NRF 51822 Characteristic issue.

[Sergey]

Hi everyone!

During the development of our device, we faced with some problems: So now we need to read the data array in a clear sequence from characteristics. The data loads to characteristics like element by element form data array.

How can I exactly track that device reads from exact characteristic? Code attached.

sendIFRead.c

[MartinBL]

Hi. It is a little unclear to me what you mean by "read the data array in a clear sequence from characteristics". In the code you provide it looks like you are trying to send a notification. I.e. transfer data from server to client. Now you want to send multiple notifications and keep track of how much data has been transmitted? Or do you want to read data sent from the client side?

[Sergey]

Hi,

Thank you for promt reply.

We have massive of structure data, for example 10 elements. Each element is 32byte, totaly we have 10x32=320byte in total. So i send 32 byte per time,

and so till i send all the data from our massive.

But when i try to read with characteristic i can obtain 1,2,5,8,10 elemets. So how can i understand what data was sought from nrf51822?

Hope it's clearer now, because i'm writing from the words of our developer.

[MartinBL]

If you are trying to send one big structure of data then maybe this is a good explanation on how to do it?

This and this are also two relevant discussions.