282 lines
13 KiB
C
282 lines
13 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_DSPI_EDMA_H_
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#define _FSL_DSPI_EDMA_H_
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#include "fsl_dspi.h"
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#include "fsl_edma.h"
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/*!
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* @addtogroup dspi_edma_driver
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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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/*!
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* @brief Forward declaration of the DSPI eDMA master handle typedefs.
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*/
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typedef struct _dspi_master_edma_handle dspi_master_edma_handle_t;
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/*!
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* @brief Forward declaration of the DSPI eDMA slave handle typedefs.
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*/
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typedef struct _dspi_slave_edma_handle dspi_slave_edma_handle_t;
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/*!
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* @brief Completion callback function pointer type.
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*
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* @param base DSPI peripheral base address.
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* @param handle A pointer to the handle for the DSPI master.
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* @param status Success or error code describing whether the transfer completed.
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* @param userData An arbitrary pointer-dataSized value passed from the application.
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*/
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typedef void (*dspi_master_edma_transfer_callback_t)(SPI_Type *base,
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dspi_master_edma_handle_t *handle,
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status_t status,
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void *userData);
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/*!
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* @brief Completion callback function pointer type.
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*
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* @param base DSPI peripheral base address.
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* @param handle A pointer to the handle for the DSPI slave.
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* @param status Success or error code describing whether the transfer completed.
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* @param userData An arbitrary pointer-dataSized value passed from the application.
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*/
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typedef void (*dspi_slave_edma_transfer_callback_t)(SPI_Type *base,
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dspi_slave_edma_handle_t *handle,
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status_t status,
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void *userData);
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/*! @brief DSPI master eDMA transfer handle structure used for the transactional API. */
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struct _dspi_master_edma_handle
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{
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uint32_t bitsPerFrame; /*!< The desired number of bits per frame. */
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volatile uint32_t command; /*!< The desired data command. */
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volatile uint32_t lastCommand; /*!< The desired last data command. */
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uint8_t fifoSize; /*!< FIFO dataSize. */
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volatile bool
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isPcsActiveAfterTransfer; /*!< Indicates whether the PCS signal keeps active after the last frame transfer.*/
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uint8_t nbytes; /*!< eDMA minor byte transfer count initially configured. */
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volatile uint8_t state; /*!< DSPI transfer state , _dspi_transfer_state.*/
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uint8_t *volatile txData; /*!< Send buffer. */
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uint8_t *volatile rxData; /*!< Receive buffer. */
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volatile size_t remainingSendByteCount; /*!< A number of bytes remaining to send.*/
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volatile size_t remainingReceiveByteCount; /*!< A number of bytes remaining to receive.*/
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size_t totalByteCount; /*!< A number of transfer bytes*/
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uint32_t rxBuffIfNull; /*!< Used if there is not rxData for DMA purpose.*/
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uint32_t txBuffIfNull; /*!< Used if there is not txData for DMA purpose.*/
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dspi_master_edma_transfer_callback_t callback; /*!< Completion callback. */
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void *userData; /*!< Callback user data. */
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edma_handle_t *edmaRxRegToRxDataHandle; /*!<edma_handle_t handle point used for RxReg to RxData buff*/
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edma_handle_t *edmaTxDataToIntermediaryHandle; /*!<edma_handle_t handle point used for TxData to Intermediary*/
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edma_handle_t *edmaIntermediaryToTxRegHandle; /*!<edma_handle_t handle point used for Intermediary to TxReg*/
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edma_tcd_t dspiSoftwareTCD[2]; /*!<SoftwareTCD , internal used*/
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};
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/*! @brief DSPI slave eDMA transfer handle structure used for the transactional API.*/
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struct _dspi_slave_edma_handle
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{
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uint32_t bitsPerFrame; /*!< The desired number of bits per frame. */
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uint8_t *volatile txData; /*!< Send buffer. */
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uint8_t *volatile rxData; /*!< Receive buffer. */
