ESP32 BLE Andriot Aplication Example

Q&A Forum › ESP32 BLE Andriot Aplication Example

derick asked 5 years ago

Hello.

The sample you have in the course ESP32 BLE android application is giving me a problem. I copied it as is and using it successfully the first time i Connect to the ESP32. I can switch on the LED so i know all is well. When I disconnect the BLE service and try to reconnect, it doesn’t connect. I have close the App, turn of Bluetooth on the phone, Switch on Bluetooth. Start the App again and then it will connect again.

Any advice please

3 Answers

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derick answered 5 years ago

It is somewhere in the ESP32 Code. When I use a BLE Scanner App it connects the first time and I can see all the Services and UUID. And serial monitor show temperature value. second time around the BLE scanner can’t connect.
Please help

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Sara Santos Staff answered 5 years ago

Hi Derick.
When you try to reconnect, do you get something on the serial monitor about the bluetooth connection?

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derick answered 5 years ago

Hello Sara. I managed to figure out what the problem is. The phone scans for Bluetooth classic devices after BLE is disconnected. Once that is complete can a new BLE connection be made again