BME688 gas resistance registers

[jk0010]

I am using the BME688. When I try to read out data in both parallel and forced mode I see the gas resistance raw value is not changing.

gas_r_msb = 255 and gas_r_lsb = 253. So the raw value is 1023. Most of the time this is the value read from the registers, any idea as how to solve this? I checked the new data, gas valid, and heat stab bits before printing my data which are all 1.

Is there some kind of timing that is off resulting in the registers being 255 and 253?

[BSTRobin · Accepted solution]

Hi jk0010,

If you have not used the official driver code for BME688, we recommend that you directly use the official BME688 sensor API and examples published on Github(https://github.com/boschsensortec/BME68x_SensorAPI/tree/master/examples), as they have been verified and are available.
You can use official examples, and  read the data of BME688 again.