AVR驱动3.2英寸tft LCD（ssd1289）

2016-04-25 来源：eefocus

管脚连接

D0	PA0	D5	PA5	D10	PD2	D15	PD7
D1	PA1	D6	PA6	D11	PD3	CS	PB0
D2	PA2	D7	PA7	D12	PD4	RS	PB1
D3	PA3	D8	PD0	D13	PD5	WR	PB2
D4	PA4	D9	PD1	D14	PD6	RD	PB3
						RESET	PB4

#include
#include
#include
#define Setbit(val,bitn) (val|=(1<<(bitn)))
#define Clcbit(val,bitn) (val&=~(1<<(bitn)))

void delay_Nms(int n)
{
    unsigned int i;
   for(i=1;i<(300*n);i++);
}

void LCD_WR_DATA(char VH,char VL)
{
    Setbit(PORTB,1);//RS=1 PB1
   Setbit(PORTB,3);//RD=1 PB3
   Setbit(PORTB,2);//WR=1 PB2
   PORTD=VH;
   PORTA=VL;
   Clcbit(PORTB,0);//CS=0 PB0
   Clcbit(PORTB,2);//WR=0 PB2
   asm('nop');
   Setbit(PORTB,0);//CS=1 PB0
   Setbit(PORTB,2);//WR=1 PB2
}

void LCD_WR_ADDR(char addr)
{
    Clcbit(PORTB,1);//RS=0 PB1
   Setbit(PORTB,3);//RD=1 PB3
   Setbit(PORTB,2);//WR=1 PB2
   PORTD=0;
   PORTA=addr;
   Clcbit(PORTB,0);//CS=0 PB0
   Clcbit(PORTB,2);//WR=0 PB2
   asm('nop');
   Setbit(PORTB,0);//CS=1 PB0
   Setbit(PORTB,2);//WR=1 PB2
}

void LCD_WR_CMD(char addr,char cmdH,char cmdL)
{
    LCD_WR_ADDR(addr);
   LCD_WR_DATA(cmdH,cmdL);
}

void LCD_SetCursor(short Xpos,short Ypos)
{
    LCD_WR_CMD(0x4f,(Xpos>>8),Xpos);
   LCD_WR_CMD(0x4e,(Ypos>>8),Ypos);
}

void LCD_DrawPoint(short Xpos,short Ypos,short POINT_COLOR)
{
    LCD_SetCursor(Xpos,Ypos);
   LCD_WR_CMD(0x22,(POINT_COLOR>>8),POINT_COLOR);
}

