單片機+OLED12864 IIC畫豎線花屏問題

ID:884042 · 發(fā)表于 2021-3-22 20:15

我想用OLED來畫出豎橫斜線。
現(xiàn)在畫點函數(shù)已經(jīng)做好了，畫橫豎線就容易了。
單片機源程序如下:

sbit SCL=P1^4; //串行時鐘
sbit SDA=P1^3; //串行數(shù)據(jù)

#define high 1
#define low 0

#define       Brightness       0xCF
#define X_WIDTH       128
#define Y_WIDTH       64
/*********************OLED驅(qū)動程序用的延時程序************************************/
void delay(unsigned int z)
{
      unsigned int x,y;
      for(x=z;x>0;x--)
            for(y=110;y>0;y--);
}

/**********************************************
//IIC Start
**********************************************/
void IIC_Start()
{
SCL = high;
SDA = high;
SDA = low;
SCL = low;
}

/**********************************************
//IIC Stop
**********************************************/
void IIC_Stop()
{
SCL = low;
SDA = low;
SCL = high;
SDA = high;
}

/**********************************************
// 通過I2C總線寫一個字節(jié)
**********************************************/
void Write_IIC_Byte(unsigned char IIC_Byte)
{
      unsigned char i;
      for(i=0;i<8;i++)
      {
            if(IIC_Byte & 0x80)
                     SDA=high;
            else
                     SDA=low;
            SCL=high;
            SCL=low;
            IIC_Byte<<=1;
      }
      SDA=1;
      SCL=1;
      SCL=0;
}

