Receiving Data on the Phone via Bluetooth

Hello everyone,

I would appreciate some help. I'm trying to use the bangle.js on a school project, where I want to stream data to a website. The problem is that I need to send that data to a phone first and then have it be sent to the website.
I did not find many ways for the watch to communicate with the phone. I saw and tested with the Gadgetbridge, but did not find a repository with the code for bangle.js, to be able to customise it.
I also saw a project off someone doing something similar and using the Bangle Run app, I believe, but I'm not sure if It could be useful.

I only need a way to store the data received by Bluetooth.

If anyone has any advice, it would be greatly appreciated.

Sincerely,
Jorge Gonçalves

The most direct solution would be coding your own app based on examples from the internet, but requires mobile developer skills.
Eg.
https://github.com/NordicSemiconductor/Android-BLE-Library

Another option, if you have a device like a raspberry pi laying around, could be to install EspruinoHub which acts as a bluetooth -> mqtt bridge. Then you would install a macro/automation based program on your phone such as Tasker/Macrodroid etc and create rules for interacting with the mqtt system. Mqtt is wifi protocol.

Hi,

Do you need it to be able to send data over 'in the background', or would it be acceptable to have the phone turned on and showing a webpage?

Because if you could have the webpage showing then you can just use Web Bluetooth and it's pretty easy. For example there's some code for real-time streaming at http://www.espruino.com/Bangle.js+Data+Streaming

Otherwise you're going to have to write some kind of Android app as @d3nd3-o0 says. If you don't want to get stuck into full-on Android development you might have some luck with DroidScript I guess: https://www.espruino.com/DroidScript+Puck.js

For Gadgetbridge, if you did want to customise it the code is at https://codeberg.org/Freeyourgadget/Gadgetbridge

The Bangle.js code you care about is in https://codeberg.org/Freeyourgadget/Gadgetbridge/src/branch/master/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/banglejs/BangleJSDeviceSupport.java and you could just add some code to handleUartRxJSON to handle communication from the Bangle

The developer doesn't use GitHub because they blocked him temporarily due to a fraudulent DMCA request and it scared him off.