Bangle multiple sensors readout

That's really cool! Thanks for posting it up!

For others looking, the code is at https://github.com/kristosb/WebBangle

Right now, you do:

var accel = Bangle.getAccel();
Bluetooth.println(JSON.stringify({acc:accel}));

When you get data, and then convert that back to a structure at the other end:

    var j = JSON.parse(line);
    console.log("RdData JSON: ",j.acc.x);

If you've got data coming at different rates that's not a big deal (with JS you won't end up with one Bluetooth.println 'interrupting' another one). All you need to do is have a way to figure out which data is which.

The way it's working right now, you're sending an object that looks like : {acc:{x,y,z}}

So you could tell if it's an accelerometer object by seeing if it has an acc member. So for example to handle buttons, on the Bangle.js:

// accelerometer handler
...{ 
  var accel = Bangle.getAccel();
  Bluetooth.println(JSON.stringify({acc:accel}));
}...
// buttons
setWatch(function(e) {
  Bluetooth.println(JSON.stringify({btn1:e.state}));
}, BTN1, {repeat:true});
setWatch(function(e) {
  Bluetooth.println(JSON.stringify({btn2:e.state}));
}, BTN2, {repeat:true});
setWatch(function(e) {
  Bluetooth.println(JSON.stringify({btn3:e.state}));
}, BTN3, {repeat:true});

And on the website:

    var j = JSON.parse(line);
    if ("acc" in j) console.log("RdData JSON: ",j.acc.x);
    if ("btn1" in j) console.log("BTN1",j.btn1);
    if ("btn2" in j) console.log("BTN2",j.btn2);
    if ("btn3" in j) console.log("BTN3",j.btn3);

Hope that helps!