATA=ch;
	LCD_E=1;
	LCD_E=0;
	LCD_CS1=!SELECTCS;
}

/*--  文字:  汉  --*/
char code Han[]=
{
0x00,0x10,0x61,0x06,0xC0,0x30,0x02,0x3E,0xC2,0x02,0x82,0x62,0x1F,0x02,0x00,0x00,
0x00,0x02,0x02,0x3F,0x20,0x20,0x10,0x08,0x05,0x02,0x05,0x08,0x10,0x30,0x10,0x00,
};
/*--  文字:  字  --*/
char code Zi[]=
{
0x00,0x00,0x10,0x0C,0x14,0x14,0x14,0x15,0xD6,0x54,0x34,0x14,0x14,0x8C,0x00,0x00,
0x00,0x01,0x01,0x01,0x01,0x01,0x11,0x21,0x1F,0x01,0x01,0x01,0x01,0x01,0x01,0x00,
};

void LCD_WriteHZ(char x,char y,char *Dot) //显示16*16点阵汉字
{
char i;
	for (i=0;i<32;i++)
	{
		if ((x+i%16)<64)
		{
			LCD_WriteCommand1(0xB8+y+i/16);
			LCD_WriteCommand1(0x40+x+i%16);
			LCD_WriteData1(Dot[i]);
		}
		else
		{
			LCD_WriteCommand2(0xB8+y+i/16);
			LCD_WriteCommand2(0x40+x-64+i%16);
			LCD_WriteData2(Dot[i]);
		}
	}
}

void InitLCD(void)	//初始化LCD
{
	char i,j;
	LCD_RST=0;
	Delay1ms(1);
	LCD_RST=1;

	LCD_WriteCommand1(0xc0);	
	LCD_WriteCommand2(0xc0);
	LCD_WriteCommand1(0x3f);  	//开显示
	LCD_WriteCommand2(0x3f);

	for (j=0;j<8;j++)			//清屏
	{
		LCD_WriteCommand1(0xB8+j);	//清左半屏
		LCD_WriteCommand1(0x40);
		for (i=0;i<64;i++)
			LCD_WriteData1(0x00);

		LCD_WriteCommand2(0xB8+j);	//清右半屏
		LCD_WriteCommand2(0x40);
		for (i=0;i<64;i++)
			LCD_WriteData2(0x00);
	}
}

void DispBmp(char *buf)	//显示一幅位图
{
int i,j;
	for (j=0;j<8;j++)			//显示位图
	{
		LCD_WriteCommand1(0xB8+j);	
		LCD_WriteCommand1(0x40);
		for (i=0;i<64;i++)
			LCD_WriteData1(buf[(j*2)*64+i]);
		LCD_WriteCommand2(0xB8+j);	
		LCD_WriteCommand2(0x40);
		for (i=0;i<64;i++)
			LCD_WriteData2(buf[(j*2+1)*64+i]);
	}
}

void SYSCLK_Init (void)
{
   int i;                              // delay counter
   OSCXCN = 0x67;                      // start external oscillator with
                                       // 18.432MHz crystal
   for (i=0; i < 256; i++) ;           // Wait for osc. to start up
   while (!(OSCXCN & 0x80)) ;          // Wait for crystal osc. to settle
   OSCICN = 0x88;                      // select external oscillator as SYSCLK
                                       // source and enable missing clock
                                       // detector
}

void PORT_Init (void)
{
   XBR2    = 0x40;                     // Enable crossbar and weak pull-ups
}


unsigned char Count1ms;
void Timer0_Init (void)
{
   	CKCON|=0x8;
   	TMOD|=0x1;    	//16Bit
	Count1ms=10;
   	TR0 = 0;                         	// STOP Timer0
   	TH0 = (-SYSCLK/1000) >> 8;    		// set Timer0 to overflow in 1ms
   	TL0 = -SYSCLK/1000;
   	TR0 = 1;   	// START Timer0
   	IE|= 0x2; 
}

void Timer0_ISR (void) interrupt 1  //1ms
{
	TH0 = (-SYSCLK/1000) >> 8;  
   	TL0 = -SYSCLK/1000;
	if (Count1ms) Count1ms--;
}

void Delay1ms(unsigned char T)
{
	Count1ms=T;
	while (Count1ms);
}

void Delay1s(unsigned char T)
{
	while (T)
	{
		Delay1ms(200);
		Delay1ms(200);
		Delay1ms(200);
		Delay1ms(200);
		Delay1ms(200);
		T--;
	}
}

void TestLCD(void)
{
	char i;
	InitLCD();
	DispBmp(screen);
	for (i=0;i<64;i++)
	{
		Delay1ms(50);
		LCD_WriteCommand1(0xc0+i%64);	//设置起始行,实现向上滚动
		LCD_WriteCommand2(0xc0+i%64);
	}
	Delay1s(3);
	for (;;)
	{
		DispBmp(screen1);
		Delay1s(5);
		DispBmp(screen2);
		Delay1s(6);
		InitLCD();
		LCD_WriteHZ(2,1,Han); //显示16*16点阵汉字'汉'
        Delay1ms(100);
		LCD_WriteHZ(60,3,Zi); //显示16*16点阵汉字'字'
		Delay1s(5);
	}
}

void main (void) 
{
	WDTCN = 0xde;
	WDTCN = 0xad;           //关看门狗
	SYSCLK_Init ();         //初始化时钟
	Timer0_Init();			//初始化定时器
	PORT_Init ();           //初始化IO口
	EA=1;					//开中断
 	TestLCD();
}