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SK-TDA4VM: Unable to check Wi-Fi connectivity status using the "iw wlp1s0 link" command

Part Number: SK-TDA4VM

Hi 

I am simply just trying to check if the board has a Wi-Fi connection established to my network. I have been successful in the past trying to do so by using the "iw wlp1s0 link" command, however when I run the command now I get this output: 

root@tda4vm-sk:/opt/edge_ai_apps# iw wlp1s0 link
Usage:  iw [options] command
Options:
        --debug         enable netlink debugging
        --version       show version (5.4)
Commands:
        dev <devname> ap stop
                Stop AP functionality


        dev <devname> ap start
                <SSID> <control freq> [5|10|20|40|80|80+80|160] [<center1_freq> [<center2_freq>]] <beacon interval in TU> <DTIM period> [hidden-ssid|zeroed-ssid] head <beacon head in hexadecimal> [tail <beacon tail in hexadecimal>] [inactivity-time <inactivity time in seconds>] [key0:abcde d:1:6162636465]


        phy <phyname> coalesce show
                Show coalesce status.

        phy <phyname> coalesce disable
                Disable coalesce.

        phy <phyname> coalesce enable <config-file>
                Enable coalesce with given configuration.
                The configuration file contains coalesce rules:
                  delay=<delay>
                  condition=<condition>
                  patterns=<[offset1+]<pattern1>,<[offset2+]<pattern2>,...>
                  delay=<delay>
                  condition=<condition>
                  patterns=<[offset1+]<pattern1>,<[offset2+]<pattern2>,...>
                  ...
                delay: maximum coalescing delay in msec.
                condition: 1/0 i.e. 'not match'/'match' the patterns
                patterns: each pattern is given as a bytestring with '-' in
                places where any byte may be present, e.g. 00:11:22:-:44 will
                match 00:11:22:33:44 and 00:11:22:33:ff:44 etc. Offset and
                pattern should be separated by '+', e.g. 18+43:34:00:12 will
                match '43:34:00:12' after 18 bytes of offset in Rx packet.


        dev <devname> auth <SSID> <bssid> <type:open|shared> <freq in MHz> [key 0:abcde d:1:6162636465]
                Authenticate with the given network.


        dev <devname> connect [-w] <SSID> [<freq in MHz>] [<bssid>] [key 0:abcde d:1:6162636465] [mfp:req/opt/no]
                Join the network with the given SSID (and frequency, BSSID).
                With -w, wait for the connect to finish or fail.

        dev <devname> disconnect
                Disconnect from the current network.

        dev <devname> cqm rssi <threshold|off> [<hysteresis>]
                Set connection quality monitor RSSI threshold.


        event [-t|-r] [-f]
                Monitor events from the kernel.
                -t - print timestamp
                -r - print relative timestamp
                -f - print full frame for auth/assoc etc.

        dev <devname> ftm start_responder [lci=<lci buffer in hex>] [civic=<civic buffer in hex>]
                Start an FTM responder. Needs a running ap interface


        dev <devname> ftm get_stats
                Get FTM responder statistics.


        phy <phyname> hwsim wakequeues


        phy <phyname> hwsim stopqueues


        phy <phyname> hwsim setps <value>


        phy <phyname> hwsim getps


        dev <devname> ibss join <SSID> <freq in MHz> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz] [fixed-freq] [<fixed bssid>] [beacon-interval <TU>] [basic-rates <rate in Mbps,rate2,...>] [mcast-rate <rate in Mbps>] [key d:0:abcde]
                Join the IBSS cell with the given SSID, if it doesn't exist create
                it on the given frequency. When fixed frequency is requested, don't
                join/create a cell on a different frequency. When a fixed BSSID is
                requested use that BSSID and do not adopt another cell's BSSID even
                if it has higher TSF and the same SSID. If an IBSS is created, create
                it with the specified basic-rates, multicast-rate and beacon-interval.

        dev <devname> ibss leave
                Leave the current IBSS cell.

        features


        commands
                list all known commands and their decimal & hex value

        phy
        list
                List all wireless devices and their capabilities.

