TFT显示不正常-正点原子的回答

TFT显示不正常

2019-10-14 22:52发布

12005 2

程序如下
u16 POINT_COLOR = 0x0000,BACK_COLOR = 0xFFFF;

void TFT_SPI_Write_Byte(u8 num)
{
      u8 count=0;

      for(count=0;count<8;count++)
      {
            CLR_SCL();
            if(num&0x80)SET_SDI();
            else CLR_SDI();
            num<<=1;
            SET_SCL();
      }
}

void LCD_WR_REG(u8 CMD)
{
      CLR_CS();
      CLR_SCL();
      CLR_SDI();
      SET_SCL();
      TFT_SPI_Write_Byte(CMD);
      SET_CS();
}

void LCD_WR_DATA(u8 DATA)
{
   CLR_CS();
      CLR_SCL();
      SET_SDI();
      SET_SCL();
      TFT_SPI_Write_Byte(DATA);
      SET_CS();

}
//*****************************************************************************************

//*************************************************************************

void LCD_WriteRAM_Prepare(void)
{
      LCD_WR_REG(0X2C);
}


//开启显示
void LCD_DisplayOn(void)
{
      LCD_WR_REG(0X29);
}

//LCD关闭显示
void LCD_DisplayOff(void)
{
      LCD_WR_REG(0X28);
}

//设置光标
inline void LCD_SetCursor(u16 Xpos, u16 Ypos)
{
#if USE_HORIZONTAL

      #else
      LCD_WR_REG(0x2A);
      LCD_WR_DATA(Xpos>>8);
      LCD_WR_DATA(0xFF&Xpos);

      LCD_WR_REG(0x2B);
      LCD_WR_DATA(Ypos>>8);
      LCD_WR_DATA(0xFF&Ypos);

      #endif
}

//画点
void LCD_DrawPoint(u16 x,u16 y)
{
      LCD_SetCursor(x,y);
      LCD_WriteRAM_Prepare();
  LCD_WR_DATA(POINT_COLOR>>8);
      LCD_WR_DATA(POINT_COLOR);
}

//清屏
void LCD_Clear(u16 Color)
{
      u32 index=0;
      LCD_SetCursor(0x00,0x0000);
      LCD_WriteRAM_Prepare();
      for(index=0;index<320*240;index++)
      {
            LCD_WR_DATA(Color>>8);
            LCD_WR_DATA(Color);
      }
}
//填充颜 {MOD}
void LCD_Fill(u16 xsta,u16 ysta,u16 xend,u16 yend,u16 color)
{
      u16 i,j;
      u16 xlen=0;
#if USE_HORIZONTAL==1
      xlen=yend-ysta+1;
      for(i=xsta;i<=xend;i++)
      {
               LCD_SetCursor(i,ysta);
            LCD_WriteRAM_Prepare();
            for(j=0;j<xlen;j++)
            {
                     LCD_WR_DATA(color>>8);
                     LCD_WR_DATA(color);
            }
      }
#else
      xlen=xend-xsta+1;
      for(i=ysta;i<=yend;i++)
      {
               LCD_SetCursor(xsta,i);
            LCD_WriteRAM_Prepare();
            for(j=0;j<xlen;j++)
            {
                     LCD_WR_DATA(color>>8);
                     LCD_WR_DATA(color);
            }
      }
#endif
}

//画线
void LCD_DrawLine(u16 x1, u16 y1, u16 x2, u16 y2)
{
      u16 t;
      int xerr=0,yerr=0,delta_x,delta_y,distance;
      int incx,incy,uRow,uCol;