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volatile size_t remainingSendByteCount; /*!< A number of bytes remaining to send.*/
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volatile size_t remainingReceiveByteCount; /*!< A number of bytes remaining to receive.*/
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size_t totalByteCount; /*!< A number of transfer bytes*/
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uint32_t rxBuffIfNull; /*!< Used if there is not rxData for DMA purpose.*/
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uint32_t txBuffIfNull; /*!< Used if there is not txData for DMA purpose.*/
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uint32_t txLastData; /*!< Used if there is an extra byte when 16bits per frame for DMA purpose.*/
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uint8_t nbytes; /*!< eDMA minor byte transfer count initially configured. */
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volatile uint8_t state; /*!< DSPI transfer state.*/
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dspi_slave_edma_transfer_callback_t callback; /*!< Completion callback. */
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void *userData; /*!< Callback user data. */
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edma_handle_t *edmaRxRegToRxDataHandle; /*!<edma_handle_t handle point used for RxReg to RxData buff*/
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edma_handle_t *edmaTxDataToTxRegHandle; /*!<edma_handle_t handle point used for TxData to TxReg*/
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};
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/***********************************************************************************************************************
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* API
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**********************************************************************************************************************/
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#if defined(__cplusplus)
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extern "C" {
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#endif /*_cplusplus*/
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/*Transactional APIs*/
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/*!
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* @brief Initializes the DSPI master eDMA handle.
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*
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* This function initializes the DSPI eDMA handle which can be used for other DSPI transactional APIs. Usually, for a
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* specified DSPI instance, call this API once to get the initialized handle.
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*
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* Note that DSPI eDMA has separated (RX and TX as two sources) or shared (RX and TX are the same source) DMA request
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* source.
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* (1) For the separated DMA request source, enable and set the RX DMAMUX source for edmaRxRegToRxDataHandle and
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* TX DMAMUX source for edmaIntermediaryToTxRegHandle.
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* (2) For the shared DMA request source, enable and set the RX/RX DMAMUX source for the edmaRxRegToRxDataHandle.
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*
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* @param base DSPI peripheral base address.
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* @param handle DSPI handle pointer to dspi_master_edma_handle_t.
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* @param callback DSPI callback.
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* @param userData A callback function parameter.
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* @param edmaRxRegToRxDataHandle edmaRxRegToRxDataHandle pointer to edma_handle_t.
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* @param edmaTxDataToIntermediaryHandle edmaTxDataToIntermediaryHandle pointer to edma_handle_t.
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* @param edmaIntermediaryToTxRegHandle edmaIntermediaryToTxRegHandle pointer to edma_handle_t.
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*/
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void DSPI_MasterTransferCreateHandleEDMA(SPI_Type *base,
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dspi_master_edma_handle_t *handle,
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dspi_master_edma_transfer_callback_t callback,
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void *userData,
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edma_handle_t *edmaRxRegToRxDataHandle,
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edma_handle_t *edmaTxDataToIntermediaryHandle,
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edma_handle_t *edmaIntermediaryToTxRegHandle);
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/*!
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* @brief DSPI master transfer data using eDMA.
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*
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* This function transfers data using eDMA. This is a non-blocking function, which returns right away. When all data
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* is transferred, the callback function is called.
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*
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* @param base DSPI peripheral base address.
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* @param handle A pointer to the dspi_master_edma_handle_t structure which stores the transfer state.
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* @param transfer A pointer to the dspi_transfer_t structure.
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* @return status of status_t.
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*/
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status_t DSPI_MasterTransferEDMA(SPI_Type *base, dspi_master_edma_handle_t *handle, dspi_transfer_t *transfer);
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/*!
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* @brief DSPI master aborts a transfer which is using eDMA.
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*
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* This function aborts a transfer which is using eDMA.
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*
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* @param base DSPI peripheral base address.
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* @param handle A pointer to the dspi_master_edma_handle_t structure which stores the transfer state.
