1-wire iface draft
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draft/overlay/iface-1wire.md
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<!--
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---
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name: 1-WIRE
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class: interface
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type: pinout
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description: Raspberry Pi One-Wire pins
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url: https://www.raspberrypi.org/documentation/hardware/raspberrypi/dpi/
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pin:
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'bcm0':
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name: Data
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-->
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# W1-GPIO - One-Wire Interface
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To enable the one-wire interface you need to add the following line to /boot/config.txt, beofre rebooting your Pi:
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```
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dtoverlay=w1-gpio
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```
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Alternatively you can enable the one-wire interface on demand using:
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```
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sudo modprobe w1-gpio
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```
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once either of the steps above has been performed, you can list the devices your Raspberry Pi can probe via (by default) GPIO4, like so:
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```
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ls /sys/bus/w1/devices/
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```
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