1.0 by Simon Monk

Library as downloaded 02Feb2012 22:55 UTC from http://srmonk.blogspot.com/2012/01/arduino-timer-library.html

1.1 by Jack Christensen

Changed data types of variables and functions:

o event types and indexes changed from int to int8_t.

o periods and durations changed from lon to unsigned long.

o update() and stop() functions typed as void, since they return nothing.

o pin numbers and pin values changed from int to uint8_t, this agrees with digitalWrite().

o added return values to Timer::pulse() and Timer::oscillate(uint8_t, unsigned long, uint8_t).

o changed test in Event::update() to use subtraction to avoid rollover issues.

o Updated keywords.txt file to include all functions.

1.2 by Damian Philipp

o Added a range check to Timer::stop() to avoid memory corruption.

o Added constants to <Timer.h>:

- NO_TIMER_AVAILABLE: Signals that while an event was to be queued, no free timer could be found.

- TIMER_NOT_AN_EVENT: Can be used to flag a variable that *might* contain a timer ID as

*not* containing a timer ID

o Replaced a bunch of magic numbers in <Timer.cpp> by the above constants

o Added several comments

o Added Timer::pulseImmediate(). pulseImmediate sets the pin to the specified value for the given

duration. After the duration, the pin is set to !value.

1.3 by Jack Christensen

o Added "blink2" example illustrating flashing two LEDs at different rates.

o 19Oct2013: This is the last v1.x release. It will continue to be available on GitHub

as a branch named v1.3. Future development will continue with Sandy Walsh's v2.0 which

can pass context (timer ID, etc.) to the callback functions.