Bluetooth Low Energy (BLE) library

A

Antti Mauranen

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• Dec 10, 2013

• #61

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

 

Erel

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• Dec 10, 2013

• #62

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

 

S

sdujolo

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• Jan 24, 2014

• #63

Is there any example of reading heart rate sensor?

 

Erel

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• Jan 24, 2014

• #64

I don't remember seeing such example.

 

E

eshaulx

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• Feb 24, 2014

• #65

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

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• Feb 24, 2014

• #66

You can use JavaObject to write an array of bytes:

B4X:

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

 

T

T0mee

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• Mar 30, 2014

• #67

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

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• Mar 31, 2014

• #68

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

 

T

T0mee

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• Apr 1, 2014

• #69

Erel said:

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

Click to expand...

thank you, erel ...it worked

 

Stulish

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• Apr 7, 2014

• #70

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

Click to expand...

any ideas?

 

Erel

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• Apr 8, 2014

• #71

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.

Click to expand...

 

C

Chris Z

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• Jul 16, 2014

• #72

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

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• Sep 19, 2014

• #73

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

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• Sep 29, 2014

• #74

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

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• Sep 29, 2014

• #75

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

 

merlin2049er

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• Sep 29, 2014

• #76

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

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• Sep 29, 2014

• #77

What is the question?

 

merlin2049er

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• Sep 29, 2014

• #78

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

 

Erel

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• Sep 29, 2014

• #79

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

 

merlin2049er

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• Sep 29, 2014

• #80

B4X:

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).

 

Last edited: Sep 29, 2014