getRssi method in wifi info class

Question

In class wifi info the getRssi() method

getRssi()
   {
     Return RSSI; 
   }

From where they get it? and from where they measure it? I know RSSI is the signal strength between the access point and the device, but i want to understand how they measure it here!

Answer 1

The data is calculated and set in WifiStateMachine's fetchRssiAndLinkSpeedNative().
Compilers often have a "Find implementation" or "Find usages" feature which will lead you to the source in many cases. (I used this feature on grepcode.com to find the method above.)