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Fix Posix demo build and remove src directory (#213)
* Fix: build errors, remove src directory and bring all files up * Fix: Remove not needed header * Doc: fix main comments * Doc: fix comment Co-authored-by: Alfred Gedeon <gedeonag@amazon.com>
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alfred gedeon
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20 changed files with 1035 additions and 1030 deletions
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FreeRTOS/Demo/Posix_GCC/main_blinky.c
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FreeRTOS/Demo/Posix_GCC/main_blinky.c
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/*
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* FreeRTOS Kernel V10.3.0
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* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* http://www.FreeRTOS.org
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* http://aws.amazon.com/freertos
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*
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* 1 tab == 4 spaces!
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*/
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/******************************************************************************
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* NOTE 1: Windows will not be running the FreeRTOS demo threads continuously, so
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* do not expect to get real time behaviour from the FreeRTOS Windows port, or
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* this demo application. Also, the timing information in the FreeRTOS+Trace
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* logs have no meaningful units. See the documentation page for the Windows
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* port for further information:
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* http://www.freertos.org/FreeRTOS-Windows-Simulator-Emulator-for-Visual-Studio-and-Eclipse-MingW.html
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*
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* NOTE 2: This project provides two demo applications. A simple blinky style
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* project, and a more comprehensive test and demo application. The
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* mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting in main.c is used to select
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* between the two. See the notes on using mainCREATE_SIMPLE_BLINKY_DEMO_ONLY
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* in main.c. This file implements the simply blinky version. Console output
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* is used in place of the normal LED toggling.
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*
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* NOTE 3: This file only contains the source code that is specific to the
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* basic demo. Generic functions, such FreeRTOS hook functions, are defined
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* in main.c.
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******************************************************************************
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*
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* main_blinky() creates one queue, one software timer, and two tasks. It then
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* starts the scheduler.
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*
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* The Queue Send Task:
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* The queue send task is implemented by the prvQueueSendTask() function in
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* this file. It uses vTaskDelayUntil() to create a periodic task that sends
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* the value 100 to the queue every 200 milliseconds (please read the notes
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* above regarding the accuracy of timing under Windows).
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*
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* The Queue Send Software Timer:
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* The timer is an auto-reload timer with a period of two seconds. The timer's
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* callback function writes the value 200 to the queue. The callback function
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* is implemented by prvQueueSendTimerCallback() within this file.
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*
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* The Queue Receive Task:
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* The queue receive task is implemented by the prvQueueReceiveTask() function
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* in this file. prvQueueReceiveTask() waits for data to arrive on the queue.
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* When data is received, the task checks the value of the data, then outputs a
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* message to indicate if the data came from the queue send task or the queue
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* send software timer.
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*
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* Expected Behaviour:
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* - The queue send task writes to the queue every 200ms, so every 200ms the
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* queue receive task will output a message indicating that data was received
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* on the queue from the queue send task.
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* - The queue send software timer has a period of two seconds, and is reset
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* each time a key is pressed. So if two seconds expire without a key being
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* pressed then the queue receive task will output a message indicating that
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* data was received on the queue from the queue send software timer.
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*
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* NOTE: Console input and output relies on Windows system calls, which can
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* interfere with the execution of the FreeRTOS Windows port. This demo only
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* uses Windows system call occasionally. Heavier use of Windows system calls
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* can crash the port.
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*/
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#include <stdio.h>
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#include <pthread.h>
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/* Kernel includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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#include "timers.h"
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#include "semphr.h"
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/* Local includes. */
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#include "console.h"
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/* Priorities at which the tasks are created. */
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#define mainQUEUE_RECEIVE_TASK_PRIORITY ( tskIDLE_PRIORITY + 2 )
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#define mainQUEUE_SEND_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
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/* The rate at which data is sent to the queue. The times are converted from
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milliseconds to ticks using the pdMS_TO_TICKS() macro. */
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#define mainTASK_SEND_FREQUENCY_MS pdMS_TO_TICKS( 200UL )
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#define mainTIMER_SEND_FREQUENCY_MS pdMS_TO_TICKS( 2000UL )
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/* The number of items the queue can hold at once. */
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#define mainQUEUE_LENGTH ( 2 )
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/* The values sent to the queue receive task from the queue send task and the
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queue send software timer respectively. */
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#define mainVALUE_SENT_FROM_TASK ( 100UL )
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#define mainVALUE_SENT_FROM_TIMER ( 200UL )
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/*-----------------------------------------------------------*/
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/*
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* The tasks as described in the comments at the top of this file.
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*/
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static void prvQueueReceiveTask( void *pvParameters );
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static void prvQueueSendTask( void *pvParameters );
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/*
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* The callback function executed when the software timer expires.