      delta_x=x2-x1;
      delta_y=y2-y1;
      uRow=x1;
      uCol=y1;
      if(delta_x>0)incx=1;
      else if(delta_x==0)incx=0;
      else {incx=-1;delta_x=-delta_x;}
      if(delta_y>0)incy=1;
      else if(delta_y==0)incy=0;
      else{incy=-1;delta_y=-delta_y;}
      if( delta_x>delta_y)distance=delta_x;
      else distance=delta_y;
      for(t=0;t<=distance+1;t++ )
      {
            LCD_DrawPoint(uRow,uCol);
            xerr+=delta_x ;
            yerr+=delta_y ;
            if(xerr>distance)
            {
                     xerr-=distance;
                     uRow+=incx;
            }
            if(yerr>distance)
            {
                     yerr-=distance;
                     uCol+=incy;
            }
      }
}
//画矩形
void LCD_DrawRectangle(u16 x1, u16 y1, u16 x2, u16 y2)
{
      LCD_DrawLine(x1,y1,x2,y1);
      LCD_DrawLine(x1,y1,x1,y2);
      LCD_DrawLine(x1,y2,x2,y2);
      LCD_DrawLine(x2,y1,x2,y2);
}

//画圆
void Draw_Circle(u16 x0,u16 y0,u8 r)
{
      int a,b;
      int di;
      a=0;b=r;
      di=3-(r<<1);
      while(a<=b)
      {
            LCD_DrawPoint(x0-b,y0-a);          //3
            LCD_DrawPoint(x0+b,y0-a);          //0
            LCD_DrawPoint(x0-a,y0+b);          //1
            LCD_DrawPoint(x0-b,y0-a);          //7
            LCD_DrawPoint(x0-a,y0-b);          //2
            LCD_DrawPoint(x0+b,y0+a);          //4
            LCD_DrawPoint(x0+a,y0-b);          //5
            LCD_DrawPoint(x0+a,y0+b);          //6
            LCD_DrawPoint(x0-b,y0+a);
            a++;

            if(di<0)di +=4*a+6;
            else
            {
                     di+=10+4*(a-b);
                     b--;
            }
            LCD_DrawPoint(x0+a,y0+b);
      }
}

//显示字符
void LCD_ShowChar(u16 x,u16 y,u8 num,u8 size,u8 mode)
{
#if USE_HORIZONTAL==1
#define MAX_CHAR_POSX 312
#define MAX_CHAR_POSY 232
#else
#define MAX_CHAR_POSX 232
#define MAX_CHAR_POSY 312
#endif
u8 temp;
u8 pos,t;
      u16 x0=x;
      u16 colortemp=POINT_COLOR;
if(x>MAX_CHAR_POSX||y>MAX_CHAR_POSY)return;

      num=num-' ';
      if(!mode)
      {
            for(pos=0;pos<size;pos++)
            {
                     if(size==12)temp=asc2_1206[num][pos];
                     else temp=asc2_1608[num][pos];
                     for(t=0;t<size/2;t++)
                  {
                     if(temp&0x01)POINT_COLOR=colortemp;
                              else POINT_COLOR=BACK_COLOR;
                              LCD_DrawPoint(x,y);
                              temp>>=1;
                              x++;
                  }
                     x=x0;
                     y++;
            }
      }else
      {
            for(pos=0;pos<size;pos++)
            {
                     if(size==12)temp=asc2_1206[num][pos];
                     else temp=asc2_1608[num][pos];
                     for(t=0;t<size/2;t++)
                  {
                     if(temp&0x01)LCD_DrawPoint(x+t,y+pos);
                     temp>>=1;
                  }
            }
      }
      POINT_COLOR=colortemp;
}

u32 mypow(u8 m,u8 n)
{
      u32 result=1;
      while(n--)result*=m;
      return result;
}

//显示数字
void LCD_ShowNum(u16 x,u16 y,u32 num,u8 len,u8 size)
{
      u8 t,temp;
      u8 enshow=0;
      for(t=0;t<len;t++)
      {
            temp=(num/mypow(10,len-t-1))%10;
            if(enshow==0&&t<(len-1))
            {
                     if(temp==0)
                     {
                              LCD_ShowChar(x+(size/2)*t,y,' ',size,0);
                              continue;
                     }else enshow=1;

