rt-thread/bsp/lpc54114-lite/Libraries/devices/LPC54114/drivers/fsl_spi_dma.h

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2018-12-05 11:44:53 +08:00
/*
* The Clear BSD License
* Copyright (c) 2016, Freescale Semiconductor, Inc.
* Copyright 2016-2017 NXP
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted (subject to the limitations in the disclaimer below) provided
* that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* o Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _FSL_SPI_DMA_H_
#define _FSL_SPI_DMA_H_
#include "fsl_dma.h"
#include "fsl_spi.h"
/*!
* @addtogroup spi_dma_driver
* @{
*/
/*! @file */
/*******************************************************************************
* Definitions
******************************************************************************/
/*! @name Driver version */
/*@{*/
/*! @brief SPI DMA driver version 2.0.2. */
#define FSL_SPI_DMA_DRIVER_VERSION (MAKE_VERSION(2, 0, 2))
/*@}*/
typedef struct _spi_dma_handle spi_dma_handle_t;
/*! @brief SPI DMA callback called at the end of transfer. */
typedef void (*spi_dma_callback_t)(SPI_Type *base, spi_dma_handle_t *handle, status_t status, void *userData);
/*! @brief SPI DMA transfer handle, users should not touch the content of the handle.*/
struct _spi_dma_handle
{
volatile bool txInProgress; /*!< Send transfer finished */
volatile bool rxInProgress; /*!< Receive transfer finished */
dma_handle_t *txHandle; /*!< DMA handler for SPI send */
dma_handle_t *rxHandle; /*!< DMA handler for SPI receive */
uint8_t bytesPerFrame; /*!< Bytes in a frame for SPI tranfer */
spi_dma_callback_t callback; /*!< Callback for SPI DMA transfer */
void *userData; /*!< User Data for SPI DMA callback */
uint32_t state; /*!< Internal state of SPI DMA transfer */
size_t transferSize; /*!< Bytes need to be transfer */
};
/*******************************************************************************
* APIs
******************************************************************************/
#if defined(__cplusplus)
extern "C" {
#endif
/*!
* @name DMA Transactional
* @{
*/
/*!
* @brief Initialize the SPI master DMA handle.
*
* This function initializes the SPI master DMA handle which can be used for other SPI master transactional APIs.
* Usually, for a specified SPI instance, user need only call this API once to get the initialized handle.
*
* @param base SPI peripheral base address.
* @param handle SPI handle pointer.
* @param callback User callback function called at the end of a transfer.
* @param userData User data for callback.
* @param txHandle DMA handle pointer for SPI Tx, the handle shall be static allocated by users.
* @param rxHandle DMA handle pointer for SPI Rx, the handle shall be static allocated by users.
*/
status_t SPI_MasterTransferCreateHandleDMA(SPI_Type *base,
spi_dma_handle_t *handle,
spi_dma_callback_t callback,
void *userData,
dma_handle_t *txHandle,
dma_handle_t *rxHandle);
/*!
* @brief Perform a non-blocking SPI transfer using DMA.
*
* @note This interface returned immediately after transfer initiates, users should call
* SPI_GetTransferStatus to poll the transfer status to check whether SPI transfer finished.
*
* @param base SPI peripheral base address.
* @param handle SPI DMA handle pointer.
* @param xfer Pointer to dma transfer structure.
* @retval kStatus_Success Successfully start a transfer.
* @retval kStatus_InvalidArgument Input argument is invalid.
* @retval kStatus_SPI_Busy SPI is not idle, is running another transfer.
*/
status_t SPI_MasterTransferDMA(SPI_Type *base, spi_dma_handle_t *handle, spi_transfer_t *xfer);
/*!
* @brief Transfers a block of data using a DMA method.
*
* This function using polling way to do the first half transimission and using DMA way to
* do the srcond half transimission, the transfer mechanism is half-duplex.
* When do the second half transimission, code will return right away. When all data is transferred,
* the callback function is called.
