If you download nRF Connect Desktop on your computer, you can add characterstics to your device through a serial interface. See this link for more information.
However, I would recommend you to implement it yourself, here and here are some nice tutorial that demonstrates how to create custom characteristics.
If you download nRF Connect Desktop on your computer, you can add characterstics to your device through a serial interface. See this link for more information.
However, I would recommend you to implement it yourself, here and here are some nice tutorial that demonstrates how to create custom characteristics.
