user75772

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• GATT service with Ruuvitag

  @user75772 started

  • 4 comments
  • 5,145 views

  @Gordon replied
• GATT service with Ruuvitag

  in Interfacing • 7 years, 8 months

  

  Thanks @AntiCat !! I'll give that a try 😁

  Turns out it was a rookie mistake of not disconnecting form the IDE 🙈😝 Working now! Using bleat.webbluetooth I am able to connect to the GATT service and pull characteristics and descriptor 🎉

  Now I need to decode the data... Any ideas there? 😝

• GATT service with Ruuvitag

  in Interfacing • 7 years, 8 months

  

  Hi there!

  I'm trying to set up a GATT service on my ruuvitag. I have successfully installed the firmware following https://www.espruino.com/Ruuvitag and I can talk with the device and upload code 🎉

  I've got the following code running:

  var Ruuvitag = require("Ruuvitag");
  
  NRF.setServices({
    0xff20: {
      0xff21: {
        value: Math.round(Ruuvitag.getEnvData().temp),
        readable: true,
        notify: true
      }
    }
  });
  setInterval(function () {
    NRF.updateServices({
      0xff20: {
        0xff21: {
          value: Math.round(Ruuvitag.getEnvData().temp),
          notify: true
        }
      }
    });
  }, 1000);
  

  What I am wondering however, is how I can connect to this service using a node.js application. I've been trying the espurino module but can't figure out how to use it to "scan" for GATT services. Using the bleat module I can find other BLE devices, but not my ruuvitag running espurino.

  Any ideas what I might be getting wrong?

  NB! I'm new to this whole BLE and GATT stuff, so I might be confused about a few things 😝