BSEC_OUTPUT_GAS_ESTIMATE_x is always 100%

[steven_bsec]

Hi @BSTRobin 

When I train Coofee or Air,

1. Class A is Air, Class B is Coffee, BSEC_OUTPUT_GAS_ESTIMATE_2 is always 100%. 

2. Class A is Coffee, Class B is Air, BSEC_OUTPUT_GAS_ESTIMATE_1 is always 100%. 

I try replace with another sensor , the result is tha same.

[BSTRobin]

Hi steven_bsec,

Are you testing the config file you trained in a coffee environment?

[steven_bsec]

Yes , I followed the video to test config file exactly

when I detect coffee, it is OK. But when I detect normal air , it don't work well , and result is not normal air always, and sometimes is coffee.

I think that the config file is right, bucause it work well in bme688_development_kit. (Bosch-BSEC2-Library-master\examples\x8_board_examples\basic_config_state)

There is only one sensor in my project, and 8 sensors in bme688_development_kit. Does it matter?

Can you share me air-detection demo for STM32?

And I observe gas_index is 0,1,2,3,4,5,6,7,8,9 cyclically in bme688_development_kit, but in my project gas_index is 1,2,3,5,7,9 or 1,2,4,6,8,9 or  other order . why?

[steven_bsec]

Yes, I test  the config file following the video

I think config file is OK. It work well in bme688_development_kit, but don't work in my project.

and I observed that gas index is 0,1,2,3,4,5,6,7,8,9 cycle in bme688_development_kit, but in my project, gas index is 1,2,4,6,8,9, or 1,2,3,5,7 or other order.Why ?

[BSTRobin]

Hi steven_bsec,

I uploaded an example code on STM32 that enables the following macro definition in user_define.h.

#define BME68X_OUTPUT_GAS_ESTIMATE
//#define BME68X_OUTPUT_GAS_IAQ

This example demonstrates the detection of marker pen and normal air. It runs well and I hope it will be useful to you.