        phy <phyname> info
                Show capabilities for the specified wireless device.

        dev <devname> switch channel <channel> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz] [beacons <count>] [block-tx]
        dev <devname> switch freq <freq> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz] [beacons <count>] [block-tx]
        dev <devname> switch freq <control freq> [5|10|20|40|80|80+80|160] [<center1_freq> [<center2_freq>]] [beacons <count>] [block-tx]
                Switch the operating channel by sending a channel switch announcement (CSA).

        dev
                List all network interfaces for wireless hardware.

        dev <devname> info
                Show information for this interface.

        dev <devname> del
                Remove this virtual interface

        dev <devname> interface add <name> type <type> [mesh_id <meshid>] [4addr on|off] [flags <flag>*] [addr <mac-addr>]
        phy <phyname> interface add <name> type <type> [mesh_id <meshid>] [4addr on|off] [flags <flag>*] [addr <mac-addr>]
                Add a new virtual interface with the given configuration.
                Valid interface types are: managed, ibss, monitor, mesh, wds.

                The flags are only used for monitor interfaces, valid flags are:
                none:     no special flags
                fcsfail:  show frames with FCS errors
                control:  show control frames
                otherbss: show frames from other BSSes
                cook:     use cooked mode
                active:   use active mode (ACK incoming unicast packets)
                mumimo-groupid <GROUP_ID>: use MUMIMO according to a group id
                mumimo-follow-mac <MAC_ADDRESS>: use MUMIMO according to a MAC address

                The mesh_id is used only for mesh mode.

        help [command]
                Print usage for all or a specific command, e.g.
                "help wowlan" or "help wowlan enable".

        dev <devname> link
                Print information about the current link, if any.

        dev <devname> measurement ftm_request <config-file> [timeout=<seconds>] [randomise[=<addr>/<mask>]]
                Send an FTM request to the targets supplied in the config file.
                Each line in the file represents a target, with the following format:
                <addr> bw=<[20|40|80|80+80|160]> cf=<center_freq> [cf1=<center_freq1>] [cf2=<center_freq2>] [ftms_per_burst=<samples per burst>] [ap-tsf] [asap] [bursts_exp=<num of bursts exponent>] [burst_period=<burst period>] [retries=<num of retries>] [burst_duration=<burst duration>] [preamble=<legacy,ht,vht,dmg>] [lci] [civic]

        dev <devname> mesh leave
                Leave a mesh.

        dev <devname> mesh join <mesh ID> [[freq <freq in MHz> <NOHT|HT20|HT40+|HT40-|80MHz>] [basic-rates <rate in Mbps,rate2,...>]], [mcast-rate <rate in Mbps>] [beacon-interval <time in TUs>] [dtim-period <value>] [vendor_sync on|off] [<param>=<value>]*
                Join a mesh with the given mesh ID with frequency, basic-rates,
                mcast-rate and mesh parameters. Basic-rates are applied only if
                frequency is provided.

        dev <devname> mgmt dump frame <type as hex ab> <pattern as hex ab:cd:..> [frame <type> <pattern>]* [count <frames>]
                Register for receiving certain mgmt frames and print them.
                Frames are selected by their type and pattern containing
                the first several bytes of the frame that should match.

                Example: iw dev wlan0 mgmt dump frame 40 00 frame 40 01:02 count 10


        dev <devname> mpath dump
                List known mesh paths.

        dev <devname> mpath set <destination MAC address> next_hop <next hop MAC address>
                Set an existing mesh path's next hop.

        dev <devname> mpath new <destination MAC address> next_hop <next hop MAC address>
                Create a new mesh path (instead of relying on automatic discovery).

        dev <devname> mpath del <MAC address>
                Remove the mesh path to the given node.

        dev <devname> mpath get <MAC address>
                Get information on mesh path to the given node.

        dev <devname> mpath probe <destination MAC address> frame <frame>
                Inject ethernet frame to given peer overriding the next hop
                lookup from mpath table.
                .Example: iw dev wlan0 mpath probe xx:xx:xx:xx:xx:xx frame 01:xx:xx:00


        dev <devname> mpp dump
                List known mesh proxy paths.

