Get signal strength of wifi connection from Android drivers in terminal

Question

I am able to get RSSI for the current wifi network with the following command, but I need a command with faster response, this one is too slow:

dumpsys wifi | grep ", RSSI"

Is there a better way to get the signal strength from the android linux terminal?

I've also tried WifiInfo.getRssi() in java and it has about a 2 second delay between samples. I need about 200ms.

did you see this answer?http://stackoverflow.com/a/4173396/2101822 — Milad Faridnia, Dec 07 '14 at 08:30
please take a look at the comments they said it usualy takes 2-10 secs — Milad Faridnia, Dec 07 '14 at 08:31
That is referring to how long it takes before you get data after starting a scan, not how often you can sample the rss on the network you are connected to. — JBaczuk, Dec 07 '14 at 15:38

score 0 · Answer 1 · answered Aug 08 '20 at 15:10

Use the command below to change the rssi update interval to 200 ms. You may need root privilege.

adb shell cmd wifi set-poll-rssi-interval-msecs 200

I've also tried WifiInfo.getRssi() in java and it has about a 2 second delay between samples.

Yes, the default update interval is 3000 ms.

You can find the implementation in frameworks/opt/net/wifi/service/java/com/android/server/wifi/ClientModeImpl.java. In short, it updates the wifi state by wificond process, which communicates with the Wi-Fi driver over standard nl80211 commands. The update time interval is the private field mPollRssiIntervalMsecs. The class exposes this field by cmd command (see the WifiShellCommand class).

Get signal strength of wifi connection from Android drivers in terminal

1 Answers1