*
* @param base SPI base pointer
* @param handle A pointer to the spi_master_dma_handle_t structure which stores the transfer state.
* @param transfer A pointer to the spi_half_duplex_transfer_t structure.
* @return status of status_t.
*/
status_t SPI_MasterHalfDuplexTransferDMA(SPI_Type *base, spi_dma_handle_t *handle, spi_half_duplex_transfer_t *xfer);
/*!
* @brief Initialize the SPI slave DMA handle.
*
* This function initializes the SPI slave DMA handle which can be used for other SPI master transactional APIs.
* Usually, for a specified SPI instance, user need only call this API once to get the initialized handle.
*
* @param base SPI peripheral base address.
* @param handle SPI handle pointer.
* @param callback User callback function called at the end of a transfer.
* @param userData User data for callback.
* @param txHandle DMA handle pointer for SPI Tx, the handle shall be static allocated by users.
* @param rxHandle DMA handle pointer for SPI Rx, the handle shall be static allocated by users.
*/
static inline status_t SPI_SlaveTransferCreateHandleDMA(SPI_Type *base,
spi_dma_handle_t *handle,
spi_dma_callback_t callback,
void *userData,
dma_handle_t *txHandle,
dma_handle_t *rxHandle)
{
return SPI_MasterTransferCreateHandleDMA(base, handle, callback, userData, txHandle, rxHandle);
}
/*!
* @brief Perform a non-blocking SPI transfer using DMA.
*
* @note This interface returned immediately after transfer initiates, users should call
* SPI_GetTransferStatus to poll the transfer status to check whether SPI transfer finished.
*
* @param base SPI peripheral base address.
* @param handle SPI DMA handle pointer.
* @param xfer Pointer to dma transfer structure.
* @retval kStatus_Success Successfully start a transfer.
* @retval kStatus_InvalidArgument Input argument is invalid.
* @retval kStatus_SPI_Busy SPI is not idle, is running another transfer.
*/
static inline status_t SPI_SlaveTransferDMA(SPI_Type *base, spi_dma_handle_t *handle, spi_transfer_t *xfer)
{
return SPI_MasterTransferDMA(base, handle, xfer);
}
/*!
* @brief Abort a SPI transfer using DMA.
*
* @param base SPI peripheral base address.
* @param handle SPI DMA handle pointer.
*/
void SPI_MasterTransferAbortDMA(SPI_Type *base, spi_dma_handle_t *handle);
/*!
* @brief Gets the master DMA transfer remaining bytes.
*
* This function gets the master DMA transfer remaining bytes.
*
* @param base SPI peripheral base address.
* @param handle A pointer to the spi_dma_handle_t structure which stores the transfer state.
* @param count A number of bytes transferred by the non-blocking transaction.
* @return status of status_t.
*/
status_t SPI_MasterTransferGetCountDMA(SPI_Type *base, spi_dma_handle_t *handle, size_t *count);
/*!
* @brief Abort a SPI transfer using DMA.
*
* @param base SPI peripheral base address.
* @param handle SPI DMA handle pointer.
*/
static inline void SPI_SlaveTransferAbortDMA(SPI_Type *base, spi_dma_handle_t *handle)
{
SPI_MasterTransferAbortDMA(base, handle);
}
/*!
* @brief Gets the slave DMA transfer remaining bytes.
*
* This function gets the slave DMA transfer remaining bytes.
*
* @param base SPI peripheral base address.
* @param handle A pointer to the spi_dma_handle_t structure which stores the transfer state.
* @param count A number of bytes transferred by the non-blocking transaction.
* @return status of status_t.
*/
static inline status_t SPI_SlaveTransferGetCountDMA(SPI_Type *base, spi_dma_handle_t *handle, size_t *count)
{
return SPI_MasterTransferGetCountDMA(base, handle, count);
}
/*! @} */
#if defined(__cplusplus)
}
#endif
/*! @} */
#endif /* _FSL_SPI_DMA_H_*/