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    Use 9K memory for FIFO on LSM6DSO for storing accelerometer and gyroscope data

    jijuchacko
    New Poster

    Use 9K memory for FIFO on LSM6DSO for storing accelerometer and gyroscope data

    Hi,

    I am using LSM6DSOx accelerometer sensor. I am using FIFO to read the data. With 100Hz ODR, I get an interrupt in every 10s. This help me to put the system in sleep mode until data is available.

    In the data sheet I see there is 9K memory available to store accelerometer and gyroscope data but I am unable to use it. Even after enabling compression, I can see only 3K getting used. 

    Please guide me how can I use the extra memory on board.

     

    Below is the accelerometer configurations that I am using currently.

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

    /* Restore default configuration */
    lsm6dsox_reset_set(&dev_ctx, PROPERTY_ENABLE);

    ACCL_DEBUG("Sent reset command\r\n");
    do {
    lsm6dsox_reset_get(&dev_ctx, &rst);
    } while (rst);

    /* Disable I3C interface */
    lsm6dsox_i3c_disable_set(&dev_ctx, LSM6DSOX_I3C_DISABLE);
    /* Enable Block Data Update */
    lsm6dsox_block_data_update_set(&dev_ctx, PROPERTY_ENABLE);
    /* Set full scale */
    lsm6dsox_xl_full_scale_set(&dev_ctx, LSM6DSOX_2g);
    lsm6dsox_xl_data_rate_set(&dev_ctx, LSM6DSOX_XL_ODR_OFF);
    /*
    * Set FIFO watermark (number of unread sensor data TAG + 6 bytes
    * stored in FIFO) to 10 samples
    */
    //lsm6dsox_fifo_watermark_set(&dev_ctx, 0x1FF);
    /* Set FIFO batch XL/Gyro ODR to 12.5Hz */

    lsm6dsox_fifo_xl_batch_set(&dev_ctx, LSM6DSOX_XL_BATCHED_AT_104Hz);
    /* Set FIFO mode to Stream mode (aka Continuous Mode) */
    lsm6dsox_fifo_mode_set(&dev_ctx, LSM6DSOX_STREAM_MODE);
    /* Enable drdy 75 μs pulse: uncomment if interrupt must be pulsed */
    /* Uncomment if interrupt generation on Free Fall INT1 pin */
    lsm6dsox_pin_int1_route_get(&dev_ctx, &int1_route);
    int1_route.fifo_th = PROPERTY_ENABLE;
    int1_route.fifo_full = PROPERTY_ENABLE;
    int1_route.fifo_ovr = PROPERTY_ENABLE;
    int1_route.fifo_bdr = PROPERTY_ENABLE;
    lsm6dsox_pin_int1_route_set(&dev_ctx, int1_route);
    /* Uncomment if interrupt generation on Free Fall INT2 pin */
    //lsm6dsox_pin_int2_route_get(&dev_ctx, &int2_route);
    //int2_route.reg.int2_ctrl.int2_fifo_th = PROPERTY_ENABLE;
    //lsm6dsox_pin_int2_route_set(&dev_ctx, &int2_route);
    /* Set Output Data Rate */
    lsm6dsox_xl_data_rate_set(&dev_ctx, LSM6DSOX_XL_ODR_104Hz);

    lsm6dsox_compression_algo_init_set(&dev_ctx, 1);
    lsm6dsox_compression_algo_set(&dev_ctx, LSM6DSOX_CMP_ALWAYS);

    lsm6dsox_emb_sens_t emb_sens;
    emb_sens.fifo_compr = PROPERTY_ENABLE;
    lsm6dsox_embedded_sens_set(&dev_ctx, &emb_sens);

    Tags (2)
    1 REPLY 1
    BSTRobin
    Community Moderator

    Re: Use 9K memory for FIFO on LSM6DSO for storing accelerometer and gyroscope data

    Hello jijuchacko,

    This is Bosch, you could see our products from https://www.bosch-sensortec.com/products

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