Hi, I’m having some odd problems with I2C sensors that I’m trying to get to the bottom of. Generally communication with the HTS221 on our board works fine, but in a small number of locations, we see the readings go haywire (over 100 percent humidity, over 100 degrees C). The sensor is still responding correctly with WHO_AM_I and calibraiton information requests, but the actual readings are a mess. Rebooting the sensor and/or the electron does not resolve the problem. Only a full power down (battery unplugged as well) will restore the system to valid temperatures and humidities.
I had been assuming that the problem is with the board or the HTS221, but I recently saw a different I2C device fail similarly.
Obviously, it could still be the board, but I’m wondering if it’s possible that something on the Electron is getting scrambled to the point where a full power down is required to restore it. Is that even a possibility I should be investigating?