Add IR_remote_test environment with RC-6 emulation

Arduino/IR_remote_test/IR_remote_test.cpp

@@ -0,0 +1,80 @@
+#include <Arduino.h>
+
+#define IR_ARDUINO_PIN 10
+#define LED_PIN 3
+
+// RC-6 timing constants
+// 1 time unit (1t) = 444us (16 cycles of 36kHz carrier)
+static const uint16_t RC6_T = 444;
+
+// Mark = LOW on wire (simulating TSOP receiving an IR burst)
+void sendMark(uint16_t us) {
+  digitalWrite(IR_ARDUINO_PIN, LOW);
+  delayMicroseconds(us);
+}
+
+// Space = HIGH on wire (simulating TSOP idle)
+void sendSpace(uint16_t us) {
+  digitalWrite(IR_ARDUINO_PIN, HIGH);
+  delayMicroseconds(us);
+}
+
+// Send a single RC-6 bit using Manchester encoding
+// RC-6 Logic '1': Mark then Space
+// RC-6 Logic '0': Space then Mark
+void sendRC6Bit(uint8_t bit, uint8_t width) {
+  if (bit) {
+    sendMark(RC6_T * width);
+    sendSpace(RC6_T * width);
+  } else {
+    sendSpace(RC6_T * width);
+    sendMark(RC6_T * width);
+  }
+}
+
+// Send RC-6 Mode 6A (MCE) frame
+void sendRC6_MCE(uint32_t data, uint8_t toggle) {
+  // Leader: 6t mark + 2t space
+  sendMark(RC6_T * 6);
+  sendSpace(RC6_T * 2);
+
+  // Start bit: always 1
+  sendRC6Bit(1, 1);
+
+  // Mode bits: 1, 1, 0 (mode 6)
+  sendRC6Bit(1, 1);
+  sendRC6Bit(1, 1);
+  sendRC6Bit(0, 1);
+
+  // Toggle bit (double width = 2t per half-bit)
+  sendRC6Bit(toggle & 1, 2);
+
+  // 32 data bits, MSB first
+  for (int i = 31; i >= 0; i--) {
+    sendRC6Bit((data >> i) & 1, 1);
+  }
+
+  // Final return to idle state (HIGH)
+  sendSpace(40000); 
+}
+
+static uint8_t toggleBit = 0;
+
+void setup() {
+  pinMode(IR_ARDUINO_PIN, OUTPUT);
+  digitalWrite(IR_ARDUINO_PIN, HIGH); // Idle state
+
+  pinMode(LED_PIN, OUTPUT);
+  digitalWrite(LED_PIN, LOW);
+}
+
+void loop() {
+  digitalWrite(LED_PIN, HIGH);
+
+  // MCE scancode for Volume Up: 0x800f0410
+  sendRC6_MCE(0x800f0410, toggleBit);
+  toggleBit ^= 1; // MCE requires alternating toggle bit
+  
+  digitalWrite(LED_PIN, LOW);
+  delay(1000); // Send every 1 second
+}