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