2013-01-22 11:41:06 +01:00
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/*
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* osal_none.h
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*
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* Created on: Jan 19, 2013
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* Author: hathach
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*/
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/*
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* Software License Agreement (BSD License)
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2013-01-27 07:50:40 +01:00
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* Copyright (c) 2013, hathach (tinyusb.net)
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2013-01-22 11:41:06 +01:00
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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 modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the tiny usb stack.
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*/
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/** \file
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* \brief TBD
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*
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* \note TBD
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*/
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/** \ingroup TBD
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* \defgroup TBD
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* \brief TBD
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*
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* @{
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*/
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#ifndef _TUSB_OSAL_NONE_H_
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#define _TUSB_OSAL_NONE_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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2013-01-30 05:35:37 +01:00
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#include "osal_common.h"
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typedef uint32_t osal_timeout_t;
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//--------------------------------------------------------------------+
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// TASK API
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// NOTES: Each blocking OSAL_NONE services such as semaphore wait,
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// queue receive embedded return statement, therefore local variable
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// retain value before/after such services needed to declare as static
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// OSAL_TASK_LOOP
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// {
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// OSAL_TASK_LOOP_BEGIN
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//
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// task body statements
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//
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// OSAL_TASK_LOOP_ENG
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// }
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//--------------------------------------------------------------------+
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#define OSAL_TASK_LOOP \
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static uint16_t state = 0;\
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switch(state)\
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#define OSAL_TASK_LOOP_BEGIN \
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case 0:
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#define OSAL_TASK_LOOP_END \
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default:\
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state = 0;
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//--------------------------------------------------------------------+
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// Semaphore API
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//--------------------------------------------------------------------+
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typedef uint8_t osal_semaphore_t;
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typedef osal_semaphore_t * osal_semaphore_handle_t;
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static inline osal_semaphore_handle_t osal_semaphore_create(osal_semaphore_t * const sem) ATTR_CONST ATTR_ALWAYS_INLINE;
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static inline osal_semaphore_handle_t osal_semaphore_create(osal_semaphore_t * const sem)
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{
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(*sem) = 0;
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return (osal_semaphore_handle_t) sem;
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}
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static inline tusb_error_t osal_semaphore_post(osal_semaphore_handle_t const sem_hdl) ATTR_ALWAYS_INLINE;
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static inline tusb_error_t osal_semaphore_post(osal_semaphore_handle_t const sem_hdl)
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{
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(*sem_hdl)++;
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return TUSB_ERROR_NONE;
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}
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#define osal_semaphore_wait(sem_hdl, msec) \
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do {\
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state = __LINE__; case __LINE__:\
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if( (*sem_hdl) == 0 ) \
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return;\
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else\
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(*sem_hdl)--;\
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}while(0)
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2013-01-23 08:57:12 +01:00
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2013-01-22 11:41:06 +01:00
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//--------------------------------------------------------------------+
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// QUEUE API
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//--------------------------------------------------------------------+
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2013-01-25 19:37:15 +01:00
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typedef struct{
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uint8_t *buf ; ///< buffer pointer
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uint16_t size ; ///< buffer size
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volatile uint16_t len ; ///< bytes in fifo
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volatile uint16_t wr_ptr ; ///< write pointer
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volatile uint16_t rd_ptr ; ///< read pointer
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} osal_queue_t;
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2013-01-30 05:35:37 +01:00
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typedef osal_queue_t * osal_queue_handle_t;
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2013-01-29 05:06:30 +01:00
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2013-01-30 05:35:37 +01:00
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// queue_send, queue_receive
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2013-01-25 19:37:15 +01:00
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#define OSAL_DEF_QUEUE(name, size)\
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osal_queue_t name;\
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uint8_t buffer_##name[size]
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2013-01-22 11:41:06 +01:00
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#ifdef __cplusplus
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}
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#endif
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#endif /* _TUSB_OSAL_NONE_H_ */
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/** @} */
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