HAL SPI cannot handle LSB data?

[KYou.1]

I setup SPI using CubeMX and set First Bit as LSB First as described in the datasheet.

I thought setting this will handle LSB data by itself however it is not working as expected.

Below code only work with _SPI_HARDWARE_LSB defined which means I have to manually realign all the data in the buffer when transmitting through HAL_SPI function.

Is this is known issue or is how LSB suppose to be handled?

void spi_rw(uint8_t* data, uint8_t count) {
    HAL_GPIO_WritePin(RFID_SS_GPIO_Port, RFID_SS_Pin, GPIO_PIN_RESET);
    HAL_Delay(1);
#ifndef _SPI_HARDWARE_LSB
    for (uint8_t i = 0; i < count; i++) {
        data[i] = reverse_bit(data[i]);
    }
    HAL_SPI_TransmitReceive(&hspi1, data, data, count, _SPI_TIMEOUT);
    for (uint8_t i = 0; i < count; i++) {
        data[i] = reverse_bit(data[i]);
    }
#else
    HAL_SPI_TransmitReceive(&hspi1, data, data, count, _SPI_TIMEOUT);
#endif
    HAL_Delay(1);
    HAL_GPIO_WritePin(RFID_SS_GPIO_Port, RFID_SS_Pin, GPIO_PIN_SET);
}
 
uint8_t reverse_bit(uint8_t num) {
    uint8_t result = 0;
    for (uint8_t i = 0; i < 8; i++) {
        result <<= 1;
        result += (num & 1);
        num >>= 1;
    }
    return result;
}

[TDK]

The hardware probably works. Put together a simpler example that strips possibly faulty logic from your program. Verify that SPIx_CR1_LSBFIRST is as expected.