Unable to Connect to the Cloud

SteveD0 · 2020-11-03T18:47:55+00:00

I can use the LTE Link Monitor to select my device and run the AT commands. I have a signal strength now of 4 bars. I’ve been typing in AT+CGSN to get the I...

SteveD0

I ran the suggested AT commands on each device.

********TEST 1************
TEST 1 - FAILED on DEVICE w/ SerNr ending in 504:

Here is what I got:
AT+CFUN=4 AT%XSYSTEMMODE=1,0,1,0 AT+CFUN=0
%XSIM: 0
OK

And did nothing when I pressed RESET - if I had waited long enough it would have timed out

*** Booting Zephyr OS build v2.3.0-rc1-ncs1-2410-g7d20f2ebf259  ***
D: COEX0 set: AT%XCOEX0=1,1,1565,1586
I: A-GPS sample has started
I: Connecting to LTE network. This may take minutes.
I: PSM mode requested
+CEREG: 0,"FFFE","FFFFFFFF",7,0,0,"11100000","11100000"

From my several earlier attempts it times out from here.

********TEST 2************
TEST 2: WORKED on DEVICE w/ SerNr ending in 152:
I put the SIM card in this device as it never worked on the first device.
This is the device that connected yesterday and showed the IMEI associated to the the SIM card in the nRF Cloud.

Running your request:

AT+CFUN=4  AT%XSYSTEMMODE=1,0,1,0  AT+CFUN=0
%CESQ: 255,0,255,0
+CEREG: 0,"FFFE","FFFFFFFF",7
%XSIM: 0
OK

*** Booting Zephyr OS build v2.3.0-rc1-ncs1-2410-g7d20f2ebf259  ***
D: COEX0 set: AT%XCOEX0=1,1,1565,1586
I: A-GPS sample has started
I: Connecting to LTE network. This may take minutes.
I: PSM mode requested
+CEREG: 2,"0415","00F83910",7,0,0,"11100000","11100000"
+CSCON: 1
+CEREG: 5,"0415","00F83910",7,,,"00001000","00011111"
AT+COPS=3,2
I: Connected to LTE network
D: GPS socket created, fd: 1232491587
I: CLOUD_EVT_CONNECTING
OK
AT+COPS?
+COPS: 0,2,"310410",7
OK
AT%XCBAND
%XCBAND: 17
OK
AT+CGDCONT?
+CGDCONT: 0,"IP","hologram","10.69.66.39",0,0
OK
T+CGACT?
+CGACT: 0,1
OK
I: CLOUD_EVT_CONNECTED
I: CLOUD_EVT_PAIR_DONE
E: Failed to save session state: -2
I: CLOUD_EVT_READY
I: Service info sent to cloud
D: GPS mode is enabled
D: GPS operational
I: Periodic GPS search started with interval 240 s, timeout 120 s
I: GPS_EVT_SEARCH_STARTED
D: Waiting for time window to operate
I: GPS_EVT_OPERATION_BLOCKED
+CSCON: 0
D: GPS has time window to operate
I: GPS_EVT_OPERATION_UNBLOCKED

……..

LOOKS LIKE THIS IS WORKING…

QUESTION??
Should I activate my second SIM card and use it in the device w/ SerNr ending in 504 and retry this whole process?

ALSO, ANSWERS TO OTHER QUESTIONS
1) Yes I connected the LTE antenna correctly
2) The device (152) is working correctly on network AT&T Mobility

jaredwolff

SteveD0 Should I activate my second SIM card and use it in the device w/ SerNr ending in 504 and retry this whole process?

It’s likely a settings issue on the first device. Bear in mind that the commands need to be on separate lines

AT+CFUN=4
AT%XSYSTEMMODE=1,0,1,0
AT+CFUN=0

Then reset. Then make sure the settings have taken with

AT%XSYSTEMMODE?

The reply should be

%XSYSTEMMODE: 1,0,1,0

You only have to do this once.

I recommend you load the at_client sample on the one that is not working and re-attempt connecting with that firmware. This helps rule out weird configuration issues.

Also, are you using a firmware you built or the one that I pre-built?

SteveD0

If you mean by firmware executing the newtmgr image upload when the device was in DFU mode I loaded the firmware I built as I followed the steps from the nRF Cloud AGPS Sample. I’m not actually sure how to load your pre-build firmware nor where to find it?

jaredwolff

@SteveD0
The at_client example is here: https://docs.jaredwolff.com/nrf9160-at-client-sample.html
The nrf_cloud_agps page is here https://docs.jaredwolff.com/nrf9160-agps-sample.html

Both have respective links to their downloads. They can also be found on the downloads page

The download links were not obvious before. They’re now very obvious.

SteveD0

I’m trying to use the Desktop Programmer to update the modem firmware. I can select the device okay, however, the picture doesn’t look like the instructions. There is no hex file in the memory of the device.
I also can browse and get the merged.hex file and place it into the file memory layout but the menu items to erase and/or write are all grayed out.
The log shows this:
15:26:09.011 Application data folder: C:\Users\Steve\AppData\Roaming\nrfconnect\pc-nrfconnect-programmer
15:26:09.122 Using nrfjprog library 10.9.0, pc-nrfjprog-js 1.7.3
15:26:10.011 Error while probing devices: Error occured when get serial numbers. Errorcode: CouldNotCallFunction (0×9) Lowlevel error: INVALID_OPERATION (fffffffe)
15:26:12.288 Unsupported device. The detected device could not be recognized as neither JLink device nor Nordic USB device.
15:26:28.141 Parsing HEX file: C:\ncs\nrf\samples\nrf9160\at_client\build\zephyr\merged.hex
15:26:28.152 File was last modified at 11/4/2020, 3:06:14 PM

I then went back and loaded blinky. Upon returning to the programmer same thing there was no visible files in the memory.

SteveD0

After I didn’t see the blinky in memory on that device, I went to my other device and tried to look into the memory and didn’t see anything there.

I don’t have the programmer board yet if that is what is needed. It should arrive soon.

jaredwolff

SteveD0 I don’t have the programmer board yet if that is what is needed. It should arrive soon.

You need the programmer and cable for the programmer app to work. I recommend you don’t update your modem firmware until you can get your setup working first.

SteveD0

okay.

SteveD0

So most definitely the firmware needs to be updated. After activating a new SIM card for this device and getting it set up on nRF Connect for Cloud the message is, “Upgrade your firmware to view Network, Sim, Device, and Service Information”

jaredwolff

SteveD0 this is referring to the Asset Tracker application firmware. You can ignore that message. The nRF9160 Feather currently does not support the Asset Tracker application.

« Previous Page