From 044ad7c3987460ede48ff27afd6bdb0ca05a0432 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Mon, 4 Jul 2011 20:52:54 +0200 Subject: import at91lib from at91lib_20100901_softpack_1_9_v_1_0_svn_v15011 it's sad to see that atmel doesn't publish their svn repo or has a centralized location or even puts proper version/release info into the library itself --- usb/device/massstorage/MSDIOFifo.c | 68 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 usb/device/massstorage/MSDIOFifo.c (limited to 'usb/device/massstorage/MSDIOFifo.c') diff --git a/usb/device/massstorage/MSDIOFifo.c b/usb/device/massstorage/MSDIOFifo.c new file mode 100644 index 0000000..03f09a6 --- /dev/null +++ b/usb/device/massstorage/MSDIOFifo.c @@ -0,0 +1,68 @@ +/* ---------------------------------------------------------------------------- + * ATMEL Microcontroller Software Support + * ---------------------------------------------------------------------------- + * Copyright (c) 2008, 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 + * 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. + * ---------------------------------------------------------------------------- + */ + +//------------------------------------------------------------------------------ +// Headers +//------------------------------------------------------------------------------ + +#include "MSDIOFifo.h" + +//------------------------------------------------------------------------------ +// Internal variables +//------------------------------------------------------------------------------ + + +//------------------------------------------------------------------------------ +// Exported functions +//------------------------------------------------------------------------------ + +//------------------------------------------------------------------------------ +//! \brief Initializes a MSDIOFifo instance. +//! \param pFifo Pointer to the MSDIOFifo instance to initialize +//! \param pBuffer Pointer to a buffer used for read/write operation and +//! which must be blockSize bytes aligned. +//! \param bufferSize Total size of the buffer in bytes +//------------------------------------------------------------------------------ +void MSDIOFifo_Init(MSDIOFifo *pFifo, + void * pBuffer, unsigned short bufferSize) +{ + pFifo->pBuffer = pBuffer; + pFifo->bufferSize = bufferSize; + + pFifo->inputNdx = 0; + pFifo->outputNdx = 0; + pFifo->inputTotal = 0; + pFifo->outputTotal = 0; + + pFifo->inputState = MSDIO_IDLE; + pFifo->outputState = MSDIO_IDLE; + + pFifo->fullCnt = 0; + pFifo->nullCnt = 0; +} -- cgit v1.2.3