実際のところ
レインボーカラーで段階的に色が変わっていくサンプル
後々のため、I2Cでステータスを出すコードもコメントアウトで残しておきます
#include <M5Unified.h> #include <FastLED.h> //#include <Wire.h> // LED Strip Configuration #define LED_PIN 3 // GPIO pin for LED data (change as needed) #define NUM_LEDS 24 // Number of LEDs in your strip #define BRIGHTNESS 50 // LED brightness (0-255) // I2C Pin Configuration #define I2C_SDA 13 #define I2C_SCL 15 CRGB leds[NUM_LEDS]; void setup() { auto cfg = M5.config(); M5.begin(cfg); // Initialize LED strip FastLED.addLeds<SK6812, LED_PIN, GRB>(leds, NUM_LEDS); FastLED.setBrightness(BRIGHTNESS); // Initialize I2C (not used in this example, but ready for future use) //Wire.begin(I2C_SDA, I2C_SCL); Serial.println("M5Stamp S3 SK6812 LED Strip Test"); Serial.printf("LED Data Pin: %d\n", LED_PIN); Serial.printf("I2C Pins: SDA=%d, SCL=%d\n", I2C_SDA, I2C_SCL); } void loop() { // Rainbow effect for LED strip static uint8_t hue = 0; for(int i = 0; i < NUM_LEDS; i++) { leds[i] = CHSV(hue + (i * 10), 255, 255); } FastLED.show(); // Gradually change hue EVERY_N_MILLISECONDS(20) { hue++; } // Print status message every second EVERY_N_SECONDS(1) { Serial.println("LED animation running..."); } // Example of I2C usage (commented out) // EVERY_N_SECONDS(5) { // // Perform I2C communication here // // For example: read from an I2C sensor // // Wire.beginTransmission(SENSOR_ADDRESS); // // Wire.write(REGISTER_ADDRESS); // // Wire.endTransmission(); // // Wire.requestFrom(SENSOR_ADDRESS, 2); // // if (Wire.available()) { // // int sensorData = Wire.read() << 8 | Wire.read(); // // Serial.printf("Sensor data: %d\n", sensorData); // // } // } }
