STM32 SPI Konfiguration richtig? (CPOL..)

[STM32user (Gast)]

Hallo,

wenn es in einem Sensor Datenblatt zu der SPI Anbindung heißt:

Data format: 16 data bits

Frame Sync: None

Module-Selection: SS-Pin

Clock Edge Select: Serial output data changes on transition from idle
to active clock state

SPI Data Input Sample Phase: Data sampled on transition from active to 
idle
clock state

Clock Polarity: Idle state is high level, active is low level.


entspricht dies dann meiner Konfiguration?
Das Problem ist nämlich das SDO (MISO) nicht high ist im idle state.

SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
    SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b;
    SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
    SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
    SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
    SPI_InitStructure.SPI_BaudRatePrescaler = baudrateprescaler; //SPI_BaudRatePrescaler_8;
    SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
    SPI_InitStructure.SPI_CRCPolynomial = 7;
    SPI_InitStructure.SPI_Mode = SPI_Mode_Master;

  SPI_Init(SPIx, &SPI_InitStructure);

  /* Configure the RX FIFO Threshold */
  /* Enable SPI  */
  SPI_Cmd(SPIx, ENABLE);

  /*Config SPI to generate Interrupts on Tx buffer empty and Rx buffer not empty*/
  SPI_I2S_ITConfig(SPIx, SPI_I2S_IT_TXE|SPI_I2S_IT_RXNE, DISABLE);

Vielen Dank


Anhang: Ist-Zustand und der Soll-Zustand (gezoomt im Analyzer)