Diff: targets/hal/TARGET_Freescale/TARGET_KSDK2_MCUS/TARGET_KL43Z/drivers/fsl_spi_dma.h

Revision:

144:ef7eb2e8f9f7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_Freescale/TARGET_KSDK2_MCUS/TARGET_KL43Z/drivers/fsl_spi_dma.h	Fri Sep 02 15:07:44 2016 +0100
@@ -0,0 +1,206 @@
+/*
+ * Copyright (c) 2015, 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 to 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_spi.h"
+#include "fsl_dma.h"
+
+/*!
+ * @addtogroup spi_dma_driver
+ * @{
+ */
+
+
+/*******************************************************************************
+ * 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
+{
+    bool txInProgress;           /*!< Send transfer finished */
+    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.
+ */
+void 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 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 Get the transferred bytes for SPI slave DMA.
+ *
+ * @param base SPI peripheral base address.
+ * @param handle SPI DMA handle pointer.
+ * @param count Transferred bytes.
+ * @retval kStatus_SPI_Success Succeed get the transfer count.
+ * @retval kStatus_NoTransferInProgress There is not a non-blocking transaction currently in progress.
+ */
+status_t SPI_MasterTransferGetCountDMA(SPI_Type *base, spi_dma_handle_t *handle, size_t *count);
+
+/*!
+ * @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 void 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)
+{
+    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.
+ */
+static inline void SPI_SlaveTransferAbortDMA(SPI_Type *base, spi_dma_handle_t *handle)
+{
+    SPI_MasterTransferAbortDMA(base, handle);
+}
+
+/*!
+ * @brief Get the transferred bytes for SPI slave DMA.
+ *
+ * @param base SPI peripheral base address.
+ * @param handle SPI DMA handle pointer.
+ * @param count Transferred bytes.
+ * @retval kStatus_SPI_Success Succeed get the transfer count.
+ * @retval kStatus_NoTransferInProgress There is not a non-blocking transaction currently in progress.
+ */
+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