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Diff: TARGET_LPC54114/TOOLCHAIN_GCC_ARM/fsl_spi_dma.h
- Revision:
- 171:3a7713b1edbc
- Parent:
- 148:fd96258d940d
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_LPC54114/TOOLCHAIN_GCC_ARM/fsl_spi_dma.h Thu Nov 08 11:45:42 2018 +0000 @@ -0,0 +1,209 @@ +/* + * Copyright (c) 2016, Freescale Semiconductor, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted 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 Freescale Semiconductor, Inc. nor the names of its + * contributors may be used tom endorse or promote products derived from this + * software without specific prior written permission. + * + * 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 + ******************************************************************************/ + +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 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_*/