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Diff: TARGET_K22F/TOOLCHAIN_IAR/fsl_lpuart_edma.h
- Revision:
- 171:3a7713b1edbc
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_K22F/TOOLCHAIN_IAR/fsl_lpuart_edma.h Thu Nov 08 11:45:42 2018 +0000 @@ -0,0 +1,190 @@ +/* + * 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_LPUART_EDMA_H_ +#define _FSL_LPUART_EDMA_H_ + +#include "fsl_lpuart.h" +#include "fsl_dmamux.h" +#include "fsl_edma.h" + +/*! + * @addtogroup lpuart_edma_driver + * @{ + */ + +/*! @file*/ + +/******************************************************************************* + * Definitions + ******************************************************************************/ + +/* Forward declaration of the handle typedef. */ +typedef struct _lpuart_edma_handle lpuart_edma_handle_t; + +/*! @brief LPUART transfer callback function. */ +typedef void (*lpuart_edma_transfer_callback_t)(LPUART_Type *base, + lpuart_edma_handle_t *handle, + status_t status, + void *userData); + +/*! +* @brief LPUART eDMA handle +*/ +struct _lpuart_edma_handle +{ + lpuart_edma_transfer_callback_t callback; /*!< Callback function. */ + void *userData; /*!< LPUART callback function parameter.*/ + size_t rxDataSizeAll; /*!< Size of the data to receive. */ + size_t txDataSizeAll; /*!< Size of the data to send out. */ + + edma_handle_t *txEdmaHandle; /*!< The eDMA TX channel used. */ + edma_handle_t *rxEdmaHandle; /*!< The eDMA RX channel used. */ + + volatile uint8_t txState; /*!< TX transfer state. */ + volatile uint8_t rxState; /*!< RX transfer state */ +}; + +/******************************************************************************* + * API + ******************************************************************************/ + +#if defined(__cplusplus) +extern "C" { +#endif + +/*! + * @name eDMA transactional + * @{ + */ + +/*! + * @brief Initializes the LPUART handle which is used in transactional functions. + * @param base LPUART peripheral base address. + * @param handle Pointer to lpuart_edma_handle_t structure. + * @param callback Callback function. + * @param userData User data. + * @param txEdmaHandle User requested DMA handle for TX DMA transfer. + * @param rxEdmaHandle User requested DMA handle for RX DMA transfer. + */ +void LPUART_TransferCreateHandleEDMA(LPUART_Type *base, + lpuart_edma_handle_t *handle, + lpuart_edma_transfer_callback_t callback, + void *userData, + edma_handle_t *txEdmaHandle, + edma_handle_t *rxEdmaHandle); + +/*! + * @brief Sends data using eDMA. + * + * This function sends data using eDMA. This is a non-blocking function, which returns + * right away. When all data is sent, the send callback function is called. + * + * @param base LPUART peripheral base address. + * @param handle LPUART handle pointer. + * @param xfer LPUART eDMA transfer structure. See #lpuart_transfer_t. + * @retval kStatus_Success if succeed, others failed. + * @retval kStatus_LPUART_TxBusy Previous transfer on going. + * @retval kStatus_InvalidArgument Invalid argument. + */ +status_t LPUART_SendEDMA(LPUART_Type *base, lpuart_edma_handle_t *handle, lpuart_transfer_t *xfer); + +/*! + * @brief Receives data using eDMA. + * + * This function receives data using eDMA. This is non-blocking function, which returns + * right away. When all data is received, the receive callback function is called. + * + * @param base LPUART peripheral base address. + * @param handle Pointer to lpuart_edma_handle_t structure. + * @param xfer LPUART eDMA transfer structure, refer to #lpuart_transfer_t. + * @retval kStatus_Success if succeed, others fail. + * @retval kStatus_LPUART_RxBusy Previous transfer ongoing. + * @retval kStatus_InvalidArgument Invalid argument. + */ +status_t LPUART_ReceiveEDMA(LPUART_Type *base, lpuart_edma_handle_t *handle, lpuart_transfer_t *xfer); + +/*! + * @brief Aborts the sent data using eDMA. + * + * This function aborts the sent data using eDMA. + * + * @param base LPUART peripheral base address. + * @param handle Pointer to lpuart_edma_handle_t structure. + */ +void LPUART_TransferAbortSendEDMA(LPUART_Type *base, lpuart_edma_handle_t *handle); + +/*! + * @brief Aborts the received data using eDMA. + * + * This function aborts the received data using eDMA. + * + * @param base LPUART peripheral base address. + * @param handle Pointer to lpuart_edma_handle_t structure. + */ +void LPUART_TransferAbortReceiveEDMA(LPUART_Type *base, lpuart_edma_handle_t *handle); + +/*! + * @brief Get the number of bytes that have been written to LPUART TX register. + * + * This function gets the number of bytes that have been written to LPUART TX + * register by DMA. + * + * @param base LPUART peripheral base address. + * @param handle LPUART handle pointer. + * @param count Send bytes count. + * @retval kStatus_NoTransferInProgress No send in progress. + * @retval kStatus_InvalidArgument Parameter is invalid. + * @retval kStatus_Success Get successfully through the parameter \p count; + */ +status_t LPUART_TransferGetSendCountEDMA(LPUART_Type *base, lpuart_edma_handle_t *handle, uint32_t *count); + +/*! + * @brief Get the number of bytes that have been received. + * + * This function gets the number of bytes that have been received. + * + * @param base LPUART peripheral base address. + * @param handle LPUART handle pointer. + * @param count Receive bytes count. + * @retval kStatus_NoTransferInProgress No receive in progress. + * @retval kStatus_InvalidArgument Parameter is invalid. + * @retval kStatus_Success Get successfully through the parameter \p count; + */ +status_t LPUART_TransferGetReceiveCountEDMA(LPUART_Type *base, lpuart_edma_handle_t *handle, uint32_t *count); + +/*@}*/ + +#if defined(__cplusplus) +} +#endif + +/*! @}*/ + +#endif /* _FSL_LPUART_EDMA_H_ */