B4A Library Pebble Watch Library

postasat · Jan 17, 2015

Amazing !
Thank you so much.

Now, as first, I must found how to create the dictionary "key-value pairs" to send to Pebble watch.

How to use Pebblekit events ?

tchart · Jan 19, 2015

This example shows you how to use the dictionary. It sends data to the demo weather app (from the SDK - you cant downlaod it here https://github.com/pebble/pebble-sdk-examples/blob/master/weather-demo/weather/build/weather.pbw)

B4X:

#Region  Project Attributes
    #ApplicationLabel: Pebble Example
    #VersionCode: 1
    #VersionName:
    'SupportedOrientations possible values: unspecified, landscape or portrait.
    #SupportedOrientations: unspecified
    #CanInstallToExternalStorage: False
#End Region

#Region  Activity Attributes
    #FullScreen: False
    #IncludeTitle: True
#End Region

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'These variables can be accessed from all modules.
    Dim p As PebbleKit   
    Dim c As PebbleConstants
   
    Dim s As String

    Dim WEATHER_UUID As String = "28AF3DC7-E40D-490F-BEF2-29548C8B0600"   
    Dim ICON_KEY As Int = 0
    Dim TEMP_KEY As Int = 1
End Sub

Sub Globals
    'These global variables will be redeclared each time the activity is created.
    'These variables can only be accessed from this module.
End Sub

Sub Activity_Create(FirstTime As Boolean)
    'Do not forget to load the layout file created with the visual designer. For example:
    'Activity.LoadLayout("Layout1")
    p.Initialize("Pebble",WEATHER_UUID)
   
    If p.isWatchConnected = True Then
        ToastMessageShow("isWatchConnected = True",False)
    Else
        ToastMessageShow("isWatchConnected = False",False)
    End If
   
    'Dim pfw As PebbleFirmwareVersionInfo
    'pfw = p.WatchFWVersion
   
    'ToastMessageShow(pfw.Major,False)
    'ToastMessageShow(pfw.Minor,False)
    'ToastMessageShow(pfw.Point,False)
    'ToastMessageShow(pfw.Tag,False)   
   
    Dim data As PebbleDictionary
    data.Initialize   
    data.addUint8(ICON_KEY,1)
    data.addUint8(ICON_KEY,2)
    data.addString(TEMP_KEY, "99")
   
    p.sendDataToPebble(WEATHER_UUID, data)   
End Sub

Sub Activity_Resume

End Sub

Sub Activity_Pause (UserClosed As Boolean)

End Sub

postasat · Jan 21, 2015

Thank you !

and do you know how to use Pebblekit to receive data ?

I need to know which button is pressed on the watch.
I use the following example on pebble side, but I need to know how to receive data with B4A.
https://ninedof.wordpress.com/2014/04/03/pebble-sdk-2-0-tutorial-8-android-app-integration/

Thanks in advance.

tchart · Jan 21, 2015

Here is how you receive data;

B4X:

Sub Pebble_ReceiveData(transactionId As Int, data As PebbleDictionary)
ToastMessageShow(transactionId,False)
pk.sendAckToPebble(transactionId)

Dim command As String
command = data.getString(1)

If command.ToUpperCase() = "ALL ON" Then
    ll.DWOn(1)
End If
If command.ToUpperCase() = "ALL OFF" Then
    ll.DWOff(1)
End If
'ToastMessageShow("getString = " & data.getString(1),False)

End Sub

tchart · Jan 23, 2015

Here is an example app of how to detect Pebble button pushes. Example includes B4A android app to receive button pushes and pebble app (PBW) to install on your watch.

postasat · Jan 24, 2015

Perfect !

Thank you.

Ph1lJ · May 13, 2015

Can anyone help, I'm trying to install the Pebble Button watch app provided by tchart, I've tried to find the appropriate method on the Pebble site and configured the watch as required, went to use the native pebble tool as mentioned, but it will no install on my tablet that's running 4.4.2 anyone got any ideas ?

Ph1lJ · Jun 14, 2015

Oops posted this previously in wrong area, this Lib is great any chance you can create it for B4i as well ?

tchart · Jun 14, 2015

Ph1lJ, I don't have B4i and Im not sure what the process is for developing libraries for B4i. I'll have a look into it but cant promise anything.

postasat · Dec 18, 2015

Hi,
I update my pebble classic and the pebble app for android (pebble time).
Now PebbleKit.isWatchConnected() from the Android SDK always returns false.

If I simply ignore that the call returns false. I can start Pebble apps and send custom messages, everything seems to work.
If I ignore isWatchConnected(), leads my app to crash when the watch isn't connected and I try to use it.

Is it possible to update the library for the last SDK for isWatchConnected() ?

