Bluetooth Low Energy (BLE) library

[Antti Mauranen]

Of course. But I can't promise everything works always. How is sharing done?

 

[Erel]

You can start a new thread in the libraries forum (call it BleExtended).

 

[sdujolo]

Is there any example of reading heart rate sensor?

 

[Erel]

I don't remember seeing such example.

 

[eshaulx]

I want to write an array of bytes (values from 0x00 to 0xFF) to a characteristic. I can read an array of bytes easily enough using the Characteristic.GetValue method. However in the BLE Extended Library there is no Characteristic.SetValue method. There is only a Characteristic.SetString method and the string it creates contains extra bytes that is corrupting my data. Please help.

 

[Erel]

You can use JavaObject to write an array of bytes:

Sub WriteBytes(bc As BleCharacteristic, Data() As Byte)
 Dim jo As JavaObject = bc
 jo.RunMethod("setValue", Array As Object(Data))
End Sub

 

[T0mee]

I am using a galaxy note 2 with android 4.3 and i can discover devices, connect to one and read a characteristic ...but how can i continous read ?

do i have to reconnect after a succesful BLE_CharacteristicRead ? Please help me i am stuck?!

 

[Erel]

You can use a timer and call ReadCharacteristic every x seconds to monitor changes.

 

[T0mee]

You can use a timer and call ReadCharacteristic every x seconds to monitor changes.

thank you, erel ...it worked

 

[Stulish]

Hi guys,

I just used the code from the first page and get the following error when compiling??

B4A line: 43
Dim s As BleService = Services.GetValueAt(0)
javac 1.7.0_21
src\lishsoft\android\BLE\main.java:313: error: cannot find symbol
_s.setObject((android.bluetooth.BluetoothGattService)(_services.GetValueAt((int) (0))));
^
symbol: class BluetoothGattService
location: package android.bluetooth
1 error

any ideas?

 

[Erel]

Here:

In order to use this library you will need to download platform level 18 from Android SDK and configure the IDE (Tools - Configure Paths) to use it.

 

[Chris Z]

Hello All;
This is my first posting as a new member on these forums. Has anyone just acquired an advertising packet from their BLE device without doing any other connection? There is space in the advert for a minimal data payload that would be sufficient for some sensor types. This would seem to circumvent some of the issues with maintaining the connections. Thanks,
Chris Z

 

[merlin2049er]

Great, got a little job where I need to capture and display 5 strings (UUIDs) and then put them in a table.

Can't wait to get my hands on the LightBlue Bean.
http://punchthrough.com/bean/

 

[merlin2049er]

These are a couple of the strings I need to read. The UUID is "FFF2" , "FFF4", etc...

>>> NSString *simpleData2UUIDString = @"FFF2"; // Percent charged
>>> NSString *simpleData4UUIDString = @"FFF4"; // DSC

So, I believe I need to get the string at the UUID, just a bit unsure of how to do this.

 

[Erel]

Are you able to connect to the device with the tutorial code?

 

[merlin2049er]

Yes, I get connected to the device. These are a few of the codes I need to read from the device...

"0000fff2-0000-1000-8000-00805f9b34fb"
"0000fff4-0000-1000-8000-00805f9b34fb"

 

[Erel]

What is the question?

 

[merlin2049er]

The question is how to read from the ble device? Not clear on that.

 

[Erel]

What is the output of Log(Services) in BLE_Connected event?

 

[merlin2049er]

PackageAdded: package:solarble.com
** Activity (main) Create, isFirst = true **
Supported: true
** Activity (main) Resume **
Searching for devices
Sienu Power Monitor, 1C:BA:8C:26:96:8B
Discovering services.
CR: true: 00002a00-0000-1000-8000-00805f9b34fb
cr: Sienu Power Monitor

That's the log so far, it supports ble, it discovers and connects.

As far as reading variables from the device, is that something that is broadcasted from the device on an change event or is it something I poll using a timer. (I've got a timer service).