PAL Interface

The interaction with the hardware and platform resources is abstracted from the core library by the definition of a platform abstraction interface.

For such a simple sensor, the platform resources that need to be provided are:

• GPIO. Digital input and output ports.
• Timer. A timer for speed calculation related functionalities.

The PAL interfaces are implemented as C++ pure virtual classes.

GPIO PAL API

• init()
• deinit()
• enableInt()
• disableInt()
• intEvent()
• read()
• write()
• enable()
• disable()

Find the complete specification for each function of the GPIO PAL interface in the PAL Interface Doxygen docs section.

Timer PAL API

• init()
• deinit()
• start()
• elapsed()
• stop()
• delay()

The Timer module is only required for the Hall Speed class.

Find the complete specification for each function of the Timer PAL interface in the PAL Interface Doxygen docs section.