Delay Polling
=============

.. code-block:: c

    while(1)
    {
        CheckButtons();
        OSDelay(50);
    }



Delay Polling Task
==================

.. code-block:: c

    void delay_polling_task()
    {
        while(1)
        {
            CheckEnv();
            SetFlags();
            OSDelay(1);
        }
    }

Wait and Run
============

.. code-block:: c

    bool isRunning = true;

    while(1) 
    {
        OSSemPend(GoSem);
        while(isRunning)
        {
            PlayMusic();
        }
    }

* Simple pattern for controlling a loop.
* The pend makes the loop wait until its signaled.
* The boolean isRunning breaks the loop. Loop goes back to waiting.
* isRunning should be set to TRUE before signaling the semaphore.