------
- Updated for compatibility with pifacecommon v4.0.0 (which uses the MCP23S17
class).
- All occurrences of `board_num` have been replaced with `hardware_addr` which
is more appropriate.
- PiFace Digital is initialised when you instantiate the object. **You do not
need to call pifacedigitalio.init() any more unless you're using digital_read
or digital_write.**
- PiFaceDigital inherits registers from MCP23S17 so you can access all the
registers on the chip. For example GPPUP:
>>> pfd = PiFaceDigital()
>>> pfd.gppub.value = 0xff
>>> pfd.gppub.bits[4].value = 1
- InputEventListener now requires that you provide a chip object, not
a hardware_addr (board_num). This defaults to PiFaceDigital(hardware_addr=0).
- Interrupt events contain a chip object representing the calling chip instead
of the hardware_addr (board_num). You can still access the
hardware_addr (board_num) like so:
>>> def my_callback(event):
... print(event.chip.hardware_addr)
- Removed LED, Relay and Switch classes. They added arbitrary restrictions and
were not very useful. `pifacecommon.mcp23s17.MCP23S17RegisterBit` is more
appropriate.
- Updated examples to reflect new changes.
- See the docs (particularly the examples) for more information.