/*********************OLED寫數(shù)據(jù)************************************/
void OLED_WrDat(unsigned char IIC_Data)
{
      IIC_Start();
      Write_IIC_Byte(0x78);
      Write_IIC_Byte(0x40);                      //write data
      Write_IIC_Byte(IIC_Data);
      IIC_Stop();
}
/*********************OLED寫命令************************************/
void OLED_WrCmd(unsigned char IIC_Command)
{
      IIC_Start();
      Write_IIC_Byte(0x78);          //Slave address,SA0=0
      Write_IIC_Byte(0x00);                      //write command
      Write_IIC_Byte(IIC_Command);
      IIC_Stop();
}
/*********************OLED 設(shè)置坐標************************************/
void OLED_Set_Pos(unsigned char x, unsigned char y)
{
      OLED_WrCmd(0xb0+y);
      OLED_WrCmd(((x&0xf0)>>4)|0x10);
      OLED_WrCmd((x&0x0f)|0x01);
}
/*********************OLED全屏************************************/
void OLED_Fill(unsigned char bmp_dat)
{
      unsigned char y,x;
      for(y=0;y<8;y++)
      {
            OLED_WrCmd(0xb0+y);
            OLED_WrCmd(0x01);
            OLED_WrCmd(0x10);
            for(x=0;x<X_WIDTH;x++)
            OLED_WrDat(bmp_dat);
      }
}
/*********************OLED復位************************************/
void OLED_CLS(void)
{
      unsigned char y,x;
      for(y=0;y<8;y++)
      {
            OLED_WrCmd(0xb0+y);
            OLED_WrCmd(0x01);
            OLED_WrCmd(0x10);
            for(x=0;x<X_WIDTH;x++)
            OLED_WrDat(0);
      }
}
/*********************OLED初始化************************************/
void OLED_Init(void)
{
      delay(500);//初始化之前的延時很重要！
      OLED_WrCmd(0xae);//--turn off oled panel
      OLED_WrCmd(0x00);//---set low column address
      OLED_WrCmd(0x10);//---set high column address
      OLED_WrCmd(0x40);//--set start line address  Set Mapping RAM Display Start Line (0x00~0x3F)
      OLED_WrCmd(0x81);//--set contrast control register
      OLED_WrCmd(Brightness); // Set SEG Output Current Brightness
      OLED_WrCmd(0xa1);//--Set SEG/Column Mapping    0xa0左右反置 0xa1正常
      OLED_WrCmd(0xc8);//Set COM/Row Scan Direction 0xc0上下反置 0xc8正常
      OLED_WrCmd(0xa6);//--set normal display
      OLED_WrCmd(0xa8);//--set multiplex ratio(1 to 64)
      OLED_WrCmd(0x3f);//--1/64 duty
      OLED_WrCmd(0xd3);//-set display offset       Shift Mapping RAM Counter (0x00~0x3F)
      OLED_WrCmd(0x00);//-not offset
      OLED_WrCmd(0xd5);//--set display clock divide ratio/oscillator frequency
      OLED_WrCmd(0x80);//--set divide ratio, Set Clock as 100 Frames/Sec
      OLED_WrCmd(0xd9);//--set pre-charge period
      OLED_WrCmd(0xf1);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
      OLED_WrCmd(0xda);//--set com pins hardware configuration
      OLED_WrCmd(0x12);
      OLED_WrCmd(0xdb);//--set vcomh
      OLED_WrCmd(0x40);//Set VCOM Deselect Level
      OLED_WrCmd(0x20);//-Set Page Addressing Mode (0x00/0x01/0x02)
      OLED_WrCmd(0x02);//
      OLED_WrCmd(0x8d);//--set Charge Pump enable/disable
      OLED_WrCmd(0x14);//--set(0x10) disable
      OLED_WrCmd(0xa4);// Disable Entire Display On (0xa4/0xa5)
      OLED_WrCmd(0xa6);// Disable Inverse Display On (0xa6/a7)
      OLED_WrCmd(0xaf);//--turn on oled panel
      OLED_Fill(0x00); //初始清屏
      OLED_Set_Pos(0,0);
}
/***************功能描述：顯示6*8一組標準ASCII字符串       顯示的坐標（x,y），y為頁范圍0～7****************/
void OLED_P6x8Str(unsigned char x, y,unsigned char ch[])
{
      unsigned char c=0,i=0,j=0;
      while (ch[j]!='\0')
      {
            c =ch[j]-32;
            if(x>126){x=0;y++;}
            OLED_Set_Pos(x,y);
            for(i=0;i<6;i++)
            OLED_WrDat(F6x8[c][ i]);
            x+=6;
            j++;
      }
}
/*******************功能描述：顯示8*16一組標準ASCII字符串       顯示的坐標（x,y），y為頁范圍0～7****************/
void OLED_P8x16Str(unsigned char x, y,unsigned char ch[])
{
      unsigned char c=0,i=0,j=0;
      while (ch[j]!='\0')
      {
            c =ch[j]-32;
            if(x>120){x=0;y++;}
            OLED_Set_Pos(x,y);
            for(i=0;i<8;i++)
            OLED_WrDat(F8X16[c*16+i]);
            OLED_Set_Pos(x,y+1);
            for(i=0;i<8;i++)
            OLED_WrDat(F8X16[c*16+i+8]);
            x+=8;
            j++;
      }
}
/*****************功能描述：顯示16*16點陣  顯示的坐標（x,y），y為頁范圍0～7****************************/
void OLED_P16x16Ch(unsigned char x, y, N)
{
      unsigned char wm=0;
      unsigned int adder=32*N;
      OLED_Set_Pos(x , y);
      for(wm = 0;wm < 16;wm++)
      {
            OLED_WrDat(F16x16[adder]);
            adder += 1;
      }
      OLED_Set_Pos(x,y + 1);
      for(wm = 0;wm < 16;wm++)
      {
            OLED_WrDat(F16x16[adder]);
            adder += 1;
      }
}
/***********功能描述：顯示顯示BMP圖片128×64起始點坐標(x,y),x的范圍0～127，y為頁的范圍0～7*****************/
void Draw_BMP(unsigned char x0, y0,x1, y1,unsigned char BMP[])
{
      unsigned int j=0;
      unsigned char x,y;

