BME688: Chip ID and operation

[huytyskland]

Hello everyone,

Currently, I am working with the sensor BME 688 with the board Nucleo-WL55JC1. 

I am reading and testing the code with the self-test (https://github.com/BoschSensortec/BME68x-Sensor-API/blob/master/examples/self_test/self_test.c) and the code did not work. I tracked the code and in the file bme68x.c line 156, the chip id was not equal to the constant BME68X_CHIP_ID which led to the error Device Not Found.

I have 2 assumptions:

• There was something happened with the chip or the code (I only changed the I2C read and write function - attached later). For this I am not sure where to check.
• The  sensor BME688 did not work properly (did not turn on, hardware error,...). How can I check if this assumption is correct.

I changed the code of I2C read and write based on the attached folder of this reference (In the comment) . Basically, I used the

HAL_I2C_Master_Transmit and HAL_I2C_Master_Receive. I also commented out the SPI related functions.

Does anyone have any idea how to clarify my 2 assumptions?

Thank you, Huy Nguyen.

[BSTRobin]

Hi huytyskland,

If the sensor is working, the I2C waveform will receive an ACK signal.
Did you design BME688 hardware yourself?

[huytyskland]

Hello,

I used this module: https://pi3g.com/products/bme688-breakout-board/ with the BME688 on it. I used the I2C pin on the module to connect it with the Nucleo board and I carefully checked the connection pin multiple times.

[BSTRobin]

Hi huytyskland,

You could capture actual I2C waveform and check it.

[huytyskland]

Hello BSTRobin,

Thank you for your suggestion. I will do that.

[BSTRobin]

Hi huytyskland,

Did it work on your side?