common.c

RTC UART in lpc 2148

/************************************************************/
/* PROJECT NAME: GPIO	                                    */
/* Project:      LPC2129 Training course                    */
/* Engineer:     Y.Stalin        [e-mail]       */
/* Filename:     common.c 		                            */
/* Language:     C                      	                */
/* Compiler:     Keil ARM	GCC			                    */
/* Assembler:    				                            */
/*                                                          */
/************************************************************/
/* COPYRIGHT: NSTL 		2008		  						*/
/* LICENSE:   PROPRIETORY									*/
/************************************************************/
/* Function:                                                */
/*                                                          */
/* Example 									           		*/
/*															*/
/* Demonstrates Use of the LPC2129 GPIO						*/
/*															*/	
/* Oscillator frequency 12.000 Mhz							*/
/* Target board NSTL NST2100								*/
/************************************************************/

#include <LPC214X.H>
#include"common.h"

void delay(int count)
{
  int i,j;
  int count1 = DELAY_COUNT;


  for (i=0;i<count1;i++)
  {
    for (j=0;j<count;j++);
  }
}

void delaym(int count)
{
  int i,j;
  
  for (i=0;i<count;i++)    
    for (j=0;j<11;j++)    
    ;
    
  
}
		  

unsigned char* getBCD(unsigned int hexData)
{
  unsigned int i,q,r,temp = 10000;

  static unsigned char bcdAry[6];
  
  q = hexData;
  r = q;
 
  for(i=0;i<5;i++)
  {
    q = q / temp;	
    r = r % temp; 
	bcdAry[i] = q+0x30;
	q = r;
	temp = temp / 10;
  }  
  bcdAry[i] = NUL;

  return bcdAry;  
}

unsigned char* getBCDP(unsigned int hexData,unsigned int nod)
{
  unsigned int i,q,r,temp = 10000;

  static unsigned char bcdAry[6];
  
  q = hexData;
  r = q;
 
  for(i=0;i<5;i++)
  {
    q = q / temp;	
    r = r % temp; 
	bcdAry[i] = q+0x30;
	q = r;
	temp = temp / 10;
  }  
  bcdAry[i] = NUL;

  for(i=0;bcdAry[i]!= NUL;i++)
   bcdAry[i] = bcdAry[i+5-nod];    
  bcdAry[i] = NUL;  
  return bcdAry;  
}

unsigned char* getASCII(unsigned int hexData)
{
  static unsigned char tempAry[3];
  int i,temp;
  
  for(i=0;i<2;i++)
  {
    if(i==0)
     temp = (hexData & 0xF0) >> 4; 
	else
	 temp = hexData & 0x0F; 

	if(temp <= 0x09)
      tempAry[i] =  temp + 0x30;
	else	  
	  tempAry[i] =  temp + 0x37;	  
  }
  
  tempAry[i] = NUL;

  return tempAry;  
}

void setClock(void)
{
  unsigned int M,P = 2;

  M = F_CLK/F_XTAL;  
   
  PLL0CFG =(P << 4)|(M-1);

  PLL0FEED = 0xAA;
  PLL0FEED = 0x55;

  if(F_PCLK == (F_CLK / 4))
    VPBDIV = 0x00;
  else if(F_PCLK == F_CLK)
	VPBDIV = 0x01;
  else if(F_PCLK == (F_CLK / 2))
	VPBDIV = 0x02;
  else 
    VPBDIV = 0x01; 
}