uint8_t dummy = 0x00, dataReg, dataReg1, dataReg2;

GPIOE->BSRRH |= LT2433_CS; // set (CS) low
for (uint32_t i = 0; i < 5000; i++ ) //bit of delay
SPI2->DR = dummy; //start sending
while( SPI2->SR & SPI_I2S_FLAG_BSY ); // wait until SPI is not busy anymore
dataReg = SPI2->DR; //read data
SPI2->DR = dummy; //start sending
while( SPI2->SR & SPI_I2S_FLAG_BSY ); // wait until SPI is not busy anymore
dataReg1 = SPI2->DR; //read data
SPI2->DR = dummy; //start sending
while( SPI2->SR & SPI_I2S_FLAG_BSY ); // wait until SPI is not busy anymore
dataReg2 = SPI2->DR; //read data
GPIOE->BSRRL |= LT2433_CS; // set (CS) high
return dataReg;