UI configuration example

[Ince1956]

Hi
I am looking for some sample code to help me with the UI. I have managed to create a checkbox using CheckboxConfig which appears on the device webpage however I can't figure out how to store the value and retrieve it when the device reboots. Also how to access the value when the device is running and connected to the signalK server.

Any help would be greatly appreciated
Thanks
Ian

[mairas]

Hi Ian,

The checkbox value should be automatically stored in a file if you set a config_path:

auto my_checkbox = new CheckboxConfig(false, "My checkbox", "/my_checkbox");

then, you can access the value at runtime by calling my_checkbox->get_value(). A CheckboxConfig itself isn't a producer, so you can't connect to it to get its value automatically when it changes. There is a PersistingObservableValue that can do that, if you need it. I think it renders bools as checkboxes as well.

[Ince1956]

Hi Matti Thanks for your prompt reply. How do you save the value and reload after reboot? Regards Ian

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On Wed, 20 Nov 2024 at 08:39, Matti Airas ***@***.***> wrote: Hi Ian, The checkbox value should be automatically stored in a file if you set a config_path: auto my_checkbox = new CheckboxConfig(false, "My checkbox", "/my_checkbox"); then, you can access the value at runtime by calling my_checkbox->get_value(). A CheckboxConfig itself isn't a producer, so you can't connect to it to get its value automatically when it changes. There is a PersistingObservableValue that can do that, if you need it. I think it renders bools as checkboxes as well. — Reply to this email directly, view it on GitHub <#792 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AH3VGY4OAV7PCEG3MFG7CHL2BRDEBAVCNFSM6AAAAABSCUF4S2VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTCMZRHE2TAOA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[mairas]

You probably already found out that this happens automatically. The web server callback calls Saveable::save() when new values are received, and likewise, the Saveable::load()is called when the object is constructed.

[Ince1956]

Thanks, I now have it working. Is there a way to get the connection status ! Regards Ian

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On Wed, 20 Nov 2024 at 08:39, Matti Airas ***@***.***> wrote: Hi Ian, The checkbox value should be automatically stored in a file if you set a config_path: auto my_checkbox = new CheckboxConfig(false, "My checkbox", "/my_checkbox"); then, you can access the value at runtime by calling my_checkbox->get_value(). A CheckboxConfig itself isn't a producer, so you can't connect to it to get its value automatically when it changes. There is a PersistingObservableValue that can do that, if you need it. I think it renders bools as checkboxes as well. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>

[mairas]

Connect to SystemStatusController. It produces an enum whenever the SK or WiFi connection status changes. (Although, if you'd be only interested in WiFi status, you might prefer registering a native Arduino Wifi.onEvent callback.)

[Ince1956]

Thanks, i just wanted to put an indicator on the lcd screen when it has connected to the signalk server

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On Wed, 20 Nov 2024 at 14:12, Matti Airas ***@***.***> wrote: Connect to SystemStatusController. It produces an enum whenever the SK or WiFi connection status changes. (Although, if you'd be only interested in WiFi status, you might prefer registering a native Arduino Wifi.onEvent callback.) — Reply to this email directly, view it on GitHub <#792 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AH3VGY6YUP5ST3FITVWUXL32BSKD7AVCNFSM6AAAAABSCUF4S2VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTCMZSGM2DGMQ> . You are receiving this because you authored the thread.Message ID: ***@***.***>