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Updated Using Tuhi (markdown)

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Peter Hutterer 2019-07-16 10:03:22 +10:00
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Using-Tuhi.md

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This is a quickstart to get you up and running with Tuhi. For details, see the [Terminology](#terminology) section below.
This is a quickstart to get you up and running with Tuhi. For details, see the [[Terminology]] page.
# Tuhi
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```
And the SVG file will be available in your `$PWD`.
# Terminology
Wacom Ink devices are Bluetooth LE devices and all communication is wireless. Tuhi uses a number of specific terms to interact with those devices:
- `Searching` means Tuhi is looking for **new** devices (i.e. those not previously connected with Tuhi)
- `Registering` means Tuhi connects to a **new** device for the first time.
- `Listening` means Tuhi is listening to data from a registered device.
These three terms reflect some of the user interaction with the device. The actual download of data is handled automatically while Tuhi is listening to a device.
Wacom Ink devices can only be associated with one application at a time. If you are using e.g. Wacom Inkspace, you cannot use Tuhi at the same time (and vice versa). You will need to re-`register` the device every time you switch between applications.
## Searching
When `Searching`, Tuhi identifies any Bluetooth LE devices within range of the host system. Devices that match the supported devices will be made available to register.
For a device to be identified during `Searching`, **hold the device's button until the blue light blinks**.
## Registering
When `Registering` a device, Tuhi picks a randomly-generated UUID and sends that to the tablet. Future communication with the tablet needs to include that UUID. This is not registering the device with some cloud service, vendor, or other service. It is communication between Tuhi and the firmware on the device. It is merely a process of "your ID is now $foo" followed by "hi $foo, I want to connect".
Unlike other Bluetooth devices, Tuhi-compatible devices do not need to be "paired". Hence the choice of the term `Register`.
For a device to be able to register, **hold the device's button until the blue light blinks** and make sure Tuhi is `Searching`. During `Register`, you will need to press the device's button when prompted.
## Listening
Once a device has been registered with Tuhi, you can start and stop `Listening` to the device. While listening, Tuhi will download any drawings from that device in the background and make those drawings available through the DBus interface.