lcd.c

MCS-51的一个Free小型操作系统,在KeilC中下编译工作

          /* Display 16bits LSB */
          var_ptr = var_ptr -1;
          var = *var_ptr;
          var_ptr = var_ptr +4;
          c1 = LCD_HexToAsciiHigh(var);
          LCD_DisplayChar(RefPage, RefColumn, c1, TextMode);
          RefColumn+=7;
          c1 = LCD_HexToAsciiLow(var);
          LCD_DisplayChar(RefPage, RefColumn, c1, TextMode);
          RefColumn+=7;
          var_ptr = var_ptr -5;
          var = *var_ptr;
          var_ptr = var_ptr +4;
          c1 = LCD_HexToAsciiHigh(var);
          LCD_DisplayChar(RefPage, RefColumn, c1, TextMode);
          RefColumn+=7;
          c1 = LCD_HexToAsciiLow(var);
          LCD_DisplayChar(RefPage, RefColumn, c1, TextMode);
          RefColumn+=7;
        }
        else
        {
          /* Display '%' character which is followed by (d, x or w) */
          ptr--;
          c1 = *ptr;
          LCD_DisplayChar(RefPage, RefColumn, c1, TextMode);
          RefColumn+=7;
          ptr++;
          i++;
          if(i==17)
          {
            /* Add missed columns */
            LCD_DisplayChar(RefPage, RefColumn-1, 0x1f, TextMode);
            RefColumn = 0;
            RefPage+=2;
          }
        }
      }
      else
      {	
        /* Display characters different from (\r, \n, %) */ 			
        LCD_DisplayChar(RefPage, RefColumn, c1, TextMode);
        RefColumn+=7;
        ptr++;
        i++;
        if(i==17)
        {
          /* Add missed columns */
          LCD_DisplayChar(RefPage, RefColumn-1, 0x1f, TextMode);
          LCD_ClearLine(Line2);
          RefColumn = 0;
          RefPage+=2;
        }
      }
    }
  }
  /* Display spaces if string doesn't reach the max LCD characters size */
  while(RefColumn<119)
  {
    /* Display Spaces */
    LCD_DisplayChar(RefPage, RefColumn, 0x20, TextMode);
    RefColumn+=7;
    /* Add missed columns */
    LCD_DisplayChar(RefPage, RefColumn, 0x1f, TextMode);
  }
}

/*******************************************************************************
* Function Name  : LCD_DrawMasterGraphic
* Description    : Draw a Graphic image on master LCD.
* Input          : - Bmp: the pointer of the dot matrix data.
* Output         : None
* Return         : None.
*******************************************************************************/
void LCD_DrawMasterGraphic(u8 *Bmp)
{
  u8 j = 0, k = 0, ActPage = 0;

  /* Draw graphic on master: 61 Column *4 Pages */
  while(j<244)
  {
    /* Draw on master page by page */
    LCD_SetMasterPage(ActPage);
    for(k=0; k<61; k++)
    {
      LCD_SetMasterColumn(k);
      LCD_SendMasterData(*Bmp++);
      j++;
    }
    ActPage++;
  }
}

/*******************************************************************************
* Function Name  : LCD_DrawSlaveGraphic
* Description    : Draw a Graphic image on slave LCD.
* Input          : - Bmp: the pointer of the dot matrix data.
* Output         : None
* Return         : None.
*******************************************************************************/
void LCD_DrawSlaveGraphic(u8 *Bmp)
{
  u8 j = 0, k = 0, ActPage = 0;

  /* Draw graphic on slave: 61 Column *4 Pages */
  while(j<244)
  {
    /* Draw on slave page by page */
    LCD_SetSlavePage(ActPage);
    for(k=0; k<61; k++)
    {
      LCD_SetSlaveColumn(k);
      LCD_SendSlaveData(*Bmp++);
      j++;
    }
    ActPage++;
  }
}

/*******************************************************************************
* Function Name  : LCD_DrawGraphic
* Description    : Draw a Graphic image on LCD.
* Input          : - Bmp: the pointer of the dot matrix data.
* Output         : None
* Return         : None.
*******************************************************************************/
void LCD_DrawGraphic(u8 *Bmp)
{
  u8 Pos = 0, ActPage = 0;
  u16 j = 0, k = 0;

  /* Draw graphic on LCD: 122 Column *4 Pages */
  while(j<488)
  {
    if(!Pos)
    {
      /* Draw on master page by page */
      LCD_SetMasterPage(ActPage);
      for(k=0; k<61; k++)
      {
        LCD_SetMasterColumn(k);
        LCD_SendMasterData(*Bmp++);
        j++;
      }
      Pos=1;
    }
    else
    {
      /* Draw on slave page by page */
      LCD_SetSlavePage(ActPage);
      for(k=0; k<61; k++)
      {
        LCD_SetSlaveColumn(k);
        LCD_SendSlaveData(*Bmp++);
        j++;
      }
      ActPage++;
      Pos=0;
    }
  }
}

/*******************************************************************************
* Function Name  : LCD_ScrollGraphic
* Description    : Scroll a Graphic image on LCD.
* Input          : - Bmp: the pointer of the dot matrix data.
*                  - nCount: specifies the delay time length.
* Output         : None
* Return         : None.
*******************************************************************************/
void LCD_ScrollGraphic(u8 *Bmp, u32 nCount)
{
  u8 Pos = 0, ActPage = 0;
  u16 j = 0, k = 0;
  u32 Counter = 0;

