init
wayland/bme280-barometer/init
Initialize bme280-device.
init
@/init
Initialize bme280-device.
DEV@/bme280-device
A bme280-device.
I2Cxod/i2c/i2c
I²C bus.
ADDRbyte
I²C address (default = 77h).
MODEbyte
Operating mode for the sensor. Options: sleep = 00h, 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: 0.5 ms = 00h, 10 ms = 06h, 20 ms = 07h, 62.5 ms = 01h, 125 ms = 02h, 250 ms = 03h, 500 ms = 04h, 1000 ms = 05h.
INITpulse
Initialize sensor.
OKpulse
Pulse on successful initialization.
C++ implementation
#pragma XOD evaluate_on_pin disable
#pragma XOD evaluate_on_pin enable input_INIT
node {
void evaluate(Context ctx) {
// The node responds only if there is an input pulse
if (!isInputDirty<input_INIT>(ctx))
return;
auto sensor = getValue<input_DEV>(ctx);
auto wire = getValue<input_I2C>(ctx);
uint8_t i2c_addr = getValue<input_ADDR>(ctx);
if (!sensor->begin(i2c_addr, wire)) {
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);
sensor -> setSampling(mode, temp, pressure, humidity, filter, standby);
emitValue<output_OK>(ctx, 1);
}
}