Android Question Bluetooth Sampling

[Lee Ingram]

1. I am a newbie to this Great B4A. I am having a lot of fun. I have been playing with Bluetooth and AsyncStreamsText. I have 4 sensors that I am trying to read. I have been successful in communicating with and getting the text data I need from one sensor. Now I am ready to repeat this same type of communication with three other Bluetooth sensors. I need to monitor the data from all 4 Bluetooth sensors. I need to get at least 10 samples per second from each sensor. I don't how to proceed.

Thanks, Lee

 

[Erel]

Create a class with AsyncStreams (or AsyncStreamsText) and Serial objects as members and handle the connection in this class.

This will allow you to create multiple instances of this class and connect to different serial devices.

 

[Lee Ingram]

Can you show me any kind of example.
Sorry, I feel so lame.

 

[Cableguy]

This is interesting... But isn't Bluetooth a one to one type of connection?
I don't see how it is possible to connect 4 devices at the same time to the device, even if toggling from on connection to the other... 10 samples per second per device?
There are not many devices that allow for multiple (2 as a possible max) connections...

Can you elaborate on the hardware specs of your project?

 

[Lee Ingram]

This is interesting... But isn't Bluetooth a one to one type of connection?
I don't see how it is possible to connect 4 devices at the same time to the device, even if toggling from on connection to the other... 10 samples per second per device?
There are not many devices that allow for multiple (2 as a possible max) connections...

Can you elaborate on the hardware specs of your project?

I have four BT measuring sensors that output a string of characters: "+- 1.234 mm A0>".
I need to be able to make adjustment based on the readings displayed.

 

[stari]

This is interesting... But isn't Bluetooth a one to one type of connection?
I don't see how it is possible to connect 4 devices at the same time to the device, even if toggling from on connection to the other... 10 samples per second per device?
There are not many devices that allow for multiple (2 as a possible max) connections...

Can you elaborate on the hardware specs of your project?

I have 2 BLE devices ( HM-10) connected at the same time (BLeExtExt) and is working OK.

 

[Cableguy]

I have 2 BLE devices ( HM-10) connected at the same time (BLeExtExt) and is working OK.

As I had said, I know 1 master to 2 slaves connection are possible but that not all devices support them, but 1 master connecting 4 slaves at the same time?

 

[stari]

As I had said, I know 1 master to 2 slaves connection are possible but that not all devices support them, but 1 master connecting 4 slaves at the same time?

I will try. In 2 weeks i receive 10 pcs of HM-10.

 

[Lee Ingram]

As I had said, I know 1 master to 2 slaves connection are possible but that not all devices support them, but 1 master connecting 4 slaves at the same time?

Can you share any kind of a code sample? I have been all over this trying to glean some way of doing a master/slave, and trying to understand Classes.
My head hurts!

 

[Lee Ingram]

I have had quite a struggle trying listen to two BT sensors. I was finally successful in connecting to two different devices. But, I can only read the data from one device at a time. I now understand that the

StartActivity(ChatActivity) will cause a Activity_Pause (UserClosed AsBoolean) when I try to get data from the newly connected device.


I really need the data from both devices for the whole time they are connected.

I am using the Serial example with a modify ChatActivity to read a text data stream.

The reading of data work perfectly. I need to read both devices continuously.

Can anyone Help Please.

 

[Erel]

You should move all the communication related code to a service.

 

[Lee Ingram]

You should move all the communication related code to a service.

Thank you, I will work on learning about a Service.