223 lines
10 KiB
C
223 lines
10 KiB
C
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/*
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* Copyright (c) 2015, Freescale Semiconductor, Inc.
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* Copyright 2016-2017 NXP
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* o Redistributions of source code must retain the above copyright notice, this list
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* of conditions and the following disclaimer.
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*
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* o Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* o Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _FSL_FLEXIO_SPI_EDMA_H_
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#define _FSL_FLEXIO_SPI_EDMA_H_
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#include "fsl_flexio_spi.h"
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#include "fsl_edma.h"
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/*!
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* @addtogroup flexio_edma_spi
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* @{
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*/
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/*******************************************************************************
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* Definitions
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******************************************************************************/
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/*! @brief typedef for flexio_spi_master_edma_handle_t in advance. */
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typedef struct _flexio_spi_master_edma_handle flexio_spi_master_edma_handle_t;
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/*! @brief Slave handle is the same with master handle. */
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typedef flexio_spi_master_edma_handle_t flexio_spi_slave_edma_handle_t;
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/*! @brief FlexIO SPI master callback for finished transmit */
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typedef void (*flexio_spi_master_edma_transfer_callback_t)(FLEXIO_SPI_Type *base,
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flexio_spi_master_edma_handle_t *handle,
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status_t status,
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void *userData);
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/*! @brief FlexIO SPI slave callback for finished transmit */
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typedef void (*flexio_spi_slave_edma_transfer_callback_t)(FLEXIO_SPI_Type *base,
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flexio_spi_slave_edma_handle_t *handle,
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status_t status,
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void *userData);
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/*! @brief FlexIO SPI eDMA transfer handle, users should not touch the content of the handle.*/
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struct _flexio_spi_master_edma_handle
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{
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size_t transferSize; /*!< Total bytes to be transferred. */
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uint8_t nbytes; /*!< eDMA minor byte transfer count initially configured. */
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bool txInProgress; /*!< Send transfer in progress */
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bool rxInProgress; /*!< Receive transfer in progress */
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edma_handle_t *txHandle; /*!< DMA handler for SPI send */
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edma_handle_t *rxHandle; /*!< DMA handler for SPI receive */
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flexio_spi_master_edma_transfer_callback_t callback; /*!< Callback for SPI DMA transfer */
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void *userData; /*!< User Data for SPI DMA callback */
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};
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/*******************************************************************************
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* APIs
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******************************************************************************/
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/*!
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* @name eDMA Transactional
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* @{
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*/
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/*!
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* @brief Initializes the FlexIO SPI master eDMA handle.
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*
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* This function initializes the FlexIO SPI master eDMA handle which can be used for other FlexIO SPI master transactional
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* APIs.
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* For a specified FlexIO SPI instance, call this API once to get the initialized handle.
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*
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* @param base Pointer to FLEXIO_SPI_Type structure.
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* @param handle Pointer to flexio_spi_master_edma_handle_t structure to store the transfer state.
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* @param callback SPI callback, NULL means no callback.
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* @param userData callback function parameter.
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* @param txHandle User requested eDMA handle for FlexIO SPI RX eDMA transfer.
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* @param rxHandle User requested eDMA handle for FlexIO SPI TX eDMA transfer.
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* @retval kStatus_Success Successfully create the handle.
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* @retval kStatus_OutOfRange The FlexIO SPI eDMA type/handle table out of range.
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*/
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status_t FLEXIO_SPI_MasterTransferCreateHandleEDMA(FLEXIO_SPI_Type *base,
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flexio_spi_master_edma_handle_t *handle,
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flexio_spi_master_edma_transfer_callback_t callback,
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void *userData,
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edma_handle_t *txHandle,
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edma_handle_t *rxHandle);
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/*!
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* @brief Performs a non-blocking FlexIO SPI transfer using eDMA.
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*
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* @note This interface returns immediately after transfer initiates. Call
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* FLEXIO_SPI_MasterGetTransferCountEDMA to poll the transfer status and check
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* whether the FlexIO SPI transfer is finished.
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*
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* @param base Pointer to FLEXIO_SPI_Type structure.
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* @param handle Pointer to flexio_spi_master_edma_handle_t structure to store the transfer state.
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* @param xfer Pointer to FlexIO SPI transfer structure.
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* @retval kStatus_Success Successfully start a transfer.
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* @retval kStatus_InvalidArgument Input argument is invalid.
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* @retval kStatus_FLEXIO_SPI_Busy FlexIO SPI is not idle, is running another transfer.
