X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/1afe51faa12ad17f6f72d53b492e2720cfbe992f..efd57cfe51ec0501d4378d01e019f3e23b989274:/LUFA/Scheduler/Scheduler.h diff --git a/LUFA/Scheduler/Scheduler.h b/LUFA/Scheduler/Scheduler.h index b77ec5468..72b877364 100644 --- a/LUFA/Scheduler/Scheduler.h +++ b/LUFA/Scheduler/Scheduler.h @@ -1,21 +1,21 @@ /* LUFA Library - Copyright (C) Dean Camera, 2010. - + Copyright (C) Dean Camera, 2011. + dean [at] fourwalledcubicle [dot] com - www.fourwalledcubicle.com + www.lufa-lib.org */ /* - Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com) + Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com) - Permission to use, copy, modify, distribute, and sell this + Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted - without fee, provided that the above copyright notice appear in + without fee, provided that the above copyright notice appear in all copies and that both that the copyright notice and this - permission notice and warranty disclaimer appear in supporting - documentation, and that the name of the author not be used in - advertising or publicity pertaining to distribution of the + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the software without specific, written prior permission. The author disclaim all warranties with regard to this @@ -36,7 +36,7 @@ * * \deprecated This module is deprecated and will be removed in a future library release. */ - + /** @defgroup Group_Scheduler Simple Task Scheduler - LUFA/Scheduler/Scheduler.h * * \deprecated This module is deprecated and will be removed in a future library release. @@ -45,17 +45,17 @@ * The following files must be built with any user project that uses this module: * - LUFA/Scheduler/Scheduler.c (Makefile source module name: LUFA_SRC_SCHEDULER) * - * \section Module Description + * \section Sec_ModDescription Module Description * Simple round-robbin cooperative scheduler for use in basic projects where non real-time tasks need * to be executed. Each task is executed in sequence, and can be enabled or disabled individually or as a group. * - * For a task to yield it must return, thus each task should have persistent data marked with the static attribute. + * For a task to yield it must \c return, thus each task should have persistent data marked with the \c static keyword. * * Each LUFA scheduler task should be written similar to an ISR; it should execute quickly (so that no one task * hogs the processor, preventing another from running before some sort of timeout is exceeded). Unlike normal RTOS * tasks, each LUFA scheduler task is a regular function, and thus must be designed to be called, and designed to * return to the calling scheduler function repeatedly. Data which must be preserved between task calls should be - * declared as global or (preferably) as a static local variable inside the task. + * declared as global or (preferably) as a \c static local variable inside the task. * * The scheduler consists of a task list, listing all the tasks which can be executed by the scheduler. Once started, * each task is then called one after another, unless the task is stopped by another running task or interrupt. @@ -63,10 +63,10 @@ * Usage Example: * \code * #include - * + * * TASK(MyTask1); // Task prototype * TASK(MyTask2); // Task prototype - * + * * TASK_LIST * { * { .Task = MyTask1, .TaskStatus = TASK_RUN, .GroupID = 1 }, @@ -100,14 +100,14 @@ * * @{ */ - + #ifndef __SCHEDULER_H__ #define __SCHEDULER_H__ /* Includes: */ #include #include - + #include #include "../Common/Common.h" @@ -130,8 +130,8 @@ * \endcode */ #define TASK(name) void name (void) - - /** Defines a task list array, containing one or more task entries of the type TaskEntry_t. Each task list + + /** Defines a task list array, containing one or more task entries of the type \ref TaskEntry_t. Each task list * should be encased in curly braces and ended with a comma. * * Usage Example: @@ -143,8 +143,8 @@ * } * \endcode */ - #define TASK_LIST TaskEntry_t Scheduler_TaskList[] = - + #define TASK_LIST TaskEntry_t Scheduler_TaskList[] = + /** Constant, giving the maximum delay in scheduler ticks which can be stored in a variable of type * \ref SchedulerDelayCounter_t. */ @@ -155,16 +155,16 @@ /** Task status mode constant, for passing to \ref Scheduler_SetTaskMode() or \ref Scheduler_SetGroupTaskMode(). */ #define TASK_STOP false - + /* Pseudo-Function Macros: */ #if defined(__DOXYGEN__) /** Starts the scheduler in its infinite loop, executing running tasks. This should be placed at the end - * of the user application's main() function, as it can never return to the calling function. + * of the user application's \c main() function, as it can never return to the calling function. */ void Scheduler_Start(void); - + /** Initialises the scheduler so that the scheduler functions can be called before the scheduler itself - * is started. This must be executed before any scheduler function calls other than Scheduler_Start(), + * is started. This must be executed before any scheduler function calls other than \ref Scheduler_Start(), * and can be omitted if no such functions could be called before the scheduler is started. */ void Scheduler_Init(void); @@ -176,12 +176,12 @@ /* Type Defines: */ /** Type define for a pointer to a scheduler task. */ typedef void (*TaskPtr_t)(void); - + /** Type define for a variable which can hold a tick delay value for the scheduler up to the maximum delay * possible. */ typedef uint16_t SchedulerDelayCounter_t; - + /** \brief Scheduler Task List Entry Structure. * * Structure for holding a single task's information in the scheduler task list. @@ -195,11 +195,11 @@ /* Global Variables: */ /** Task entry list, containing the scheduler tasks, task statuses and group IDs. Each entry is of type - * TaskEntry_t and can be manipulated as desired, although it is preferential that the proper Scheduler + * \ref TaskEntry_t and can be manipulated as desired, although it is preferred that the proper Scheduler * functions should be used instead of direct manipulation. */ exter TaskEntry_t Scheduler_TaskList[]; - + /** Contains the total number of tasks in the task list, irrespective of if the task's status is set to * \ref TASK_RUN or \ref TASK_STOP. * @@ -228,14 +228,14 @@ *DelayCounter = Scheduler_TickCounter; } } - + /* Function Prototypes: */ /** Determines if the given tick delay has elapsed, based on the given delay period and tick counter value. * * \param[in] Delay The delay to test for, measured in ticks. * \param[in] DelayCounter The counter which is storing the starting tick value for the delay. * - * \return Boolean true if the delay has elapsed, false otherwise. + * \return Boolean \c true if the delay has elapsed, \c false otherwise. * * Usage Example: * \code @@ -251,7 +251,7 @@ bool Scheduler_HasDelayElapsed(const uint16_t Delay, SchedulerDelayCounter_t* const DelayCounter) ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(2); - + /** Sets the task mode for a given task. * * \param[in] Task Name of the task whose status is to be changed. @@ -259,7 +259,7 @@ */ void Scheduler_SetTaskMode(const TaskPtr_t Task, const bool TaskStatus); - + /** Sets the task mode for a given task group ID, allowing for an entire group of tasks to have their * statuses changed at once. * @@ -281,7 +281,7 @@ { Scheduler_TotalTasks = TotalTasks; } - + static inline void Scheduler_GoSchedule(const uint8_t TotalTasks) ATTR_NO_RETURN ATTR_ALWAYS_INLINE ATTR_DEPRECATED; static inline void Scheduler_GoSchedule(const uint8_t TotalTasks) { @@ -290,7 +290,7 @@ for (;;) { TaskEntry_t* CurrTask = &Scheduler_TaskList[0]; - + while (CurrTask != &Scheduler_TaskList[TotalTasks]) { if (CurrTask->TaskStatus == TASK_RUN) @@ -301,12 +301,13 @@ } } #endif - + /* Disable C linkage for C++ Compilers: */ #if defined(__cplusplus) } #endif - + #endif /** @} */ +