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TARGET_RAPIDIOT_K64F/TOOLCHAIN_ARM_STD/fsl_dspi_edma.h@172:65be27845400, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 20:53:29 2019 +0000
Revision:
172:65be27845400
Parent:
171:3a7713b1edbc 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 143:86740a56073b 1 /*
AnnaBridge 143:86740a56073b 2 * Copyright (c) 2015, Freescale Semiconductor, Inc.
AnnaBridge 143:86740a56073b 3 * Copyright 2016-2017 NXP
AnnaBridge 143:86740a56073b 4 *
AnnaBridge 143:86740a56073b 5 * Redistribution and use in source and binary forms, with or without modification,
AnnaBridge 143:86740a56073b 6 * are permitted provided that the following conditions are met:
AnnaBridge 143:86740a56073b 7 *
AnnaBridge 143:86740a56073b 8 * o Redistributions of source code must retain the above copyright notice, this list
AnnaBridge 143:86740a56073b 9 * of conditions and the following disclaimer.
AnnaBridge 143:86740a56073b 10 *
AnnaBridge 143:86740a56073b 11 * o Redistributions in binary form must reproduce the above copyright notice, this
AnnaBridge 143:86740a56073b 12 * list of conditions and the following disclaimer in the documentation and/or
AnnaBridge 143:86740a56073b 13 * other materials provided with the distribution.
AnnaBridge 143:86740a56073b 14 *
AnnaBridge 143:86740a56073b 15 * o Neither the name of the copyright holder nor the names of its
AnnaBridge 143:86740a56073b 16 * contributors may be used to endorse or promote products derived from this
AnnaBridge 143:86740a56073b 17 * software without specific prior written permission.
AnnaBridge 143:86740a56073b 18 *
AnnaBridge 143:86740a56073b 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
AnnaBridge 143:86740a56073b 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
AnnaBridge 143:86740a56073b 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
AnnaBridge 143:86740a56073b 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
AnnaBridge 143:86740a56073b 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
AnnaBridge 143:86740a56073b 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
AnnaBridge 143:86740a56073b 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
AnnaBridge 143:86740a56073b 26 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
AnnaBridge 143:86740a56073b 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
AnnaBridge 143:86740a56073b 28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AnnaBridge 143:86740a56073b 29 */
AnnaBridge 143:86740a56073b 30 #ifndef _FSL_DSPI_EDMA_H_
AnnaBridge 143:86740a56073b 31 #define _FSL_DSPI_EDMA_H_
AnnaBridge 143:86740a56073b 32
AnnaBridge 143:86740a56073b 33 #include "fsl_dspi.h"
AnnaBridge 143:86740a56073b 34 #include "fsl_edma.h"
AnnaBridge 143:86740a56073b 35 /*!
AnnaBridge 143:86740a56073b 36 * @addtogroup dspi_edma_driver
AnnaBridge 143:86740a56073b 37 * @{
AnnaBridge 143:86740a56073b 38 */
AnnaBridge 143:86740a56073b 39
AnnaBridge 143:86740a56073b 40 /***********************************************************************************************************************
AnnaBridge 143:86740a56073b 41 * Definitions
AnnaBridge 143:86740a56073b 42 **********************************************************************************************************************/
AnnaBridge 143:86740a56073b 43
AnnaBridge 143:86740a56073b 44 /*!
AnnaBridge 143:86740a56073b 45 * @brief Forward declaration of the DSPI eDMA master handle typedefs.
AnnaBridge 143:86740a56073b 46 */
AnnaBridge 143:86740a56073b 47 typedef struct _dspi_master_edma_handle dspi_master_edma_handle_t;
AnnaBridge 143:86740a56073b 48
AnnaBridge 143:86740a56073b 49 /*!
AnnaBridge 143:86740a56073b 50 * @brief Forward declaration of the DSPI eDMA slave handle typedefs.
AnnaBridge 143:86740a56073b 51 */
AnnaBridge 143:86740a56073b 52 typedef struct _dspi_slave_edma_handle dspi_slave_edma_handle_t;
AnnaBridge 143:86740a56073b 53
AnnaBridge 143:86740a56073b 54 /*!
AnnaBridge 143:86740a56073b 55 * @brief Completion callback function pointer type.
