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hathach
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src/osal/osal_freertos.h
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src/osal/osal_freertos.h
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/**************************************************************************/
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/*!
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@file osal_freeRTOS.h
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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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/** \ingroup group_osal
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* @{
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* \defgroup Group_FreeRTOS FreeRTOS
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* @{ */
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#ifndef _TUSB_OSAL_FREERTOS_H_
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#define _TUSB_OSAL_FREERTOS_H_
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//------------- FreeRTOS Headers -------------//
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#include "FreeRTOS.h"
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#include "semphr.h"
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#include "queue.h"
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#include "task.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if 0
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// Helper to determine if we are in ISR to use ISR API (only cover ARM Cortex)
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static inline bool in_isr(void)
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{
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return (SCB->ICSR & SCB_ICSR_VECTACTIVE_Msk);
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}
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#endif
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//--------------------------------------------------------------------+
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// TASK API
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//--------------------------------------------------------------------+
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#define OSAL_TASK_DEF(_name, _str, _func, _prio, _stack_sz) \
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uint8_t _name##_##buf[_stack_sz*sizeof(StackType_t)]; \
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osal_task_def_t _name = { .func = _func, .prio = _prio, .stack_sz = _stack_sz, .buf = _name##_##buf, .strname = _str };
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typedef struct
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{
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osal_task_func_t func;
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uint16_t prio;
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uint16_t stack_sz;
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void* buf;
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const char* strname;
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StaticTask_t stask;
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}osal_task_def_t;
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typedef TaskHandle_t osal_task_t;
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static inline osal_task_t osal_task_create(osal_task_def_t* taskdef)
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{
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return xTaskCreateStatic(taskdef->func, taskdef->strname, taskdef->stack_sz, NULL, taskdef->prio, (StackType_t*) taskdef->buf, &taskdef->stask);
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}
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static inline void osal_task_delay(uint32_t msec)
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{
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vTaskDelay( pdMS_TO_TICKS(msec) );
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}
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//--------------------------------------------------------------------+
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// QUEUE API
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//--------------------------------------------------------------------+
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#define OSAL_QUEUE_DEF(_name, _depth, _type) \
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uint8_t _name##_##buf[_depth*sizeof(_type)];\
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osal_queue_def_t _name = { .depth = _depth, .item_sz = sizeof(_type), .buf = _name##_##buf };
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typedef struct
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{
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uint16_t depth;
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uint16_t item_sz;
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void* buf;
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StaticQueue_t sq;
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}osal_queue_def_t;
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typedef QueueHandle_t osal_queue_t;
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static inline osal_queue_t osal_queue_create(osal_queue_def_t* qdef)
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{
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return xQueueCreateStatic(qdef->depth, qdef->item_sz, (uint8_t*) qdef->buf, &qdef->sq);
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}
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static inline void osal_queue_receive (osal_queue_t const queue_hdl, void *p_data, uint32_t msec, tusb_error_t *p_error)
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{
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uint32_t const ticks = (msec == OSAL_TIMEOUT_WAIT_FOREVER) ? portMAX_DELAY : pdMS_TO_TICKS(msec);
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(*p_error) = ( xQueueReceive(queue_hdl, p_data, ticks) ? TUSB_ERROR_NONE : TUSB_ERROR_OSAL_TIMEOUT);
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}
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static inline bool osal_queue_send_isr(osal_queue_t const queue_hdl, void const * data)
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{
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return xQueueSendToBackFromISR(queue_hdl, data, NULL);
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}
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static inline bool osal_queue_send(osal_queue_t const queue_hdl, void const * data)
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{
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return xQueueSendToBack(queue_hdl, data, OSAL_TIMEOUT_WAIT_FOREVER) == pdTRUE;
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}
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static inline void osal_queue_flush(osal_queue_t const queue_hdl)
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{
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// TODO move to thread context
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// xQueueReset(queue_hdl);
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}
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//--------------------------------------------------------------------+
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// Semaphore API
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//--------------------------------------------------------------------+
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typedef StaticSemaphore_t osal_semaphore_def_t;
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typedef SemaphoreHandle_t osal_semaphore_t;
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static inline osal_semaphore_t osal_semaphore_create(osal_semaphore_def_t* semdef)
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{
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return xSemaphoreCreateBinaryStatic(semdef);
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}
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static inline bool osal_semaphore_post_isr(osal_semaphore_t sem_hdl)
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{
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return xSemaphoreGiveFromISR(sem_hdl, NULL) == pdTRUE;
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}
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static inline bool osal_semaphore_post(osal_semaphore_t sem_hdl)
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{
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return xSemaphoreGive(sem_hdl) == pdTRUE;
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}
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static inline void osal_semaphore_wait(osal_semaphore_t sem_hdl, uint32_t msec, tusb_error_t *p_error)
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{
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uint32_t const ticks = (msec == OSAL_TIMEOUT_WAIT_FOREVER) ? portMAX_DELAY : pdMS_TO_TICKS(msec);
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(*p_error) = (xSemaphoreTake(sem_hdl, ticks) ? TUSB_ERROR_NONE : TUSB_ERROR_OSAL_TIMEOUT);
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}
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static inline void osal_semaphore_reset_isr(osal_semaphore_t const sem_hdl)
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{
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xSemaphoreTakeFromISR(sem_hdl, NULL);
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}
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//--------------------------------------------------------------------+
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// MUTEX API (priority inheritance)
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//--------------------------------------------------------------------+
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typedef SemaphoreHandle_t osal_mutex_t;
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#define osal_mutex_create(x) xSemaphoreCreateMutex()
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static inline bool osal_mutex_release(osal_mutex_t mutex_hdl)
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{
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return xSemaphoreGive(mutex_hdl);
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}
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static inline void osal_mutex_wait(osal_mutex_t mutex_hdl, uint32_t msec, tusb_error_t *p_error)
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{
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uint32_t const ticks = (msec == OSAL_TIMEOUT_WAIT_FOREVER) ? portMAX_DELAY : pdMS_TO_TICKS(msec);
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(*p_error) = (xSemaphoreTake(mutex_hdl, ticks) ? TUSB_ERROR_NONE : TUSB_ERROR_OSAL_TIMEOUT);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* _TUSB_OSAL_FREERTOS_H_ */
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/** @} */
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/** @} */
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