RFSniffer.cpp

/*
  RFSniffer

  Usage: ./RFSniffer [<pulseLength>]
  [] = optional

  Hacked from http://code.google.com/p/rc-switch/
  by @justy to provide a handy RF code sniffer
*/

#include "../rc-switch/RCSwitch.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>

RCSwitch mySwitch;

int main(int argc, char *argv[]) {

    // This pin is not the first pin on the RPi GPIO header!
    // Consult https://projects.drogon.net/raspberry-pi/wiringpi/pins/
    // for more information.
    int PIN = 2;

    if (wiringPiSetup() == -1) {
        printf("wiringPiSetup failed, exiting...");
        return 0;
    }

    int pulseLength = 0;
    if (argv[1] != NULL) pulseLength = atoi(argv[1]);

    mySwitch = RCSwitch();
    if (pulseLength != 0) mySwitch.setPulseLength(pulseLength);
    mySwitch.enableReceive(PIN);  // Receiver on interrupt 0 => that is pin #2

    while (1) {
        if (mySwitch.available()) {
            int value = mySwitch.getReceivedValue();

            if (value == 0) {
                printf("Unknown encoding\n");
            } else {
                printf(
                        "Received %i (bitlength: %i, delay: %i, protocol: %i, rawdata: %i)\n",
                        value,
                        mySwitch.getReceivedBitlength(),
                        mySwitch.getReceivedDelay(),
                        mySwitch.getReceivedProtocol(),
                        mySwitch.getReceivedRawdata()
                );
            }

            fflush(stdout);
            mySwitch.resetAvailable();
        }
        usleep(100);
    }
    exit(0);
}