Added Aiwa protocol (remote control RC-T501).

Added Aiwa protocol (remote control RC-T501) based on lirc file.
Updated IRrecvDump example, added SendDemo example (AiwaRCT501SendDemo).

IRremote.cpp

@@ -506,6 +506,13 @@ int IRrecv::decode(decode_results *results) {
   if (decodeWhynter(results)) {
     return DECODED;
   }
+// Aiwa RC-T501
+#ifdef DEBUG
+  Serial.println("Attempting Aiwa RC-T501 decode");
+#endif 
+  if (decodeAiwaRCT501(results)) {
+    return DECODED;
+  }
   // decodeHash returns a hash on any input.
   // Thus, it needs to be last in the list.
   // If you add any decodes, add them before this.
@@ -1117,6 +1124,65 @@ long IRrecv::decodeSAMSUNG(decode_results *results) {
   return DECODED;
 }
 
+/**
+ * Aiwa system
+ * Remote control RC-T501
+ * Lirc file http://lirc.sourceforge.net/remotes/aiwa/RC-T501 
+ *
+ */
+long IRrecv::decodeAiwaRCT501(decode_results *results) {
+  int data = 0;
+  int offset = 1; // skip first garbage read
+
+  // Check SIZE
+  if(irparams.rawlen < 2 * (AIWA_RC_T501_SUM_BITS) + 4) {
+    return ERR;
+  }
+  
+  // Check HDR
+  if(!MATCH_MARK(results->rawbuf[offset], AIWA_RC_T501_HDR_MARK)) {
+    return ERR;
+  }
+  offset++;
+
+  // Check HDR space
+  if(!MATCH_SPACE(results->rawbuf[offset], AIWA_RC_T501_HDR_SPACE)) {
+    return ERR;
+  }
+  offset++;
+
+  offset += 26; // skip pre-data - optional
+  while(offset < irparams.rawlen - 4) {
+    if(MATCH_MARK(results->rawbuf[offset], AIWA_RC_T501_BIT_MARK)) {
+      offset++;
+    } 
+    else {
+      return ERR;
+    }
+    
+    // ONE & ZERO
+    if(MATCH_SPACE(results->rawbuf[offset], AIWA_RC_T501_ONE_SPACE)) {
+      data = (data << 1) | 1;
+    } 
+    else if(MATCH_SPACE(results->rawbuf[offset], AIWA_RC_T501_ZERO_SPACE)) {
+      data <<= 1;
+    } 
+    else {
+      // End of one & zero detected
+      break;
+    }
+    offset++;
+  }
+  
+  results->bits = (offset - 1) / 2;
+  if(results->bits < 42) {
+    return ERR;
+  }
+  results->value = data;
+  results->decode_type = AIWA_RC_T501;
+  return DECODED;
+}
+
 /* -----------------------------------------------------------------------
  * hashdecode - decode an arbitrary IR code.
  * Instead of decoding using a standard encoding scheme
@@ -1239,3 +1305,53 @@ void IRsend::sendDISH(unsigned long data, int nbits) {
     data <<= 1;
   }
 }
+
+/**
+ * Aiwa system
+ * Remote control RC-T501
+ * Lirc file http://lirc.sourceforge.net/remotes/aiwa/RC-T501 
+ *
+ */
+void IRsend::sendAiwaRCT501(int code) {
+  // PRE-DATA, 26 bits, 0x227EEC0
+  long int pre = 0x227EEC0;
+  int i;
+  
+  enableIROut(AIWA_RC_T501_HZ);
+  
+  // HDR mark + HDR space
+  mark(AIWA_RC_T501_HDR_MARK);
+  space(AIWA_RC_T501_HDR_SPACE);
+
+  // Skip leading zero's
+  pre <<= 6;
+  // Send pre-data
+  for(i=0; i < 26; i++) {
+    mark(AIWA_RC_T501_BIT_MARK);
+    if(pre & TOPBIT) {
+      space(AIWA_RC_T501_ONE_SPACE);
+    } else {
+      space(AIWA_RC_T501_ZERO_SPACE);
+    }
+    pre <<= 1;
+  }
+
+  // Skip firts code bit
+  code <<= 1;
+  // Send code
+  for(i=0; i < 15; i++) {
+    mark(AIWA_RC_T501_BIT_MARK);
+    if(code & TOPBIT) {
+      space(AIWA_RC_T501_ONE_SPACE);
+    } else {
+      space(AIWA_RC_T501_ZERO_SPACE);
+    }
+    code <<= 1;
+  }
+  // POST-DATA, 1 bit, 0x0
+  mark(AIWA_RC_T501_BIT_MARK);
+  space(AIWA_RC_T501_ZERO_SPACE);
+
+  mark(AIWA_RC_T501_BIT_MARK);
+  space(0);
+}