            }
               LCD_ShowChar(x+(size/2)*t,y,temp+'0',size,0);
      }
}
//************************************************************
void LCD_Show2Num(u16 x,u16 y,u16 num,u8 len,u8 size,u8 mode)
{
      u8 t,temp;
      for(t=0;t<len;t++)
      {
            temp=(num/mypow(10,len-t-1))%10;
               LCD_ShowChar(x+(size/2)*t,y,temp+'0',size,mode);
      }
}

//显示字符串
void LCD_ShowString(u16 x,u16 y,const u8 *p)
{
while(*p!='')
{
      if(x>MAX_CHAR_POSX){x=0;y+=16;}
      if(y>MAX_CHAR_POSY){y=x=0;LCD_Clear(WHITE);}
      LCD_ShowChar(x,y,*p,16,0);
      x+=8;
      p++;
}
}

//**********************************************************
void DelayLcd(uint32_t nCount)
{
  for(; nCount != 0; nCount--);
}
//****************************************************************
void LCD_Reset(void)
{

GPIO_SetBits(GPIOC, GPIO_Pin_5 );
Delay_8ms;
GPIO_ResetBits(GPIOC, GPIO_Pin_5 );
Delay_375ms;
GPIO_SetBits(GPIOC, GPIO_Pin_5 );
DelayLcd(0xFFF);
}

void Lcd_Init(void)
{
      GPIO_InitTypeDef GPIO_InitStructure;       //GPIO
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(GPIOA, &GPIO_InitStructure);
      LCD_Reset();
      Delay_375ms();
  //***************************************************
      LCD_WR_REG(0xCF);
      LCD_WR_DATA (0x00);
      LCD_WR_DATA (0x81);
      LCD_WR_DATA (0X30);
      LCD_WR_REG(0xED);
      LCD_WR_DATA (0x64);
      LCD_WR_DATA (0x03);
      LCD_WR_DATA (0X12);
      LCD_WR_DATA (0X81);
      LCD_WR_REG(0xE8);
      LCD_WR_DATA (0x85);
      LCD_WR_DATA (0x00);
      LCD_WR_DATA (0x79);
      LCD_WR_REG(0xCB);
      LCD_WR_DATA (0x39);
      LCD_WR_DATA (0x2C);
      LCD_WR_DATA (0x00);
      LCD_WR_DATA (0x34);
      LCD_WR_DATA (0x02);
      LCD_WR_REG(0xF7);
      LCD_WR_DATA (0x20);
      LCD_WR_REG(0xEA);
      LCD_WR_DATA (0x00);
      LCD_WR_DATA (0x00);
      LCD_WR_REG(0xC0); //Power control
      LCD_WR_DATA (0x1D); //VRH[5:0]
      LCD_WR_REG(0xC1); //Power control
      LCD_WR_DATA (0x12); //SAP[2:0];BT[3:0]
      LCD_WR_REG(0xC5); //VCM control
      LCD_WR_DATA (0x30);
      LCD_WR_DATA (0x3F);
      LCD_WR_REG(0xC7); //VCM control
      LCD_WR_DATA (0x9E);
      LCD_WR_REG(0x3A); // Memory Access Control
      LCD_WR_DATA (0x55);
      LCD_WR_REG(0x36); // Memory Access Control
      LCD_WR_DATA (0x08);
      LCD_WR_REG(0xB1);
      LCD_WR_DATA (0x00);
      LCD_WR_DATA (0x17);
      LCD_WR_REG(0xB6); // Display Function Control
      LCD_WR_DATA (0x0A);
      LCD_WR_DATA (0xA2);
      LCD_WR_REG(0xF2); // 3Gamma Function Disable
      LCD_WR_DATA (0x00);
      LCD_WR_REG(0x26); //Gamma curve selected
      LCD_WR_DATA (0x01);
      LCD_WR_REG(0xE0); //Set Gamma
      LCD_WR_DATA (0x0F);
      LCD_WR_DATA (0x22);
      LCD_WR_DATA (0x1C);
      LCD_WR_DATA (0x1B);
      LCD_WR_DATA (0x08);
      LCD_WR_DATA (0x0F);
      LCD_WR_DATA (0x48);
      LCD_WR_DATA (0xB8);
      LCD_WR_DATA (0x34);
      LCD_WR_DATA (0x05);
      LCD_WR_DATA (0x0C);
      LCD_WR_DATA (0x09);
      LCD_WR_DATA (0x0F);
      LCD_WR_DATA (0x07);
      LCD_WR_DATA (0x00);
      LCD_WR_REG(0XE1); //Set Gamma
      LCD_WR_DATA (0x00);
      LCD_WR_DATA (0x23);
      LCD_WR_DATA (0x24);
      LCD_WR_DATA (0x07);
      LCD_WR_DATA (0x10);
      LCD_WR_DATA (0x07);
      LCD_WR_DATA (0x38);
      LCD_WR_DATA (0x47);
      LCD_WR_DATA (0x4B);
      LCD_WR_DATA (0x0A);
      LCD_WR_DATA (0x13);
      LCD_WR_DATA (0x06);
      LCD_WR_DATA (0x30);
      LCD_WR_DATA (0x38);
      LCD_WR_DATA (0x0F);

