>14 characteristics in BLE - connection issues

[nordicdev]

Hi,

I have around 15 characteristics(my code is similar to ble_uart) - 14 of them with read and notify properties and one with notify, read and write properties.

With this setup, when I try to connect to the nRF connect app, it takes around 4-5 seconds for a successful connection to establish(if it connects in the first attempt). Sometimes, connection does not happen in the first go.

Eventually it connects, but it takes 2-4 retries when there is a connection failure.

Connection failure happens roughly twice every 3-4 connection attempts.

Is this behaviour expected? Or, have I done something wrong in setting up the characteristics?

Thanks.

[Petter Myhre]

I'm not sure why this is happening. Maybe you can do a sniffer trace? You can use the nRF Sniffer.