IRremote.h

@@ -53,6 +53,7 @@ public:
 #define SAMSUNG 11
 #define LG 12
 #define WHYNTER 13
+#define AIWA_RC_T501 14
 #define UNKNOWN -1
 
 // Decoded value for NEC when a repeat code is received
@@ -81,6 +82,7 @@ private:
   long decodeJVC(decode_results *results);
   long decodeSAMSUNG(decode_results *results);
   long decodeWhynter(decode_results *results);
+  long decodeAiwaRCT501(decode_results *results);
   long decodeHash(decode_results *results);
   int compare(unsigned int oldval, unsigned int newval);
 
@@ -111,6 +113,7 @@ public:
   void sendSharpRaw(unsigned long data, int nbits);
   void sendPanasonic(unsigned int address, unsigned long data);
   void sendJVC(unsigned long data, int nbits, int repeat); // *Note instead of sending the REPEAT constant if you want the JVC repeat signal sent, send the original code value and change the repeat argument from 0 to 1. JVC protocol repeats by skipping the header NOT by sending a separate code value like NEC does.
+  void sendAiwaRCT501(int code);
   // private:
   void sendSAMSUNG(unsigned long data, int nbits);
   void enableIROut(int khz);

IRremoteInt.h

@@ -190,6 +190,20 @@
 #define SHARP_BITS 15
 #define DISH_BITS 16
 
+// AIWA RC T501
+// Lirc file http://lirc.sourceforge.net/remotes/aiwa/RC-T501 
+#define AIWA_RC_T501_HZ 38
+#define AIWA_RC_T501_BITS 15
+#define AIWA_RC_T501_PRE_BITS 26
+#define AIWA_RC_T501_POST_BITS 1
+#define AIWA_RC_T501_SUM_BITS AIWA_RC_T501_PRE_BITS+AIWA_RC_T501_BITS+AIWA_RC_T501_POST_BITS
+#define AIWA_RC_T501_HDR_MARK 8800
+#define AIWA_RC_T501_HDR_SPACE 4500
+#define AIWA_RC_T501_BIT_MARK 500
+#define AIWA_RC_T501_ONE_SPACE 600
+#define AIWA_RC_T501_ZERO_SPACE 1700
+
+
 #define TOLERANCE 25  // percent tolerance in measurements
 #define LTOL (1.0 - TOLERANCE/100.) 
 #define UTOL (1.0 + TOLERANCE/100.) 

examples/AiwaRCT501SendDemo/AiwaRCT501SendDemo.ino

@@ -0,0 +1,25 @@
+/*
+ * IRremote: IRsendDemo - demonstrates sending IR codes with IRsend
+ * An IR LED must be connected to Arduino PWM pin 3.
+ * Version 0.1 July, 2009
+ * Copyright 2009 Ken Shirriff
+ * http://arcfn.com
+ */
+
+#include "IRremote.h"
+
+#define POWER 0x7F80
+
+IRsend irsend;
+
+void setup() {
+  Serial.begin(9600);
+  Serial.println("Arduino Ready");
+}
+
+void loop() {
+  if (Serial.read() != -1) {
+    irsend.sendAiwaRCT501(POWER);
+    delay(60); // Optional
+  }
+}

examples/IRrecvDump/IRrecvDump.ino

@@ -54,6 +54,10 @@ void dump(decode_results *results) {
   }
   else if (results->decode_type == JVC) {
      Serial.print("Decoded JVC: ");
+  
+  }
+  else if (results->decode_type == AIWA_RC_T501) {
+    Serial.print("Decoded AIWA RC T501: ");
   }
   else if (results->decode_type == WHYNTER) {
      Serial.print("Decoded Whynter: ");