Environmental Sensing Service¶
The Environmental Sensing Service (ESS) implements access to the BME680 environmental sensor of the card10.
If BSEC is enabled the following additional estimates are available:
Indoor air quality (IAQ estimate
Equivalent CO2 (eCO2) estimate
Please refer to
bme680 for more information about BSEC.
If notifcations are enabled a measurement of all values is performed every 3 seconds. For each measurement a notification is sent for the characteristics which have notifications enabled.
A measurement can also be triggered by reading from a characteristic. A measurement takes roughly 200 ms. A notifciation will be sent to all characteristics which have notifications enabled except the one which was used to trigger the measurement.
If BSEC is enabled, reading a characteristic will not trigger a new measurement.
This service will be available in version v1.17.
2A6Eread and notify
2A6Fread and notify
2A6Dread and notify
Indoor air quality (IAQ) characteristic:
422302f1-2342-2342-2342-234223422342read and notify
16 bit little endian value representing the measured temperature.
Unit: 0.01 deg C
16 bit little endian value representing the measured relative humidity.
32 bit little endian value representing the measured pressure.
Unit: 0.1 Pa (0.001 hPa)