Hat NCIR Arduino Tutorial

#include <M5Unified.h>
#include <Wire.h>

uint16_t result = 0;
float temperature = 0;

void setup() {
  // Initialization
  auto cfg = M5.config();
  M5.begin(cfg);
  Wire.begin(0, 26);  // Hat NCIR (SDA:G0, SCL:G26)
  Serial.begin(115200);

  // setup display
  M5.Display.setRotation(1);    // Depends on the direction in which the StickC_Plus2 is held
  M5.Display.setTextColor(WHITE);
  M5.Display.setTextSize(3);

  Serial.println("StickC-Plus2 with Hat NCIR is ready!");
}

void loop() {
    Wire.beginTransmission(0x5A);  // Send initial signal and I2C bus address
    Wire.write(0x07);  // Send data only once and automatically add one address
    Wire.endTransmission(false);  // Stop signal
    Wire.requestFrom(0x5A, 2);  // Request 2 consecutive data bytes from 0x5A

    if (Wire.available() >= 2) {
      result = Wire.read();        // Receive DATA
      result |= Wire.read() << 8;  // Receive DATA

      temperature = result * 0.02 - 273.15;   // Convert sensor reading to Celsius degrees

      // display on StickC-Plus2's screen
      M5.Display.fillScreen(BLACK);
      M5.Display.setCursor(60, 53);
      M5.Display.printf("%.2fC", temperature);

      // display on serial terminal
      Serial.printf("Temperature: %.2f °C\n", temperature);
    }
    else {
      Serial.println("Error reading from sensor");
    }

    delay(500);
    M5.update();
}