        dev <devname> mpp get <MAC address>
                Get information on mesh proxy path to the given node.

        wdev <idx> nan add_func type <publish|subscribe|followup> [active] [solicited] [unsolicited] [bcast] [close_range] name <name> [info <info>] [flw_up_id <id> flw_up_req_id <id> flw_up_dest <mac>] [ttl <ttl>] [srf <include|exclude> <bf|list> [bf_idx] [bf_len] <mac1;mac2...>] [rx_filter <str1:str2...>] [tx_filter <str1:str2...>]


        wdev <idx> nan rm_func cookie <cookie>


        wdev <idx> nan config [pref <pref>] [bands [2GHz] [5GHz]]


        wdev <idx> nan stop


        wdev <idx> nan start pref <pref> [bands [2GHz] [5GHz]]


        dev <devname> ocb leave
                Leave the OCB mode network.

        dev <devname> ocb join <freq in MHz> <5MHz|10MHz>
                Join the OCB mode network.

        dev <devname> offchannel <freq> <duration>
                Leave operating channel and go to the given channel for a while.

        wdev <idx> p2p stop


        wdev <idx> p2p start


        dev <devname> cac channel <channel> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz]
        dev <devname> cac freq <freq> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz]
        dev <devname> cac freq <control freq> [5|10|20|40|80|80+80|160] [<center1_freq> [<center2_freq>]]
        dev <devname> cac trigger channel <channel> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz]
        dev <devname> cac trigger freq <frequency> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz]
        dev <devname> cac trigger freq <frequency> [5|10|20|40|80|80+80|160] [<center1_freq> [<center2_freq>]]
                Start or trigger a channel availability check (CAC) looking to look for
                radars on the given channel.

        phy <phyname> channels
                Show available channels.

        reg reload
                Reload the kernel's regulatory database.

        phy <phyname> reg get
                Print out the devices' current regulatory domain information.

        reg get
                Print out the kernel's current regulatory domain information.

        reg set <ISO/IEC 3166-1 alpha2>
                Notify the kernel about the current regulatory domain.

        dev <devname> roc start <freq> <time in ms>


        dev <devname> scan [-u] [freq <freq>*] [duration <dur>] [ies <hex as 00:11:..>] [meshid <meshid>] [lowpri,flush,ap-force,duration-mandatory] [randomise[=<addr>/<mask>]] [ssid <ssid>*|passive]
                Scan on the given frequencies and probe for the given SSIDs
                (or wildcard if not given) unless passive scanning is requested.
                If -u is specified print unknown data in the scan results.
                Specified (vendor) IEs must be well-formed.

        dev <devname> scan sched_stop
                Stop an ongoing scheduled scan.

        dev <devname> scan sched_start [interval <in_msecs> | scan_plans [<interval_secs:iterations>*] <interval_secs>] [delay <in_secs>] [freqs <freq>+] [matches [ssid <ssid>]+]] [active [ssid <ssid>]+|passive] [randomise[=<addr>/<mask>]]
                Start a scheduled scan at the specified interval on the given frequencies
                with probing for the given SSIDs (or wildcard if not given) unless passive
                scanning is requested.  If matches are specified, only matching results
                will be returned.

        dev <devname> scan abort
                Abort ongoing scan

        dev <devname> scan trigger [freq <freq>*] [duration <dur>] [ies <hex as 00:11:..>] [meshid <meshid>] [lowpri,flush,ap-force,duration-mandatory] [randomise[=<addr>/<mask>]] [ssid <ssid>*|passive]
                Trigger a scan on the given frequencies with probing for the given
                SSIDs (or wildcard if not given) unless passive scanning is requested.
                Duration(in TUs), if specified, will be used to set dwell times.


        dev <devname> scan dump [-u]
                Dump the current scan results. If -u is specified, print unknown
                data in scan results.

