spi.h

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 *
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/**
 * @file    spi.h
 * @author  foxBMS Team
 * @date    2019-12-12 (date of creation)
 * @updated 2021-06-16 (date of last update)
 * @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"
 
/*========== Macros and Definitions =========================================*/
 
/*========== Extern Constant and Variable Declarations ======================*/
 
/*========== Extern Function Prototypes =====================================*/
 
/**
 * @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);
 
/**
 * @brief   Sends data on SPI without DMA, with wake-up byte.
 *
 * It calls SPI_SendDummyByte() to wake-up the SPI interface.
 *
 * @param   pSpiInterface pointer to SPI interface configuration
 * @param   delay delay to wait after dummy byte transfer
 * @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_TransmitDataWithDummy(
    SPI_INTERFACE_CONFIG_s *pSpiInterface,
    uint32_t delay,
    uint16_t *pTxBuff,
    uint32_t frameLength);
 
/**
 * @brief   Sends data on SPI without DMA.
 *
 * @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_t *pTxBuff,
    uint32_t frameLength);
 
/**
 * @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);
 
/**
 * @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 but setting/resetting
 *          chip select and locking of the peripheral is not handled by this
 *          function. This must be ensured by the caller.
 *
 * @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_DirectlyTransmitReceiveData(
    SPI_INTERFACE_CONFIG_s *pSpiInterface,
    uint16 *pTxBuff,
    uint16 *pRxBuff,
    uint32 frameLength);
 
/**
 * @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);
 
/**
 * @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. A dummy is sent first.
 * @param   pSpiInterface pointer to SPI interface configuration
 * @param   delay delay to wait after dummy byte transfer
 * @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_TransmitReceiveDataWithDummyDma(
    SPI_INTERFACE_CONFIG_s *pSpiInterface,
    uint32_t delay,
    uint16_t *pTxBuff,
    uint16_t *pRxBuff,
    uint32_t frameLength);
 
/**
 * @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);
 
/*========== Externalized Static Functions Prototypes (Unit Test) ===========*/
 
#endif /* FOXBMS__SPI_H_ */