emiliosancheza/bme280-sensor/bme280-device

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bme280-device

@/bme280-device

MODEbyte

Operating mode for the sensor. Options: forced mode = 01h, normal mode = 03h.

OSTbyte

Oversampling rate for temperature sensor. Options: no over-sampling = 00h, 1x over-sampling = 01h, 2x over-sampling = 02h, 4x over-sampling = 03h, 8x over-sampling = 04h, 16x over-sampling = 05h.

OSPbyte

Oversampling rate for pressure sensor. Options: no over-sampling = 00h, 1x over-sampling = 01h, 2x over-sampling = 02h, 4x over-sampling = 03h, 8x over-sampling = 04h, 16x over-sampling = 05h.

OSHbyte

Oversampling rate for humidity sensor. Options: no over-sampling = 00h, 1x over-sampling = 01h, 2x over-sampling = 02h, 4x over-sampling = 03h, 8x over-sampling = 04h, 16x over-sampling = 05h.

FILTbyte

Filtering level for sensor data. Options: no filtering = 00h, 2x filtering = 01h, 4x filtering = 02h, 8x filtering = 03h, 16x filtering = 04h.

STDBYbyte

Standby duration in milliseconds. Options: 1 ms = 00h, 62.5 ms = 01h, 125 ms = 02h, 250 ms = 03h, 500 ms = 04h, 1000 ms = 05h, 2000 ms = 06h, 4000 ms = 07h.

DEV@/bme280-device

To use the node in your project you should have the emiliosancheza/bme280-sensor library installed. Use the “File → Add Library” menu item in XOD IDE if you don’t have it yet. See Using libraries for more info.

// Tell XOD where it could download the library:
#pragma XOD require "https://github.com/adafruit/Adafruit_Sensor"
#pragma XOD require "https://github.com/adafruit/Adafruit_BME280_Library"

//Include C++ libraries
{{#global}}
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>
{{/global}}

// Reserve memory to store an instance of the Adafruit_BMP280 class,
// and create the instance later:
struct State {
    uint8_t mem[sizeof(Adafruit_BME280)];
};

// Define our custom type as a pointer on the class instance.
using Type = Adafruit_BME280*;

{{ GENERATED_CODE }}

void evaluate(Context ctx) {
    // It should be evaluated only once on the first (setup) transaction
    if (!isSettingUp())
        return;

    auto state = getState(ctx);

    // Create a new object in the memory area reserved previously.
    Type bme = new (state->mem) Adafruit_BME280();

    if (!bme->begin(0x76)) {
      raiseError(ctx);
      return;
    }
    uint8_t mode = getValue<input_MODE>(ctx);
    uint8_t temp = getValue<input_OST>(ctx);
    uint8_t pressure = getValue<input_OSP>(ctx);
    uint8_t humidity = getValue<input_OSH>(ctx);
    uint8_t filter = getValue<input_FILT>(ctx);
    uint8_t standby = getValue<input_STDBY>(ctx);
    bme -> setSampling(mode, temp, pressure, humidity, filter, standby);
    emitValue<output_DEV>(ctx, bme);
}

bme280-device

emiliosancheza/bme280-sensor/bme280-device

C++ implementation