wi-fi modulation scheme

[noseed]

hi,

How can I check the connected modulation scheme(1DSSS,MCS0,MCS7)?

I'm testing with shell project in NCS 2.3.0.

I couldn't find the command.

Thank you.

 

[Håkon Alseth]

Hello,

 

You shall use the radio_test program to emit specific modulations. Here's the documentation for the sample:

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/samples/wifi/radio_test/sample_description.html#testing

 

Please note that you will see error messages in the uart console when running commands. This is a small bug from our side, which will be fixed in the next ncs version. The error messages are purely visual, meaning that the radio will still run commands as expected.

 

The below assumes channel 1 in all scenarios. To change this, change the number after the "wifi_radio_test init X"

1DSSS

You can setup DSSS with the following:

wifi_radio_test init 1
wifi_radio_test tx_pkt_preamble 1
wifi_radio_test tx_pkt_rate 1
wifi_radio_test tx_pkt_len 1024
wifi_radio_test tx_power 10
wifi_radio_test tx_pkt_gap 8600
wifi_radio_test tx 1

MCS0

MCS0 is setup with the following:

wifi_radio_test init 1
wifi_radio_test tx_pkt_tput_mode 1
wifi_radio_test tx_power 15
wifi_radio_test tx 1

MCS7

MCS7 is setup with the following:

wifi_radio_test init 1
wifi_radio_test tx_pkt_tput_mode 1
wifi_radio_test tx_pkt_mcs 7
wifi_radio_test tx_power 15
wifi_radio_test tx 1

 

Kind regards,

Håkon

[noseed]

Hi,

My explanation was not clear enough.

When connected to wi-fi AP, I want to check what modulation(DSSS,MCS) is connected.

I want to check what the wi-fi modulation state is set by the AP.

For example, it is not displayed in commands such as [net iface].

uart:~$ net iface



Interface 0x20001840 (Ethernet) [1]

===================================

Link addr : F4:CE:qq:00:1A:qq

MTU       : 1500

Flags     : AUTO_START,IPv4,IPv6

Ethernet capabilities supported:

        10 Mbits

        100 Mbits

        1 Gbits

IPv6 unicast addresses (max 4):

        fe80::f6ce:qqqq:fe00:qqqq autoconf preferred infinite

        fde9:qqqq:7c35:qqqq:f6ce:36ff:fe00:qqqq autoconf preferred

IPv6 multicast addresses (max 5):

        ff02::1

        ff02::1:ff00:qqqq

IPv6 prefixes (max 2):

        fde9:qqqq:7c35:qqqq::/64

IPv6 hop limit           : 64

IPv6 base reachable time : 30000

IPv6 reachable time      : 41107

IPv6 retransmit timer    : 0

IPv4 unicast addresses (max 1):

        192.168.50.213 DHCP preferred

IPv4 multicast addresses (max 1):

        <none>

IPv4 gateway : 192.168.50.1

IPv4 netmask : 255.255.255.0

DHCPv4 lease time : 86400

DHCPv4 renew time : 43200

DHCPv4 server     : 192.168.50.1

DHCPv4 requested  : 192.168.50.213

DHCPv4 state      : bound

DHCPv4 attempts   : 1

thank you.

[Håkon Alseth]

Hi,

 

"wifi status" gives you the link mode, but you do not get the bitrate directly from the shell sample, unfortunately.

You can check the access point to see which PHY rate each of your individual devices are operating on.

 

Kind regards,

Håkon