text: /*
   * FreeRTOS V202111.00
   * 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!
   */
  
  /******************************************************************************
   * This project provides two demo applications.  A simple blinky style project,
   * and a more comprehensive test and demo application.  The
   * mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting (defined in this file) is used to
   * select between the two.  The simply blinky demo is implemented and described
   * in main_blinky.c.  The more comprehensive test and demo application is
   * implemented and described in main_full.c.
   *
   * This file implements the code that is not demo specific, including the
   * hardware setup and standard FreeRTOS hook functions.
   *
   * ENSURE TO READ THE DOCUMENTATION PAGE FOR THIS PORT AND DEMO APPLICATION ON
   * THE http://www.FreeRTOS.org WEB SITE FOR FULL INFORMATION ON USING THIS DEMO
   * APPLICATION, AND ITS ASSOCIATE FreeRTOS ARCHITECTURE PORT!
   *
   */
  
  /* Scheduler include files. */
  #include "FreeRTOS.h"
  #include "task.h"
  #include "semphr.h"
  
  /* Standard demo includes. */
  #include "TimerDemo.h"
  #include "QueueOverwrite.h"
  #include "EventGroupsDemo.h"
  #include "IntSemTest.h"
  #include "TaskNotify.h"
  
  #include "main.h"
  
  /* Library includes. */
  #include <stdio.h>
  #include "pico/stdlib.h"
  #if ( mainRUN_ON_CORE == 1 )
  #include "pico/multicore.h"
  #endif
  
  /* Set mainCREATE_SIMPLE_BLINKY_DEMO_ONLY to one to run the simple blinky demo,
  or 0 to run the more comprehensive test and demo application. */
  
  /*-----------------------------------------------------------*/
  
  /*
   * Configure the hardware as necessary to run this demo.
   */
  static void prvSetupHardware( void );
  
  /*
   * main_blinky() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1.
   * main_full() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 0.
   */
  #if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1
  extern void main_blinky( void );
  #else
  extern void main_full( void );
  #endif /* #if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1 */
  
  /* Prototypes for the standard FreeRTOS callback/hook functions implemented
  within this file. */
  void vApplicationMallocFailedHook( void );
  void vApplicationIdleHook( void );
  void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName );
  void vApplicationTickHook( void );
  
  /*-----------------------------------------------------------*/
  
  void vLaunch( void)
  {
      /* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top
  of this file. */
  #if( mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1 )
      {
          main_blinky();
      }
  #else
      {
          main_full();
      }
  #endif
  }
  
  int main( void )
  {
      /* Configure the hardware ready to run the demo. */
      prvSetupHardware();
      const char *rtos_name;
  #if ( portSUPPORT_SMP == 1 )
      rtos_name = "FreeRTOS SMP";
  #else
      rtos_name = "FreeRTOS";
  #endif
  
  #if ( portSUPPORT_SMP == 1 ) && ( configNUM_CORES == 2 )
      printf("%s on both cores:\n", rtos_name);
      vLaunch();
  #endif
  
  #if ( mainRUN_ON_CORE == 1 )
      printf("%s on core 1:\n", rtos_name);
      multicore_launch_core1(vLaunch);
      while (true);
  #else
      printf("%s on core 0:\n", rtos_name);
      vLaunch();
  #endif
  
      return 0;
  }
  /*-----------------------------------------------------------*/
  
  static void prvSetupHardware( void )
  {
      stdio_init_all();
      gpio_init(PICO_DEFAULT_LED_PIN);
      gpio_set_dir(PICO_DEFAULT_LED_PIN, 1);
      gpio_put(PICO_DEFAULT_LED_PIN, !PICO_DEFAULT_LED_PIN_INVERTED);
  }
  /*-----------------------------------------------------------*/
  
  void vApplicationMallocFailedHook( void )
  {
      /* Called if a call to pvPortMalloc() fails because there is insufficient
      free memory available in the FreeRTOS heap.  pvPortMalloc() is called
      internally by FreeRTOS API functions that create tasks, queues, software
      timers, and semaphores.  The size of the FreeRTOS heap is set by the
      configTOTAL_HEAP_SIZE configuration constant in FreeRTOSConfig.h. */
  
      /* Force an assert. */
      configASSERT( ( volatile void * ) NULL );
  }
  /*-----------------------------------------------------------*/
  
  void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
  {
      ( void ) pcTaskName;
      ( void ) pxTask;
  
      /* Run time stack overflow checking is performed if
      configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2.  This hook
      function is called if a stack overflow is detected. */
  
      /* Force an assert. */
      configASSERT( ( volatile void * ) NULL );
  }
  /*-----------------------------------------------------------*/
  
  void vApplicationIdleHook( void )
  {
      volatile size_t xFreeHeapSpace;
  
      /* This is just a trivial example of an idle hook.  It is called on each
      cycle of the idle task.  It must *NOT* attempt to block.  In this case the
      idle task just queries the amount of FreeRTOS heap that remains.  See the
      memory management section on the http://www.FreeRTOS.org web site for memory
      management options.  If there is a lot of heap memory free then the
      configTOTAL_HEAP_SIZE value in FreeRTOSConfig.h can be reduced to free up
      RAM. */
      xFreeHeapSpace = xPortGetFreeHeapSize();
  
      /* Remove compiler warning about xFreeHeapSpace being set but never used. */
      ( void ) xFreeHeapSpace;
  }
  /*-----------------------------------------------------------*/
  
  void vApplicationTickHook( void )
  {
  #if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 0
      {
          /* The full demo includes a software timer demo/test that requires
          prodding periodically from the tick interrupt. */
          #if (mainENABLE_TIMER_DEMO == 1)
          vTimerPeriodicISRTests();
          #endif
  
          /* Call the periodic queue overwrite from ISR demo. */
          #if (mainENABLE_QUEUE_OVERWRITE == 1)
          vQueueOverwritePeriodicISRDemo();
          #endif
  
          /* Call the periodic event group from ISR demo. */
          #if (mainENABLE_EVENT_GROUP == 1)
          vPeriodicEventGroupsProcessing();
          #endif
  
          /* Call the code that uses a mutex from an ISR. */
          #if (mainENABLE_INTERRUPT_SEMAPHORE == 1)
          vInterruptSemaphorePeriodicTest();
          #endif
  
          /* Call the code that 'gives' a task notification from an ISR. */
          #if (mainENABLE_TASK_NOTIFY == 1)
          xNotifyTaskFromISR();
          #endif
      }
  #endif
  }
  