// connect 8 leds to port A
// connect 8 push button switches to port B
// press 0th switch --> 7th led should glow, ......7th switch ---> 0th led should glow

#include "ecen.h"
#include <math.h>

void setup() {
  init_portA();
  init_portB();
}

void loop() {
  uint8_t val;
  volatile long k;
  uint8_t i = inputB();
  val = log(i)/log(2.0);
  if(i!=0) {outputA(0x80>>val);
  for(k=0;k<=200000;k++);
  }
  else outputA(0x00);

}