inputSw.cpp

#include <cstdio>
#include <unistd.h>
#include <iostream>

using namespace std;

bool get0()
{
  bool sw_data = false;
  FILE *sw;
  sw = fopen("/dev/rtswitch0", "r");
  char data = fgetc(sw);
  if ( data == '0' ){
    sw_data = true;
  } else {
    sw_data = false;
  }
  fclose(sw);
  return sw_data;
}

bool get1()
{
  bool sw_data = false;
  FILE *sw;
  sw = fopen("/dev/rtswitch1", "r");
  char data = fgetc(sw);
  if ( data == '0' ){
    sw_data = true;
  } else {
    sw_data = false;
  }
  fclose(sw);
  return sw_data;
}

bool get2()
{
  bool sw_data = false;
  FILE *sw;
  sw = fopen("/dev/rtswitch2", "r");
  char data = fgetc(sw);
  if ( data == '0' ){
    sw_data = true;
  } else {
    sw_data = false;
  }
  fclose(sw);
  return sw_data;
}

int main()
{
  
  while( 1 )
  {
    cout << get0() << "," << get1() << "," << get2() << endl; 
  }

  return 0;
}

ltika.cpp

#include <cstdio>
#include <unistd.h>

using namespace std;

void set0( bool data )
{
  FILE *led;
  led = fopen("/dev/rtled0", "w" );

  if ( data ){
    fprintf( led, "1" );
  } else {
    fprintf( led, "0" );
  }

  fclose( led );
}

void set1( bool data )
{
  FILE *led;
  led = fopen("/dev/rtled1", "w" );

  if ( data ){
    fprintf( led, "1" );
  } else {
    fprintf( led, "0" );
  }

  fclose( led );
}

void set2( bool data )
{
  FILE *led;
  led = fopen("/dev/rtled2", "w" );

  if ( data ){
    fprintf( led, "1" );
  } else {
    fprintf( led, "0" );
  }

  fclose( led );
}

void set3( bool data )
{
  FILE *led;
  led = fopen("/dev/rtled3", "w" );

  if ( data ){
    fprintf( led, "1" );
  } else {
    fprintf( led, "0" );
  }

  fclose( led );
}

int main()
{

  while( 1 )
  {
    set0( true );
    set1( true );
    set2( true );
    set3( true );

    usleep( 500 * 1000 );

    set0( false );
    set1( false );
    set2( false );
    set3( false );

    usleep( 500 * 1000 );
    
  }

  return 0;
}