  /* Draw graphic on LCD: 122 Column *4 Pages */
  while(j<488)
  {
    if(!Pos)
    {
      /* Draw on master page by page */
      LCD_SetMasterPage(ActPage);
      for(k=0; k<61; k++)
      {
        LCD_SetMasterColumn(k);
        LCD_SendMasterData(*Bmp++);
        Counter = nCount;
        /* Set a delay */
        for(; Counter != 0; Counter--);
        j++;
      }
      Pos=1;
    }
    else
    {
      /* Draw on slave page by page */
      LCD_SetSlavePage(ActPage);
      for(k=0; k<61; k++)
      {
        LCD_SetSlaveColumn(k);
        Counter = nCount;
        /* Set a delay */
        for(; Counter != 0; Counter--);
        LCD_SendSlaveData(*Bmp++);
        j++;
      }
      ActPage++;
      Pos=0;
    }
  }
}

/*******************************************************************************
* Function Name  : LCD_DrawPixel
* Description    : Draw a Graphic image on slave LCD.
* Input          : - XPos: the dot line number of the pixel.
*                      - 1->61 : displayed on master LCD
*                      - 62->122: displayed on slave LCD
*                  - YPos: column address of the pixel from 1->32.
*                  - Mode: Dot_On: Pixel turned on (black).
*                          Dot_Off: Pixel turned off (black).
* Output         : None
* Return         : None.
*******************************************************************************/
void LCD_DrawPixel(u8 XPos, u8 YPos, DotMode_TypeDef Mode)
{
  u8 Page = 0, Position = 0;
  u16 Mask = 0;
  u32 MasterDataIn = 0, MasterDataOut = 0, SlaveDataIn = 0, SlaveDataOut = 0;

  /* Pixel page */
  Page = (XPos-1)/8;
  /* Pixel column  */
  Position = (YPos-1)/61; /* 0:Master, 1:Slave */
  /* Mask for the pixel */
  Mask= 1<<((XPos-1)%8);
  /* If Position=0 draw pixel on master LCD */
  if(!Position)
  {
    LCD_SetMasterPage(Page);
    LCD_SetMasterColumn(YPos-1);
    MasterDataIn = LCD_ReadMasterData();
    MasterDataIn = LCD_ReadMasterData();
    LCD_SetMasterColumn(YPos-1);
    if(Mode==Dot_On)
    {
      MasterDataOut = MasterDataIn | Mask;
    }
    else
    {
      MasterDataOut = MasterDataIn & (~Mask);
    }
    LCD_SendMasterData(MasterDataOut);
  }
  /* If Position=1 draw pixel on slave LCD */
  else
  {
    LCD_SetSlavePage(Page);
    LCD_SetSlaveColumn(YPos-62);
    SlaveDataIn = LCD_ReadSlaveData();
    SlaveDataIn = LCD_ReadSlaveData();
    LCD_SetSlaveColumn(YPos-62);
    if(Mode==Dot_On)
    {
      SlaveDataOut = SlaveDataIn | Mask;
    }
    else
    {
      SlaveDataOut = SlaveDataIn & (~Mask);
    }
    LCD_SendSlaveData(SlaveDataOut);
  }
}

/*******************************************************************************
* Function Name  : LCD_DrawLine
* Description    : Draw a line on master and slave LCDs.
* Input          : - XPos1: the dot line number of the source point .
*                  - XPos2: the dot line number of the destination point .
*                  - YPos1: the dot column number of the source point.
*                  - YPos2: the dot column number of the destination point.
* Output         : None
* Return         : None.
*******************************************************************************/
void LCD_DrawLine(u8 XPos1, u8 YPos1, u8 XPos2, u8 YPos2)
{
  u8 XPos = 0, YPos = 0;

  /* Use XPos1, YPos1, XPos2 and YPos2 */
  if((XPos2>=XPos1)&(YPos2>=YPos1))
  {
    for(XPos=XPos1; XPos<=XPos2; XPos++)
    {
      for(YPos=YPos1; YPos<=YPos2; YPos++)
      {
        LCD_DrawPixel(XPos, YPos, Dot_On);
      }
    }
  }
  else if((XPos2<XPos1)&(YPos2>=YPos1))
  {
    for(XPos=XPos2; XPos<=XPos1; XPos++)
    {
      for(YPos=YPos1; YPos<=YPos2; YPos++)
      {
        LCD_DrawPixel(XPos, YPos, Dot_On);
      }
    }
  }
  else if((XPos2>=XPos1)&(YPos2<YPos1))
  {
    for(XPos=XPos1; XPos<=XPos2; XPos++)
    {
      for(YPos=YPos2; YPos<=YPos1; YPos++)
      {
        LCD_DrawPixel(XPos, YPos, Dot_On);
      }
    }
  }
  else /*if((XPos2<XPos1)&(YPos2<YPos1))*/
  {
    for(XPos=XPos2; XPos<=XPos1; XPos++)
    {
      for(YPos=YPos2; YPos<=YPos1; YPos++)
      {
        LCD_DrawPixel(XPos, YPos, Dot_On);
      }
    }
  }
}

/*******************************************************************************
* Function Name  : LCD_DrawBox
* Description    : Draw a Box on master and slave LCDs.
* Input          : - XPos: the dot line number of the source point .
*                  - YPos: the dot column number of the source point.
*                  - Dx: Box large.
*                  - Dy: Box width.
* Output         : None
* Return         : None.
*******************************************************************************/
void LCD_DrawBox(u8 XPos, u8 YPos, u8 Dx, u8 Dy)
{
  /* Use XPos, YPos, Dx and Dy */
  LCD_DrawLine(XPos, YPos, XPos, YPos+Dy);
  LCD_DrawLine(XPos, YPos, XPos+Dx, YPos);
  LCD_DrawLine(XPos+Dx, YPos, XPos+Dx, YPos+Dy);
  LCD_DrawLine(XPos, YPos+Dy, XPos+Dx, YPos+Dy);
}

/******************* (C) COPYRIGHT 2006 STMicroelectronics *****END OF FILE******/