IR over IP project.

arduino-irip.cpp

//
// Includes
//
#include <IRremote.h>
#include <SPI.h>
#include <Ethernet.h>

//
// Globals
//
int RECV_PIN = 3;
byte mac[] = {  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };    // Adapter MAC

//
// Inits
//
IRrecv irrecv(RECV_PIN);
decode_results results;

// Network settings for the Eth shield...
byte gateway[] = { 192,168,0,1 };
byte ip[] = { 192,168,0,223 };   

// IP of the Raspi and the connection context
IPAddress server(192,168,0,234);  // Raspi DVR-IR Transmitter Server IP
EthernetClient client;


/**
 * Bit shitty, but get a String (char*) for a remote code.
 * lirc only likes textual names for commands, not codes -.-
 */
String get_rcode_name(long rcode)
{
  switch(rcode)
  {
    case  0x20DF30CF:
      return "STAND_BY";
    case  0x20DF50AF:
      return "LOGIN_LOCK";
    case  0x20DF807F:
      return "NUM_1";
    case  0x20DF40BF:
      return "NUM_2";
    case  0x20DFC03F:
      return "NUM_3";
    case  0x20DF20DF:
      return "NUM_4";
    case  0x20DFA05F:
      return "NUM_5";
    case  0x20DF609F:
      return "NUM_6";
    case  0x20DFE01F:
      return "NUM_7";
    case  0x20DF10EF:
      return "NUM_8";
    case  0x20DF906F:
      return "NUM_9";
    case  0x20DF18E7:
      return "NUM_0";
    case  0x20DF28D7:
      return "GRID";
    case  0x20DF08F7:
      return "MENU";
    case  0x20DF6897:
      return "PTZ";
    case 0x20DF7887:
      return "EXIT";
    case  0x20DF48B7:
      return "DIR_UP";
    case  0x20DFA857:
      return "DIR_RIGHT";
    case  0x20DFB847:
      return "DIR_DOWN";
    case  0x20DFF00F:
      return "DIR_LEFT";
    case  0x20DF00FF:
      return "OK";
    case  0x20DF9867:
      return "PLUS";
    case  0x20DF38C7:
      return "MINUS";
    case  0x20DF708F: 
      return "REC";
    case  0x20DFB04F:
      return "STOP";
    case  0x20DFF807:
      return "EXTRA";
    case  0x20DFE817:
      return "RW";
    case  0x20DF8877:
      return "PLAY";
    case  0x20DF2AD5:
      return "FF";
    case  0x20DFD02F:
      return "END";
    case  0x20DFC837:
      return "PLAY_STOP";
    case  0x20DF58A7:
      return "AUDIO";
    case  0x20DFD827:
      return "MUTE";
  } 
  
  return "NOP";
}

void setup()
{
  // Open serial for debugging
  Serial.begin(9600);
  
  // Start the receiver
  irrecv.enableIRIn(); 
  
  // Start ethernet
  Ethernet.begin(mac, ip, gateway);
}

/**
 * Transmit a code over the network.
 */ 
void tx_code(decode_results *results)
{
  if (results->decode_type == NEC && results->bits == 32)
  {
    
    // Diagnostics - serial
    Serial.print(results->value, HEX);
    Serial.print(" (");
    Serial.print(results->bits, DEC);
    Serial.println(" bits)");
    
    // Make request
    if (client.connect(server, 80))
    {
      client.print("GET /?code=");
      client.print(get_rcode_name(results->value));
      client.println(" HTTP/1.1");
      client.println("Host: 198.211.121.22");
      client.println();
      client.println();
      client.stop();
    } 
  }
}

/**
 * Decode any received IR codes.
 */
void loop()
{
  if (irrecv.decode(&results))
  {
    tx_code(&results);
    irrecv.resume(); // Receive the next value
  }
}

index.php

<?php
/**
 * Convert HTTP requests into CIR transmissions.
 */

// Get the code
$code = isset($_GET['code']) ? $_GET['code'] : '';

// Valid?
if(!$code)
{
  // Didn't get a code.
  exit();
}

// Request to send the code
// This will be running on my home network, and is a quick hack.
// note that this line would pose a severe security risk outside.
system('irsend SEND_ONCE DVR ' . $code);


// Log it
$f = fopen('codes.log', 'a');
fwrite($f, $code . PHP_EOL);
fclose($f);

lircd.conf

begin remote

  name  DVR
  bits           32
  flags SPACE_ENC
  eps            20
  aeps          200

  header       8800  4400
  one           550  1650
  zero          550   550
  ptrail        550
  repeat       8800  2200
  gap          38500
  toggle_bit      0

  frequency    38000

    begin codes
    
      STAND_BY 0x20DF30CF
    	LOGIN_LOCK 0x20DF50AF
    	NUM_1 0x20DF807F
    	NUM_2 0x20DF40BF
    	NUM_3 0x20DFC03F
    	NUM_4 0x20DF20DF
    	NUM_5 0x20DFA05F
    	NUM_6 0x20DF609F
    	NUM_7 0x20DFE01F
    	NUM_8 0x20DF10EF
    	NUM_9 0x20DF906F
    	NUM_0 0x20DF18E7
    
    	GRID 0x20DF28D7
    	MENU 0x20DF08F7
    	PTZ 0x20DF6897
    	EXIT 0x20DF6897
    
    	DIR_UP 0x20DF48B7
    	DIR_RIGHT 0x20DFA857
    	DIR_DOWN 0x20DFB847
    	DIR_LEFT 0x20DFF00F
    	OK 0x20DF00FF
    
    	PLUS 0x20DF9867
    	MINUS 0x20DF38C7
    
    	REC 0x20DF708F	
    	STOP 0x20DFB04F
    	EXTRA 0x20DFF807
    
    	RW 0x20DFE817
    	PLAY 0x20DF8877
    	FF 0x20DF2AD5
    	END 0x20DFD02F
    	PLAY_STOP 0x20DFC837
    
    	AUDIO 0x20DF58A7
    	MUTE 0x20DFD827

  end codes

end remote