Once the BME280 is up and running and providing readings, If it is disconnected from the I2C bus the readings are frozen at their last value. When it is reconnected again - The values are still frozen. I’m using the Sparkfun Qwiic BME280 module with the Sparkfun BME280 library for Arduino. ReadAll…

I’m not sure what I was doing wrong before but now if I restore BME280_CTRL_HUMIDITY_REG and BME280_CTRL_MEAS_REG operation of the BME280 continues with correct values. I’ll edit the original post to reflect this way of recovering from sensor disconnect.

Reconnect BME280 on the fly (Arduino)

Sensors Environmental

YellowDog January 27, 2025, 1:25pm 2

Yeah, don’t do that. I2C devices are not hot swappable.

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Reconnect BME280 on the fly (Arduino)

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