AnnaBridge 143:86740a56073b 56 *
AnnaBridge 143:86740a56073b 57 * @param base DSPI peripheral base address.
AnnaBridge 143:86740a56073b 58 * @param handle A pointer to the handle for the DSPI master.
AnnaBridge 143:86740a56073b 59 * @param status Success or error code describing whether the transfer completed.
AnnaBridge 143:86740a56073b 60 * @param userData An arbitrary pointer-dataSized value passed from the application.
AnnaBridge 143:86740a56073b 61 */
AnnaBridge 143:86740a56073b 62 typedef void (*dspi_master_edma_transfer_callback_t)(SPI_Type *base,
AnnaBridge 143:86740a56073b 63 dspi_master_edma_handle_t *handle,
AnnaBridge 143:86740a56073b 64 status_t status,
AnnaBridge 143:86740a56073b 65 void *userData);
AnnaBridge 143:86740a56073b 66 /*!
AnnaBridge 143:86740a56073b 67 * @brief Completion callback function pointer type.
AnnaBridge 143:86740a56073b 68 *
AnnaBridge 143:86740a56073b 69 * @param base DSPI peripheral base address.
AnnaBridge 143:86740a56073b 70 * @param handle A pointer to the handle for the DSPI slave.
AnnaBridge 143:86740a56073b 71 * @param status Success or error code describing whether the transfer completed.
AnnaBridge 143:86740a56073b 72 * @param userData An arbitrary pointer-dataSized value passed from the application.
AnnaBridge 143:86740a56073b 73 */
AnnaBridge 143:86740a56073b 74 typedef void (*dspi_slave_edma_transfer_callback_t)(SPI_Type *base,
AnnaBridge 143:86740a56073b 75 dspi_slave_edma_handle_t *handle,
AnnaBridge 143:86740a56073b 76 status_t status,
AnnaBridge 143:86740a56073b 77 void *userData);
AnnaBridge 143:86740a56073b 78
AnnaBridge 143:86740a56073b 79 /*! @brief DSPI master eDMA transfer handle structure used for the transactional API. */
AnnaBridge 143:86740a56073b 80 struct _dspi_master_edma_handle
AnnaBridge 143:86740a56073b 81 {
AnnaBridge 143:86740a56073b 82 uint32_t bitsPerFrame; /*!< The desired number of bits per frame. */
AnnaBridge 143:86740a56073b 83 volatile uint32_t command; /*!< The desired data command. */
AnnaBridge 143:86740a56073b 84 volatile uint32_t lastCommand; /*!< The desired last data command. */
AnnaBridge 143:86740a56073b 85
AnnaBridge 143:86740a56073b 86 uint8_t fifoSize; /*!< FIFO dataSize. */
AnnaBridge 143:86740a56073b 87
AnnaBridge 143:86740a56073b 88 volatile bool
AnnaBridge 143:86740a56073b 89 isPcsActiveAfterTransfer; /*!< Indicates whether the PCS signal keeps active after the last frame transfer.*/
AnnaBridge 143:86740a56073b 90
AnnaBridge 143:86740a56073b 91 uint8_t nbytes; /*!< eDMA minor byte transfer count initially configured. */
AnnaBridge 143:86740a56073b 92 volatile uint8_t state; /*!< DSPI transfer state , _dspi_transfer_state.*/
AnnaBridge 143:86740a56073b 93
AnnaBridge 143:86740a56073b 94 uint8_t *volatile txData; /*!< Send buffer. */
AnnaBridge 143:86740a56073b 95 uint8_t *volatile rxData; /*!< Receive buffer. */
AnnaBridge 143:86740a56073b 96 volatile size_t remainingSendByteCount; /*!< A number of bytes remaining to send.*/
AnnaBridge 143:86740a56073b 97 volatile size_t remainingReceiveByteCount; /*!< A number of bytes remaining to receive.*/
AnnaBridge 143:86740a56073b 98 size_t totalByteCount; /*!< A number of transfer bytes*/
AnnaBridge 143:86740a56073b 99
AnnaBridge 143:86740a56073b 100 uint32_t rxBuffIfNull; /*!< Used if there is not rxData for DMA purpose.*/
AnnaBridge 143:86740a56073b 101 uint32_t txBuffIfNull; /*!< Used if there is not txData for DMA purpose.*/
AnnaBridge 143:86740a56073b 102
