I have some basic questions to freeRTOS:
Is it possible to build a task which waits (blocks) for a semaphore (triggered by a timer interrupt or external HW interrupt) and a message queue at the same time and gets unblocked by either the semaphore or the message queue (whatever event happens first)? Or for several message queues? If that is not possible, which is the best way to implement it?
void vHandleEvents( void )
{
____xQueueReceive( xQueue, &xData, portMAX_DELAY );
____switch( xData.ulCode )
____{
________case SEMAPHORE_DATA : /* Processing as if it was the semaphore goes here. */
______________________________break;
________case QUEUE_DATA : /* Processing as if it was the queue goes here. */
ulReceivedValue = xData.ulValue;
______________________________break;
____}
}
When you send data to the queue, you send an xData object with ulCode set to QUEUE_DATA, and ulValue set to the value you want to post. Etc.