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*/
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status_t FLEXIO_SPI_MasterTransferEDMA(FLEXIO_SPI_Type *base,
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flexio_spi_master_edma_handle_t *handle,
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flexio_spi_transfer_t *xfer);
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/*!
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* @brief Aborts a FlexIO SPI transfer using eDMA.
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*
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* @param base Pointer to FLEXIO_SPI_Type structure.
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* @param handle FlexIO SPI eDMA handle pointer.
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*/
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void FLEXIO_SPI_MasterTransferAbortEDMA(FLEXIO_SPI_Type *base, flexio_spi_master_edma_handle_t *handle);
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/*!
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* @brief Gets the remaining bytes for FlexIO SPI eDMA transfer.
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*
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* @param base Pointer to FLEXIO_SPI_Type structure.
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* @param handle FlexIO SPI eDMA handle pointer.
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* @param count Number of bytes transferred so far by the non-blocking transaction.
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*/
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status_t FLEXIO_SPI_MasterTransferGetCountEDMA(FLEXIO_SPI_Type *base,
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flexio_spi_master_edma_handle_t *handle,
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size_t *count);
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/*!
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* @brief Initializes the FlexIO SPI slave eDMA handle.
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*
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* This function initializes the FlexIO SPI slave eDMA handle.
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*
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* @param base Pointer to FLEXIO_SPI_Type structure.
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* @param handle Pointer to flexio_spi_slave_edma_handle_t structure to store the transfer state.
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* @param callback SPI callback, NULL means no callback.
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* @param userData callback function parameter.
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* @param txHandle User requested eDMA handle for FlexIO SPI TX eDMA transfer.
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* @param rxHandle User requested eDMA handle for FlexIO SPI RX eDMA transfer.
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*/
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static inline void FLEXIO_SPI_SlaveTransferCreateHandleEDMA(FLEXIO_SPI_Type *base,
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flexio_spi_slave_edma_handle_t *handle,
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flexio_spi_slave_edma_transfer_callback_t callback,
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void *userData,
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edma_handle_t *txHandle,
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edma_handle_t *rxHandle)
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{
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FLEXIO_SPI_MasterTransferCreateHandleEDMA(base, handle, callback, userData, txHandle, rxHandle);
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}
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/*!
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* @brief Performs a non-blocking FlexIO SPI transfer using eDMA.
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*
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* @note This interface returns immediately after transfer initiates. Call
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* FLEXIO_SPI_SlaveGetTransferCountEDMA to poll the transfer status and
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* check whether the FlexIO SPI transfer is finished.
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*
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* @param base Pointer to FLEXIO_SPI_Type structure.
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* @param handle Pointer to flexio_spi_slave_edma_handle_t structure to store the transfer state.
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* @param xfer Pointer to FlexIO SPI transfer structure.
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* @retval kStatus_Success Successfully start a transfer.
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* @retval kStatus_InvalidArgument Input argument is invalid.
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* @retval kStatus_FLEXIO_SPI_Busy FlexIO SPI is not idle, is running another transfer.
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*/
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status_t FLEXIO_SPI_SlaveTransferEDMA(FLEXIO_SPI_Type *base,
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flexio_spi_slave_edma_handle_t *handle,
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flexio_spi_transfer_t *xfer);
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/*!
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* @brief Aborts a FlexIO SPI transfer using eDMA.
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*
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* @param base Pointer to FLEXIO_SPI_Type structure.
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* @param handle Pointer to flexio_spi_slave_edma_handle_t structure to store the transfer state.
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*/
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static inline void FLEXIO_SPI_SlaveTransferAbortEDMA(FLEXIO_SPI_Type *base, flexio_spi_slave_edma_handle_t *handle)
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{
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FLEXIO_SPI_MasterTransferAbortEDMA(base, handle);
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}
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/*!
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* @brief Gets the remaining bytes to be transferred for FlexIO SPI eDMA.
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*
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* @param base Pointer to FLEXIO_SPI_Type structure.
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* @param handle FlexIO SPI eDMA handle pointer.
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* @param count Number of bytes transferred so far by the non-blocking transaction.
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*/
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static inline status_t FLEXIO_SPI_SlaveTransferGetCountEDMA(FLEXIO_SPI_Type *base,
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flexio_spi_slave_edma_handle_t *handle,
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size_t *count)
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{
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return FLEXIO_SPI_MasterTransferGetCountEDMA(base, handle, count);
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}
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/*! @} */
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#if defined(__cplusplus)
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}
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#endif
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/*!
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* @}
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*/
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#endif
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