I use cordova-plugin-ble-central plugin for my Cordova application. It connects to an ESP32 board using BT. In case I use sequence:

1) ble.scan
2) ble.connect

It works fine. When I store device ID found during scan operation and used for connect function and I use it without prior scan, the connect function fails with error:

Could not find peripheral

In case I perform ble.scan and I connect using the stored ID from previous session, the connection is successful. Is there a way, how to connect without scanning the devices?

CodePudding user response：

No this can generally not be done reliably, at least not on Android. See the full explanation in my answer here https://stackoverflow.com/a/43482099.