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    Minimum instructions to have BMX055 produce data at 2 kHz

    Minimum instructions to have BMX055 produce data at 2 kHz

    JamesMeech
    Member

    Hello I am attempting to set up them BMX055 such that it produces unfiltered data from the +/- 2g range at 2 kHz over I2C. I would also like to avoid the device periodically going to sleep. I am running code that I believe should achieve this purpose but I only get data at around 406 Hz. It is not clear to me how to achieve the 2 kHz data rate I want by doing this. Currently I am selecting the 2g range by writing 0x03 to register 0x0F and then writing 0xC0 to register 0x13 to select the 2 kHz data rate. Are there any other registers I should set ? 

    I am using an arduino MKR1000 to communicate with the sensor over I2C

    1 REPLY 1

    Vincent
    Community Moderator
    Community Moderator

    BMX055 acceleration part is worked under 2g range and 2KHz ODR (0x0F in register 0x10) when power on. 

    So if you don't do anything after power on, you already can get the 2g range and 2KHz data. 

    Then you need unfilter data, you just set 0x80 into register 0x13.  ODR is still 2KHz but you will get high noise because it is unfilter data.

    THere is no other register needed for this

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