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Hello, I did not find any reliable information on the website. Which ECMAScript Version is interpreted by Espruino? Is it ECMAScript 6 (also known as ECMAScript 2015) or a newer version?

I would like to update a value of a BLE service and therefore send a notification with acknowledgement (using indicate). The server sends the notification to the client. After the notification is successfully received by the client it should send a confirmation message back to the server which acknowledges the successful communication.

Is there already implemented a callback to handle the received acknowledgement so that the server knows that the notification was successfully transmitted to the client? I have not found something in the references. Do you have a API with all callbacks?

Kind regards

The function a() would be called inside onInit.
For example this line in a service declaration:

0x4000 : {    // Service für 

It is a part of a function which is called inside the onInit function.

@Gordon I tried now an Inline-Comment in a function which is called inside OnInit. If I use a letter like ä,ö or ü, it throws an Syntax error. This seems to be a bug.

You are right, it works well. Thanks.

Hi, I guess it is a quite easy question. How could I load the same program code after changing the battery? Currently it is reset.

I am using the native IDE

The error is caused by the word "für". If I write "fuer", everything works fine.

I am using Espruino Web IDE on Windows. The code that causes an error:

// Service für ...

If I remove this line the everything works well.

I am using Espruino Web IDE on Windows. The code that causes an error:
// Service für ...

If I remove this line the everything works well.

Hi,
I would like to inform you that there seems to be a bug in the Espruino IDE. When I try to enter a comment with ä,ö,ü, the program will not be transfered to the device. I guess that the coding is not supported. It would be nice if we could use UTF-8 signs in the JavaScript comments.

Nice updates.
One question about bonding: Is it necessary that the Puck establishes the connection to a device or is it also possible to listen for a connection establishment by a smartphone and then start the bonding?

A temperature correction would be nice of course. You could focus on Varta batteries because they are one of the best products for a fair price.

Hello, I tried to transmit the battery level of a puck using NRF.setServices.
My source code is the following:

NRF.setServices({
    0x180F : {
    0x2A19 : {
      readable : true,
      notify: true,
      value: [ Puck.getBatteryPercentage() ]
    }

This morning the battery level was 58%, a few hours later it was 64% (using NRF Connect App). How could this happen and how can I get the real battery level?

Kind regards

Thank you so much. I have looked in the API for an own function instead of a handler. I will try it later.

Thank you for your help. I have tried to connect the smartphone with the Puck. The Puck sets a service and updates it on a click. The NRF Connect app shows the data. Everything works fine. Now I would like to send data from the smartphone (central), which is connected, to the puck (peripheral).
Are there functions to do this or is it only a one-way-communication?

Thank you.

Does the Puck support Central/Peripheral mode? I have read that there are some problems connecting Android devices because they do not support Central mode. Could the Puck work as a Gatt Server and is further configuration required? That should allow more compatibility.

A nice update, really interesting functions.

This works. I tried to connect the Smartphone with the Puck instead of the connecting Puck with the smartphone.
However I always get the error "Connection timeout". Any idea how to solve this? I used the Bluetooth Mac Address I found on my Android Smartphone (Settings -> About the device -> Status).

FindDevices also returns an empty array:
NRF.findDevices(function(devices) { console.log(devices); }, 1000);

Hello, I try to debug my source code for creating a bluetooth communication. The sourcecode looks like this:

NRF.connect(addr).then(function(d) {
  device = d;
  return d.getPrimaryService("service_uuid");
}).then(function(s) {
  LED2.set();
  console.log("Service ",s);
  return s.getCharacteristic("characteristic_uuid­");
}).then(function(c) {
  return c.readValue();
}).then(function(d) {
  console.log("Got:", JSON.stringify(d.buffer));
  device.disconnect();
}).catch(function() {
  console.log("Something's broken.");
LED1.set();
});

I know that the example above is not valid.
My general question: How can I debug a bluetooth communication? The problem:
I connect the Puck with Windows to transmit the program to the puck. For establishing a connection from another device (e.g. Android Smartphone), I have to disconnect the Puck from Windows to be able to connect the Android Smartphone with the Puck. If I am disconnected, I will not see the console output on my computer. So how can I see the console result after disconnecting the puck? Could it be stored on the device?

Thank you :)

Could you tell me the size of Puck.js with the silicon case (diameter and height)? The values on the product page seem to be without the case.

It works with an APP. You simply need to listen for advertising. Take a look at stackoverflow for working code.

Can I use sleep and wake often or is that not recommended to disable and enable Bluetooth multiple times?

Is the power consumption 20uA in one hour? So that I can calculate it this way:
20uA * 24 (hours) * 365 (days) = 0,1752 A
The lifetime would be for a battery with 230mAh: 0,23 A / 0,1752 A = 1,3 years.
Is that right?

Still another question: How could I stop advertising? Should I listen for a response of a smartphone or stop advertising automatically after some minutes (max. 15-20 minutes)? What reduces the power consumption?