RE: multi-link central connection with thingy having issue.

nikunj8086 — Wed, 07 Feb 2018 11:54:16 GMT

found solution.

so basically service discovery was happening 7 time for first node and for rest of the node it will be only once.

so i created a static variable in service discovery function and incremented it at the end of function.

and after that i put a if condition as count variable is 1 then enable notification.

this way all of my thingy were able to connect all at once because of discovery time is reduced for first node.

RE: multi-link central connection with thingy having issue.

Bjørn Kvaale — Fri, 26 Jan 2018 13:15:57 GMT

The LED button service for the first connected peripheral is for some reason discovered 7 times, whereas the second LED button service is discovered one time.

RE: multi-link central connection with thingy having issue.

Bjørn Kvaale — Fri, 26 Jan 2018 13:13:04 GMT

Hi nikunj8086, do you have any log file available? So basically, if you turn off your central device & turn off all your Thingy:52s & then turn the central device back on & then turn on the Thingy devices one by one, the central device is able to discover all of the Thingy services of each Thingy, right? But if you turn off the central device & keep the Thingys on & turn the central device back on, the central is not able to discover all of the services & enable notifications. Is that correct?

Have you tested this example with less peripheral Thingy devices? Does the same thing happen if you have one central pca10040 dk & two Thingy devices as peripherals?

I have tested the multilink central example with an nrf52840pdk as the central & two nrf52832dks as peripherals & got this weird behaviour here:

<info> app: Starting initilization of multilink example.
<info> app: Multilink example started.
<info> app: Start scanning for device name Blinky_DC10.
<info> app: Connection 0x0 established, starting DB discovery.
<info> app: Start scanning for device name Blinky_DC10.
<info> app: Connection 0x1 established, starting DB discovery.
<info> app: Start scanning for device name Blinky_DC10.
<info> app: LED Button service discovered on conn_handle 0x0
<info> app: LED Button service discovered on conn_handle 0x0
<info> app: LED Button service discovered on conn_handle 0x0
<info> app: LED Button service discovered on conn_handle 0x0
<info> app: LED Button service discovered on conn_handle 0x0
<info> app: LED Button service discovered on conn_handle 0x0
<info> app: LED Button service discovered on conn_handle 0x0
<info> app: LED Button service discovered on conn_handle 0x1