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    About bmx160 struct SPI READ and WRITE FUNCTION

    zx556605
    New Poster

    About bmx160 struct SPI READ and WRITE FUNCTION

    Hello everyone!!!

    I use Nuvoton M451 MCU with BMX160,
    The communication protocol uses SPI,
    I will read the BMX160 CHIP ID but cannot succeed
    rslt =-3(DEVICE NOT FOUND)
    Re-read CODE several times
    It is found that the Read and write functions in the struct may not be well written
    CHIPID cannot be read normally

    -----------------------------------------------------------------------------------
    struct bmi160_dev bmi;
    bmi.id = 0;
    bmi.interface = BMI160_SPI_INTF;
    bmi.read = (bmi160_com_fptr_t)user_spi_read;
    bmi.write = (bmi160_com_fptr_t)user_spi_write;
    bmi.delay_ms = (bmi160_delay_fptr_t) Delayus;
    -----------------------------------------------------------------------------------
    I would like to ask!!!
    bmi.read = (bmi160_com_fptr_t)user_spi_read;
    bmi.write = (bmi160_com_fptr_t)user_spi_write;
    The workflow of these two functions and how to write

    3 REPLIES 3
    Vincent
    Community Moderator

    Re: About bmx160 struct SPI READ and WRITE FUNCTION

    You need to link / map the SPI read / write function in your MCU complier to those funciton.

    In the API,  they are just dumy function which need to be map by user.

    zx556605
    New Poster

    Re: About bmx160 struct SPI READ and WRITE FUNCTION

    HI Vincent
    Understand~~
    So we also need to write the function of MCU by ourselves to use for FUNCTION
    So how do I give these functions to FUNCTION?
    Is there any reference to this FUNCTION design flow and examples!!

    Thank you

    Vincent
    Community Moderator

    Re: About bmx160 struct SPI READ and WRITE FUNCTION

    You can just rewrite / replace your SPI read and write function in the API. 

    It is the generic SPI function on your MCU platform.

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