What are the API's can be used to send and receive packets on NIDD in NRF9160

RE: What are the API's can be used to send and receive packets on NIDD in NRF9160

Manu_Devappa — Fri, 18 Mar 2022 13:03:51 GMT

I followed Modem Shell example and this is my log,

17:47:20.519 -> Functional mode set successfully: power off
17:47:20.519 -> [1;32mmosh:~$ [mlink defcont -e -a "SimAPI" -f "non-ip"
17:47:57.960 -> link defcont enabled
17:47:57.960 -> link_sett_save_defcont_apn: key mosh_link_settings/defcont_apn with value SimAPI saved
17:47:57.960 -> Key "mosh_link_settings/defcont_ip_family" with value "3" / "non-ip" saved
17:47:57.960 -> [1;32mmosh:~$ [mlink funmode --normal
17:48:20.462 -> Functional mode set successfully: normal
17:48:20.462 -> [1;32mmosh:~$ [m[8D[JNetwork registration status: searching
17:48:23.256 -> [1;32mmosh:~$ [m[8D[JLTE cell changed: Cell ID: 4158866, Tracking area: 49284
17:48:23.256 -> [1;32mmosh:~$ [m[8D[JCurrently active system mode: NB-IoT
17:48:23.256 -> [1;32mmosh:~$ [m[8D[JRRC mode: Connected
17:48:23.489 -> [1;32mmosh:~$ [m[8D[JRRC mode: Idle
17:48:24.785 -> [1;32mmosh:~$ [msock connect -f packet -t raw
17:49:07.080 -> Socket open and connect family=3, type=3, port=0, bind_port=0, pdn_cid=0, address=
17:49:07.080 -> Socket created socket_id=0, fd=4
17:49:07.080 -> [1;32mmosh:~$ [msock send -d foodata2 -i 0
17:49:17.914 -> Socket data send:
17:49:17.914 -> 	foodata2
17:49:17.914 -> Error from socket id=0 (fd=4), closing

RE: What are the API's can be used to send and receive packets on NIDD in NRF9160

Håkon Alseth — Fri, 18 Mar 2022 12:54:20 GMT

Hi,

pdn_activate() returns -8 (ENOEXEC), which seems to indicate that enabling the specific APN is not successful:

https://github.com/nrfconnect/sdk-nrf/blob/v1.9.1/lib/pdn/pdn.c#L345-L348

[quote user="Manu_Devappa"]When I configure the PDN example to Non-IP it shows "PDN type IPv6 only allowed". Is it mean that my SIM does not support NIDD? [/quote]

The ESM cause code indicates that your APN only support ipv6.

The activation of the other APN fails, indicating that you are having issues enabling the APN/PDN for NIDD. This could be due to wrong settings, or incorrect authentication (for instance SIM issues).

Kind regards,

Håkon

RE: What are the API's can be used to send and receive packets on NIDD in NRF9160

Manu_Devappa — Fri, 18 Mar 2022 11:42:24 GMT

I have one doubt.
When I configure the PDN example to Non-IP it shows "PDN type IPv6 only allowed". Is it mean that my SIM does not support NIDD?

17:07:32.696 -> Created new PDP context 1
17:07:32.729 -> PDP context 1 configured: APN ****, Family Non-IP
17:07:32.729 -> Event: PDP context 1, PDN type IPv6 only allowed
17:07:32.729 -> notify +CGEV: RESTR 3,1
17:07:32.729 -> pdn_activate() failed, err -8 esm 51 PDN type IPv6 only allowed
17:07:32.862 -> notify +CGEV: IPV6 0
17:07:32.862 -> Event: PDP context 0 IPv6 up

RE: What are the API's can be used to send and receive packets on NIDD in NRF9160

Håkon Alseth — Mon, 14 Mar 2022 13:00:50 GMT

Hi,

The PDN example, which it looks like you're running, will showcase how to setup a specific PDN. This seems to be successful at your end, which is a good starting point. However, it does not do anything wrt. NIDD.

the modem_shell can do NIDD. Please see this thread on how to use NIDD with the modem shell:

https://devzone.nordicsemi.com/f/nordic-q-a/76364/nidd-testing-with-modem-shell---nrf9160-nb-iot

The above thread refers to the raw socket, as also listed with examples in the modem shell documentation:

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/samples/nrf9160/modem_shell/README.html#id5

Could you try this and see if that works at your end?

Kind regards,

Håkon