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    BME688 Development board Communication protocol

    Phatta
    Member

    Re: BME688 Development board Communication protocol

    Also If there is a schematic of the BME688 board available? Would have made things much simpler to understand. 

    Wenator04
    New Poster

    Re: BME688 Development board Communication protocol

    Hi kgoveas,

    I also met some difficulties on BME688 Development board Communication protocol recently. And it's quite helpful to see this reply.

    But I am still struggling with the issue after I got the details. Here are my codes. Would you mind giving me more hints please? 

    Thank you!

    #include "Wire.h"
    
    #define SDA 23
    #define SCL 22
    
    void setup(void)
    {
      Serial.begin(115200);
      Wire.begin(SDA, SCL);
      
      foodSensor.begin(BME68X_I2C_ADDR_HIGH, Wire);

     

     

    electro_bloom
    New Poster

    Re: BME688 Development board Communication protocol

    Hello all ,

    I would like to know if anyone was able to communicate with the Bosch BME688 kit sucessfully with custom built firmware ? I would like to know which pins of I2C expanders are used as CS select for interfacing each sensor with the controller.

    kgoveas
    Community Moderator

    Re: BME688 Development board Communication protocol

    Hi electro_bloom,

    Have you already seen the samples from Github? 

    Bosch-BSEC2-Library/examples/x8_board_examples/basic at master · BoschSensortec/Bosch-BSEC2-Library ...

    There is a mini library called CommMux Bosch-BSEC2-Library/commMux.cpp at master · BoschSensortec/Bosch-BSEC2-Library (github.com) that abstracts the use of the IO expander to control the 8 sensors.

    The use of the library can be seen here : Bosch-BSEC2-Library/basic.ino at master · BoschSensortec/Bosch-BSEC2-Library (github.com)

    Hope that helps,

    Regards,

    kgoveas

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