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81 lines
2.9 KiB
C
81 lines
2.9 KiB
C
/* ----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support
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* ----------------------------------------------------------------------------
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* Copyright (c) 2009, Atmel Corporation
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Atmel's name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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/**
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* \file
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*
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* Provide a routine for asynchronous transfer.
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*
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*/
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#ifndef _ASYNC_
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#define _ASYNC_
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/*----------------------------------------------------------------------------
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* Headers
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*----------------------------------------------------------------------------*/
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#include <stdint.h>
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/*----------------------------------------------------------------------------
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* Definition
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*----------------------------------------------------------------------------*/
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/** Transfer is still pending.*/
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#define ASYNC_STATUS_PENDING 0xFF
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*----------------------------------------------------------------------------
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* Type
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*----------------------------------------------------------------------------*/
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/** \brief Asynchronous transfer descriptor. */
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typedef struct _Async
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{
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/** Asynchronous transfer status.*/
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volatile uint8_t status ;
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/** Callback function to invoke when transfer completes or fails.*/
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void *callback ;
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/** Driver storage area; do not use.*/
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uint32_t pStorage[4] ;
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} Async ;
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/*----------------------------------------------------------------------------
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* Global functions
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*----------------------------------------------------------------------------*/
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extern uint32_t ASYNC_IsFinished( Async* pAsync ) ;
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#ifdef __cplusplus
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}
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#endif
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#endif /* #ifndef _ASYNC_ */
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