bsec_do_steps() doesn't return anything.

[nicatali007]

Hello,

I want to build an application with a BME688 sensor, BSEC library, and Fudan FM33LG048 ARM Cortex M0 microcontroller. I am using BSEC_2.4.0.0_ExampleCode. Everything seems working except I cannot get anything in return from bsec_do_steps, it is stuck on that line and I cannot solve it.

bsec_status = bsec_do_steps(bsec_inputs, num_bsec_inputs, bsec_outputs, &num_bsec_outputs);

What could cause this issues?
Best Regards
Nijat Aliyev

bme68x_bsec_update_subscription functionprocessData function

[BSTRobin]

Hi nicatali007,

Did you correctly migrate example code from https://community.bosch-sensortec.com/t5/MEMS-sensors-forum/BME688-BSEC-library-for-Fudan-FM33LG048-... to your platform? You can record the print information for check.

[nicatali007]

Hi BSTRobin,

Something weird happened. The debug wasn't printing anything in keil debug printf viewer. While trying to solve that problem I was able to get bsec_ok from bsec_do_steps() function. However, I didn't understand how. Now, the code seems working but only when I put some breakpoints in some lines such as get_data() line. However, without these breakpoints it still gets stuck.

[nicatali007]

Hi BSTRobin,

When I have a delay of 2 seconds (2000 ms) before  bme68x_get_data(); function, I get nFields = 1 (and I get THP data, gas resistance data, and everything is working). However, I get nFields = 0 (meaning that no new data), when I comment the delay function or lower it to 1500 milliseconds and below. 

What can be the reason for this? Do you know how I can solve it? (screenshots are attached below)
Best Regards
Nijat Aliyev

[BSTRobin · Accepted solution]

Hi nicatali007,

Here are two suggestions:
1. Increase the stack size in your software project;
2. Strictly refer to the example code on STM32 we provided previously.