rework WiFi

[Links2004]

rework WiFi class

• move docu to cpp and make it doxygen compatible
• rework mode management
• reduce memory footprint (less static variables inside functions)
• split code in several files for better overview (API access not changed)
• improve error handling and return values
• many small changes
• new functions
  • Generic
    • hook WiFi events
    • force Sleep Mode
    • set Output Power
  • STA
    • reconnect
    • setAutoConnect
    • getAutoConnect
    • setAutoReconnect
    • isConnected
  • AP
    • softAPgetStationNum

[Links2004]

@sticilface see: Links2004@640d0bb

[sticilface]

Whoops, good work! sorry still working my way through a lot of changes:)

[asetyde]

👍

[Links2004]

@sticilface the IP is not stored by the SDK or the WiFi class.
currently: if needed the user need to store the info itself.
if we want to change this we need a new memory segment for storing core internal infos.
for the moment I dont want to create a segment like this.

[sticilface]

Agree. :)

[Links2004]

rework done for now.
will keep the pull request open until tomorrow evening.
some review / testings are welcome its a big change ;)

[Links2004]

doxygen:
http://links2004.github.io/Arduino/d8/ded/class_e_s_p8266_wi_fi_class.html

[drmpf]

Any chance of adding support for client.isSendWaiting() to these changes
see the bottom of Request Event Driven (non-blocking) WiFi API #922 for the small number of changes needed to support this.

[Links2004]

i currently not rework the TCP / UDP stuff.
only the WiFi handling itself.

will take a look later.

[tzapu]

test results for the auto connect modifications

WiFi.setAutoConnect(false); & WiFi.begin("SSID", "password", 0, NULL, false);
does not connect
WiFi.setAutoConnect(false); & WiFi.begin("SSID", "password", 0, NULL, true);
does not connect 
WiFi.setAutoConnect(true); & WiFi.begin("SSID", "password", 0, NULL, false);
connects 
WiFi.setAutoConnect(true); & WiFi.begin("SSID", "password", 0, NULL, true);
connects
just WiFi.setAutoConnect(false); 
does not connect
just WiFi.setAutoConnect(true); 
connects

test code

  WiFi.mode(WIFI_STA);
  WiFi.setAutoConnect(true);
  WiFi.begin("SSID", "password", 0, NULL, false);
  int connRes = WiFi.waitForConnectResult();

It all seems OK, thank you very much. Maybe a bit confusing when setting connect to false and it still connects.

[Links2004]

@tzapu is the ESP may already connected when you call begin?
the SDK connects to the latest config, without any code in setup or loop.
can you test it with a WiFi.disconnect(true); delay(1000); before your test code?