/*\r
- FreeRTOS V8.1.2 - Copyright (C) 2014 Real Time Engineers Ltd.\r
- All rights reserved\r
-\r
- VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
-\r
- ***************************************************************************\r
- * *\r
- * FreeRTOS provides completely free yet professionally developed, *\r
- * robust, strictly quality controlled, supported, and cross *\r
- * platform software that has become a de facto standard. *\r
- * *\r
- * Help yourself get started quickly and support the FreeRTOS *\r
- * project by purchasing a FreeRTOS tutorial book, reference *\r
- * manual, or both from: http://www.FreeRTOS.org/Documentation *\r
- * *\r
- * Thank you! *\r
- * *\r
- ***************************************************************************\r
-\r
- This file is part of the FreeRTOS distribution.\r
-\r
- FreeRTOS is free software; you can redistribute it and/or modify it under\r
- the terms of the GNU General Public License (version 2) as published by the\r
- Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
-\r
- >>! NOTE: The modification to the GPL is included to allow you to !<<\r
- >>! distribute a combined work that includes FreeRTOS without being !<<\r
- >>! obliged to provide the source code for proprietary components !<<\r
- >>! outside of the FreeRTOS kernel. !<<\r
-\r
- FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
- FOR A PARTICULAR PURPOSE. Full license text is available from the following\r
- link: http://www.freertos.org/a00114.html\r
-\r
- 1 tab == 4 spaces!\r
-\r
- ***************************************************************************\r
- * *\r
- * Having a problem? Start by reading the FAQ "My application does *\r
- * not run, what could be wrong?" *\r
- * *\r
- * http://www.FreeRTOS.org/FAQHelp.html *\r
- * *\r
- ***************************************************************************\r
-\r
- http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
- license and Real Time Engineers Ltd. contact details.\r
-\r
- http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
- including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
- compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
-\r
- http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
- Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS\r
- licenses offer ticketed support, indemnification and middleware.\r
-\r
- http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
- engineered and independently SIL3 certified version for use in safety and\r
- mission critical applications that require provable dependability.\r
-\r
- 1 tab == 4 spaces!\r
-*/\r
+ * FreeRTOS Kernel V10.3.0\r
+ * Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.\r
+ *\r
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of\r
+ * this software and associated documentation files (the "Software"), to deal in\r
+ * the Software without restriction, including without limitation the rights to\r
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of\r
+ * the Software, and to permit persons to whom the Software is furnished to do so,\r
+ * subject to the following conditions:\r
+ *\r
+ * The above copyright notice and this permission notice shall be included in all\r
+ * copies or substantial portions of the Software.\r
+ *\r
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS\r
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR\r
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
+ *\r
+ * http://www.FreeRTOS.org\r
+ * http://aws.amazon.com/freertos\r
+ *\r
+ * 1 tab == 4 spaces!\r
+ */\r
\r
\r
#ifndef TIMERS_H\r
#error "include FreeRTOS.h must appear in source files before include timers.h"\r
#endif\r
\r
-/*lint -e537 This headers are only multiply included if the application code\r
+/*lint -save -e537 This headers are only multiply included if the application code\r
happens to also be including task.h. */\r
#include "task.h"\r
-/*lint +e956 */\r
+/*lint -restore */\r
\r
#ifdef __cplusplus\r
extern "C" {\r
* reference the subject timer in calls to other software timer API functions\r
* (for example, xTimerStart(), xTimerReset(), etc.).\r
*/\r
-typedef void * TimerHandle_t;\r
