Unable to send message.

[m-slavov]

I am trying to send a message over BLE, the devices are connected to each other but the message is not sent. I think the issue is this: E/BluetoothLeService: Could not find uuidService:e7810a71-73ae-499d-8c15-faa9aef0c3f2 and uuidCharacteristic:bef8d6c9-9c21-4c9e-b632-bd58c1009f9f but I don't understand what to do with it.

P.S I am just getting a list of devices and then I user the normal connection method(service.connect()) to connect with one of them.

[douglasjunior]

First you need to make sure that you have selected the correct UUID for the service and for the characteristic. Then, you can write after the connection has been established successfully.

You can use this apps to help to find the UUIDs:

• https://play.google.com/store/apps/details?id=uk.co.alt236.btlescan
• https://play.google.com/store/apps/details?id=com.edodm85.bluetoothbleterminal.free

[m-slavov]

Thank you for the answer, It helped me solve the issue. I have one other small question. Is is possible to read(message) from a peripheral, for example when I click a button or do I need to wait for the peripheral to send the data(message)?