spi.h

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 *
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/**
 * @file    spi.h
 * @author  foxBMS Team
 * @date    2019-12-12 (date of creation)
 * @updated 2023-02-03 (date of last update)
 * @version v1.5.0
 * @ingroup DRIVERS
 * @prefix  SPI
 *
 * @brief   Headers for the driver for the SPI module.
 *
 */
 
#ifndef FOXBMS__SPI_H_
#define FOXBMS__SPI_H_
 
/*========== Includes =======================================================*/
#include "spi_cfg.h"
 
#include "fstd_types.h"
 
#include <stdint.h>
 
/*========== Macros and Definitions =========================================*/
 
/*========== Extern Constant and Variable Declarations ======================*/
 
/*========== Extern Function Prototypes =====================================*/
/**
 * @brief   Initializes the SPI module
 * @details First the low level initialization (using the HAL functions) is
 *          done.
 *          After that the chip select setup for the peripherals is configured.
*/
extern void SPI_Initialize(void);
 
/* INCLUDE MARKER FOR THE DOCUMENTATION; DO NOT MOVE spi-documentation-dummy-start-include */
/**
 * @brief   Sends a dummy byte to wake up the SPI interface.
 * @param   pSpiInterface pointer to SPI interface configuration
 * @param   delay delay to wait after dummy byte transfer
 * @return  status of the SPI transfer
 */
extern STD_RETURN_TYPE_e SPI_TransmitDummyByte(SPI_INTERFACE_CONFIG_s *pSpiInterface, uint32_t delay);
/* INCLUDE MARKER FOR THE DOCUMENTATION; DO NOT MOVE spi-documentation-dummy-stop-include */
 
/* INCLUDE MARKER FOR THE DOCUMENTATION; DO NOT MOVE spi-documentation-transmit-start-include */
/**
 * @brief   Transmits data on SPI without DMA.
 * @details This function can be used to send and receive data via SPI. SPI
 *          communication is performed in blocking mode and chip select is
 *          set/reset automatically.
 * @param   pSpiInterface pointer to SPI interface configuration
 * @param   pTxBuff pointer to data that is transmitted by the SPI interface
 * @param   frameLength number of bytes to be transmitted by the SPI interface
 * @return  status of the SPI transfer
 */
extern STD_RETURN_TYPE_e SPI_TransmitData(SPI_INTERFACE_CONFIG_s *pSpiInterface, uint16 *pTxBuff, uint32 frameLength);
/* INCLUDE MARKER FOR THE DOCUMENTATION; DO NOT MOVE spi-documentation-transmit-stop-include */
 
/* INCLUDE MARKER FOR THE DOCUMENTATION; DO NOT MOVE spi-documentation-transmit-receive-start-include */
/**
 * @brief   Transmits and receives data on SPI without DMA.
 * @details This function can be used to send and receive data via SPI. SPI
 *          communication is performed in blocking mode and chip select is
 *          set/reset automatically.
 * @param   pSpiInterface pointer to SPI interface configuration
 * @param   pTxBuff pointer to data that is transmitted by the SPI interface
 * @param   pRxBuff pointer to data that is received by the SPI interface
 * @param   frameLength number of bytes to be transmitted by the SPI interface
 * @return  status of the SPI transfer
 */
extern STD_RETURN_TYPE_e SPI_TransmitReceiveData(
    SPI_INTERFACE_CONFIG_s *pSpiInterface,
    uint16 *pTxBuff,
    uint16 *pRxBuff,
    uint32 frameLength);
/* INCLUDE MARKER FOR THE DOCUMENTATION; DO NOT MOVE spi-documentation-transmit-receive-stop-include */
 
/* INCLUDE MARKER FOR THE DOCUMENTATION; DO NOT MOVE spi-documentation-fram-start-include */
/**
 * @brief   Transmits and receives data on SPI without DMA, wrapper for FRAM
 * @details This function can be used to send and receive data via SPI. SPI
 *          communication is performed in blocking mode and chip select is
 *          set/reset automatically.
 *          It does not drive the Chip Select (neither hardware nor software)
 *          as this is done directly in the FRAM functions.
 * @param   pSpiInterface pointer to SPI interface configuration
 * @param   pTxBuff pointer to data that is transmitted by the SPI interface
 * @param   pRxBuff pointer to data that is received by the SPI interface
 * @param   frameLength number of bytes to be transmitted by the SPI interface
 * @return  status of the SPI transfer
 */
extern void SPI_FramTransmitReceiveData(
    SPI_INTERFACE_CONFIG_s *pSpiInterface,
    uint16 *pTxBuff,
    uint16 *pRxBuff,
    uint32 frameLength);
/* INCLUDE MARKER FOR THE DOCUMENTATION; DO NOT MOVE spi-documentation-fram-stop-include */
 
