neotimer

Non blocking timer for Propeller 2 (Ported from Arduino)

When you use a waitms() function in a Spin program, the processor stops everything it is doing until this delay is completed.
That is called a blocking delay, because it blocks the processor until it finishes. Many times we don't want this to happen.
This timer provides a way to use time delays without blocking the processor, so it can do other things while the timer ends up.
This is called a non-blocking delay timer.

The timer provides basic functionality to implement different ways of timing in a Spin2 program.
You can use the timer in the following ways:

    A) Start-Stop-Restart Timer - You can start, stop and restart the timer until done.

       start()          will reset the time (counting time) and set is_started and is_waiting true.

       done()           will return true if the timer has reached the preset

       done_one_shot()  will return true only the first time it detects timer has reached preset

       stop()           will set is_started and is_waiting false.
                        It will also return the elapsed milliseconds since it was started

       restart()        will set the timer to is_started and is_waiting but will not reset the time.

    B) Periodic trigger - The following example will toggle pin 56 every 500ms

        timer1.init(500)
        repeat
            if(timer1.repeat_execution())
              pintoggle(56)                  

    C) Debouncer for signals - The following example shows how to debounce a signal
       coming from pin 10. Will only return true if more than 50ms have passed since
       last time it was read.

        pushbutton := 10
        timer1.init(50)
        repeat
            if(timer1.debounce( pinread(pushbutton) ))
              pintoggle(56)