Android Question ble example

[emanuele77]

Hi,
i need a library for read and write a characteristic of a ble service with b4a.
I have download your BLE2 and BLEexample and work but is old and can only read and not write.
There is an example for read and write a characteristic?
I need to connect chip esp32 with ble with an android device.

 

[emanuele77]

I have find now this https://www.b4x.com/android/forum/threads/connecting-to-arduino-with-ble-bluetooth-low-energy.65824/
I will try...

 

[Erel]

I have download your BLE2 and BLEexample and work but is old and can only read and not write.

The example is not old. It doesn't demonstrate writing as the writing implementation depends on the specific BLE peripheral.

There are many discussions about writing: https://www.b4x.com/android/forum/pages/results/?query=ble+writedata&product=b4a
If you have any specific question then please post it.

 

[emanuele77]

Thx Erel
I thank you for your contribution to this forum and to me
I have try this example program https://www.b4x.com/android/forum/threads/connecting-to-arduino-with-ble-bluetooth-low-energy.65824/
i can see scanning in log but i dont see my ble peripherals....

Instead if i try BLEexample i can scan all ble device, i can connect to my ble device and i can see all characteristics.....now i want simple write a characteristic but there isnt a function for write....
Can i write a characteristic with BLE2 BLEexample?

 

[Erel]

Yes, with Manager.WriteData.

 

[emexes]

Use app nRF Connect to explore the BLE device, find out which characteristics are readable and/or writable, can even do test read/writes, make sure that the device documentation matches reality.

Lol. Much device BLE documentation is a bit on the concise side (to phrase it diplomatically ;-)