        dev <devname> set bitrates [legacy-<2.4|5> <legacy rate in Mbps>*] [ht-mcs-<2.4|5> <MCS index>*] [vht-mcs-<2.4|5> <NSS:MCSx,MCSy... | NSS:MCSx-MCSy>*] [sgi-2.4|lgi-2.4] [sgi-5|lgi-5]
                Sets up the specified rate masks.
                Not passing any arguments would clear the existing mask (if any).

        dev <devname> set mcast_rate <rate in Mbps>
                Set the multicast bitrate.

        dev <devname> set peer <MAC address>
                Set interface WDS peer.

        dev <devname> set noack_map <map>
                Set the NoAck map for the TIDs. (0x0009 = BE, 0x0006 = BK, 0x0030 = VI, 0x00C0 = VO)

        dev <devname> set 4addr <on|off>
                Set interface 4addr (WDS) mode.

        dev <devname> set type <type>
                Set interface type/mode.
                Valid interface types are: managed, ibss, monitor, mesh, wds.

        dev <devname> set meshid <meshid>
        dev <devname> set monitor <flag>*
                Set monitor flags. Valid flags are:
                none:     no special flags
                fcsfail:  show frames with FCS errors
                control:  show control frames
                otherbss: show frames from other BSSes
                cook:     use cooked mode
                active:   use active mode (ACK incoming unicast packets)
                mumimo-groupid <GROUP_ID>: use MUMIMO according to a group id
                mumimo-follow-mac <MAC_ADDRESS>: use MUMIMO according to a MAC address

        dev <devname> set mesh_param <param>=<value> [<param>=<value>]*
                Set mesh parameter (run command without any to see available ones).

        phy <phyname> set txq limit <packets> | memory_limit <bytes> | quantum <bytes>
                Set TXQ parameters. The limit and memory_limit are global queue limits
                for the whole phy. The quantum is the DRR scheduler quantum setting.
                Valid values: 1 - 2**32

        phy <phyname> set antenna <bitmap> | all | <tx bitmap> <rx bitmap>
                Set a bitmap of allowed antennas to use for TX and RX.
                The driver may reject antenna configurations it cannot support.

        dev <devname> set txpower <auto|fixed|limit> [<tx power in mBm>]
                Specify transmit power level and setting type.

        phy <phyname> set txpower <auto|fixed|limit> [<tx power in mBm>]
                Specify transmit power level and setting type.

        phy <phyname> set distance <auto|distance>
                Enable ACK timeout estimation algorithm (dynack) or set appropriate
                coverage class for given link distance in meters.
                To disable dynack set valid value for coverage class.
                Valid values: 0 - 114750

        phy <phyname> set coverage <coverage class>
                Set coverage class (1 for every 3 usec of air propagation time).
                Valid values: 0 - 255.

        phy <phyname> set netns { <pid> | name <nsname> }
                Put this wireless device into a different network namespace:
                    <pid>    - change network namespace by process id
                    <nsname> - change network namespace by name from /var/run/netns
                               or by absolute path (man ip-netns)


        phy <phyname> set retry [short <limit>] [long <limit>]
                Set retry limit.

        phy <phyname> set rts <rts threshold|off>
                Set rts threshold.

        phy <phyname> set frag <fragmentation threshold|off>
                Set fragmentation threshold.

        dev <devname> set channel <channel> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz]
        phy <phyname> set channel <channel> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz]
        dev <devname> set freq <freq> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz]
        dev <devname> set freq <control freq> [5|10|20|40|80|80+80|160] [<center1_freq> [<center2_freq>]]
        phy <phyname> set freq <freq> [NOHT|HT20|HT40+|HT40-|5MHz|10MHz|80MHz]
        phy <phyname> set freq <control freq> [5|10|20|40|80|80+80|160] [<center1_freq> [<center2_freq>]]
                Set frequency/channel the hardware is using, including HT
                configuration.

        phy <phyname> set name <new name>
                Rename this wireless device.

        dev <devname> set power_save <on|off>
                Set power save state to on or off.

        dev <devname> get mesh_param [<param>]
                Retrieve mesh parameter (run command without any to see available ones).

        phy <phyname> get txq
                Get TXQ parameters.

        dev <devname> get power_save <param>
                Retrieve power save state.