      LCD_WR_REG(0x2B);
            LCD_WR_DATA(0x00);
            LCD_WR_DATA(0x00);
            LCD_WR_DATA(0x01);
            LCD_WR_DATA(0x3f);


            LCD_WR_REG(0x2A);
            LCD_WR_DATA(0x00);
            LCD_WR_DATA(0x00);
            LCD_WR_DATA(0x00);
            LCD_WR_DATA(0xef);

            LCD_WR_REG(0x11);    //Exit Sleep
            Delay_375ms();
            LCD_WR_REG(0x29);    //Display on



            //LCD_LED=1;
            LCD_Clear(BLACK);


}
//****************************  写RAM*************************************
void LCD_WriteRAM(u16 RGB_Code)
{
      LCD_WR_DATA(RGB_Code);
}
u16 LCD_BGR2RGB(u16 c)
{
      u16  r,g,b,rgb;
      b=(c>>0)&0x1f;
      g=(c>>5)&0x3f;
      r=(c>>11)&0x1f;
      rgb=(b<<11)+(g<<5)+(r<<0);
      return(rgb);
}
//*************************************************************************************************

//*****************************************************************
void LCDOpenWindows(u16 x, u16 y, u16 Xend,u16 Yend)
{

      LCD_WR_REG(0x2A);
      LCD_WR_DATA(x >> 8);
      LCD_WR_DATA(x & 0xff);
      LCD_WR_DATA(Xend >> 8);
      LCD_WR_DATA(Xend & 0xff);

      LCD_WR_REG(0x2B);
      LCD_WR_DATA(y >> 8);
      LCD_WR_DATA(y & 0xff);
      LCD_WR_DATA(Yend >> 8);
      LCD_WR_DATA(Yend & 0xff);
}

/****************************************************************************
* 名称：void LCD_DrawPicture(u16 StartX,u16 StartY,u16 EndX,u16 EndY,const unsigned char *pic)
* 功能：在指定座标范围显示一副图片
* 入口参数：StartX    行起始座标
*          StartY    列起始座标
*          EndX    行结束座标
*          EndY    列结束座标
         pic          图片头指针
* 出口参数：无
* 说明：图片取模格式为水平扫描，16位颜 {MOD}模式
* 调用方法：LCD_DrawPicture(0,0,100,100,(u16*)demo);
****************************************************************************/
void LCD_DrawPicture(u16 StartX,u16 StartY,u16 Xend,u16 Yend,const unsigned char *pic)
{

u16 i=0;

LCDOpenWindows(StartX,StartY,Xend,Yend);
LCD_SetCursor(StartX,StartY);
LCD_WriteRAM_Prepare();
for (i=0;i<(Xend*Yend);i++)
  {

LCD_WriteRAM(*pic++);
  }
}

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2条回答

正点原子

2019-10-15 07:58

帮不到你，你这就一堆代码，慢慢自己啃手册了。

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