STM32TimerArray

To aid the user with hardware based programmable timers, this library provides a timer array implementation for the STM32 platform.
If any problem is encountered, please open an issue.

Visit the examples folder to get started, project_setup_with_cubemx is the recommended starting point.

Environment

The library is intended for PlatformIO + STM32Cube or pure HAL projects, with C++ language. The examples contain CubeMX setup instructions for inexperienced users. If you are familiar with STM32, feel free to write setup code in pure HAL, see project_setup_with_hal.

Short overview of the library

The library works with the TimerArrayControl class handling the hardware and Timer instances holding callbacks and the required timing for them. A Timer holds the amount of ticks until the callback is fired. Timers can be attached to a TimerArrayControl, counting from that moment the callback will be fired after the specified amount of ticks elapsed in the controller. Users can set the controller's counting frequency to match their needs. Multiple controllers can be used, but a timer can only be attached to one controller at a time. Also a hardware timer can only be used by one controller at a time. ContextTimer<ContextType> behaves exactly like a Timer, but it also carries a context pointer provided for the callback. This can be useful when objects want to have their own timers.

Versions

• Planned Version 1.0.0
  Examples for all functionality.
  Stable API with proper documentation.

• Planned Version 0.5.0
  New implementation to support every STM32 timer using only the counter register and Update events.
  Work did not start yet, contact me if you want to help.

• @ Version 0.4.4 (Stable)
  API change: interrupt control for user per TimerArrayControl.
  Fix for absent STM32F4 AutoReloadPreload definition.

• Version 0.4.3
  Requests handled by interrupt disabling approach instead of interrupt generation approach.
  Stability tests.

• Version 0.4.2
  API change: changeTimerDelay function is now correct instead of keeping synchrony.
  TimerArrayControl sleep function.

• Version 0.4.1
  Bugfix: tick of empty controller missed pointer check.

• Version 0.4.0
  Refactor of TimerArrayControl. Unit tests. New manual fire and query functions.

• Version 0.3.0
  New ContextTimer for callbacks with context, avoiding the use of expensive lambdas. No unit tests yet.

• Version 0.2.0
  Interrupt safe version, but only lightly tested.

• Version 0.1.0
  Basic functionality exists.