AnnaBridge 143:86740a56073b 103 dspi_master_edma_transfer_callback_t callback; /*!< Completion callback. */
AnnaBridge 143:86740a56073b 104 void *userData; /*!< Callback user data. */
AnnaBridge 143:86740a56073b 105
AnnaBridge 143:86740a56073b 106 edma_handle_t *edmaRxRegToRxDataHandle; /*!<edma_handle_t handle point used for RxReg to RxData buff*/
AnnaBridge 143:86740a56073b 107 edma_handle_t *edmaTxDataToIntermediaryHandle; /*!<edma_handle_t handle point used for TxData to Intermediary*/
AnnaBridge 143:86740a56073b 108 edma_handle_t *edmaIntermediaryToTxRegHandle; /*!<edma_handle_t handle point used for Intermediary to TxReg*/
AnnaBridge 143:86740a56073b 109
AnnaBridge 143:86740a56073b 110 edma_tcd_t dspiSoftwareTCD[2]; /*!<SoftwareTCD , internal used*/
AnnaBridge 143:86740a56073b 111 };
AnnaBridge 143:86740a56073b 112
AnnaBridge 143:86740a56073b 113 /*! @brief DSPI slave eDMA transfer handle structure used for the transactional API.*/
AnnaBridge 143:86740a56073b 114 struct _dspi_slave_edma_handle
AnnaBridge 143:86740a56073b 115 {
AnnaBridge 143:86740a56073b 116 uint32_t bitsPerFrame; /*!< The desired number of bits per frame. */
AnnaBridge 143:86740a56073b 117
AnnaBridge 143:86740a56073b 118 uint8_t *volatile txData; /*!< Send buffer. */
AnnaBridge 143:86740a56073b 119 uint8_t *volatile rxData; /*!< Receive buffer. */
AnnaBridge 143:86740a56073b 120 volatile size_t remainingSendByteCount; /*!< A number of bytes remaining to send.*/
AnnaBridge 143:86740a56073b 121 volatile size_t remainingReceiveByteCount; /*!< A number of bytes remaining to receive.*/
AnnaBridge 143:86740a56073b 122 size_t totalByteCount; /*!< A number of transfer bytes*/
AnnaBridge 143:86740a56073b 123
AnnaBridge 143:86740a56073b 124 uint32_t rxBuffIfNull; /*!< Used if there is not rxData for DMA purpose.*/
AnnaBridge 143:86740a56073b 125 uint32_t txBuffIfNull; /*!< Used if there is not txData for DMA purpose.*/
AnnaBridge 143:86740a56073b 126 uint32_t txLastData; /*!< Used if there is an extra byte when 16bits per frame for DMA purpose.*/
AnnaBridge 143:86740a56073b 127
AnnaBridge 143:86740a56073b 128 uint8_t nbytes; /*!< eDMA minor byte transfer count initially configured. */
AnnaBridge 143:86740a56073b 129
AnnaBridge 143:86740a56073b 130 volatile uint8_t state; /*!< DSPI transfer state.*/
AnnaBridge 143:86740a56073b 131
AnnaBridge 143:86740a56073b 132 dspi_slave_edma_transfer_callback_t callback; /*!< Completion callback. */
AnnaBridge 143:86740a56073b 133 void *userData; /*!< Callback user data. */
AnnaBridge 143:86740a56073b 134
AnnaBridge 143:86740a56073b 135 edma_handle_t *edmaRxRegToRxDataHandle; /*!<edma_handle_t handle point used for RxReg to RxData buff*/
AnnaBridge 143:86740a56073b 136 edma_handle_t *edmaTxDataToTxRegHandle; /*!<edma_handle_t handle point used for TxData to TxReg*/
AnnaBridge 143:86740a56073b 137 };
AnnaBridge 143:86740a56073b 138
AnnaBridge 143:86740a56073b 139 /***********************************************************************************************************************
AnnaBridge 143:86740a56073b 140 * API
AnnaBridge 143:86740a56073b 141 **********************************************************************************************************************/
AnnaBridge 143:86740a56073b 142 #if defined(__cplusplus)
AnnaBridge 143:86740a56073b 143 extern "C" {
AnnaBridge 143:86740a56073b 144 #endif /*_cplusplus*/
AnnaBridge 143:86740a56073b 145
AnnaBridge 143:86740a56073b 146 /*Transactional APIs*/
AnnaBridge 143:86740a56073b 147
AnnaBridge 143:86740a56073b 148 /*!
