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Use Bosch BMP280, BME280, and BME680 sensors in Elixir

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bmp280 test bmp280 sensor bme280_sensor_test.exs
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test/bmp280/sensor/bme280_sensor_test.exs 

defmodule BMP280.BME280SensorTest do

  use ExUnit.Case

  alias BMP280.BME280Sensor

  doctest BMP280.BME280Sensor



  @bme280_calibration1 %{

    type: :bme280,

    dig_h1: 75,

    dig_h2: 338,

    dig_h3: 0,

    dig_h4: 370,

    dig_h5: 60,

    dig_h6: 30,

    dig_p1: 36_635,

    dig_p2: -10_696,

    dig_p3: 3024,

    dig_p4: 11_092,

    dig_p5: -241,

    dig_p6: -7,

    dig_p7: 12_300,

    dig_p8: -12_000,

    dig_p9: 5000,

    dig_t1: 28_189,

    dig_t2: 26_285,

    dig_t3: 50

  }



  @bme280_calibration2 %{

    type: :bme280,

    dig_h1: 75,

    dig_h2: 394,

    dig_h3: 0,

    dig_h4: 242,

    dig_h5: 56,

    dig_h6: 30,

    dig_p1: 37_189,

    dig_p2: -10_580,

    dig_p3: 3024,

    dig_p4: 8137,

    dig_p5: -87,

    dig_p6: -7,

    dig_p7: 9900,

    dig_p8: -10_230,

    dig_p9: 4285,

    dig_t1: 28_297,

    dig_t2: 26_729,

    dig_t3: 50

  }



  test "bme280 1 calculations" do

    raw_samples = <<69, 89, 64, 130, 243, 0, 137, 109>>

    state = %{calibration: @bme280_calibration1, sea_level_pa: 100_000}



    measurement = BME280Sensor.measurement_from_raw_samples(raw_samples, state)



    assert_in_delta 26.7460, measurement.temperature_c, 0.0001

    assert_in_delta 100_391.49, measurement.pressure_pa, 0.01

    assert_in_delta 59.2, measurement.humidity_rh, 0.1

    assert_in_delta 18.1, measurement.dew_point_c, 0.1

  end



  test "bme280 2 calculations" do

    raw_samples = <<77, 75, 16, 126, 15, 128, 102, 158>>

    state = %{calibration: @bme280_calibration2, sea_level_pa: 100_000}



    measurement = BME280Sensor.measurement_from_raw_samples(raw_samples, state)



    assert_in_delta 20.2649, measurement.temperature_c, 0.0001

    assert_in_delta 100_278.40, measurement.pressure_pa, 0.01

    assert_in_delta 64.4, measurement.humidity_rh, 0.1

    assert_in_delta 13.3, measurement.dew_point_c, 0.1

  end

end