Fix ir_receiver to use IRremote 4.x built-in functions

Replace manual raw buffer access with library helper functions:
- Use printIRResultShort() for formatted output
- Use printIRSendUsage() to print C array format for sender
- Remove custom dump() function that accessed rawDataPtr
- Simplify code to use only well-documented API functions

This should fix compilation errors by using stable, documented
IRremote 4.x API instead of trying to access internal structures.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: claude

ac_control/ir_receiver/ir_receiver.ino

@@ -1,8 +1,8 @@
 #define sprint Serial.print
 #define sprintln Serial.println
 #include <IRremote.hpp> // IRremote 4.1.2 from Library Manager
-int RECV_PIN = 11;
 
+int RECV_PIN = 11;
 unsigned long timeBegin;
 int c = 1;
 
@@ -11,55 +11,33 @@ void setup()
   Serial.begin(9600);
   IrReceiver.begin(RECV_PIN, ENABLE_LED_FEEDBACK); // Start the receiver
   timeBegin = micros();
+  Serial.println(F("Ready to receive IR signals"));
 }
 
 void loop() {
   if (IrReceiver.decode()) {
-    dump();
-// ========
-    Serial.println(IrReceiver.decodedIRData.decodedRawData, HEX);
-    Serial.print("rawlen ");
-    Serial.println(IrReceiver.decodedIRData.rawDataPtr->rawlen);
-    Serial.print("decode type ");
+    // Print counter
+    sprintln(c);
+    c++;
+
+    // Use built-in print functions from IRremote library
+    IrReceiver.printIRResultShort(&Serial);
+    Serial.println();
+
+    // Print as C array for use in sender
+    IrReceiver.printIRSendUsage(&Serial);
+
+    // Additional details
+    Serial.print("Protocol: ");
     Serial.println(IrReceiver.decodedIRData.protocol);
+    Serial.print("Decoded value: 0x");
+    Serial.println(IrReceiver.decodedIRData.decodedRawData, HEX);
 
     unsigned long timeEnd = micros();
     unsigned long duration = timeEnd - timeBegin;
     double averageDuration = (double)duration / 1000.0;
     Serial.println(averageDuration);
-//    if(IrReceiver.decodedIRData.decodedRawData==0xA1026EFF) {
-//      Serial.println("turning off");
-//    }
+
     IrReceiver.resume(); // Receive the next value
   }
 }
-
-void dump() {
-   int count = IrReceiver.decodedIRData.rawDataPtr->rawlen;
-   sprintln(c);
-   c++;
-   sprintln("For IR Scope: ");
-   for (int i = 1; i < count; i++) {
-       sprint("0x");
-       sprint((unsigned int)IrReceiver.decodedIRData.rawDataPtr->rawbuf[i] * MICROS_PER_TICK, HEX);
-    sprint(" ");
-   }
-
-   sprintln("");
-   sprintln("For Arduino sketch: ");
-   sprint("uint16_t raw[");
-   sprint(count, DEC);
-   sprint("] = {");
-   for (int i = 1; i < count; i++) {
-       sprint("0x");
-       sprint((unsigned int)IrReceiver.decodedIRData.rawDataPtr->rawbuf[i] * MICROS_PER_TICK, HEX);
-       sprint(",");
-    }
-    sprint("};");
-    sprintln("");
-    sprint("IrSender.sendRaw(raw,");
-    sprint(count, DEC);
-    sprint(",38);");
-    sprintln("");
-    sprintln("");
-}