text: /*
   * FreeRTOS Kernel V10.4.1
   * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
   *
   * 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.
   *
   * http://www.FreeRTOS.org
   * http://aws.amazon.com/freertos
   *
   * 1 tab == 4 spaces!
   */
  
  #include <atmel_start.h>
  
  /* Scheduler include files. */
  #include "FreeRTOS.h"
  #include "task.h"
  
  /* Tests. */
  #include "regtest.h"
  #include "integer.h"
  #include "PollQ.h"
  #include "partest.h"
  
  /* Priority definitions for most of the tasks in the demo application. */
  #define mainCHECK_TASK_PRIORITY			( tskIDLE_PRIORITY + 3 )
  #define mainQUEUE_POLL_PRIORITY			( tskIDLE_PRIORITY + 2 )
  #define mainLED_BLINK_PRIORITY			( tskIDLE_PRIORITY + 2 )
  
  /* The period between executions of the check task. */
  #define mainCHECK_PERIOD				( ( TickType_t ) 1000  )
  
  /* The period to toggle LED. */
  #define mainBLINK_LED_OK_HALF_PERIOD	( ( TickType_t ) 100 )
  
  /* The task function for the "Check" task. */
  static void vErrorChecks( void *pvParameters );
  
  /* The task function for blinking LED at a certain frequency. */
  static void vBlinkOnboardUserLED( void *pvParameters );
  
  int main(void)
  {
  	/* Initializes MCU, drivers and middleware.
  	This is generated from Atmel START project. */
  	atmel_start_init();
  
  	/* Standard register test. */
  	vStartRegTestTasks();
  
  	/* Optionally enable below tests. This port only has 2KB RAM. */
  	vStartIntegerMathTasks( tskIDLE_PRIORITY );
  	vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
  	xTaskCreate( vBlinkOnboardUserLED, "LED", 50, NULL, mainCHECK_TASK_PRIORITY, NULL );
  
  	/* Create the tasks defined within this file. */
  	xTaskCreate( vErrorChecks, "Check", configMINIMAL_STACK_SIZE, NULL, mainLED_BLINK_PRIORITY, NULL );
  
  	/* In this port, to use preemptive scheduler define configUSE_PREEMPTION
  	as 1 in portmacro.h.  To use the cooperative scheduler define
  	configUSE_PREEMPTION as 0. */
  	vTaskStartScheduler();
  }
  
  /*-----------------------------------------------------------*/
  static void vErrorChecks( void *pvParameters )
  {
  static UBaseType_t uxErrorHasOccurred = 0;
  BaseType_t xFirstTimeCheck = pdTRUE;
  
  	/* The parameters are not used. */
  	( void ) pvParameters;
  
  	/* Cycle for ever, delaying then checking all the other tasks are still
  	operating without error. */
  	for( ;; )
  	{
  		if( xAreRegTestTasksStillRunning() != pdTRUE )
  		{
  			uxErrorHasOccurred |= 0x01U ;
  		}
  		if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
  		{
  			uxErrorHasOccurred |= ( 0x01U << 1);
  		}
  		if( xArePollingQueuesStillRunning() != pdTRUE )
  		{
  			uxErrorHasOccurred |= ( 0x01U << 2);
  		}
  
  		/* When check task runs before any other tasks, all above checks shall fail.
  		To avoid false alarm, clear errors upon first entry. */
  		if ( xFirstTimeCheck == pdTRUE )
  		{
  			uxErrorHasOccurred = 0;
  			xFirstTimeCheck = pdFALSE;
  		}
  
  		/* Could set break point at below line to verify uxErrorHasOccurred. */
  		vTaskDelay( mainCHECK_PERIOD );
  	}
  }
  
  /*-----------------------------------------------------------*/
  static void vBlinkOnboardUserLED( void *pvParameters )
  {
  	/* The parameters are not used. */
  	( void ) pvParameters;
  
  	/* Cycle forever, blink onboard user LED at a certain frequency. */
  	for( ;; )
  	{
  		vParTestToggleLED( 0 );
  
  		vTaskDelay( mainBLINK_LED_OK_HALF_PERIOD );
  	}
  
  }
  
  /*-----------------------------------------------------------*/
  
  void vApplicationIdleHook( void )
  {
  	/* Doesn't do anything yet. */
  }
  
  /*-----------------------------------------------------------*/
  
  void vApplicationStackOverflowHook( TaskHandle_t xTask, char *pcTaskName )
  {
  	/* When stack overflow happens, trap instead of attempting to recover.
  	Read input arguments to learn about the offending task. */
  	for( ;; )
  	{
  		/* Doesn't do anything yet. */
  	}
  }
  
  /*-----------------------------------------------------------*/
  
  /* configSUPPORT_STATIC_ALLOCATION is set to 1, so the application must provide an
  implementation of vApplicationGetIdleTaskMemory() to provide the memory that is
  used by the Idle task. */
  void vApplicationGetIdleTaskMemory( StaticTask_t **ppxIdleTaskTCBBuffer,
                                      StackType_t **ppxIdleTaskStackBuffer,
                                      uint32_t *pulIdleTaskStackSize )
  {
  /* If the buffers to be provided to the Idle task are declared inside this
  function then they must be declared static -- otherwise they will be allocated on
  the stack and so not exists after this function exits. */
  static StaticTask_t xIdleTaskTCB;
  static StackType_t uxIdleTaskStack[ configMINIMAL_STACK_SIZE ];
  
      /* Pass out a pointer to the StaticTask_t structure in which the Idle task's
      state will be stored. */
      *ppxIdleTaskTCBBuffer = &xIdleTaskTCB;
  
      /* Pass out the array that will be used as the Idle task's stack. */
      *ppxIdleTaskStackBuffer = uxIdleTaskStack;
  
      /* Pass out the size of the array pointed to by *ppxIdleTaskStackBuffer.
      Note that, as the array is necessarily of type StackType_t,
      configMINIMAL_STACK_SIZE is specified in words, not bytes. */
      *pulIdleTaskStackSize = configMINIMAL_STACK_SIZE;
  }
  /*-----------------------------------------------------------*/
  
  /* configSUPPORT_STATIC_ALLOCATION and configUSE_TIMERS are both set to 1, so the
  application must provide an implementation of vApplicationGetTimerTaskMemory()
  to provide the memory that is used by the Timer service task. */
  void vApplicationGetTimerTaskMemory( StaticTask_t **ppxTimerTaskTCBBuffer,
                                       StackType_t **ppxTimerTaskStackBuffer,
                                       uint32_t *pulTimerTaskStackSize )
  {
  /* If the buffers to be provided to the Timer task are declared inside this
  function then they must be declared static -- otherwise they will be allocated on
  the stack and so not exists after this function exits. */
  static StaticTask_t xTimerTaskTCB;
  static StackType_t uxTimerTaskStack[ configTIMER_TASK_STACK_DEPTH ];
  
      /* Pass out a pointer to the StaticTask_t structure in which the Timer
      task's state will be stored. */
      *ppxTimerTaskTCBBuffer = &xTimerTaskTCB;
  
      /* Pass out the array that will be used as the Timer task's stack. */
      *ppxTimerTaskStackBuffer = uxTimerTaskStack;
  
      /* Pass out the size of the array pointed to by *ppxTimerTaskStackBuffer.
      Note that, as the array is necessarily of type StackType_t,
      configTIMER_TASK_STACK_DEPTH is specified in words, not bytes. */
      *pulTimerTaskStackSize = configTIMER_TASK_STACK_DEPTH;
  }
  /*-----------------------------------------------------------*/
  