82 lines
3.2 KiB
C
82 lines
3.2 KiB
C
/**************************************************************************/
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/*!
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@file osal_none.c
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@author hathach (tinyusb.org)
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@section LICENSE
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Software License Agreement (BSD License)
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Copyright (c) 2013, hathach (tinyusb.org)
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All rights reserved.
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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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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holders nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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This file is part of the tinyusb stack.
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*/
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/**************************************************************************/
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#include "tusb_option.h"
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#include "osal.h"
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#if TUSB_CFG_OS == TUSB_OS_NONE
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#define _TINY_USB_SOURCE_FILE_
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//--------------------------------------------------------------------+
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// INCLUDE
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//--------------------------------------------------------------------+
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#include "osal_none.h"
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//--------------------------------------------------------------------+
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// INTERNAL OBJECT & FUNCTION DECLARATION
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//--------------------------------------------------------------------+
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//--------------------------------------------------------------------+
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// QUEUE API
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//--------------------------------------------------------------------+
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// when queue is full, it will overwrite the oldest data in the queue
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tusb_error_t osal_queue_send(osal_queue_handle_t const queue_hdl, void const * data)
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{
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//TODO mutex lock hal_interrupt_disable
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memcpy( queue_hdl->buffer + (queue_hdl->wr_idx * queue_hdl->item_size),
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data,
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queue_hdl->item_size);
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queue_hdl->wr_idx = (queue_hdl->wr_idx + 1) % queue_hdl->depth;
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if (queue_hdl->depth == queue_hdl->count) // queue is full, 1st rd is overwritten
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{
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queue_hdl->rd_idx = queue_hdl->wr_idx; // keep full state
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}else
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{
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queue_hdl->count++;
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}
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//TODO mutex unlock hal_interrupt_enable
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return TUSB_ERROR_NONE;
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}
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#endif
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