HCS08 Example1-digital Read and write

//Frescale HCS08  MC9S08DZ128

//Codewarrior Development studio v 10.6

//Digital read and write//bitwise

//12/3/2015

//written by Binu Kannur

#include <hidef.h> /* for EnableInterrupts macro */

#include "derivative.h" /* include peripheral declarations */

int sw;

void main(void)

{

 // EnableInterrupts;

  /* include your code here */

  PTBDD_PTBDD0=1;//set PortB data direction bit0  //output//PTxDD_PTxDDn

  PTBDD_PTBDD2=1;//set PortB data direction bit2 //output //PTxDD_PTxDDn

  PTDDD_PTDDD1=0;//set PortD data direction bit1 //Input  //PTxDD_PTxDDn

  for(;;)

  {

    __RESET_WATCHDOG();    /* feeds the dog */

   

     if( PTDD_PTDD1==1)// check PortD bit1 is high?//connect aswitch

    {

        PTBD_PTBD0=1;   //PortB bit0 high

        PTBD_PTBD2=0;   //PortB bit2 low

    }

    else if( PTDD_PTDD1==0)

    {

         PTBD_PTBD0=0;

        PTBD_PTBD2=1;

    }

   }

}

///////////////////////////////////////

//PTADD=0;     Port A all input

//PTxPEn   ---Pullup enable

//0—disable

//1- enable

//PTxSEn=1   slew rate enabled

//PTxSEn=0    slew rate disabled

//PTxDSn----low drive

//PTxDSn=1---high