183 lines
6.2 KiB
C
183 lines
6.2 KiB
C
/*
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* FreeRTOS V202212.00
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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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* https://www.FreeRTOS.org
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* https://github.com/FreeRTOS
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*
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*/
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/*
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* Tests the use of queue sets.
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*
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* A receive task creates a number of queues and adds them to a queue set before
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* blocking on the queue set receive. A transmit task and (optionally) an
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* interrupt repeatedly unblocks the receive task by sending messages to the
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* queues in a pseudo random order. The receive task removes the messages from
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* the queues and flags an error if the received message does not match that
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* expected. The task sends values in the range 0 to
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* queuesetINITIAL_ISR_TX_VALUE, and the ISR sends value in the range
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* queuesetINITIAL_ISR_TX_VALUE to ULONG_MAX.
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*/
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/* Standard includes. */
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#include <stdlib.h>
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#include <limits.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 "queue.h"
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/* Demo includes. */
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#include "QueueSetPolling.h"
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#if ( configUSE_QUEUE_SETS == 1 ) /* Remove tests if queue sets are not defined. */
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/* The length of each created queue. */
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#define setpollQUEUE_LENGTH 10
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/* Block times used in this demo. A block time or 0 means "don't block". */
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#define setpollDONT_BLOCK 0
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/* The ISR sends to the queue every setpollISR_TX_PERIOD ticks. */
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#define queuesetISR_TX_PERIOD ( 50UL )
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/*
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* The task that reads from the queue set.
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*/
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static void prvQueueSetReceivingTask( void * pvParameters );
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/*-----------------------------------------------------------*/
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/* The queue that is added to the set. */
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static QueueHandle_t xQueue = NULL;
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/* The handle of the queue set to which the queue is added. */
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static QueueSetHandle_t xQueueSet = NULL;
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/* Set to pdFAIL if an error is detected by any queue set task.
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* ulCycleCounter will only be incremented if xQueueSetTasksStatus equals pdPASS. */
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static volatile BaseType_t xQueueSetPollStatus = pdPASS;
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/* Counter used to ensure the task is still running. */
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static uint32_t ulCycleCounter = 0;
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/*-----------------------------------------------------------*/
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void vStartQueueSetPollingTask( void )
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{
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/* Create the queue that is added to the set, the set, and add the queue to
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* the set. */
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xQueue = xQueueCreate( setpollQUEUE_LENGTH, sizeof( uint32_t ) );
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xQueueSet = xQueueCreateSet( setpollQUEUE_LENGTH );
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if( ( xQueue != NULL ) && ( xQueueSet != NULL ) )
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{
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xQueueAddToSet( xQueue, xQueueSet );
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/* Create the task. */
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xTaskCreate( prvQueueSetReceivingTask, "SetPoll", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
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}
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}
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/*-----------------------------------------------------------*/
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static void prvQueueSetReceivingTask( void * pvParameters )
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{
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uint32_t ulReceived, ulExpected = 0;
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QueueHandle_t xActivatedQueue;
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/* Remove compiler warnings. */
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( void ) pvParameters;
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for( ; ; )
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{
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/* Is a message waiting? A block time is not used to ensure the queue
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* set is polled while it is being written to from an interrupt. */
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xActivatedQueue = xQueueSelectFromSet( xQueueSet, setpollDONT_BLOCK );
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if( xActivatedQueue != NULL )
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{
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/* Reading from the queue should pass with a zero block time as
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* this task will only run when something has been posted to a task
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* in the queue set. */
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if( xQueueReceive( xActivatedQueue, &ulReceived, setpollDONT_BLOCK ) != pdPASS )
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{
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xQueueSetPollStatus = pdFAIL;
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}
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if( ulReceived == ulExpected )
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{
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ulExpected++;
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}
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else
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{
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xQueueSetPollStatus = pdFAIL;
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}
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if( xQueueSetPollStatus == pdPASS )
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{
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ulCycleCounter++;
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}
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}
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}
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}
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/*-----------------------------------------------------------*/
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void vQueueSetPollingInterruptAccess( void )
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{
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static uint32_t ulCallCount = 0, ulValueToSend = 0;
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/* It is intended that this function is called from the tick hook
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* function, so each call is one tick period apart. */
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ulCallCount++;
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if( ulCallCount > queuesetISR_TX_PERIOD )
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{
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ulCallCount = 0;
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if( xQueueSendFromISR( xQueue, ( void * ) &ulValueToSend, NULL ) == pdPASS )
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{
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/* Send the next value next time. */
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ulValueToSend++;
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}
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}
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}
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/*-----------------------------------------------------------*/
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BaseType_t xAreQueueSetPollTasksStillRunning( void )
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{
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static uint32_t ulLastCycleCounter = 0;
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if( ulLastCycleCounter == ulCycleCounter )
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{
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xQueueSetPollStatus = pdFAIL;
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}
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ulLastCycleCounter = ulCycleCounter;
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return xQueueSetPollStatus;
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}
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/*-----------------------------------------------------------*/
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#endif /* ( configUSE_QUEUE_SETS == 1 ) */
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