AnnaBridge 143:86740a56073b 149 * @brief Initializes the DSPI master eDMA handle.
AnnaBridge 143:86740a56073b 150 *
AnnaBridge 143:86740a56073b 151 * This function initializes the DSPI eDMA handle which can be used for other DSPI transactional APIs. Usually, for a
AnnaBridge 143:86740a56073b 152 * specified DSPI instance, call this API once to get the initialized handle.
AnnaBridge 143:86740a56073b 153 *
AnnaBridge 143:86740a56073b 154 * Note that DSPI eDMA has separated (RX and TX as two sources) or shared (RX and TX are the same source) DMA request
AnnaBridge 143:86740a56073b 155 * source.
AnnaBridge 143:86740a56073b 156 * (1) For the separated DMA request source, enable and set the RX DMAMUX source for edmaRxRegToRxDataHandle and
AnnaBridge 143:86740a56073b 157 * TX DMAMUX source for edmaIntermediaryToTxRegHandle.
AnnaBridge 143:86740a56073b 158 * (2) For the shared DMA request source, enable and set the RX/RX DMAMUX source for the edmaRxRegToRxDataHandle.
AnnaBridge 143:86740a56073b 159 *
AnnaBridge 143:86740a56073b 160 * @param base DSPI peripheral base address.
AnnaBridge 143:86740a56073b 161 * @param handle DSPI handle pointer to dspi_master_edma_handle_t.
AnnaBridge 143:86740a56073b 162 * @param callback DSPI callback.
AnnaBridge 143:86740a56073b 163 * @param userData A callback function parameter.
AnnaBridge 143:86740a56073b 164 * @param edmaRxRegToRxDataHandle edmaRxRegToRxDataHandle pointer to edma_handle_t.
AnnaBridge 143:86740a56073b 165 * @param edmaTxDataToIntermediaryHandle edmaTxDataToIntermediaryHandle pointer to edma_handle_t.
AnnaBridge 143:86740a56073b 166 * @param edmaIntermediaryToTxRegHandle edmaIntermediaryToTxRegHandle pointer to edma_handle_t.
AnnaBridge 143:86740a56073b 167 */
AnnaBridge 143:86740a56073b 168 void DSPI_MasterTransferCreateHandleEDMA(SPI_Type *base,
AnnaBridge 143:86740a56073b 169 dspi_master_edma_handle_t *handle,
AnnaBridge 143:86740a56073b 170 dspi_master_edma_transfer_callback_t callback,
AnnaBridge 143:86740a56073b 171 void *userData,
AnnaBridge 143:86740a56073b 172 edma_handle_t *edmaRxRegToRxDataHandle,
AnnaBridge 143:86740a56073b 173 edma_handle_t *edmaTxDataToIntermediaryHandle,
AnnaBridge 143:86740a56073b 174 edma_handle_t *edmaIntermediaryToTxRegHandle);
AnnaBridge 143:86740a56073b 175
AnnaBridge 143:86740a56073b 176 /*!
AnnaBridge 143:86740a56073b 177 * @brief DSPI master transfer data using eDMA.
AnnaBridge 143:86740a56073b 178 *
AnnaBridge 143:86740a56073b 179 * This function transfers data using eDMA. This is a non-blocking function, which returns right away. When all data
AnnaBridge 143:86740a56073b 180 * is transferred, the callback function is called.
AnnaBridge 143:86740a56073b 181 *
AnnaBridge 143:86740a56073b 182 * @param base DSPI peripheral base address.
AnnaBridge 143:86740a56073b 183 * @param handle A pointer to the dspi_master_edma_handle_t structure which stores the transfer state.
AnnaBridge 143:86740a56073b 184 * @param transfer A pointer to the dspi_transfer_t structure.
AnnaBridge 143:86740a56073b 185 * @return status of status_t.
AnnaBridge 143:86740a56073b 186 */
AnnaBridge 143:86740a56073b 187 status_t DSPI_MasterTransferEDMA(SPI_Type *base, dspi_master_edma_handle_t *handle, dspi_transfer_t *transfer);
AnnaBridge 143:86740a56073b 188
AnnaBridge 143:86740a56073b 189 /*!