  if(y1%8==0) y=y1/8;
  else y=y1/8+1;
      for(y=y0;y<y1;y++)
      {
            OLED_Set_Pos(x0,y);
for(x=x0;x<x1;x++)
         {
                  OLED_WrDat(BMP[j++]);
         }
      }
}
void OLED_Point(unsigned char x, y)
{
      switch(y)
      {
            case(0):OLED_Set_Pos(x,0);OLED_WrDat(0x01);break;
            case(1):OLED_Set_Pos(x,0);OLED_WrDat(0x02);break;
            case(2):OLED_Set_Pos(x,0);OLED_WrDat(0x04);break;
            case(3):OLED_Set_Pos(x,0);OLED_WrDat(0x08);break;
            case(4):OLED_Set_Pos(x,0);OLED_WrDat(0x10);break;
            case(5):OLED_Set_Pos(x,0);OLED_WrDat(0x20);break;
            case(6):OLED_Set_Pos(x,0);OLED_WrDat(0x40);break;
            case(7):OLED_Set_Pos(x,0);OLED_WrDat(0x80);break;
            case(8):OLED_Set_Pos(x,1);OLED_WrDat(0x01);break;
            case(9):OLED_Set_Pos(x,1);OLED_WrDat(0x02);break;
            case(10):OLED_Set_Pos(x,1);OLED_WrDat(0x04);break;
            case(11):OLED_Set_Pos(x,1);OLED_WrDat(0x08);break;
            case(12):OLED_Set_Pos(x,1);OLED_WrDat(0x10);break;
            case(13):OLED_Set_Pos(x,1);OLED_WrDat(0x20);break;
            case(14):OLED_Set_Pos(x,1);OLED_WrDat(0x40);break;
            case(15):OLED_Set_Pos(x,1);OLED_WrDat(0x80);break;
            case(16):OLED_Set_Pos(x,2);OLED_WrDat(0x01);break;
            case(17):OLED_Set_Pos(x,2);OLED_WrDat(0x02);break;
            case(18):OLED_Set_Pos(x,2);OLED_WrDat(0x04);break;
            case(19):OLED_Set_Pos(x,2);OLED_WrDat(0x08);break;
            case(20):OLED_Set_Pos(x,2);OLED_WrDat(0x10);break;
            case(21):OLED_Set_Pos(x,2);OLED_WrDat(0x20);break;
            case(22):OLED_Set_Pos(x,2);OLED_WrDat(0x40);break;
            case(23):OLED_Set_Pos(x,2);OLED_WrDat(0x80);break;
            case(24):OLED_Set_Pos(x,3);OLED_WrDat(0x01);break;
            case(25):OLED_Set_Pos(x,3);OLED_WrDat(0x02);break;
            case(26):OLED_Set_Pos(x,3);OLED_WrDat(0x04);break;
            case(27):OLED_Set_Pos(x,3);OLED_WrDat(0x08);break;
            case(28):OLED_Set_Pos(x,3);OLED_WrDat(0x10);break;
            case(29):OLED_Set_Pos(x,3);OLED_WrDat(0x20);break;
            case(30):OLED_Set_Pos(x,3);OLED_WrDat(0x40);break;
            case(31):OLED_Set_Pos(x,3);OLED_WrDat(0x80);break;
            case(32):OLED_Set_Pos(x,4);OLED_WrDat(0x01);break;
            case(33):OLED_Set_Pos(x,4);OLED_WrDat(0x02);break;
            case(34):OLED_Set_Pos(x,4);OLED_WrDat(0x04);break;
            case(35):OLED_Set_Pos(x,4);OLED_WrDat(0x08);break;
            case(36):OLED_Set_Pos(x,4);OLED_WrDat(0x10);break;
            case(37):OLED_Set_Pos(x,4);OLED_WrDat(0x20);break;
            case(38):OLED_Set_Pos(x,4);OLED_WrDat(0x40);break;
            case(39):OLED_Set_Pos(x,4);OLED_WrDat(0x80);break;
            case(40):OLED_Set_Pos(x,5);OLED_WrDat(0x01);break;
            case(41):OLED_Set_Pos(x,5);OLED_WrDat(0x02);break;
            case(42):OLED_Set_Pos(x,5);OLED_WrDat(0x04);break;
            case(43):OLED_Set_Pos(x,5);OLED_WrDat(0x08);break;
            case(44):OLED_Set_Pos(x,5);OLED_WrDat(0x10);break;
            case(45):OLED_Set_Pos(x,5);OLED_WrDat(0x20);break;
            case(46):OLED_Set_Pos(x,5);OLED_WrDat(0x40);break;
            case(47):OLED_Set_Pos(x,5);OLED_WrDat(0x80);break;
            case(48):OLED_Set_Pos(x,6);OLED_WrDat(0x01);break;
            case(49):OLED_Set_Pos(x,6);OLED_WrDat(0x02);break;
            case(50):OLED_Set_Pos(x,6);OLED_WrDat(0x04);break;
            case(51):OLED_Set_Pos(x,6);OLED_WrDat(0x08);break;
            case(52):OLED_Set_Pos(x,6);OLED_WrDat(0x10);break;
            case(53):OLED_Set_Pos(x,6);OLED_WrDat(0x20);break;
            case(54):OLED_Set_Pos(x,6);OLED_WrDat(0x40);break;
            case(55):OLED_Set_Pos(x,6);OLED_WrDat(0x80);break;
            case(56):OLED_Set_Pos(x,7);OLED_WrDat(0x01);break;
            case(57):OLED_Set_Pos(x,7);OLED_WrDat(0x02);break;
            case(58):OLED_Set_Pos(x,7);OLED_WrDat(0x04);break;
            case(59):OLED_Set_Pos(x,7);OLED_WrDat(0x08);break;
            case(60):OLED_Set_Pos(x,7);OLED_WrDat(0x10);break;
            case(61):OLED_Set_Pos(x,7);OLED_WrDat(0x20);break;
            case(62):OLED_Set_Pos(x,7);OLED_WrDat(0x40);break;
            case(63):OLED_Set_Pos(x,7);OLED_WrDat(0x80);break;
      }
}
void OLED_XLine(unsigned char x0, y0,x1)
{
unsigned char z;
      if(x0<=x1)
      {
            OLED_Point(x0, y0);
            for(z=x0;z<x1;z++)
         {
                  OLED_Point(z, y0);
         }
      }
      if(x0>=x1)
      {
            OLED_Point(x0, y0);
            for(z=x0;z<=x1;z--)       //z=16 z=0 z--
         {
                  OLED_Point(z, y0);
         }
      }
}

