MAX31856 SPI Communication problem

[Caan]

Trying to communicate MAX31856 With STM32F401
STM32CUBEIDE 1.15.1
ADAFRUIT MAX31856 Breakout Board

uint8_t data[2];
uint8_t addr_data[2]={0x04,0x00};

 while (1)
  {
             HAL_GPIO_WritePin(GPIOA, GPIO_PIN_4, GPIO_PIN_RESET);
		 HAL_Delay(10);
	     HAL_SPI_TransmitReceive(&hspi1,&addr_data,&data,2, HAL_MAX_DELAY);
	     HAL_GPIO_WritePin(GPIOA, GPIO_PIN_4, GPIO_PIN_SET);
                HAL_Delay(10);
  }

}

Trying to Read Register 0x04 (Default Value = 0xC0)

But Getting Random 0x00 or 0x80 Values (Verifying with Logic Analyzer)

[Andrew Neil]

Correct SPI mode?

[Caan]

According to the datasheet the SPI Can be run in SPI 0 Mode (SCK POL 0 or 1)

[Andrew Neil]

and is your SPI configured to that?

[AScha.3]

Seems you have to set:

[Caan · Accepted solution]

Yes, but Right Now I tried to Chang the config to

 hspi1.Init.CLKPolarity = SPI_POLARITY_LOW; POL is Low

 hspi1.Init.CLKPhase = SPI_PHASE_2EDGE; Phase Changed to 2 Edges

And I am Able to get the Data Now.

Thanks @Andrew Neil