+struct tmrTimerControl; /* The old naming convention is used to prevent breaking kernel aware debuggers. */\r
+typedef struct tmrTimerControl * TimerHandle_t;\r
\r
/*\r
* Defines the prototype to which timer callback functions must conform.\r
* void * pvTimerID,\r
* TimerCallbackFunction_t pxCallbackFunction );\r
*\r
- * Creates a new software timer instance. This allocates the storage required\r
- * by the new timer, initialises the new timers internal state, and returns a\r
- * handle by which the new timer can be referenced.\r
+ * Creates a new software timer instance, and returns a handle by which the\r
+ * created software timer can be referenced.\r
+ *\r
+ * Internally, within the FreeRTOS implementation, software timers use a block\r
+ * of memory, in which the timer data structure is stored. If a software timer\r
+ * is created using xTimerCreate() then the required memory is automatically\r
+ * dynamically allocated inside the xTimerCreate() function. (see\r
+ * http://www.freertos.org/a00111.html). If a software timer is created using\r
+ * xTimerCreateStatic() then the application writer must provide the memory that\r
+ * will get used by the software timer. xTimerCreateStatic() therefore allows a\r
+ * software timer to be created without using any dynamic memory allocation.\r
*\r
* Timers are created in the dormant state. The xTimerStart(), xTimerReset(),\r
* xTimerStartFromISR(), xTimerResetFromISR(), xTimerChangePeriod() and\r
* after 100 ticks, then xTimerPeriodInTicks should be set to 100.\r
* Alternatively, if the timer must expire after 500ms, then xPeriod can be set\r
* to ( 500 / portTICK_PERIOD_MS ) provided configTICK_RATE_HZ is less than or\r
- * equal to 1000.\r
+ * equal to 1000. Time timer period must be greater than 0.\r
*\r
* @param uxAutoReload If uxAutoReload is set to pdTRUE then the timer will\r
* expire repeatedly with a frequency set by the xTimerPeriodInTicks parameter.\r
* which is "void vCallbackFunction( TimerHandle_t xTimer );".\r
*\r
* @return If the timer is successfully created then a handle to the newly\r
- * created timer is returned. If the timer cannot be created (because either\r
- * there is insufficient FreeRTOS heap remaining to allocate the timer\r
- * structures, or the timer period was set to 0) then NULL is returned.\r
+ * created timer is returned. If the timer cannot be created because there is\r
+ * insufficient FreeRTOS heap remaining to allocate the timer\r
+ * structures then NULL is returned.\r
*\r
* Example usage:\r
* @verbatim\r
*\r
* // Starting the scheduler will start the timers running as they have already\r
* // been set into the active state.\r
- * xTaskStartScheduler();\r
+ * vTaskStartScheduler();\r
+ *\r
+ * // Should not reach here.\r
+ * for( ;; );\r
+ * }\r
+ * @endverbatim\r
+ */\r
+#if( configSUPPORT_DYNAMIC_ALLOCATION == 1 )\r
+ TimerHandle_t xTimerCreate( const char * const pcTimerName, /*lint !e971 Unqualified char types are allowed for strings and single characters only. */\r
+ const TickType_t xTimerPeriodInTicks,\r
+ const UBaseType_t uxAutoReload,\r
+ void * const pvTimerID,\r
+ TimerCallbackFunction_t pxCallbackFunction ) PRIVILEGED_FUNCTION;\r
+#endif\r
+\r
+/**\r
+ * TimerHandle_t xTimerCreateStatic(const char * const pcTimerName,\r
+ * TickType_t xTimerPeriodInTicks,\r
+ * UBaseType_t uxAutoReload,\r
+ * void * pvTimerID,\r
+ * TimerCallbackFunction_t pxCallbackFunction,\r
+ * StaticTimer_t *pxTimerBuffer );\r
+ *\r
+ * Creates a new software timer instance, and returns a handle by which the\r
+ * created software timer can be referenced.\r
+ *\r
+ * Internally, within the FreeRTOS implementation, software timers use a block\r
+ * of memory, in which the timer data structure is stored. If a software timer\r
+ * is created using xTimerCreate() then the required memory is automatically\r
+ * dynamically allocated inside the xTimerCreate() function. (see\r
+ * http://www.freertos.org/a00111.html). If a software timer is created using\r
+ * xTimerCreateStatic() then the application writer must provide the memory that\r
+ * will get used by the software timer. xTimerCreateStatic() therefore allows a\r
+ * software timer to be created without using any dynamic memory allocation.\r
