Hi,
I am new to Nordic cellular modems, but plenty experienced with other modems. I would like to evaluate the nRF9160 as a potential candidate for future use in our products. It would be used entirely as an AT command driven modem slave to our main CPU.
I want to evaluate its performance on our local network with a few SIM cards. I don't know what "Asset tracker" is and I don't think I want it! I have a nRF9160DK and when powered up with a Twilio SIM, I get the following messages. You will see I have sent a few AT commands and that it has registered on the network but eventually claps out due to asset tracker not being able to connect to the cloud. After that AT commands return ERROR.
I don't have a lot of time available to evaluate this part so am asking here what is the quickest path to operate this modem as a simple AT command driven modem for evaluation?
Thanks in advance...
AT
OK
AT+CGDCONT?
+CGDCONT: 0,"IP","super","100.65.83.171",0,0
OK
AT+CEREG?
+CEREG: 5,5,"B070","0005B703",7,,,"11100000","11100000"
OK
+CEREG: 2,"B070","0005B703",7,0,0,"11100000","11100000"
[00:00:37.757,415] <dbg> lte_lc.at_handler: +CEREG notification: +CEREG: 2,"B070 ","0005B703",7,0,0,"11100000","11100000"
[00:00:37.769,409] <dbg> lte_lc.parse_psm_cfg: TAU: -1 sec, active time: -1 sec
+CSCON: 0
[00:00:37.778,594] <dbg> lte_lc.at_handler: +CSCON notification
+CSCON: 1
[00:00:37.990,570] <dbg> lte_lc.at_handler: +CSCON notification
[00:00:38.388,854] <dbg> nrf_cloud_transport.nct_connect: getaddrinfo failed -11
[00:00:38.396,881] <inf> asset_tracker: CLOUD_EVT_CONNECTING
[00:00:38.403,106] <err> asset_tracker: Failed to connect to cloud, error -3
[00:00:38.411,041] <err> asset_tracker: Network error, check cloud configuration
[00:00:38.419,311] <err> asset_tracker: Device will reboot in 300 seconds
[00:00:38.426,971] <err> asset_tracker: LTE link disconnect
+CEREG: 0,"B070","0005B703",7,0,0,"11100000","11100000"
[00:00:38.566,192] <dbg> lte_lc.at_handler: +CEREG notification: +CEREG: 0,"B070 ","0005B703",7,0,0,"11100000","11100000"
[00:00:38.578,186] <dbg> lte_lc.parse_psm_cfg: TAU: -1 sec, active time: -1 sec
+CSCON: 0
[00:00:40.192,504] <dbg> lte_lc.at_handler: +CSCON notification
[00:00:41.707,305] <err> asset_tracker: Shutdown modem
[00:00:41.719,573] <err> at_cmd: AT socket recv failed with err -1
[00:00:41.726,623] <err> at_cmd: Unrecoverable reception error (err: 12), thread killed
AT
[00:01:07.916,320] <err> at_cmd: Failed to send AT command (err:9)
[00:01:07.923,370] <err> at_host: Error while processing AT command: -9
ERROR