Thank you.

tchart · Dec 19, 2015

Okay Ive updated my watch too. i will update the library.

tchart · Dec 19, 2015

Here is the updated version for PebbleKit 3.0.0

postasat · Dec 29, 2015

tchart said:
Here is the updated version for PebbleKit 3.0.0

Perfect !

Thank you.

nwhitfield · Jan 11, 2016

Can I just say thanks very much for this. I got a Pebble last week (basic model can be found for £50 these days in the UK, and the Steel for £80), and have managed to get two-way comms between Pebble and one of my existing Android apps up and running really easily.

Great work.

techknight · Jan 12, 2016

How do you create a custom app for the pebble? I basically need the pebble to display and start/stop a timer clock on the tablet. Not sure how to do this?

tchart · Jan 13, 2016

techknight said:
How do you create a custom app for the pebble? I basically need the pebble to display and start/stop a timer clock on the tablet. Not sure how to do this?

You have to use the Pebble Cloud which includes a web based IDE. There is an example above which includes the C code for the pebble app.

nwhitfield · Jan 20, 2016

Here's anther snippet that might be useful to some people. To make life easy for users, I've added the .pbw file associated with my B4A app (app4pebble.pbw here) to the Files tab, so it's added to the phone when the app is installed. I then have a label on the page where people can enable the Pebble option, called pebbleInfo, with a note that a long tap will install the app on their watch.

B4X:

Sub pebbleInfo_LongClick
   ToastMessageShow("Sideloading app to your Pebble",False)
   If File.Exists(File.DirDefaultExternal,"app4pebble.pbw") = False Then
     File.Copy(File.DirAssets,"app4pebble.pbw",File.DirDefaultExternal,"app4pebble.pbw")
   End If   
   Dim i As Intent
   i.Initialize2("file://" & File.Combine(File.DirDefaultExternal,"app4pebble.pbw"),0)
   i.SetComponent("com.getpebble.android")
   i.SetType("application/octet-stream")
   StartActivity(i)
End Sub

techknight · Jan 28, 2016

tchart said:
You have to use the Pebble Cloud which includes a web based IDE. There is an example above which includes the C code for the pebble app.

So in other words, we need a B4P. I dont program in C, so that option is out :-(

That C code in the example looks long and complicated just to handle simple push a button senders.

Regardless, I love the progress being made. its awesome so far!

nwhitfield · Jan 30, 2016

I'm not a C programmer by any stretch of the imagination, but it was surprisingly simple to take the example code and work it into something. There's also a screen designer as part of the CloudPebble service which does a lot of the fiddly work for you. I was able to knock up a pretty reasonable app in a fairly short time. The example code shows how to send the buttons. Use the CloudPebble designer to create some text on the screen of the watch; pick your type size and font, and the position, and it will do all the code behind that for you.

Then, to keep the coding in C to a minimum, you use the sample to send commands to your B4A app, based on the buttons. You use a SELECT to choose what to do with the incoming commands, like stop or start the clock.

Then, you obviously need something that sends info back to the Pebble, which your C app there will put on the display. That's quite easy too. Information is sent as a Pebble Dictionary, which has keys in it, indicating which elements are there, and you add them as ints, or strings. Here's a bit of my code for that

B4X:

Sub updatePebbleDisplay()
   If pk.isWatchConnected = True Then
     Dim pStatus As PebbleDictionary
     pStatus.Initialize
     pStatus.addInt8(P_LEVELA,levelA)
     pStatus.addString(P_MODE,"some string")
     pk.sendDataToPebble(APP_UID,pStatus)
     Log("Data sent to pebble, size " & pStatus.size)
     Log(pStatus.toJsonString)
   End If
End Sub

P_LEVELA and P_MODE are Ints, defined earlier in the code; you add matching values as #defines at the top of the C code in the .h file that's created for you by the designer on CloudPebble. Then you use the inbox_received_callback to update the display, like this, assuming you have a string from the app, "some string" that you want to appear in the text box on the Pebble that you called s_modeinfo:

B4X:

static void inbox_received_callback(DictionaryIterator *iterator, void *context) {
  APP_LOG(APP_LOG_LEVEL_INFO, "Message received!");
  // update the display, based on info from the app 

  Tuple *stimmode = dict_find(iterator, P_MODE) ;

  static char modeinfo[32] ;
  
  if (stimmode) {
  // update mode info
  snprintf(modeinfo,sizeof(modeinfo), "%s", stimmode->value->cstring) ;
  text_layer_set_text(s_modeinfo,modeinfo) ;
  }
  
}

That may look fairly gibberish if you've not done C, but it's pretty straightforward, and if you can do all the hard work in the app on the phone, and merely use the buttons and display on the watch, then this sort of approach won't be too hard - you just need to think about what messages you'll send to the Pebble and how often.

B4A Library Pebble Watch Library

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