#include <Wire.h>
#include <Adafruit_BME280.h>

Adafruit_BME280 sensor;
constexpr int SDA_PIN = 8;
constexpr int SCL_PIN = 9;

void setup() {
  Serial.begin(115200);
  Wire.begin(SDA_PIN, SCL_PIN, 100000);
  if (!sensor.begin(0x76, &Wire) &&
      !sensor.begin(0x77, &Wire)) {
    Serial.println("BME280 unavailable: check wiring/address");
    while (true) delay(1000);
  }
  Serial.println("ms,temperature_c,humidity_pct,pressure_hpa");
}

void loop() {
  const float t = sensor.readTemperature();
  const float h = sensor.readHumidity();
  const float p = sensor.readPressure() / 100.0F;
  if (isfinite(t) && isfinite(h) && isfinite(p)) {
    Serial.printf("%lu,%.2f,%.2f,%.2f\n", millis(), t, h, p);
  }
  delay(2000);
}