+ *\r
+ * Timers are created in the dormant state. The xTimerStart(), xTimerReset(),\r
+ * xTimerStartFromISR(), xTimerResetFromISR(), xTimerChangePeriod() and\r
+ * xTimerChangePeriodFromISR() API functions can all be used to transition a\r
+ * timer into the active state.\r
+ *\r
+ * @param pcTimerName A text name that is assigned to the timer. This is done\r
+ * purely to assist debugging. The kernel itself only ever references a timer\r
+ * by its handle, and never by its name.\r
+ *\r
+ * @param xTimerPeriodInTicks The timer period. The time is defined in tick\r
+ * periods so the constant portTICK_PERIOD_MS can be used to convert a time that\r
+ * has been specified in milliseconds. For example, if the timer must expire\r
+ * after 100 ticks, then xTimerPeriodInTicks should be set to 100.\r
+ * Alternatively, if the timer must expire after 500ms, then xPeriod can be set\r
+ * to ( 500 / portTICK_PERIOD_MS ) provided configTICK_RATE_HZ is less than or\r
+ * equal to 1000. The timer period must be greater than 0.\r
+ *\r
+ * @param uxAutoReload If uxAutoReload is set to pdTRUE then the timer will\r
+ * expire repeatedly with a frequency set by the xTimerPeriodInTicks parameter.\r
+ * If uxAutoReload is set to pdFALSE then the timer will be a one-shot timer and\r
+ * enter the dormant state after it expires.\r
+ *\r
+ * @param pvTimerID An identifier that is assigned to the timer being created.\r
+ * Typically this would be used in the timer callback function to identify which\r
+ * timer expired when the same callback function is assigned to more than one\r
+ * timer.\r
+ *\r
+ * @param pxCallbackFunction The function to call when the timer expires.\r
+ * Callback functions must have the prototype defined by TimerCallbackFunction_t,\r
+ * which is "void vCallbackFunction( TimerHandle_t xTimer );".\r
+ *\r
+ * @param pxTimerBuffer Must point to a variable of type StaticTimer_t, which\r
+ * will be then be used to hold the software timer's data structures, removing\r
+ * the need for the memory to be allocated dynamically.\r
+ *\r
+ * @return If the timer is created then a handle to the created timer is\r
+ * returned. If pxTimerBuffer was NULL then NULL is returned.\r
+ *\r
+ * Example usage:\r
+ * @verbatim\r
+ *\r
+ * // The buffer used to hold the software timer's data structure.\r
+ * static StaticTimer_t xTimerBuffer;\r
+ *\r
+ * // A variable that will be incremented by the software timer's callback\r
+ * // function.\r
+ * UBaseType_t uxVariableToIncrement = 0;\r
+ *\r
+ * // A software timer callback function that increments a variable passed to\r
+ * // it when the software timer was created. After the 5th increment the\r
+ * // callback function stops the software timer.\r
+ * static void prvTimerCallback( TimerHandle_t xExpiredTimer )\r
+ * {\r
+ * UBaseType_t *puxVariableToIncrement;\r
+ * BaseType_t xReturned;\r
+ *\r
+ * // Obtain the address of the variable to increment from the timer ID.\r
+ * puxVariableToIncrement = ( UBaseType_t * ) pvTimerGetTimerID( xExpiredTimer );\r
+ *\r
+ * // Increment the variable to show the timer callback has executed.\r
+ * ( *puxVariableToIncrement )++;\r
+ *\r
+ * // If this callback has executed the required number of times, stop the\r
+ * // timer.\r
+ * if( *puxVariableToIncrement == 5 )\r
+ * {\r
+ * // This is called from a timer callback so must not block.\r
+ * xTimerStop( xExpiredTimer, staticDONT_BLOCK );\r
+ * }\r
+ * }\r
+ *\r
+ *\r
+ * void main( void )\r
+ * {\r
+ * // Create the software time. xTimerCreateStatic() has an extra parameter\r
+ * // than the normal xTimerCreate() API function. The parameter is a pointer\r
+ * // to the StaticTimer_t structure that will hold the software timer\r
+ * // structure. If the parameter is passed as NULL then the structure will be\r
+ * // allocated dynamically, just as if xTimerCreate() had been called.\r
+ * xTimer = xTimerCreateStatic( "T1", // Text name for the task. Helps debugging only. Not used by FreeRTOS.\r
+ * xTimerPeriod, // The period of the timer in ticks.\r
+ * pdTRUE, // This is an auto-reload timer.\r
+ * ( void * ) &uxVariableToIncrement, // A variable incremented by the software timer's callback function\r
