`onewireio` – Low-level bit primitives for Maxim (formerly Dallas Semi) one-wire protocol.¶

Protocol definition is here: https://www.maximintegrated.com/en/app-notes/index.mvp/id/126

Available on these boards

8086 Commander
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AITHinker ESP32-C3S_Kit
ARAMCON Badge 2019
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ATMegaZero ESP32-S2
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AloriumTech Evo M51
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Artisense Reference Design RD00
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ndGarage[n°]Bit6:FeatherSnow
nice!nano
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uChip
uGame10

class onewireio.OneWire(pin: microcontroller.Pin)¶

Create a OneWire object associated with the given pin.

The object implements the lowest level timing-sensitive bits of the protocol.

Paramètres:: pin (Pin) – Pin connected to the OneWire bus

Note

The OneWire class is available on busio and bitbangio in CircuitPython 7.x for backwards compatibility but will be removed in CircuitPython 8.0.0.

Read a short series of pulses:

import onewireio
import board

onewire = onewireio.OneWire(board.D7)
onewire.reset()
onewire.write_bit(True)
onewire.write_bit(False)
print(onewire.read_bit())

deinit() → None¶: Deinitialize the OneWire bus and release any hardware resources for reuse.

__enter__() → OneWire¶: No-op used by Context Managers.

__exit__() → None¶: Automatically deinitializes the hardware when exiting a context. See Lifetime and ContextManagers for more info.

reset() → bool¶

Reset the OneWire bus and read presence

Renvoie:: False when at least one device is present
Type renvoyé:: bool

read_bit() → bool¶

Read in a bit

Renvoie:: bit state read
Type renvoyé:: bool

write_bit(value: bool) → None¶: Write out a bit based on value.

onewireio – Low-level bit primitives for Maxim (formerly Dallas Semi) one-wire protocol.¶

`onewireio` – Low-level bit primitives for Maxim (formerly Dallas Semi) one-wire protocol.¶