This quick start guide will navigate you through the process of starting up your new nRF9151 Connect Kit. The board comes pre-programmed with the Modem Shell application, enabling you to explore its various features right out of the box.
Press the DFU/RST button to reset the nRF9151 SiP. Observe the output of the terminal. You should see the output, similar to what is shown in the following:
mosh:~$
at clear cloud_rest curl date device dl fota gnss
gpio_count heap help history iperf3 kernel link location ping
print rem resize rest retval shell sleep sms sock
startup_cmd th uart version
mosh:~$ ping --help
Usage: ping [options] -d destination
-d, --destination, [str] Name or IP address
Options:
-t, --timeout, [int] Ping timeout in milliseconds
-c, --count, [int] The number of times to send the ping request
-i, --interval, [int] Interval between successive packet transmissions
in milliseconds
-l, --length, [int] Payload length to be sent
-I, --cid, [int] Use this option to bind pinging to specific CID.
See link cmd for interfaces
-6, --ipv6, Force IPv6 usage with the dual stack interfaces
-r, --rai Set RAI options for ping socket. In order to use RAI,
it must be enabled with 'link rai' command.
-h, --help, Shows this help information
The Modem Shell application will automatically connect to the LTE network. Wait for the LTE link to be established. You can also type link status to show status of the current connection:
mosh:~$ link status
Modem functional mode: normal
Network registration status: Connected - home network
Modem config for system mode: LTE-M - NB-IoT - GNSS
Modem config for LTE preference: LTE-M is preferred, but PLMN selection is more important
Currently active system mode: NB-IoT
Battery voltage: 4516 mV
Modem temperature: 25 C
Device ID: nrf-359404230074347
Operator full name: ""
Operator short name: ""
Operator PLMN: "46000"
Current cell id: 213818780 (0x0CBE9D9C)
Current phy cell id: 352
Current band: 8
Current TAC: 7464 (0x1D28)
Current rsrp: 55: -86dBm
Current snr: 26: 2dB
Mobile network time and date: 25/02/16,05:25:35+32
PDP context info 1:
CID: 0
PDN ID: 0
PDP context active: yes
PDP type: IP
APN: cmnbiot
IPv4 MTU: 1280
IPv4 address: 100.25.164.39
IPv6 address: ::
IPv4 DNS address: 120.196.165.7, 221.179.38.7
IPv6 DNS address: ::, ::
Use ping command to test the reachability of a host on an IP network. For example:
The Modem Shell application provides commands to explore the GNSS functionality.
Use gnss command to start the GNSS:
gnssstart
For best results retrieving GNSS data, place the board outside with a clear view of the sky. Observe that the following information is displayed upon acquiring a fix:
Fix valid: true
Leap second valid: false
Sleep between PVT: false
Deadline missed: false
Insuf. time window: false
Velocity valid: true
Scheduled download: false
Execution time: 52587 ms
Time: 22.02.2025 07:29:24.141
Latitude: 22.694009
Longitude: 113.941902
Accuracy: 3.5 m
Altitude: 103.4 m
Altitude accuracy: 5.5 m
Speed: 0.1 m/s
Speed accuracy: 0.6 m/s
V. speed: 0.2 m/s
V. speed accuracy: 0.6 m/s
Heading: 0.0 deg
Heading accuracy: 180.0 deg
PDOP: 4.6
HDOP: 2.6
VDOP: 3.7
TDOP: 3.4
Google maps URL: https://maps.google.com/?q=22.694009,113.941902
SV: 22 C/N0: 38.7 el: 42 az: 331 signal: 1 in fix: 1 unhealthy: 0
SV: 17 C/N0: 37.7 el: 43 az: 325 signal: 1 in fix: 1 unhealthy: 0
SV: 14 C/N0: 39.7 el: 63 az: 342 signal: 1 in fix: 1 unhealthy: 0
SV: 195 C/N0: 40.2 el: 63 az: 55 signal: 3 in fix: 1 unhealthy: 0
SV: 194 C/N0: 38.9 el: 61 az: 92 signal: 3 in fix: 1 unhealthy: 0
SV: 1 C/N0: 40.1 el: 37 az: 35 signal: 1 in fix: 1 unhealthy: 0
SV: 3 C/N0: 32.6 el: 40 az: 97 signal: 1 in fix: 1 unhealthy: 0
SV: 199 C/N0: 31.3 el: 0 az: 0 signal: 3 in fix: 0 unhealthy: 0
SV: 19 C/N0: 24.5 el: 0 az: 0 signal: 1 in fix: 0 unhealthy: 0
...
To turn off the GNSS, run the following command:
gnssstop
Optimize GNSS reception
GNSS signals do not usually penetrate ceilings or other structures that well. For best GNSS performance, the antenna should be placed outside on a flat surface in an open space far from sources of interference and other structures that can block the satellite signals.
The GNSS patch antenna achieves the highest gain when placed horizontally on a surface (x-y) facing the z-axis since it can receive all propagated GNSS signals. A lower gain is experienced if the patch antenna is mounted at an angle.
Congratulations! You've completed the quick start guide and explored some features of the Out-of-Box application. There is much more to explore. Check out our developer guides:
