//Displaying ATD0 channel 5 on LEDs of PORTB in C Language for Dragon12+ Trainer Board 
//with HCS12 Serial Monitor Program installed. This code is for CodeWarrior IDE
//Modified from Program 13-1C of HCS12 book by Mazidi & Causey 
//In Dragon12+ PLL=48MHz. 48MHz/2=24MHz, Divivde by 24 to get 1MHz for conversion freq. 
//ADC channel 5 (PAD5) is connected to Temp Sensor (U14A close to POT)
//Slowly warm up (or touch) Temp Sensor to see changes on LEDs of PORTB. NOT TOO HOT or the board will be damaged
 
#include <hidef.h>      /* common defines and macros */
#include "derivative.h"      /* derivative-specific definitions */


  void MSDelay(unsigned int);
void main(void) {
  /* put your own code here */
  
    

    DDRB = 0xFF;    //PORTB as output
    DDRJ = 0xFF;    //PTJ as output for Dragon12+ LEDs
    PTJ=0x0;        //Allow the LEDs to dsiplay data on PORTB pins
    
 ATD0CTL2 = 0x80;     //Turn on ADC,..No Interrupt
    MSDelay(5);
    ATD0CTL3 = 0x08;  //one conversion, no FIFO
    ATD0CTL4 = 0xEB;  //8-bit resolu, 16-clock for 2nd phase,
                      //prescaler of 24 for Conversion Freq=1MHz  
    for(;;)
    {
    ATD0CTL5 = 0x85;  //Channel 5 (right justified, unsigned,single-conver,one chan only) 

    while(!(ATD0STAT0 & 0x80));
    PORTB = ATD0DR0L;  //dump it on LEDs
    
MSDelay(2);   //optional
    }
    

  }

 void MSDelay(unsigned int itime)
  {
    unsigned int i; unsigned int j;
    for(i=0;i<itime;i++)
      for(j=0;j<4000;j++);
  }