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*/
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static void prvQueueSendTimerCallback( TimerHandle_t xTimerHandle );
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/*-----------------------------------------------------------*/
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/* The queue used by both tasks. */
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static QueueHandle_t xQueue = NULL;
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/* A software timer that is started from the tick hook. */
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static TimerHandle_t xTimer = NULL;
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/*-----------------------------------------------------------*/
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/*** SEE THE COMMENTS AT THE TOP OF THIS FILE ***/
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void main_blinky( void )
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{
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const TickType_t xTimerPeriod = mainTIMER_SEND_FREQUENCY_MS;
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/* Create the queue. */
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xQueue = xQueueCreate( mainQUEUE_LENGTH, sizeof( uint32_t ) );
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if( xQueue != NULL )
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{
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/* Start the two tasks as described in the comments at the top of this
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file. */
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xTaskCreate( prvQueueReceiveTask, /* The function that implements the task. */
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"Rx", /* The text name assigned to the task - for debug only as it is not used by the kernel. */
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configMINIMAL_STACK_SIZE, /* The size of the stack to allocate to the task. */
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NULL, /* The parameter passed to the task - not used in this simple case. */
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mainQUEUE_RECEIVE_TASK_PRIORITY,/* The priority assigned to the task. */
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NULL ); /* The task handle is not required, so NULL is passed. */
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xTaskCreate( prvQueueSendTask, "TX", configMINIMAL_STACK_SIZE, NULL, mainQUEUE_SEND_TASK_PRIORITY, NULL );
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/* Create the software timer, but don't start it yet. */
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xTimer = xTimerCreate( "Timer", /* The text name assigned to the software timer - for debug only as it is not used by the kernel. */
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xTimerPeriod, /* The period of the software timer in ticks. */
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pdTRUE, /* xAutoReload is set to pdTRUE. */
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NULL, /* The timer's ID is not used. */
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prvQueueSendTimerCallback );/* The function executed when the timer expires. */
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if( xTimer != NULL )
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{
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xTimerStart( xTimer, 0 );
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}
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/* Start the tasks and timer running. */
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vTaskStartScheduler();
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}
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/* If all is well, the scheduler will now be running, and the following
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line will never be reached. If the following line does execute, then
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there was insufficient FreeRTOS heap memory available for the idle and/or
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timer tasks to be created. See the memory management section on the
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FreeRTOS web site for more details. */
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for( ;; );
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}
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/*-----------------------------------------------------------*/
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static void prvQueueSendTask( void *pvParameters )
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{
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TickType_t xNextWakeTime;
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const TickType_t xBlockTime = mainTASK_SEND_FREQUENCY_MS;
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const uint32_t ulValueToSend = mainVALUE_SENT_FROM_TASK;
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/* Prevent the compiler warning about the unused parameter. */
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( void ) pvParameters;
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/* Initialise xNextWakeTime - this only needs to be done once. */
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xNextWakeTime = xTaskGetTickCount();
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for( ;; )
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{
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/* Place this task in the blocked state until it is time to run again.
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The block time is specified in ticks, pdMS_TO_TICKS() was used to
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convert a time specified in milliseconds into a time specified in ticks.
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While in the Blocked state this task will not consume any CPU time. */
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vTaskDelayUntil( &xNextWakeTime, xBlockTime );
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/* Send to the queue - causing the queue receive task to unblock and
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write to the console. 0 is used as the block time so the send operation
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will not block - it shouldn't need to block as the queue should always
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have at least one space at this point in the code. */
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xQueueSend( xQueue, &ulValueToSend, 0U );
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}
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}
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/*-----------------------------------------------------------*/
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static void prvQueueSendTimerCallback( TimerHandle_t xTimerHandle )
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{
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const uint32_t ulValueToSend = mainVALUE_SENT_FROM_TIMER;
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/* This is the software timer callback function. The software timer has a
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period of two seconds and is reset each time a key is pressed. This
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callback function will execute if the timer expires, which will only happen
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if a key is not pressed for two seconds. */
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/* Avoid compiler warnings resulting from the unused parameter. */
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( void ) xTimerHandle;
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/* Send to the queue - causing the queue receive task to unblock and
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write out a message. This function is called from the timer/daemon task, so
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must not block. Hence the block time is set to 0. */
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xQueueSend( xQueue, &ulValueToSend, 0U );
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}
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/*-----------------------------------------------------------*/
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static void prvQueueReceiveTask( void *pvParameters )
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{
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uint32_t ulReceivedValue;
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/* Prevent the compiler warning about the unused parameter. */
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( void ) pvParameters;
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for( ;; )
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{
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/* Wait until something arrives in the queue - this task will block
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indefinitely provided INCLUDE_vTaskSuspend is set to 1 in
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FreeRTOSConfig.h. It will not use any CPU time while it is in the
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Blocked state. */
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xQueueReceive( xQueue, &ulReceivedValue, portMAX_DELAY );
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/* To get here something must have been received from the queue, but
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is it an expected value? Normally calling printf() from a task is not
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a good idea. Here there is lots of stack space and only one task is
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using console IO so it is ok. However, note the comments at the top of
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this file about the risks of making Windows system calls (such as
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console output) from a FreeRTOS task. */
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if( ulReceivedValue == mainVALUE_SENT_FROM_TASK )
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{
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console_print( "Message received from task\n" );
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}
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else if( ulReceivedValue == mainVALUE_SENT_FROM_TIMER )
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{
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console_print( "Message received from software timer\n" );
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}
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else
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{
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console_print( "Unexpected message\n" );
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}
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}
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}
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/*-----------------------------------------------------------*/
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