+ * prvTimerCallback, // The function to execute when the timer expires.\r
+ * &xTimerBuffer ); // The buffer that will hold the software timer structure.\r
+ *\r
+ * // The scheduler has not started yet so a block time is not used.\r
+ * xReturned = xTimerStart( xTimer, 0 );\r
+ *\r
+ * // ...\r
+ * // Create tasks here.\r
+ * // ...\r
+ *\r
+ * // Starting the scheduler will start the timers running as they have already\r
+ * // been set into the active state.\r
+ * vTaskStartScheduler();\r
*\r
* // Should not reach here.\r
* for( ;; );\r
* }\r
* @endverbatim\r
*/\r
-TimerHandle_t xTimerCreate( const char * const pcTimerName, const TickType_t xTimerPeriodInTicks, const UBaseType_t uxAutoReload, void * const pvTimerID, TimerCallbackFunction_t pxCallbackFunction ) PRIVILEGED_FUNCTION; /*lint !e971 Unqualified char types are allowed for strings and single characters only. */\r
+#if( configSUPPORT_STATIC_ALLOCATION == 1 )\r
+ TimerHandle_t xTimerCreateStatic( const char * const pcTimerName, /*lint !e971 Unqualified char types are allowed for strings and single characters only. */\r
+ const TickType_t xTimerPeriodInTicks,\r
+ const UBaseType_t uxAutoReload,\r
+ void * const pvTimerID,\r
+ TimerCallbackFunction_t pxCallbackFunction,\r
+ StaticTimer_t *pxTimerBuffer ) PRIVILEGED_FUNCTION;\r
+#endif /* configSUPPORT_STATIC_ALLOCATION */\r
\r
/**\r
* void *pvTimerGetTimerID( TimerHandle_t xTimer );\r
* Returns the ID assigned to the timer.\r
*\r
* IDs are assigned to timers using the pvTimerID parameter of the call to\r
- * xTimerCreated() that was used to create the timer.\r
+ * xTimerCreated() that was used to create the timer, and by calling the\r
+ * vTimerSetTimerID() API function.\r
*\r
* If the same callback function is assigned to multiple timers then the timer\r
- * ID can be used within the callback function to identify which timer actually\r
- * expired.\r
+ * ID can be used as time specific (timer local) storage.\r
*\r
* @param xTimer The timer being queried.\r
*\r
*\r
* See the xTimerCreate() API function example usage scenario.\r
*/\r
-void *pvTimerGetTimerID( TimerHandle_t xTimer ) PRIVILEGED_FUNCTION;\r
+void *pvTimerGetTimerID( const TimerHandle_t xTimer ) PRIVILEGED_FUNCTION;\r
+\r
+/**\r
+ * void vTimerSetTimerID( TimerHandle_t xTimer, void *pvNewID );\r
+ *\r
+ * Sets the ID assigned to the timer.\r
+ *\r
+ * IDs are assigned to timers using the pvTimerID parameter of the call to\r
+ * xTimerCreated() that was used to create the timer.\r
+ *\r
+ * If the same callback function is assigned to multiple timers then the timer\r
+ * ID can be used as time specific (timer local) storage.\r
+ *\r
+ * @param xTimer The timer being updated.\r
+ *\r
+ * @param pvNewID The ID to assign to the timer.\r
+ *\r
+ * Example usage:\r
+ *\r
+ * See the xTimerCreate() API function example usage scenario.\r
+ */\r
+void vTimerSetTimerID( TimerHandle_t xTimer, void *pvNewID ) PRIVILEGED_FUNCTION;\r
\r
/**\r
* BaseType_t xTimerIsTimerActive( TimerHandle_t xTimer );\r
/**\r
* TaskHandle_t xTimerGetTimerDaemonTaskHandle( void );\r
*\r
- * xTimerGetTimerDaemonTaskHandle() is only available if\r
- * INCLUDE_xTimerGetTimerDaemonTaskHandle is set to 1 in FreeRTOSConfig.h.\r
- *\r
* Simply returns the handle of the timer service/daemon task. It it not valid\r
* to call xTimerGetTimerDaemonTaskHandle() before the scheduler has been started.\r
*/\r
-TaskHandle_t xTimerGetTimerDaemonTaskHandle( void );\r
+TaskHandle_t xTimerGetTimerDaemonTaskHandle( void ) PRIVILEGED_FUNCTION;\r
\r
/**\r
* BaseType_t xTimerStart( TimerHandle_t xTimer, TickType_t xTicksToWait );\r
*\r
* // Starting the scheduler will start the timer running as it has already\r
* // been set into the active state.\r
- * xTaskStartScheduler();\r
+ * vTaskStartScheduler();\r
*\r
* // Should not reach here.\r
* for( ;; );\r
* }\r
* @endverbatim\r
*/\r
-BaseType_t xTimerPendFunctionCallFromISR( PendedFunction_t xFunctionToPend, void *pvParameter1, uint32_t ulParameter2, BaseType_t *pxHigherPriorityTaskWoken );\r
+BaseType_t xTimerPendFunctionCallFromISR( PendedFunction_t xFunctionToPend, void *pvParameter1, uint32_t ulParameter2, BaseType_t *pxHigherPriorityTaskWoken ) PRIVILEGED_FUNCTION;\r
