Error handling for puck.js communication

[espruino-discuss]

Posted at 2024-04-05 by user155724

Hi,

I am trying to add puckjs support for the Open Source AsTeRICS Grid AAC software in order to have an IR device or to remote controll battery-powerd toys using the FET output (see PR#340).

Is there a way to handle bluetooth disconnect or write error when using Puck.writefunction?
I would like to notify the user in such a case and maybe trigger a reconnect.

I also tried to use Puck.connect(), but this always forces me to reconnect to the device. If there was a previous successful connection, I would like to reuse it, not having to ask the user again.

Thanks for you help.

[espruino-discuss]

Posted at 2024-04-09 by @gfwilliams

You mean using the Puck.js library? (source at https://github.com/espruino/EspruinoWebTools/blob/master/puck.js)

I believe you can use Puck. /getConnection() to get the currently active connection (you can use Puck.connect if not) and then you can do connection.on('close', function(d) { ... }) on that?

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Posted at 2024-04-21 by user155724

Hi Gordon,

Thanks for the hint, we have finally managed it by doing some modifications in our fork:
https://github.com/asterics/EspruinoWebTools

Your Espruino devices and the fact that you can easily program then via Web Bluetooth and Javascript are really awesome. This enables also a lot of possibilities for people with disabilities in combination with our AAC software AsTeRICS Grid.
We have added a UART action which allows to communicate with your devices and enable interfacing accessible toys or using the puckmote webpage and the IR-database to do environmental control for people with disabilities:
https://www.asterics.eu/manuals/asterics-grid/05_actions.html#uart-action

We will also use new feature this week in a series of workshops in Nairobi in Kenia.
I would be happy, if you could share the AsTeRICS Grid integration also in your platforms.

Thanks
Martin

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Posted at 2024-04-22 by @gfwilliams

Hi,

That's great! It's really good to see it used for this kind of thing.

It looks like the changes in your fork aren't something I could pull back as they delete a bunch of stuff and change the API, but if you did want to contribute something back that added connectBluetooth/etc without changing the rest then I'd be happy to pull that in.

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Posted at 2024-04-22 by user155724

Hi,

Oh, I was primarily thinking of adding a tutorial about accessibility use cases to the puck-js documentation.
Here are 2 documented tutorials:
https://www.asterics.eu/manuals/asterics-grid/514_uart-action-tutorials.html#uart-action-tutorials

It's up to you!
Martin