lcd_hd44780.c

freescale最新的16位单片机

* Arguments         : tUC line = <0,LCD_LINES), tSC *string
* Special Issues    : String should have length 1 byte (for termination string
*                     character '\0') longer than LCD_COLUMNS.
*                     If definition LCD_NO_READ_FUNCTION exists the function is
*                     not accesible.
******************************************************************************/
#ifndef  LCD_NO_READ_FUNCTION
void LcdGetLineL(tUC line, tSC *str)
{
 tUC col;

 if(line>(LCD_LINES-1)) return;

 col=0;

 while(col<LCD_COLUMNS)
	{
	 *str=LcdGetCharLC(line,col);
	 str++;
	 col++;
	}
 *str='\0';
}
#endif
/******************************************************************************
* Module            : void LcdGetLineLC(tUC line,tUC col, tSC *str)
* Description       : Read text from position Line,Column till the end of
*                     the line and put it into string.
*                     Cursor position remains unchanged.
* Global Data       : none
* Static Global Data: none
* Returns           : none
* Arguments         : tUC line   = <0,LCD_LINES),
                      tUC column = <0,LCD_COLUMNS),
                      tSC *string
* Special Issues    : String should have length 1 byte (for termination string
*                     character '\0') longer than LCD_COLUMNS.
*                     If definition LCD_NO_READ_FUNCTION exists the function is
*                     not accesible.
******************************************************************************/
#ifndef  LCD_NO_READ_FUNCTION
void LcdGetLineLC(tUC line,tUC col, tSC *str)
{
 if(line>(LCD_LINES-1))   return;
 if(col >(LCD_COLUMNS-1)) return;

 while(col<LCD_COLUMNS)
	{
	 *str=LcdGetCharLC(line,col);
	 str++;
	 col++;
	}
 *str='\0';
}
#endif
/******************************************************************************
* Module            : void LcdGetLineLCn(tUC line,tUC col,tUC n, tSC *str)
* Description       : Read text from position Line,
*                     Column till the end of the line or n character were read
*                     and put it into string.
*                     Cursor position remains unchanged.
* Global Data       : none
* Static Global Data: none
* Returns           : none
* Arguments         : tUC line = <0,LCD_LINES),
*                     tUC column = <0,LCD_COLUMNS),
*                     tUC number of characters,
*                     tSC *string
* Special Issues    : String should have length 1 byte (for termination string
*                     character '\0') longer than LCD_COLUMNS.
*                     If definition LCD_NO_READ_FUNCTION exists the function is
*                     not accesible.
******************************************************************************/
#ifndef  LCD_NO_READ_FUNCTION
void LcdGetLineLCn(tUC line,tUC col,tUC n, tSC *str)
{
 tUC i;

 if(line>(LCD_LINES-1))   return;
 if(col >(LCD_COLUMNS-1)) return;

 i=0;

 while(col<LCD_COLUMNS && i<n)
	{
	 *str=LcdGetCharLC(line,col);
	 str++;
	 col++;
	 i++;
	}
 *str='\0';
}
#endif
/******************************************************************************
* Module            : void LcdGetWordLC(tUC line,tUC col, tSC *str)
* Description       : Read text but one word only from position xy
*                     Cursor position remains unchanged.
* Global Data       : none
* Static Global Data: none
* Returns           : none
* Arguments         : tUC line = <0,LCD_LINES),
*                     tUC column = <0,LCD_COLUMNS),
*                     tSC *string
* Special Issues    : String should have length 1 byte (for termination string
*                     character '\0') longer than LCD_COLUMNS.
*                     If definition LCD_NO_READ_FUNCTION exists the function is
*                     not accesible.
******************************************************************************/
#ifndef  LCD_NO_READ_FUNCTION
void LcdGetWordLC(tUC line,tUC col, tSC *str)
{
 tUC chr;
 if(line>(LCD_LINES-1))   return;
 if(col >(LCD_COLUMNS-1)) return;

 while(col<LCD_COLUMNS)
	{
	 chr=LcdGetCharLC(line,col);
	 if(chr==' ') col=LCD_COLUMNS;
	 else
      {
         *str=chr;
         str++;
         col++;
      }
	}
 *str='\0';
}
#endif
/******************************************************************************
* Module            : void LcdOutText(tSC *str)
* Description       : Write string to current position. String must be finished
*                     by '\0'. Maximal LCD_COLUMNS characters is written.
*                     Autoincrement setup has influence.
*                     Cursor will be placed behind the last written character.
*                     It doesn't check end of line.
* Global Data       : none
* Static Global Data: none
* Returns           : none
* Arguments         : tSC *string
* Special Issues    : none
******************************************************************************/
void LcdOutText(tSC *str)
{
 while(*str != '\0')
	{
	 LcdWriteChar(*str);
	 str++;
	}
 LcdGetLineCol();
}
/******************************************************************************
* Module            : void LcdOutTextL(tUC line, tSC *str)
* Description       : Write string to line x. String must be finished by '\0'.
*                     Maximal LCD_COLUMNS characters is written.
*                     Autoincrement setup has no influence.
*                     Cursor will be placed behind the last written character
*                     or at the end of the line if string overlaps line
* Global Data       : none
* Static Global Data: none
* Returns           : none
* Arguments         : tUC line = <0,LCD_LINES), tSC *string
* Special Issues    : none
* Special Issues    : none
******************************************************************************/
void LcdOutTextL(tUC line, tSC *str)
{
 tUC col;
 if(line>(LCD_LINES-1))   return;

 col=0;