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*/
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void DSPI_MasterTransferAbortEDMA(SPI_Type *base, dspi_master_edma_handle_t *handle);
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/*!
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* @brief Gets the master eDMA transfer count.
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*
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* This function gets the master eDMA transfer count.
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*
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* @param base DSPI peripheral base address.
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* @param handle A pointer to the dspi_master_edma_handle_t structure which stores the transfer state.
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* @param count A number of bytes transferred by the non-blocking transaction.
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* @return status of status_t.
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*/
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status_t DSPI_MasterTransferGetCountEDMA(SPI_Type *base, dspi_master_edma_handle_t *handle, size_t *count);
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/*!
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* @brief Initializes the DSPI slave eDMA handle.
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*
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* This function initializes the DSPI eDMA handle which can be used for other DSPI transactional APIs. Usually, for a
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* specified DSPI instance, call this API once to get the initialized handle.
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*
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* Note that DSPI eDMA has separated (RN and TX in 2 sources) or shared (RX and TX are the same source) DMA request
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* source.
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* (1)For the separated DMA request source, enable and set the RX DMAMUX source for edmaRxRegToRxDataHandle and
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* TX DMAMUX source for edmaTxDataToTxRegHandle.
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* (2)For the shared DMA request source, enable and set the RX/RX DMAMUX source for the edmaRxRegToRxDataHandle.
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*
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* @param base DSPI peripheral base address.
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* @param handle DSPI handle pointer to dspi_slave_edma_handle_t.
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* @param callback DSPI callback.
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* @param userData A callback function parameter.
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* @param edmaRxRegToRxDataHandle edmaRxRegToRxDataHandle pointer to edma_handle_t.
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* @param edmaTxDataToTxRegHandle edmaTxDataToTxRegHandle pointer to edma_handle_t.
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*/
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void DSPI_SlaveTransferCreateHandleEDMA(SPI_Type *base,
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dspi_slave_edma_handle_t *handle,
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dspi_slave_edma_transfer_callback_t callback,
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void *userData,
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edma_handle_t *edmaRxRegToRxDataHandle,
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edma_handle_t *edmaTxDataToTxRegHandle);
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/*!
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* @brief DSPI slave transfer data using eDMA.
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*
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* This function transfers data using eDMA. This is a non-blocking function, which returns right away. When all data
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* is transferred, the callback function is called.
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* Note that the slave eDMA transfer doesn't support transfer_size is 1 when the bitsPerFrame is greater
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* than eight.
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* @param base DSPI peripheral base address.
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* @param handle A pointer to the dspi_slave_edma_handle_t structure which stores the transfer state.
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* @param transfer A pointer to the dspi_transfer_t structure.
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* @return status of status_t.
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*/
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status_t DSPI_SlaveTransferEDMA(SPI_Type *base, dspi_slave_edma_handle_t *handle, dspi_transfer_t *transfer);
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/*!
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* @brief DSPI slave aborts a transfer which is using eDMA.
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*
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* This function aborts a transfer which is using eDMA.
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*
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* @param base DSPI peripheral base address.
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* @param handle A pointer to the dspi_slave_edma_handle_t structure which stores the transfer state.
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*/
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void DSPI_SlaveTransferAbortEDMA(SPI_Type *base, dspi_slave_edma_handle_t *handle);
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/*!
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* @brief Gets the slave eDMA transfer count.
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*
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* This function gets the slave eDMA transfer count.
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*
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* @param base DSPI peripheral base address.
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* @param handle A pointer to the dspi_slave_edma_handle_t structure which stores the transfer state.
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* @param count A number of bytes transferred so far by the non-blocking transaction.
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* @return status of status_t.
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*/
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status_t DSPI_SlaveTransferGetCountEDMA(SPI_Type *base, dspi_slave_edma_handle_t *handle, size_t *count);
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#if defined(__cplusplus)
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}
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#endif /*_cplusplus*/
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/*!
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*@}
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*/
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#endif /*_FSL_DSPI_EDMA_H_*/
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