\r
/**\r
* BaseType_t xTimerPendFunctionCall( PendedFunction_t xFunctionToPend,\r
* timer daemon task, otherwise pdFALSE is returned.\r
*\r
*/\r
-BaseType_t xTimerPendFunctionCall( PendedFunction_t xFunctionToPend, void *pvParameter1, uint32_t ulParameter2, TickType_t xTicksToWait );\r
+BaseType_t xTimerPendFunctionCall( PendedFunction_t xFunctionToPend, void *pvParameter1, uint32_t ulParameter2, TickType_t xTicksToWait ) PRIVILEGED_FUNCTION;\r
\r
/**\r
- * const char * const pcTimerGetTimerName( TimerHandle_t xTimer );\r
+ * const char * const pcTimerGetName( TimerHandle_t xTimer );\r
*\r
* Returns the name that was assigned to a timer when the timer was created.\r
*\r
*\r
* @return The name assigned to the timer specified by the xTimer parameter.\r
*/\r
-const char * pcTimerGetTimerName( TimerHandle_t xTimer ); /*lint !e971 Unqualified char types are allowed for strings and single characters only. */\r
+const char * pcTimerGetName( TimerHandle_t xTimer ) PRIVILEGED_FUNCTION; /*lint !e971 Unqualified char types are allowed for strings and single characters only. */\r
+\r
+/**\r
+ * void vTimerSetReloadMode( TimerHandle_t xTimer, const UBaseType_t uxAutoReload );\r
+ *\r
+ * Updates a timer to be either an auto-reload timer, in which case the timer\r
+ * automatically resets itself each time it expires, or a one-shot timer, in\r
+ * which case the timer will only expire once unless it is manually restarted.\r
+ *\r
+ * @param xTimer The handle of the timer being updated.\r
+ *\r
+ * @param uxAutoReload If uxAutoReload is set to pdTRUE then the timer will\r
+ * expire repeatedly with a frequency set by the timer's period (see the\r
+ * xTimerPeriodInTicks parameter of the xTimerCreate() API function). If\r
+ * uxAutoReload is set to pdFALSE then the timer will be a one-shot timer and\r
+ * enter the dormant state after it expires.\r
+ */\r
+void vTimerSetReloadMode( TimerHandle_t xTimer, const UBaseType_t uxAutoReload ) PRIVILEGED_FUNCTION;\r
+\r
+/**\r
+* UBaseType_t uxTimerGetReloadMode( TimerHandle_t xTimer );\r
+*\r
+* Queries a timer to determine if it is an auto-reload timer, in which case the timer\r
+* automatically resets itself each time it expires, or a one-shot timer, in\r
+* which case the timer will only expire once unless it is manually restarted.\r
+*\r
+* @param xTimer The handle of the timer being queried.\r
+*\r
+* @return If the timer is an auto-reload timer then pdTRUE is returned, otherwise\r
+* pdFALSE is returned.\r
+*/\r
+UBaseType_t uxTimerGetReloadMode( TimerHandle_t xTimer ) PRIVILEGED_FUNCTION;\r
+\r
+/**\r
+ * TickType_t xTimerGetPeriod( TimerHandle_t xTimer );\r
+ *\r
+ * Returns the period of a timer.\r
+ *\r
+ * @param xTimer The handle of the timer being queried.\r
+ *\r
+ * @return The period of the timer in ticks.\r
+ */\r
+TickType_t xTimerGetPeriod( TimerHandle_t xTimer ) PRIVILEGED_FUNCTION;\r
+\r
+/**\r
+* TickType_t xTimerGetExpiryTime( TimerHandle_t xTimer );\r
+*\r
+* Returns the time in ticks at which the timer will expire. If this is less\r
+* than the current tick count then the expiry time has overflowed from the\r
+* current time.\r
+*\r
+* @param xTimer The handle of the timer being queried.\r
+*\r
+* @return If the timer is running then the time in ticks at which the timer\r
+* will next expire is returned. If the timer is not running then the return\r
+* value is undefined.\r
+*/\r
+TickType_t xTimerGetExpiryTime( TimerHandle_t xTimer ) PRIVILEGED_FUNCTION;\r
\r
/*\r
* Functions beyond this part are not part of the public API and are intended\r
BaseType_t xTimerCreateTimerTask( void ) PRIVILEGED_FUNCTION;\r
BaseType_t xTimerGenericCommand( TimerHandle_t xTimer, const BaseType_t xCommandID, const TickType_t xOptionalValue, BaseType_t * const pxHigherPriorityTaskWoken, const TickType_t xTicksToWait ) PRIVILEGED_FUNCTION;\r
\r
+#if( configUSE_TRACE_FACILITY == 1 )\r
+ void vTimerSetTimerNumber( TimerHandle_t xTimer, UBaseType_t uxTimerNumber ) PRIVILEGED_FUNCTION;\r
+ UBaseType_t uxTimerGetTimerNumber( TimerHandle_t xTimer ) PRIVILEGED_FUNCTION;\r
+#endif\r
+\r
#ifdef __cplusplus\r
}\r
#endif\r
projects / freertos / blobdiff