Dynamically change WiFi power on Omega2 LTE
I want to dynamically change the wifi antenna power to save battery. I try to set txpower to a lower value.
I try to set it in /etc/config/wireless
config wifi-iface 'ap' option device 'radio0' option mode 'ap' option network 'wlan' option ifname 'ra0' option encryption 'psk2' option key 'xxxxxxxx' option disabled '0' option txpower '20' option ssid 'Omega-xxxx'
But when i try to get the power info
# winfo ra0 info ra0 ESSID: "Omega-xxxx" Access Point: aa:bb:cc:dd:ee:ff Mode: Client Channel: 1 (unknown) Tx-Power: unknown Link Quality: unknown/100 Signal: unknown Noise: unknown Bit Rate: 150.0 MBit/s Encryption: unknown Type: wext HW Mode(s): unknown Hardware: unknown [Generic WEXT] TX power offset: unknown Frequency offset: unknown Supports VAPs: no PHY name: ra0
There are not information in Tx-power field.
From my laptop the wifi omega strength signal has no change.
I have an Omega2 LTE.
How dynamically change the antenna power?