/* * FreeRTOS Kernel * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved. * * SPDX-License-Identifier: MIT * * Permission is hereby granted, free of charge, to any person obtaining a copy of * this software and associated documentation files (the "Software"), to deal in * the Software without restriction, including without limitation the rights to * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of * the Software, and to permit persons to whom the Software is furnished to do so, * subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * https://www.FreeRTOS.org * https://github.com/FreeRTOS * */ #include "FreeRTOS.h" #include "task.h" BaseType_t xPortStartScheduler( void ) { return pdTRUE; } void vPortEndScheduler( void ) { } StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack, TaskFunction_t pxCode, void * pvParameters ) { return NULL; } void vPortYield( void ) { /* Save the current Context */ /* Switch to the highest priority task that is ready to run. */ vTaskSwitchContext(); /* Start executing the task we have just switched to. */ } static void prvTickISR( void ) { /* Interrupts must have been enabled for the ISR to fire, so we have to * save the context with interrupts enabled. */ /* Maintain the tick count. */ if( xTaskIncrementTick() != pdFALSE ) { /* Switch to the highest priority task that is ready to run. */ vTaskSwitchContext(); } /* start executing the new task */ }