/* INCLUDE MARKER FOR THE DOCUMENTATION; DO NOT MOVE spi-documentation-transmit-receive-dma-start-include */
/**
 * @brief   Transmits and receives data on SPI with DMA.
 * @details This function can be used to send and receive data via SPI. SPI
 *          communication is performed in blocking mode and chip select is
 *          set/reset automatically..
 * @param   pSpiInterface pointer to SPI interface configuration
 * @param   pTxBuff pointer to data that is transmitted by the SPI interface
 * @param   pRxBuff pointer to data that is received by the SPI interface
 * @param   frameLength number of bytes to be transmitted by the SPI interface
 * @return  status of the SPI transfer
 */
extern STD_RETURN_TYPE_e SPI_TransmitReceiveDataDma(
    SPI_INTERFACE_CONFIG_s *pSpiInterface,
    uint16_t *pTxBuff,
    uint16_t *pRxBuff,
    uint32_t frameLength);
/* INCLUDE MARKER FOR THE DOCUMENTATION; DO NOT MOVE spi-documentation-transmit-receive-dma-stop-include */
 
/* INCLUDE MARKER FOR THE DOCUMENTATION; DO NOT MOVE spi-documentation-slave-receive-dma-start-include */
/**
 * @brief   Transmits and receives data on SPI with DMA.
 * @details This function can be used to send and receive data via SPI. SPI
 *          communication is performed in blocking mode and chip select is
 *          set/reset automatically..
 * @param   pSpiInterface pointer to SPI interface configuration
 * @param   pTxBuff pointer to data that is transmitted by the SPI interface
 * @param   pRxBuff pointer to data that is received by the SPI interface
 * @param   frameLength number of bytes to be transmitted by the SPI interface
 * @return  status of the SPI transfer
 */
extern STD_RETURN_TYPE_e SPI_SlaveSetReceiveDataDma(
    SPI_INTERFACE_CONFIG_s *pSpiInterface,
    uint16_t *pTxBuff,
    uint16_t *pRxBuff,
    uint32_t frameLength);
/* INCLUDE MARKER FOR THE DOCUMENTATION; DO NOT MOVE spi-documentation-slave-receive-dma-stop-include */
 
/**
 * @brief   Locks SPI interfaces.
 * @details This function is used to change the state of the SPI_busy_flags
 *          variable to "locked".
 * @param   spi  SPI interface to be locked (0-4 on the TMS570LC4357)
 * @return  #STD_OK if SPI interface could be locked, #STD_NOT_OK otherwise
 */
extern STD_RETURN_TYPE_e SPI_Lock(uint8_t spi);
 
/**
 * @brief   Unlocks SPI interfaces.
 * @details This function is used to change the state of the SPI_busy_flags
 *          variable to "unlocked".
 * @param   spi  SPI interface to be unlocked (0-4 on the TMS570LC4357)
 */
extern void SPI_Unlock(uint8_t spi);
 
/**
 * @brief   Sets the functional of a SPI pin
 * @details SPI pins in this HAL can have functional state SPI (for when it is
 *          controlled by the SPI hardware) and functional state GIO (for when
 *          it is controlled as a GIO pin).
 * @param[in,out]   pNode   handle of the SPI node that should be configured
 * @param[in]       bit     bit that should be manipulated, other pins remain
 *                          unchanged
 * @param[in]       hardwareControlled  Whether the bit should be hardware
 *                                      controlled (true) or not (false)
 */
extern void SPI_SetFunctional(spiBASE_t *pNode, enum spiPinSelect bit, bool hardwareControlled);
 
/**
 * @brief   Used to send last byte per SPI.
 * @details This function is called in the DMA Tx callback. It is used
 *          to send the last byte with CSHOLD = 0.
 * @param   spiIndex  SPI node in use
 */
extern void SPI_DmaSendLastByte(uint8_t spiIndex);
 
/**
 * @brief   Returns #STD_OK if the SPI interface can be used again
 * @details This function just checks for SPI_PENDING and groups SPI_READY and
 *          SPI_...
 * @param[in]   pNode   handle of the SPI node that should be checked
 * @returns     #STD_RETURN_TYPE_e indicating wether the interface is ok to be used.
 */
extern STD_RETURN_TYPE_e SPI_CheckInterfaceAvailable(spiBASE_t *pNode);
 
/**
 * @brief   Returns index of SPI node
 * @param[in]   pNode   handle of the SPI node that should be checked
 * @returns     index of SPI node
 */
extern uint8_t SPI_GetSpiIndex(spiBASE_t *pNode);
 
/*========== Externalized Static Functions Prototypes (Unit Test) ===========*/
#ifdef UNITY_UNIT_TEST
extern void TEST_SPI_InitializeChipSelects(void);
extern uint8_t TEST_SPI_GetChipSelectPin(SPI_CHIP_SELECT_TYPE_e csType, uint32_t csPin);
extern uint8_t TEST_SPI_GetHardwareChipSelectPin(uint8_t csPin);
#endif
 
#endif /* FOXBMS__SPI_H_ */