GPIO Zero also provides several “internal” devices which represent facilities provided by the operating system itself. These can be used to react to things like the time of day, or whether a server is available on the network.
These devices are experimental and their API is not yet considered stable. We welcome any comments from testers, especially regarding new “internal devices” that you’d find useful!
TimeOfDay(start_time, end_time, utc=True)¶
The following example turns on a lamp attached to an
Energenieplug between 7 and 8 AM:
from datetime import time from gpiozero import TimeOfDay, Energenie from signal import pause lamp = Energenie(0) morning = TimeOfDay(time(7), time(8)) morning.when_activated = lamp.on morning.when_deactivated = lamp.off pause()
InternalDeviceto provide a device which is active when a host on the network can be pinged.
The following example lights an LED while a server is reachable (note the use of
source_delayto ensure the server is not flooded with pings):
from gpiozero import PingServer, LED from signal import pause server = PingServer('my-server') led = LED(4) led.source_delay = 1 led.source = server.values pause()
Parameters: host (str) – The hostname or IP address to attempt to ping.
The classes in the sections above are derived from a series of base classes, some of which are effectively abstract. The classes form the (partial) hierarchy displayed in the graph below:
The following sections document these base classes for advanced users that wish to construct classes for their own devices.