#include "portselection.h"
#include "functions.h"

volatile char x,i;
volatile long t_delay;
char input_k(){
  volatile char *port_k_in = 0x106;
  return *port_k_in;
}
void setup() {
  init_port();
  /*while(1){
    x = input_k();
    if ((x & 0x01) == 0x01){
      output_f(1);
    }
    else{
      output_f(0);
    }
  }*/

}

void loop() {
  x = input_k();
  if ((x & 0x01) == 0x01){
    output_f(0xFF);
  }
  else if((x & 0x02) == 0x02){
    output_f(0xFF);
    for(t_delay = 0;t_delay<100000;t_delay++);
    output_f(0);
    for(t_delay = 0;t_delay<100000;t_delay++);
  }
  else if((x & 0x04) == 0x04){
    for(i =0;i<=7;i++){
      output_f(power(2,i));
      for(t_delay = 0;t_delay<100000;t_delay++);
    }
  }
  else if((x & 0xF8) != 0x00){
    for(i =7;i>=0;i--){
      output_f(power(2,i));
      for(t_delay = 0;t_delay<100000;t_delay++);
    }
  }
  else{
    output_f(0);
  }

}