provision method
Implementation
Future<void> provision(String ssid, String passphrase) async {
if (_session == null || !_session!.isSessionEstablished) {
try {
await _initSession();
} catch (e) {
//print(e);
rethrow;
}
await _sendWiFiConfig(ssid, passphrase);
} else {
await _sendWiFiConfig(ssid, passphrase);
}
}