Specification

What	Description	Comments
Identifier	BME280
Interface	I2C
Provides	temperature	celsius degrees
	humidity	% relative humidity
	pressure	hPa
Properties	mode	sensor mode (r/w)0=sleep, 1=forced, 2=normal
	standbytime	standby time in msecs (r/w)
Notes	BME280 adress is 0x76 (default) or 0x77
Datasheet

Code

-- Attach BME280 to I2C0, with default values
s = sensor.attach("BME280", i2c.I2C0, 0)

while true do
  -- Read temperature
  temperature = s:read("temperature")

  -- Read humidity
  humidity = s:read("humidity")

  -- Read preassure
  pressure = s:read("pressure")

  -- Print results
  print("temp: "..temperature..", humidity: "..humidity..", pressure: "..pressure)

  tmr.delayms(500)
end