When you say you are not able to sniff through the device using CySmart, does it mean that you are not able to discover its attributes?
yep that's what I meant. With the CySmart app I can not discover the attributes. I don't know why I can't do this. So a collaegue came up with the idea to use the nRf Master Control Panel app for android. With this app I was able to discover the attributes but not the handles (see the pictures). But I saw that if I want to get the values needed (blood pressure etc), I would need to enable indications. The UUID of the descriptor as you can see in the picture is the 2902. I couldn't found a function to write the descriptor only having the uuid. So I intended to get this via the firmware. Which I think is working now. I get the uuid 2902 and the handle 0f. Next I enabled indications, at least I thought so. But on the CYBLE_EVT_GATTC_HANDLE_IND nothing happens.
I attached my current project. Revised some points and the overall structure.
I really appreciate your help!!!
can no one of you help me? If you need any further information to help me just say and I will provide it.
I would suggest to create a technical case on www.cypress.com -> "Design Support" -> under Support, select "Create a Support case". You need to be registered to create a case.