AnnaBridge 143:86740a56073b 190 * @brief DSPI master aborts a transfer which is using eDMA.
AnnaBridge 143:86740a56073b 191 *
AnnaBridge 143:86740a56073b 192 * This function aborts a transfer which is using eDMA.
AnnaBridge 143:86740a56073b 193 *
AnnaBridge 143:86740a56073b 194 * @param base DSPI peripheral base address.
AnnaBridge 143:86740a56073b 195 * @param handle A pointer to the dspi_master_edma_handle_t structure which stores the transfer state.
AnnaBridge 143:86740a56073b 196 */
AnnaBridge 143:86740a56073b 197 void DSPI_MasterTransferAbortEDMA(SPI_Type *base, dspi_master_edma_handle_t *handle);
AnnaBridge 143:86740a56073b 198
AnnaBridge 143:86740a56073b 199 /*!
AnnaBridge 143:86740a56073b 200 * @brief Gets the master eDMA transfer count.
AnnaBridge 143:86740a56073b 201 *
AnnaBridge 143:86740a56073b 202 * This function gets the master eDMA transfer count.
AnnaBridge 143:86740a56073b 203 *
AnnaBridge 143:86740a56073b 204 * @param base DSPI peripheral base address.
AnnaBridge 143:86740a56073b 205 * @param handle A pointer to the dspi_master_edma_handle_t structure which stores the transfer state.
AnnaBridge 143:86740a56073b 206 * @param count A number of bytes transferred by the non-blocking transaction.
AnnaBridge 143:86740a56073b 207 * @return status of status_t.
AnnaBridge 143:86740a56073b 208 */
AnnaBridge 143:86740a56073b 209 status_t DSPI_MasterTransferGetCountEDMA(SPI_Type *base, dspi_master_edma_handle_t *handle, size_t *count);
AnnaBridge 143:86740a56073b 210
AnnaBridge 143:86740a56073b 211 /*!
AnnaBridge 143:86740a56073b 212 * @brief Initializes the DSPI slave eDMA handle.
AnnaBridge 143:86740a56073b 213 *
AnnaBridge 143:86740a56073b 214 * This function initializes the DSPI eDMA handle which can be used for other DSPI transactional APIs. Usually, for a
AnnaBridge 143:86740a56073b 215 * specified DSPI instance, call this API once to get the initialized handle.
AnnaBridge 143:86740a56073b 216 *
AnnaBridge 143:86740a56073b 217 * Note that DSPI eDMA has separated (RN and TX in 2 sources) or shared (RX and TX are the same source) DMA request
AnnaBridge 143:86740a56073b 218 * source.
AnnaBridge 143:86740a56073b 219 * (1)For the separated DMA request source, enable and set the RX DMAMUX source for edmaRxRegToRxDataHandle and
AnnaBridge 143:86740a56073b 220 * TX DMAMUX source for edmaTxDataToTxRegHandle.
AnnaBridge 143:86740a56073b 221 * (2)For the shared DMA request source, enable and set the RX/RX DMAMUX source for the edmaRxRegToRxDataHandle.
AnnaBridge 143:86740a56073b 222 *
AnnaBridge 143:86740a56073b 223 * @param base DSPI peripheral base address.
AnnaBridge 143:86740a56073b 224 * @param handle DSPI handle pointer to dspi_slave_edma_handle_t.
AnnaBridge 143:86740a56073b 225 * @param callback DSPI callback.
AnnaBridge 143:86740a56073b 226 * @param userData A callback function parameter.
AnnaBridge 143:86740a56073b 227 * @param edmaRxRegToRxDataHandle edmaRxRegToRxDataHandle pointer to edma_handle_t.
AnnaBridge 143:86740a56073b 228 * @param edmaTxDataToTxRegHandle edmaTxDataToTxRegHandle pointer to edma_handle_t.