        dev <devname> station dump [-v]
                List all stations known, e.g. the AP on managed interfaces

        dev <devname> station set <MAC address> txpwr <auto|limit> [<tx power dBm>]
                Set Tx power for this station.

        dev <devname> station set <MAC address> airtime_weight <weight>
                Set airtime weight for this station.

        dev <devname> station set <MAC address> mesh_power_mode <active|light|deep>
                Set link-specific mesh power mode for this station

        dev <devname> station set <MAC address> vlan <ifindex>
                Set an AP VLAN for this station.

        dev <devname> station set <MAC address> plink_action <open|block>
                Set mesh peer link action for this station (peer).

        dev <devname> station del <MAC address> [subtype <subtype>] [reason-code <code>]
                Remove the given station entry (use with caution!)
                Example subtype values: 0xA (disassociation), 0xC (deauthentication)

        dev <devname> station get <MAC address>
                Get information for a specific station.

        dev <devname> survey dump
                List all gathered channel survey data

        dev <devname> vendor recvbin <oui> <subcmd> <filename|-|hex data>


        dev <devname> vendor recv <oui> <subcmd> <filename|-|hex data>


        dev <devname> vendor send <oui> <subcmd> <filename|-|hex data>


        phy <phyname> wowlan show
                Show WoWLAN status.

        phy <phyname> wowlan disable
                Disable WoWLAN.

        phy <phyname> wowlan enable [any] [disconnect] [magic-packet] [gtk-rekey-failure] [eap-identity-request] [4way-handshake] [rfkill-release] [net-detect [interval <in_msecs> | scan_plans [<interval_secs:iterations>*] <interval_secs>] [delay <in_secs>] [freqs <freq>+] [matches [ssid <ssid>]+]] [active [ssid <ssid>]+|passive] [randomise[=<addr>/<mask>]]] [tcp <config-file>] [patterns [offset1+]<pattern1> ...]
                Enable WoWLAN with the given triggers.
                Each pattern is given as a bytestring with '-' in places where any byte
                may be present, e.g. 00:11:22:-:44 will match 00:11:22:33:44 and
                00:11:22:33:ff:44 etc.
                Offset and pattern should be separated by '+', e.g. 18+43:34:00:12 will match '43:34:00:12' after 18 bytes of offset in Rx packet.

                The TCP configuration file contains:
                  source=ip[:port]
                  dest=ip:port@mac
                  data=<hex data packet>
                  data.interval=seconds
                  [wake=<hex packet with masked out bytes indicated by '-'>]
                  [data.seq=len,offset[,start]]
                  [data.tok=len,offset,<token stream>]

                Net-detect configuration example:
                 iw phy0 wowlan enable net-detect interval 5000 delay 30 freqs 2412 2422 matches ssid foo ssid bar


Commands that use the netdev ('dev') can also be given the
'wdev' instead to identify the device.

You can omit the 'phy' or 'dev' if the identification is unique,
e.g. "iw wlan0 info" or "iw phy0 info". (Don't when scripting.)

Do NOT screenscrape this tool, we don't consider its output stable.

root@tda4vm-sk:/opt/edge_ai_apps#

As opposed to the expected output shown below. 

  

Greatly appreciate assistance with this issue. 

Kind Regards

Chukwubuikem Ewelike (BK)

SCUTTLE Robotics

  • Hi Chukwubuikem,

    Could you check if the WiFi card is detected by the board with ifconfig -a. It should list itself as wlp1s0 or a similar name. 

    If the WiFi card is not listed, then please check that the card is seated well in the PCIe slot before rebooting.

    Regards,

    Takuma

  • Hi Takuma

    I apologize for the delayed reply, things have been quite busy on my end. I was able to run the ifconfig -a command and it did list the name of the WiFi card. Upon further trials of the  iw wlp1s0 link, I found that the command only sends the initial output posted whenever a there is no WiFi connection to a network. Shutting down the system, re-inserting the antennas of the WiFi card, and re-entering the credentials of my WiFi network was able to fix this connectivity issue for me. 

    Regards

    Chukwubuikem 

    SCUTTLE Robotics