Version 1.0.20

This release:

• Adds the method useStaleData
  • useStaleData(true) will cause getCO2, getTemperature and getHumidity to output the previous (stale) reading instead of zero.
  • Backward compatibility is maintained. By default, zeros are output instead of stale data.

Version 1.0.19

This release:

• Fixes a mistake in getTemperatureOffset

Compile support for ESP8266

v1.0.18

Update library.properties

Add isConnected(). Add test for valid measurement before returning value.

v1.0.17

Update library.properties

setTemperatureOffset only accepts positive values

v1.0.16

Update library.properties

Fix for negative getTemperatureOffset() values

v1.0.15

Update library.properties

Add getMeasurementInterval() helper function

v1.0.14

Update library.properties

Version 1.0.13

This release:

• Adds the 3ms delay, specified in the Sensirion interface description, before reading the sensor data - thank you @yamamaya #24

Do not enable Auto calibration at begin()

Sets auto-calibrate default to false at .begin() stage. Auto-calibrate takes 7 days with constant power. We should avoid starting this unless the user specifically intends it. Example 4 updated to show how to enable cal.

Version 1.0.11

This release:

• incorporates some of the suggestions and corrections from paulvha's version of the library
  • .begin can now be called without starting measurements
  • conversion from int32_t to float no longer uses memcpy
• .begin checks the firmware version and only returns true if the CRC check is valid
• adds .enableDebugging
• adds a new example to demonstrate the new getSetting functions