adding ir remote example

Adding IR remote Arduino example for the Sparkle Motion Stick

Sparkle_Motion_Stick_Examples/Arduino_Sparkle_Motion_Stick_IR_Remote/Arduino_Sparkle_Motion_Stick_IR_Remote.ino

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+// SPDX-FileCopyrightText: 2024 Liz Clark for Adafruit Industries
+// SPDX-FileCopyrightText: 2025 Tim Cocks for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+
+/*
+ * Based on the SimpleReceiver.cpp and SimpleSender.cpp from the
+ * Arduino-IRremote https://github.com/Arduino-IRremote/Arduino-IRremote.
+ * by Armin Joachimsmeyer
+ ************************************************************************************
+ * MIT License
+ *
+ * Copyright (c) 2020-2023 Armin Joachimsmeyer
+ *
+ */
+
+#include <Arduino.h>
+
+#include <IRremote.hpp> // include the library
+#include <Adafruit_NeoPixel.h>
+
+#define NEOPIXEL_STRIP_PIN 21
+#define NUM_PIXELS 8
+
+#define IR_RECEIVE_PIN   10
+
+Adafruit_NeoPixel NEOPIXEL_STRIP(NUM_PIXELS, NEOPIXEL_STRIP_PIN, NEO_GRB + NEO_KHZ800);
+
+uint8_t upCmd = 0x5;
+uint8_t downCmd = 0xD;
+uint8_t rightCmd = 0xA;
+uint8_t leftCmd = 0x8;
+
+uint16_t pixelHue = 0;
+uint8_t brightness = 25;
+
+void setup() {
+    Serial.begin(115200);
+    //while (!Serial);
+    Serial.println("Adafruit Sparkle Motion IR Remote Control NeoPixels Demo");
+    IrReceiver.begin(IR_RECEIVE_PIN);
+    Serial.print("IRin on pin ");
+    Serial.print(IR_RECEIVE_PIN);
+    NEOPIXEL_STRIP.begin();
+    NEOPIXEL_STRIP.setBrightness(25);
+}
+
+void loop() {
+    /*
+     * Check if received data is available and if yes, try to decode it.
+     * When left or right buttons are pressed, change the pixelHue.
+     * When up or down buttons are pressed, change the brightness.
+     */
+    if (IrReceiver.decode()) {
+        if (IrReceiver.decodedIRData.protocol == UNKNOWN) {
+            Serial.println("unknown");
+            IrReceiver.printIRResultRawFormatted(&Serial, true);
+            IrReceiver.resume();
+        } else {
+            IrReceiver.resume();
+            //IrReceiver.printIRResultShort(&Serial);
+
+            // Ignore repeat codes from holding down the button
+            if (IrReceiver.decodedIRData.flags == 0){
+              //Serial.printf("Command: %d\n",IrReceiver.decodedIRData.command);
+              if (IrReceiver.decodedIRData.command == upCmd){
+                Serial.println("UP btn");
+                brightness = min(brightness + 25, 255);
+              }else if (IrReceiver.decodedIRData.command == downCmd){
+                Serial.println("DOWN btn");
+                brightness = max(brightness - 25, 0);
+              }else if (IrReceiver.decodedIRData.command == leftCmd){
+                Serial.println("LEFT btn");
+                pixelHue = (pixelHue - 8192) % 65536;
+              }else if (IrReceiver.decodedIRData.command == rightCmd){
+                Serial.println("RIGHT btn");
+                pixelHue = (pixelHue + 8192) % 65536;
+              }
+
+              NEOPIXEL_STRIP.setBrightness(brightness);
+              NEOPIXEL_STRIP.fill(NEOPIXEL_STRIP.gamma32(NEOPIXEL_STRIP.ColorHSV(pixelHue)));
+              NEOPIXEL_STRIP.show();
+              delay(100);
+            }
+        }
+        Serial.println();
+    }
+}