twt setup: wrong parameter count

[ChengQing Zhao]

I want to use the example of "Wi Fi: Shell" to set TWT parameters by referring to the official documentation：

https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/protocols/wifi/station_mode/powersave.html

and blogs:

 https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/target-wake-time-on-the-nrf7002-dk 

i set the command such as :

wifi twt setup 0 0 1 1 0 1 1 1 65000 524000

OR

wifi twt setup 0 0 2 2 0 1 1 1 20 60000

but  it is print "setup: wrong parameter count", as shown in log :

uart:~$ > wifi status
wifi status
Status: successful
==================
State: COMPLETED
Interface Mode: STATION
Link Mode: WIFI 6 (802.11ax/HE)
SSID: OpenWrt_1F05DA_5G
BSSID: 94:83:C4:1F:05:DA
Band: 5GHz
Channel: 36
Security: WPA2-PSK
MFP: Optional
RSSI: -38
Beacon Interval: 100
DTIM: 1
TWT: Supported
uart:~$ > wifi twt setup 0 0 1 1 0 1 1 1 65000 524000
wifi twt setup 0 0 1 1 0 1 1 1 65000 524000
setup: wrong parameter count
setup - Start a TWT flow:
<negotiation_type, 0: Individual, 1: Broadcast, 2: Wake TBTT>
<setup_cmd: 0: Request, 1: Suggest, 2: Demand>
<dialog_token: 1-255> <flow_id: 0-7> <responder: 0/1> <trigger: 0/1>
<implicit:0/1> <announce: 0/1> <twt_wake_interval: 1-262144us>
<twt_interval: 1us-2^31us>.
<twt_wake_ahead_duration>: 0us-2^31us>

uart:~$ > wifi twt setup 0 0 2 2 0 1 1 1 20 600000
wifi twt setup 0 0 2 2 0 1 1 1 20 600000
setup: wrong parameter count
setup - Start a TWT flow:
<negotiation_type, 0: Individual, 1: Broadcast, 2: Wake TBTT>
<setup_cmd: 0: Request, 1: Suggest, 2: Demand>
<dialog_token: 1-255> <flow_id: 0-7> <responder: 0/1> <trigger: 0/1>
<implicit:0/1> <announce: 0/1> <twt_wake_interval: 1-262144us>
<twt_interval: 1us-2^31us>.
<twt_wake_ahead_duration>: 0us-2^31us>

uart:~$ > wifi twt setup 0 0 2 2 0 1 1 1 20 300000
wifi twt setup 0 0 2 2 0 1 1 1 20 300000
setup: wrong parameter count
setup - Start a TWT flow:
<negotiation_type, 0: Individual, 1: Broadcast, 2: Wake TBTT>
<setup_cmd: 0: Request, 1: Suggest, 2: Demand>
<dialog_token: 1-255> <flow_id: 0-7> <responder: 0/1> <trigger: 0/1>
<implicit:0/1> <announce: 0/1> <twt_wake_interval: 1-262144us>
<twt_interval: 1us-2^31us>.
<twt_wake_ahead_duration>: 0us-2^31us>

[01:11:20.519,226] <inf> wpa_supp: nordic_wlan0: WPA: Group rekeying completed with 94:83:c4:1f:05:da [GTK=TKIP]
uart:~$

so, can you give me some help, thank you very much!

[Håkon Alseth]

Hi,

 

There was a new addition to the twt command in wifi/shell, which is the last parameter:

<twt_wake_ahead_duration>: 0us-2^31us>

You can set this to '0' if you want.

 

Another tip is to use the wifi/twt sample as well for evaluation of this power saving feature.

 

Kind regards,

Håkon

[ChengQing Zhao]

Thank you H å kon Alseth for your prompt response. I have encountered a new issue again, as you provided. I added 0 at the end, but still cannot negotiate successfully.

The command comes from the blog：

 https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/target-wake-time-on-the-nrf7002-dk 

The log print as:

uart:~$ > wifi twt setup 0 0 2 2 0 1 1 1 20 60000 0
wifi twt setup 0 0 2 2 0 1 1 1 20 60000 0
TWT setup with TWT individual negotiation failed. reason : Peer not TWT capable
[02:19:52.113,739] <inf> wpa_supp: nordic_wlan0: WPA: Group rekeying completed with 94:83:c4:1f:05:da [GTK=TKIP]
uart:~$

[Håkon Alseth]

Hi,

 

ChengQing Zhao said:

TWT setup with TWT individual negotiation failed. reason : Peer not TWT capable

This means that the AP is not capable of TWT. Which access point specifically are you using? If it is wifi 6 capable, it might be that you need to enable Target Wake Time specifically in the router web UI.

 

Kind regards,

Håkon