Hi HUYNHIEN,
I mean the bme68x.c file you used.
You could download BSEC 2.x Software from https://www.bosch-sensortec.com/software-tools/software/bme688-software/ and test "BSEC_2.0.6.1_Generic_Release_04302021\examples\bsec2\examples\basic_config_state". If you also have same temperature difference, then we will check it.
... View more