main.c

MC9S08QG8 Quick Start Examples,含ADC.C,KBI.GPIO.C等7个例程.

/*******************************************************************
**  Filename    : main.c
**  Project     : gpio example
**  Processor   : MC9S08QG8
**  Version     : $v
**  Location    : h:\projects\freescale\gpio\
**  Author      : Jim McLean
**  Company     : Highlander Technologies
**  Date        : 10/23/2005, 3:33 PM
**  Compiler    : Metrowerks CodeWarrior HC08 C Compiler
**  Notes       : HC9S08QG Quick Start Example
**              : This example can be used on the DEMO9S08QG8 board
**
*******************************************************************/


#include <hidef.h> /* for EnableInterrupts macro */
#include <MC9S08QG8.h> /* include peripheral declarations */

void main(void) 
{

byte temp1 = 0;
byte temp2 = 0;

  PTBDD_PTBDD7 = 1;   // set PTB7 as an output, LED2 on demo board
  PTBDD_PTBDD6 = 1;   // set PTB6 as an output, LED1 on demo board

  PTBD_PTBD6 = 1;     // port b6
  PTBD_PTBD7 = 1;     // port b7

  PTADD_PTADD2 = 0;   // set PTA2 as an input
  PTADD_PTADD3 = 0;   // set PTA3 as an input
  
  PTAPE_PTAPE2 = 1;   // enable pullup resistor
  PTAPE_PTAPE3 = 1;   // enable pullup resistor


  for(;;) 
  {
  temp1 = PTAD_PTAD2; // read inputs
  temp2 = PTAD_PTAD3;
  
  PTBD_PTBD6 = temp1; // write outputs
  PTBD_PTBD7 = temp2;
  
    __RESET_WATCHDOG(); /* feeds the dog */
  } /* loop forever */
  
  /* please make sure that you never leave this function */
}