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    BMI270 Config File

    mullercw
    Member

    Re: BMI270 Config File

    I'm using the SPI bus to access the BMI270. The device can reply to the DEVICE_ID register 0 with 0x24. I can monitor the SPI bus and it seems ok and other devices on the same bus function. When I try toload the config_file array from the Github into the BMI270_REG__INIT_DATA register the INTERNAL_STATUS show "Not Init". The INTERNAL_STATUS shows 0x00 (Not Init) and when I read back from the BMI270_REG__INIT_DATA, it is all the same random value for every register (2B, 2B, 2B.. or 1F, 1F, 1F...).

    I see that I have to load this 8k file to even get basic accelerometer data. 

    Does this basic procedure below seem correct?

    ----------------------------------

    //load file to configure
    bmi270_writeregister(dev, BMI270_REG__INIT_CTRL, 0);

    //set Address to 0 
    bmi270_writeregister(dev, BMI270_REG__INIT_ADDR_0, 0);
    bmi270_writeregister(dev, BMI270_REG__INIT_ADDR_1, 0);

    //load array file

    bmi270_write(dev, BMI270_REG__INIT_DATA, (uint8_t*)bmi270_config_file, sizeof(bmi270_config_file));

    //Write init CTRL to 1 showing config loaded.
    bmi270_writeregister(dev, BMI270_REG__INIT_CTRL, 1);

    vTaskDelay(300);
    bmi270_readregister(dev, BMI270_REG__INTERNAL_STATUS, &val);

    ----------------------------------
    Can I change bmi270_config_file to {1,2,3,4,5,6,7,8};, load it and should I be able to read this 1-8 back as a test to see if I can write to the device? When I do it, I get the same random data, like this register is locked or something.

    The INTERNAL_STATUS shows 00, not 02 which is failed to load. What is the difference in status?

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