AnnaBridge 143:86740a56073b 229 */
AnnaBridge 143:86740a56073b 230 void DSPI_SlaveTransferCreateHandleEDMA(SPI_Type *base,
AnnaBridge 143:86740a56073b 231 dspi_slave_edma_handle_t *handle,
AnnaBridge 143:86740a56073b 232 dspi_slave_edma_transfer_callback_t callback,
AnnaBridge 143:86740a56073b 233 void *userData,
AnnaBridge 143:86740a56073b 234 edma_handle_t *edmaRxRegToRxDataHandle,
AnnaBridge 143:86740a56073b 235 edma_handle_t *edmaTxDataToTxRegHandle);
AnnaBridge 143:86740a56073b 236
AnnaBridge 143:86740a56073b 237 /*!
AnnaBridge 143:86740a56073b 238 * @brief DSPI slave transfer data using eDMA.
AnnaBridge 143:86740a56073b 239 *
AnnaBridge 143:86740a56073b 240 * This function transfers data using eDMA. This is a non-blocking function, which returns right away. When all data
AnnaBridge 143:86740a56073b 241 * is transferred, the callback function is called.
AnnaBridge 143:86740a56073b 242 * Note that the slave eDMA transfer doesn't support transfer_size is 1 when the bitsPerFrame is greater
AnnaBridge 143:86740a56073b 243 * than eight.
AnnaBridge 143:86740a56073b 244
AnnaBridge 143:86740a56073b 245 * @param base DSPI peripheral base address.
AnnaBridge 143:86740a56073b 246 * @param handle A pointer to the dspi_slave_edma_handle_t structure which stores the transfer state.
AnnaBridge 143:86740a56073b 247 * @param transfer A pointer to the dspi_transfer_t structure.
AnnaBridge 143:86740a56073b 248 * @return status of status_t.
AnnaBridge 143:86740a56073b 249 */
AnnaBridge 143:86740a56073b 250 status_t DSPI_SlaveTransferEDMA(SPI_Type *base, dspi_slave_edma_handle_t *handle, dspi_transfer_t *transfer);
AnnaBridge 143:86740a56073b 251
AnnaBridge 143:86740a56073b 252 /*!
AnnaBridge 143:86740a56073b 253 * @brief DSPI slave aborts a transfer which is using eDMA.
AnnaBridge 143:86740a56073b 254 *
AnnaBridge 143:86740a56073b 255 * This function aborts a transfer which is using eDMA.
AnnaBridge 143:86740a56073b 256 *
AnnaBridge 143:86740a56073b 257 * @param base DSPI peripheral base address.
AnnaBridge 143:86740a56073b 258 * @param handle A pointer to the dspi_slave_edma_handle_t structure which stores the transfer state.
AnnaBridge 143:86740a56073b 259 */
AnnaBridge 143:86740a56073b 260 void DSPI_SlaveTransferAbortEDMA(SPI_Type *base, dspi_slave_edma_handle_t *handle);
AnnaBridge 143:86740a56073b 261
AnnaBridge 143:86740a56073b 262 /*!
AnnaBridge 143:86740a56073b 263 * @brief Gets the slave eDMA transfer count.
AnnaBridge 143:86740a56073b 264 *
AnnaBridge 143:86740a56073b 265 * This function gets the slave eDMA transfer count.
AnnaBridge 143:86740a56073b 266 *
AnnaBridge 143:86740a56073b 267 * @param base DSPI peripheral base address.
AnnaBridge 143:86740a56073b 268 * @param handle A pointer to the dspi_slave_edma_handle_t structure which stores the transfer state.
AnnaBridge 143:86740a56073b 269 * @param count A number of bytes transferred so far by the non-blocking transaction.
AnnaBridge 143:86740a56073b 270 * @return status of status_t.
AnnaBridge 143:86740a56073b 271 */
AnnaBridge 143:86740a56073b 272 status_t DSPI_SlaveTransferGetCountEDMA(SPI_Type *base, dspi_slave_edma_handle_t *handle, size_t *count);
AnnaBridge 143:86740a56073b 273
AnnaBridge 143:86740a56073b 274 #if defined(__cplusplus)
AnnaBridge 143:86740a56073b 275 }
AnnaBridge 143:86740a56073b 276 #endif /*_cplusplus*/
AnnaBridge 143:86740a56073b 277 /*!
AnnaBridge 143:86740a56073b 278 *@}
AnnaBridge 143:86740a56073b 279 */
AnnaBridge 143:86740a56073b 280
AnnaBridge 143:86740a56073b 281 #endif /*_FSL_DSPI_EDMA_H_*/