Not able to get the BME688 up and running

[Biswajeet]

Hi, 

I am not able to get the BME688 up and running and facing issues and need your help. 

Here are the list of things I have done so far following the "BST-BME688-Integration-Guide-AN008-06.pdf" document. 

1. Took following files from "BSEC_2.0.6.1_Generic_Release_04302021" repo : bme68x.c, bme68x.h, bme68x_defs.h, bsec_datatypes.h, bsec_interface.h, bsec_serialized_configurations_selectivity.c, bsec_serialized_configurations_selectivity.h
2. As our source code is written in C and in the above repo has "bsec.cpp" file present so I had to convert this file from .cpp to .c. (Attached)
3. Execution sequence : 
   1. "bsec_init()" is successfull and able to read the BSEC version information.
   2. "bsec_set_configuration" returns -34 (BSEC_E_CONFIG_VERSIONMISMATCH) insted of 0(BSEC_OK). 
   3. "bsec_update_subscription" returns 0(BSEC_OK). 
   4. "bme68x_init" returns 0(BSEC_OK).
   5. In a infinite loop, executing "read_sensor_and_process_data" or "Bsec::run"(in bsec.cpp). 
      1. Inside "set_bme68x_parallel_mode" is called and "bme68x_set_heatr_conf" functions returns -2 (BSEC_E_DOSTEPS_VALUELIMITS) after which it exits the function and runs in a loop. 

Can you please let me know where is the issue ? 

I have attached the converted c file and logs for your reference. 

Note: The library file was shared here : https://community.bosch-sensortec.com/t5/MEMS-sensors-forum/BME688-library-linking-fails-in-STM32MP1...

[BSTRobin]

Hi Biswajeet,

Currently BSEC2 code was written by C++ language, let's check when we could provide BSEC2 C code.

[Biswajeet]

Hi BSTRobin, 

Is the issues due to the converted c source from c++ ?

What about the errors  "BSEC_E_CONFIG_VERSIONMISMATCH" and "BSEC_E_DOSTEPS_VALUELIMITS", are these errors due to issues in my configuration or the C source file ?

[Biswajeet]

Hi BSTRobin, 

Any update on this ?

[BSTRobin]

Hi Biswajeet,

Sorry for the inconvience.

It is on going to checking when we could release the C code. It needs some time to integrate it and verity it, we will let you know if the software is ready.