void LCD_Init(void)
{
     LCD_WR_CMD(0x00,0x00,0x01);delay_Nms(10);
   LCD_WR_CMD(0x03,0xA8,0xA4);delay_Nms(5);
   LCD_WR_CMD(0x0C,0x00,0x00);delay_Nms(5);
   LCD_WR_CMD(0x0D,0x08,0x0C);delay_Nms(5);
   LCD_WR_CMD(0x0E,0x2B,0x00);delay_Nms(5);
   LCD_WR_CMD(0x1E,0x00,0xB0);delay_Nms(5);
   LCD_WR_CMD(0x01,0x2B,0x3F);delay_Nms(5);
   LCD_WR_CMD(0x02,0x06,0x00);delay_Nms(5);
   LCD_WR_CMD(0x10,0x00,0x00);delay_Nms(30);
   LCD_WR_CMD(0x11,0x60,0x70);delay_Nms(5);
   LCD_WR_CMD(0x05,0x00,0x00);delay_Nms(5);
   LCD_WR_CMD(0x06,0x00,0x00);delay_Nms(5);
   LCD_WR_CMD(0x16,0xEF,0x1C);delay_Nms(5);//
   LCD_WR_CMD(0x17,0x00,0x03);delay_Nms(5);
   LCD_WR_CMD(0x07,0x01,0x33);delay_Nms(5);
   LCD_WR_CMD(0x0B,0x00,0x00);delay_Nms(5);
   LCD_WR_CMD(0x0F,0x00,0x00);delay_Nms(5);
   LCD_WR_CMD(0x41,0x00,0x00);delay_Nms(5);
   LCD_WR_CMD(0x42,0x00,0x00);delay_Nms(5);
   LCD_WR_CMD(0x48,0x00,0x00);delay_Nms(5);
   LCD_WR_CMD(0x49,0x01,0x3F);delay_Nms(5);
   LCD_WR_CMD(0x4A,0x00,0x00);delay_Nms(5);
   LCD_WR_CMD(0x4B,0x00,0x00);delay_Nms(5);
   LCD_WR_CMD(0x44,0xEF,0x00);delay_Nms(5);
   LCD_WR_CMD(0x45,0x00,0x00);delay_Nms(5);
   LCD_WR_CMD(0x46,0x01,0x3F);delay_Nms(5);
   LCD_WR_CMD(0x30,0x07,0x07);delay_Nms(5);
   LCD_WR_CMD(0x31,0x02,0x04);delay_Nms(5);
   LCD_WR_CMD(0x32,0x02,0x04);delay_Nms(5);
   LCD_WR_CMD(0x33,0x05,0x02);delay_Nms(5);
   LCD_WR_CMD(0x34,0x05,0x07);delay_Nms(5);
   LCD_WR_CMD(0x35,0x02,0x04);delay_Nms(5);
   LCD_WR_CMD(0x36,0x02,0x04);delay_Nms(5);
   LCD_WR_CMD(0x37,0x05,0x02);delay_Nms(5);
   LCD_WR_CMD(0x3A,0x03,0x02);delay_Nms(5);
   LCD_WR_CMD(0x3B,0x03,0x02);delay_Nms(5);
   LCD_WR_CMD(0x23,0x00,0x00);delay_Nms(5);
   LCD_WR_CMD(0x24,0x00,0x00);delay_Nms(5);
   LCD_WR_CMD(0x25,0x80,0x00);delay_Nms(5);
   LCD_WR_CMD(0x4F,0x00,0x00);delay_Nms(5);
   LCD_WR_CMD(0x4E,0x00,0x00);delay_Nms(5);
}

void DispOneColor(unsigned int Color)
{
    unsigned int i,j;
   LCD_SetCursor(0,0);
   LCD_WR_ADDR(0x22);
   Setbit(PORTB,1);//RS=1 PB1
   PORTD=Color>>8;
   PORTA=Color;
   Clcbit(PORTB,0);//CS=0 PB0
   for(j=0;j<320;j++)
    {
        for(i=0;i<240;i++)
        {
            Clcbit(PORTB,2);//WR=0 PB2
            asm('nop');
            Setbit(PORTB,2);//WR=1 PB2
        }
    }
   Setbit(PORTB,0);//CS=1 PB0
}

void DrawLine(short x0,short y0,short x1,short y1,short color)
{
     short k;
   short dx;
   short dy;
   short dx2;
   short dy2;
   short e;
   short x;
   short y;
   if(x1    {
        k=x0;
       x0=x1;
       x1=k;
       k=y0;
       y0=y1;
       y1=k;
   }

   dx=x1-x0;
   dy=y1-y0;
   dx2=dx<<1;
   dy2=dy<<1;
   e=-dx;
   x=x0;
   y=y0;

   if(y1>=y0)
   {
               for(x=x0;x                {
                  LCD_DrawPoint(x,y,color);
                   e=e+dy2;
                   if(e>0)
                   {
                          y++;
                           e=e-dx2;
                   }
               }
   }

   else
   {
           e=dx;
           for (x=x0;x            {
                LCD_DrawPoint(x, y,color);
                  e=e+dy2;
                  if (e<0)
                  {
                      y--;
                   e=e+dx2;
                  }
           }
   }
}

void main(void)
{
    DDRA=0xff;
   //DDRC=0xff;
   DDRB=0xff;
   DDRD=0xff;
   //PORTD=0x00;
   //PORTC=0x00;
   Clcbit(PORTB,4);//RES=0
   asm('nop');
   Setbit(PORTB,4);//RES=1
   LCD_Init();
   DispOneColor(0x0000);
   //LCD_DrawPoint(180,150,0x0000);////
   DrawLine(180,150,60,200,0xFFFF);
   while(1);
}

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AVR 3.2英寸tft LCD ssd1289

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