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    BMA456 intf_ptr

    BMA456 intf_ptr

    KnightHeron
    New Poster

    Hi, I am trying to write a driver to communicate to the BMA456 from Cypress's CYBLE 212006-01 through SPI. I have been using your API provided here: 

    https://github.com/BoschSensortec/BMA456-Sensor-API

    I am writing the bus_read and bus_write functions, and I keep seeing dev-> intf_ptr. Do I need to initialize this pointer to something? I am just confused as to what this pointer should be doing. I know it is part of the device struct, but I do not see any examples using this pointer. 

    This line of code is from bma4.c :   dev->intf_rslt = dev->bus_write(addr, data, len, dev->intf_ptr);

    https://github.com/BoschSensortec/BMA456-Sensor-API/blob/master/bma4.c

    Any help on this would be great, thank you. 

    2 REPLIES 2

    Minhwan
    Community Moderator
    Community Moderator

    Hello, 

     

    There is some example code as below generic folder. 

    https://github.com/BoschSensortec/BMA456-Sensor-API/blob/master/examples/bma456/generic/acceleromete...

    Regarding intf, please check bma4_interface_selection function in bma4_common.c. 

    https://github.com/BoschSensortec/BMA456-Sensor-API/blob/master/examples/bma456/generic/bma4_common....

    Thanks 🙂 

    Thank you! common.c has helped

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