Porting code from SDK v15.0 to 17 - problem with ble_nus_data_send

[Avi]

I have a working code which implements a UART peripheral written originally with SDK15.0

I would like to port it to the latest SDK 17.02 

I can get advertisement and I can connect with a smartphone. 

I can write data from the smartphone to the UART, but the opposite direction doesn't work

I get error and reset

I found that the problem is in ble_nus_data_send

What could be the reason (difference between SDK15 to SDK17)?

[awneil]

Avi said:

I get error

So what error, exactly, do you get?

Avi said:

I found that the problem is in ble_nus_data_send

So what debugging / investigation have you done to find the source of the error ?

[Avi]

I got error from this:

if (conn_id >= p_link_ctx_storage->max_links_cnt)
{
return NRF_ERROR_NO_MEM;
}