Simple Arduino Based Lego Power Function Receiver

1/*
2 * IRremote: IRrecvDemo - demonstrates receiving IR codes with IRrecv
3  * An IR detector/demodulator must be connected to the input RECV_PIN.
4 * Version  0.1 July, 2009
5 * Copyright 2009 Ken Shirriff
6 * http://arcfn.com
7 */
8
9/*
10  * Testing code for receiving data from the Lego Power Function IR Remote Control  http://bit.ly/1Gq18RG
11 * If you want to deepen the knowledge of Lego Power Functions  Modules, http://www.philohome.com/pf/pf.htm
12 *
13 * TODO:
14 * - test if LEGO®  Power Functions IR Speed Remote Control uses the same protocol http://bit.ly/1wDQ13l
15  * - sort out some extra codes received
16 *
17 * Davide Gomba, 16/12/2014
18  *Arturo Guadalupi, 17/12/2014
19 *
20 *Available Macros:
21 *CH1_LEFT_UP
22  *CH1_LEFT_DOWN
23 *CH1_RIGHT_UP
24 *CH1_RIGHT_DOWN
25 *CH1_BREAK
26 *
27 *CH2_LEFT_UP
28  *CH2_LEFT_DOWN
29 *CH2_RIGHT_UP
30 *CH2_RIGHT_DOWN
31 *CH2_BREAK
32 *
33 *CH3_LEFT_UP
34  *CH3_LEFT_DOWN
35 *CH3_RIGHT_UP
36 *CH3_RIGHT_DOWN
37 *CH3_BREAK
38 *
39 *CH4_LEFT_UP
40  *CH4_LEFT_DOWN
41 *CH4_RIGHT_UP
42 *CH4_RIGHT_DOWN
43 */
44 
45#include <IRremote.h>
46#include  "codes.h"
47
48const int RECV_LED = 12;
49const int RECV_PIN = 3; // Digital  IO pin connected to the IR receiver
50IRrecv irrecv(RECV_PIN);
51
52long unsigned  startTime = millis();
53
54decode_results results;
55
56void setup()
57{
58  pinMode(RECV_LED, OUTPUT);
59  Serial.begin(9600);
60  irrecv.enableIRIn();  // Start the receiver
61
62}
63
64void loop() {
65  if(millis() - startTime  > 200)
66    digitalWrite(RECV_LED, LOW);
67  else
68    digitalWrite(RECV_LED,  HIGH);
69    
70  if (irrecv.decode(&results)) {
71    if(legoCode(results.value)  != -1) //known code
72      startTime = millis();
73    // Channel #1
74   
75    if (legoCode(results.value) == CH1_LEFT_UP)
76    {
77      Serial.println("  CH - 1 // LEFT UP");
78    }
79    else if (legoCode(results.value) == CH1_LEFT_DOWN)
80  {
81    Serial.println(" CH - 1 // LEFT DOWN");
82    }
83    else  if (legoCode(results.value)  == CH1_RIGHT_UP) {
84    Serial.println(" CH - 1 // RIGHT UP");
85    }
86    else if (legoCode(results.value) == CH1_RIGHT_DOWN) {
87    Serial.println("  CH - 1 // RIGHT DOWN");
88    }
89    else if (legoCode(results.value) == CH1_BREAK)  {
90    Serial.println(" CH - 1 // BREAK");
91    }
92
93    // Channel #2
94
95    else if (legoCode(results.value) == CH2_LEFT_UP) {
96    Serial.println("  CH - 2 // LEFT UP");
97    }
98    else if (legoCode(results.value) == CH2_LEFT_DOWN)  {
99    Serial.println(" CH - 2 // LEFT DOWN");
100    }
101    else  if (legoCode(results.value)  == CH2_RIGHT_UP){
102    Serial.println(" CH - 2 // RIGHT UP");
103    }
104    else  if (legoCode(results.value) == CH2_RIGHT_DOWN){
105    Serial.println(" CH - 2  // RIGHT DOWN");
106    }
107    else if (legoCode(results.value) == CH2_BREAK)  {
108    Serial.println(" CH - 2 // BREAK");
109    }
110    
111    // Channel  #3
112    
113    else if (legoCode(results.value) == CH3_LEFT_UP) {
114    Serial.println("  CH - 3 // LEFT UP");
115    }
116    else if (legoCode(results.value) == CH3_LEFT_DOWN)  {
117    Serial.println(" CH - 3 // LEFT DOWN");
118    }
119    else  if (legoCode(results.value)  == CH3_RIGHT_UP) {
120    Serial.println(" CH - 3 // RIGHT UP");
121    }
122    else if (legoCode(results.value) == CH3_RIGHT_DOWN){
123    Serial.println("  CH - 3 // RIGHT DOWN");
124    }
125    else if (legoCode(results.value) == CH3_BREAK)  {
126    Serial.println(" CH - 3 // BREAK");
127    }
128
129    // Channel #4
130
131    else if (legoCode(results.value) == CH4_LEFT_UP) {
132    Serial.println("  CH - 4 // LEFT UP");
133    }
134    else if (legoCode(results.value) == CH4_LEFT_DOWN)  {
135    Serial.println(" CH - 4 // LEFT DOWN");
136    }
137    else  if (legoCode(results.value)  == CH4_RIGHT_UP) {
138    Serial.println(" CH - 4 // RIGHT UP");
139    }
140    else if (legoCode(results.value) == CH4_RIGHT_DOWN) {
141    Serial.println("  CH - 4 // RIGHT DOWN");
142    }
143    else if (legoCode(results.value) == CH4_BREAK)  {
144    Serial.println(" CH - 4 // BREAK");
145    }
146    irrecv.resume();  // Receive the next value
147  }
148}