MicroBitComponent Class Reference

Class definition for MicroBitComponent. More...

#include <MicroBitComponent.h>

Inherited by MicroBitAccelerometer, MicroBitBLEManager [private], MicroBitButton, MicroBitCompass, MicroBitDisplay, MicroBitEventService, MicroBitIOPinService, MicroBitMessageBus, MicroBitMultiButton, MicroBitPin, MicroBitRadio [private], MicroBitSystemTimerCallback [private], and MicroBitThermometer.

Detailed Description

Class definition for MicroBitComponent.

All components should inherit from this class.

If a component requires regular updates, then that component can be added to the to the systemTick and/or idleTick queues. This provides a simple, extensible mechanism for code that requires periodic/occasional background processing but does not warrant the complexity of maintaining its own thread.

Two levels of support are available.

systemTick() provides a periodic callback during the micro:bit's system timer interrupt. This provides a guaranteed periodic callback, but in interrupt context and is suitable for code with lightweight processing requirements, but strict time constraints.

idleTick() provides a periodic callback whenever the scheduler is idle. This provides occasional, callbacks in the main thread context, but with no guarantees of frequency. This is suitable for non-urgent background tasks.

Components wishing to use these facilities should override the systemTick and/or idleTick functions defined here, and register their components using system_timer_add_component() fiber_add_idle_component() respectively.

Definition at line 102 of file MicroBitComponent.h.

Constructor & Destructor Documentation

Member Function Documentation