HAL_SPI_TransmitReceive(&hspi, txData, rxData, 5, HAL_MAX_DELAY);这其中的hspi需要传入值吗

HAL_SPI_TransmitReceive is a function in the STM32 HAL library that allows the user to transmit and receive data over an SPI (Serial Peripheral Interface) bus. It takes in the following parameters:

- SPI_HandleTypeDef *hspi: A handle to the SPI bus that the user wants to use for transmission and reception.
- uint8_t *pTxData: A pointer to the data buffer that contains the data to be transmitted.
- uint8_t *pRxData: A pointer to the buffer that will hold the received data.
- uint16_t Size: The number of bytes to be transmitted and received.

The function sends the data in the pTxData buffer over the SPI bus and simultaneously receives data into the pRxData buffer. The function blocks until all the data has been transmitted and received.

Here is an example of how to use HAL_SPI_TransmitReceive to send and receive data over an SPI bus:

uint8_t txData[2] = {0xAB, 0xCD};
uint8_t rxData[2] = {0};
HAL_SPI_TransmitReceive(&hspi1, txData, rxData, 2);

In this example, the function transmits the data in txData (0xAB and 0xCD) over the SPI bus and receives data into rxData. The function will block until both the transmission and reception are complete.