lcd.c

DSP2812资料,包括原理图,测试程序,使用说明,[e-mail]

#include	"DSP28_Device.h"


extern const unsigned char *ASCIITAB[];
extern const unsigned char *Welcome[];
const unsigned char disline[8] = {0xFF,0x7F,0x3F,0x1F,0x0F,0x07,0x03,0x01};

//LCD初始化
void	lcd_init(void)
		{
			LCD_COM = 0x40;
			LCD_DAT = 0x30;
			LCD_DAT = 0x87;
			LCD_DAT = 0x07;
			LCD_DAT = 0x27;
			LCD_DAT = 0x46;  //2B
			LCD_DAT = 0xEF;
			LCD_DAT = 0x28;
			LCD_DAT = 0x00;
			
			LCD_COM = 0x44;
			LCD_DAT = 0x00;
			LCD_DAT = 0x00;
			LCD_DAT = 0xF0;
			LCD_DAT = 0x80;
			LCD_DAT = 0x25;
			LCD_DAT = 0xF0;
			LCD_DAT = 0x00;
			LCD_DAT = 0x4B;
			LCD_DAT = 0x00;
			LCD_DAT = 0x00;
			
			LCD_COM = 0x5A;
			LCD_DAT = 0x00;
			
			LCD_COM = 0x5B;
			LCD_DAT = 0x0C;

			LCD_COM = 0x4C;
						
			LCD_COM = 0x59;
			LCD_DAT = 0x04;
			
		}
//清除第一显示缓冲区		
void	clearscr1(void)
		{
			Uint16	i;
			LCD_COM = 0x46;
			LCD_DAT = 0x00;
			LCD_DAT = 0x00;
			LCD_COM = 0x4C;
			LCD_COM = 0x42;
			for (i=0;i<12240;i++) LCD_DAT=0x00;
		}

//清除第二显示缓冲区		
void	clearscr2(void)
		{
			Uint16	i;
			LCD_COM = 0x46;
			LCD_DAT = 0x00;
			LCD_DAT = 0x2A;
			LCD_COM = 0x4C;
			LCD_COM = 0x42;
			for (i=0x2A00;i<0x5400;i++) LCD_DAT=0x00;
		}
//清除第三显示缓冲区		
void	clearscr3(void)
		{
			Uint16	i;
			LCD_COM = 0x46;
			LCD_DAT = 0x00;
			LCD_DAT = 0x54;
			LCD_COM = 0x4C;
			LCD_COM = 0x42;
			for (i=0x5400;i<0x8000;i++) LCD_DAT=0x00;
		}


//设置光标位置
void    Set_Graphic_Csr(unsigned char x1,unsigned char y1)
	    {
			Uint16 add;
			add = 0;
			add += (x1+y1*40);
			LCD_COM = 0x46;
			LCD_DAT = (unsigned char)(add%256);
			LCD_DAT = (unsigned char)(add/256);
	    }


//画横线
void	lineh(Uint16 dotx0, Uint16 dotxt, Uint16 doty)
		{
			Uint16 add1,add2,ptemp,i;
			unsigned char dtemp;

			if(dotx0>dotxt)
			{
				ptemp = dotxt;
				dotxt = dotx0;
				dotx0 = ptemp;
			}
			add1 = doty*40 + dotx0/8;
			add2 = doty*40 + dotxt/8;
			LCD_COM = 0x46;
			LCD_DAT = (unsigned char)(add1%256);
			LCD_DAT = (unsigned char)(add1/256);
			LCD_COM = 0x42;
			if(add1 == add2)
			{
				dtemp = disline[dotx0%8];
				dtemp&= !(disline[dotxt%8]);
				LCD_DAT = dtemp;								 	
			}
			else
			{
				for(i=add1;i<=add2;i++)
				{
					if(i==add1)
					{
						dtemp = disline[dotx0%8];
						LCD_DAT = dtemp;
						LCD_COM = 0x46;
						LCD_DAT = (unsigned char)((i+1)%256);
						LCD_DAT = (unsigned char)((i+1)/256);
						LCD_COM = 0x42;
					}
					else if(i==add2)
					{
						dtemp = !(disline[dotxt%8]);
						LCD_DAT = dtemp;						
					}
					else  
					{
						dtemp = 0xFF;
						LCD_DAT = dtemp;
						LCD_COM = 0x46;
						LCD_DAT = (unsigned char)((i+1)%256);
						LCD_DAT = (unsigned char)((i+1)/256);
						LCD_COM = 0x42;
					}
				}
			}							 
      	}
  
   	   
//画竖线
void	linev(Uint16 dotx, Uint16 doty0, Uint16 dotyt)
		{
			Uint16 add1,add2,ptemp,i;
			unsigned char dtemp,oy;

			if(doty0>dotyt)
			{
				ptemp = dotyt;
				dotyt = doty0;
				doty0 = ptemp;
			}
			add1 = doty0*40 + dotx/8;
			add2 = dotyt*40 + dotx/8;
			oy = 0x80;
			dtemp = dotx%8;
			for(i=0;i<dtemp;i++)  oy>>= 1;
			dtemp = oy;
			for(i=add1;i<=add2;i++)
			{
				if(((i-add1)%40)==0)
				{
					LCD_COM = 0x46;
					LCD_DAT = (unsigned char)(i%256);
					LCD_DAT = (unsigned char)(i/256);
					LCD_COM = 0x42;
					LCD_DAT = dtemp;
				}				
			}												
		}



//显示字符
void 	ShowChar(unsigned char x1, unsigned char y1, unsigned char asccode) 
    	{
	        const unsigned char *pasc;
	        unsigned char ctemp;
			Uint16 i,ntemp;

			LCD_COM = 0x4F;
			Set_Graphic_Csr(x1,y1);
			pasc = ASCIITAB[0];
			ntemp= 16*(asccode-32)+15;

			LCD_COM = 0x42;
			for(i=0;i<16;i++)
			{
				ctemp = pasc[ntemp];
				ntemp--;
				LCD_DAT = ctemp;
			}
        }


//显示字符串
void    DispString(unsigned char t0x1, unsigned char t0y1, const unsigned char *pstr)
		{
		    unsigned char Tcode;
			Uint16 ntemp;
			ntemp = 0;
			Tcode = pstr[ntemp];
			while(Tcode!=0)
			{
				if(t0x1>39)
				{
					if(t0y1<232)
					{
						t0y1++;
						t0x1 = 0;
						ShowChar(t0x1,t0y1,Tcode);
						t0x1++;
					}
				}
				else if(t0y1<=232)
				{
					ShowChar(t0x1,t0y1,Tcode);
					t0x1++;
				}				
				ntemp++;
				Tcode = pstr[ntemp];
			}
		}

		
//***********************************************************************
//======================================================================
//=====================  PAGE  4  =======================================
//=======================================================================
//***********************************************************************

void	Smenu(void)
		{
			//ShowChar(39,0,49);
			DispString(14,115,Welcome[0]);
			linev(1,1,238);
			linev(318,1,238);
			lineh(1,319,1);
			lineh(1,319,238);
		}

//===============================================================