 while(*str != '\0' && col<LCD_COLUMNS)
	{
	 LcdSetPos(line,col);
	 LcdWriteChar(*str);
	 str++;
	 col++;
	}
 if(col == LCD_COLUMNS) col--;
 LcdSetPos(line,col);
}
/******************************************************************************
* Module            : void LcdOutTextLC(tUC line,tUC col, tSC *str)
* Description       : Write string to position Line,column. 
*                     String must be finished by '\0'. String is written to
*                     display till the end of the line or '\0' is reached.
*                     Autoincrement setup has no influence.
*                     Cursor will be placed behind the last written character
*                     or at the end of the line if string overlaps line
* Global Data       : none
* Static Global Data: none
* Returns           : none
* Arguments         : tUC line = <0,LCD_LINES),
*                     tUC column = <0,LCD_COLUMNS),
*                     tSC *string
* Special Issues    : none
******************************************************************************/
void LcdOutTextLC(tUC line,tUC col, tSC *str)
{
 if(line>(LCD_LINES-1))   return;
 if(col >(LCD_COLUMNS-1)) return;

 while(*str != '\0' && col<LCD_COLUMNS)
	{
	 LcdSetPos(line,col);
	 LcdWriteChar(*str);
	 str++;
	 col++;
	}
 if(col == LCD_COLUMNS) col--;
 LcdSetPos(line,col);
}
/******************************************************************************
* Module            : void LcdOutTextLCn(tUC line,tUC col,tUC n,tSC *str)
* Description       : Write string to position Line,Column. 
*                     String must be finished by '\0'.
*                     String is written to display till given number of
*                     characters or the end of the line or '\0' is reached.
*                     Autoincrement setup has no influence.
*                     Cursor will be placed behind the last written character
*                     or at the end of the line if string overlaps line
* Global Data       : none
* Static Global Data: none
* Returns           : none
* Arguments         : tUC line = <0,LCD_LINES),
*                     tUC column = <0,LCD_COLUMNS),
*                     tUC number of characters,
*                     tSC *string
* Special Issues    : none
******************************************************************************/
void LcdOutTextLCn(tUC line,tUC col,tUC n,tSC *str)
{
 tUC i;

 if(line>(LCD_LINES-1))   return;
 if(col >(LCD_COLUMNS-1)) return;

 i=0;

 while(*str != '\0' && col<LCD_COLUMNS && i<n)
	{
	 LcdSetPos(line,col);
	 LcdWriteChar(*str);
	 str++;
	 col++;
	 i++;
	}
 if(col == LCD_COLUMNS) col--;
 LcdSetPos(line,col);
}

/******************************************************************************
* Module            : void LcdRollUp(void)
* Description       : Roll display up and set first position on the last line.
* Global Data       : none
* Static Global Data: none
* Returns           : none
* Arguments         : none
* Special Issues    : If definition LCD_NO_READ_FUNCTION exists the function is
*                     not accesible.
******************************************************************************/
#ifndef  LCD_NO_READ_FUNCTION
void LcdRollUp(void)
{
   tSC line,col;
   for(line=1;line<LCD_LINES;line++)
      {   
         for(col=0;col<LCD_COLUMNS;col++)
            {
              LcdWriteCharLC(line-1,col,LcdGetCharLC(line,col));
            }       
      } 
 LcdClearLine(LCD_LINES-1);
}
#endif
/******************************************************************************
* Module            : void LcdRollDown(void)
* Description       : Roll display down and set first posit. on the first line.
* Global Data       : none
* Static Global Data: none
* Returns           : none
* Arguments         : none
* Special Issues    : none
* Special Issues    : If definition LCD_NO_READ_FUNCTION exists the function is
*                     not accesible.
******************************************************************************/
#ifndef  LCD_NO_READ_FUNCTION
void LcdRollDown(void)
{
   tSC line,col;
   for(line=LCD_LINES-2;line>=0;line--)
      {   
         for(col=0;col<LCD_COLUMNS;col++)
            {
              LcdWriteCharLC(line+1,col,LcdGetCharLC(line,col));
            }       
      } 
 LcdClearLine(0);
}
#endif
/******************************************************************************
* Module            : static void LcdClock(void)
* Description       : flip/flop E.
* Global Data       : none
* Static Global Data: none
* Returns           : none
* Arguments         : none
* Special Issues    : none
******************************************************************************/
static void LcdClock(void)
{
 
 LCD_E=LCD_TRUE;
 LcdDelay1us();                                          
 LCD_E=LCD_FALSE;
 LcdDelay1us();                                          
}
/******************************************************************************
* Module            : static void LcdPutNumberOnIIC(tUC data)
* Description       : Put data on IIC data port
* Global Data       : none
* Static Global Data: none
* Returns           : none
* Arguments         : tUC data,
* Special Issues    : none
* Special Issues    : none
******************************************************************************/
#ifdef IIC_LCD_TRANSMIT
static void LcdPutNumberOnIIC(tUC data)
{
unsigned char fault=0;
LcdSetUpIIC();                            /*setup IIC*/
  
  IIC(IIC_STATUS, STATUS_CLEAR);          /*Clear data send flag, IBIF = 1*/

  IIC(IIC_CONDITION,IIC_START);
  IIC(IIC_CONDITION,IIC_STOP);
  IIC(IIC_CONDITION,IIC_START);
  
  IIC(IIC_STATUS, STATUS_CLEAR);
  IIC(IIC_DATA_SEND,IIC_SLAVE_ADRESS);		/*Send adress*/
  
  while(IIC_STATUS==0){                   /*wait for transfer complete flag, ACK flag*/
      fault++;
        if (fault ==100) return;
  }
  while(IIC_ACK==1){ 
      fault++;
        if (fault ==100) return;
  }