但不知道為什么，畫點函數(shù)有些地方就不能一起顯示（表達能力有限，可以自己試下）！
例如：

OLED_Point(0, 0);
OLED_Point(1, 1);

大家可以在自己的屏幕上試試看。
還有，畫豎線函數(shù)我編好后下載到屏幕上卻花屏。
源碼：

void OLED_YLine(unsigned char y0, x0,y1){ unsigned char z;       if(y0<=y1)       {             OLED_Point(x0, y0);             for(z=y0;z<y1;z++)          {                   OLED_Point(x0, z);          }       }       if(y0>=y1)       {             OLED_Point(x0, y0);             for(z=y0;z<=y1;z--)       //z=16 z=0 z--          {                   OLED_Point(x0, z);          }       }}復制代碼
現(xiàn)在求助各位大神，給我解釋以下這怎么回事，要怎么解決？

ID:884042 · 發(fā)表于 2021-5-5 13:34

因為你的OLED屏幕地址重復了，才會導致花屏

ID:927866 · 發(fā)表于 2021-6-23 14:22

LZ我問一下我的OLED也是花屏一道白一道黑的而且很有規(guī)律該顯示的圖案也有顯示這該怎么辦

ID:824490 · 發(fā)表于 2021-6-24 09:17

void OLED_Point(unsigned char x, y)
{
switch(y)...
這個函數(shù)這么有規(guī)律，就不好好想想把它優(yōu)化、簡化一下？

ID:884042 · 發(fā)表于 2021-8-16 18:21

名字不是重點發(fā)表于 2021-6-24 09:17
void OLED_Point(unsigned char x, y)
{
switch(y)...

兩個月了，終于有人回了··· ···
優(yōu)化不了，不信你試試？

ID:884042 · 發(fā)表于 2021-8-16 18:22

多多Cool 發(fā)表于 2021-6-23 14:22
LZ我問一下我的OLED也是花屏一道白一道黑的而且很有規(guī)律該顯示的圖案也有顯示這該怎么辦

你初始化里清屏了嗎？

ID:57657 · 發(fā)表于 2021-8-16 20:19

你可以在單片機內(nèi)建立幀顯存，128*64/8=1024字節(jié)數(shù)組，不管畫什么先操作顯存，畫完一整張圖，最后發(fā)送到OLED，而不是邊畫邊發(fā)送。

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單片機+OLED12864 IIC畫豎線花屏問題