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Visitor II
September 8, 2019
Solved

IIS328DQ WHO_AM_I return not 0x32

  • September 8, 2019
  • 2 replies
  • 1146 views

Hi, I am using IIS328DQ with SPI communication. When I Check register WHO_AM_I, it was return 0x64. It is wrong because in datasheet it mention must be 0x32. So what is the solution?

Thanks​

    This topic has been closed for replies.
    Best answer by Tesla DeLorean

    Check the clock/data phase settings, you are reading with a bit shift.​

    2 replies

    Graduate II
    September 8, 2019

    Check the clock/data phase settings, you are reading with a bit shift.​

    mal hAuthor
    Visitor II
    September 8, 2019

    i think my configuration for SPI already match with spec in Datasheet sensor.

    here my SPI configuration

     hspi1.Instance = SPI1;

     hspi1.Init.Mode = SPI_MODE_MASTER;

     hspi1.Init.Direction = SPI_DIRECTION_2LINES;

     hspi1.Init.DataSize = SPI_DATASIZE_8BIT;

     hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;

     hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;

     hspi1.Init.NSS = SPI_NSS_SOFT;

     hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;

     hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;

     hspi1.Init.TIMode = SPI_TIMODE_DISABLE;

     hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;

     hspi1.Init.CRCPolynomial = 0x0;

     hspi1.Init.NSSPMode = SPI_NSS_PULSE_ENABLE;

     hspi1.Init.NSSPolarity = SPI_NSS_POLARITY_LOW;

     hspi1.Init.FifoThreshold = SPI_FIFO_THRESHOLD_01DATA;

     hspi1.Init.TxCRCInitializationPattern = SPI_CRC_INITIALIZATION_ALL_ZERO_PATTERN;

     hspi1.Init.RxCRCInitializationPattern = SPI_CRC_INITIALIZATION_ALL_ZERO_PATTERN;

     hspi1.Init.MasterSSIdleness = SPI_MASTER_SS_IDLENESS_00CYCLE;

     hspi1.Init.MasterInterDataIdleness = SPI_MASTER_INTERDATA_IDLENESS_00CYCLE;

     hspi1.Init.MasterReceiverAutoSusp = SPI_MASTER_RX_AUTOSUSP_DISABLE;

     hspi1.Init.MasterKeepIOState = SPI_MASTER_KEEP_IO_STATE_DISABLE;

     hspi1.Init.IOSwap = SPI_IO_SWAP_DISABLE;

    any suggestion?

    Thanks

    Visitor II
    September 11, 2019

    HEY Muhammad , can you share your code on how you read