Improve wifi_settings_connect documentation

README.md

@@ -71,11 +71,8 @@ Name|Description
 
 ## WiFi
 
-Example using the wifi\_settings\_connect library to connect to
-a WiFi hotspot. The library provides a way to store WiFi hotspot
-details in Flash and connect automatically, avoiding the need to
-specify build-time flags such as `WIFI_SSID` and `WIFI_PASSWORD`.
+Example using the wifi\_settings\_connect library from pico\_extras.
 
 Name|Description
 ---|---
-[wifi\_settings\_connect\_example](wifi_settings_connect/example)| Demonstrates connecting to a hotspot and sending UDP broadcasts
+[wifi\_settings\_connect\_example](wifi_settings_connect/example)| Demonstrates connecting to WiFi hotspots and sending UDP broadcasts

wifi_settings_connect/example/README.md

@@ -1,18 +1,21 @@
 # wifi\_settings\_connect example
 
-Example using the wifi\_settings\_connect library to connect to
-a WiFi hotspot. The library provides a way to store WiFi hotspot
-details in Flash and connect automatically, avoiding the need to
-specify build-time flags such as `WIFI_SSID` and `WIFI_PASSWORD`.
+Example using the wifi\_settings\_connect library to connect to a WiFi hotspot.
 
 The Flash storage location for hotspot details is specified in
 `include/wifi_settings/wifi_settings_configuration.h`. It is at
-`0x101ff000` (for Pico W) and `0x103fe000` (for Pico 2 W). To add your
-WiFi details at this location, please [see these
-instructions](https://github.com/jwhitham/pico-wifi-settings/blob/master/doc/SETTINGS_FILE.md).
-You can edit the settings as a text file and transfer it with `picotool`,
-or install a [setup application](https://github.com/jwhitham/pico-wifi-settings/blob/master/doc/SETUP_APP.md)
-to add or update WiFi details.
+`0x101fc000` (for Pico W) and `0x103fc000` (for Pico 2 W). This
+"wifi-settings file" is a text file which can be edited with any text editor.
+Here is an example of typical contents:
+```
+    ssid1=MyHomeWiFi
+    pass1=mypassword1234
+    ssid2=MyPhoneHotspot
+    pass2=secretpassword
+    country=GB
+```
+To add your WiFi details at this location, please [see the setup instructions in the pico-extras
+repo](https://github.com/raspberrypi/pico-extras/tree/master/src/rp2_common/wifi_settings_connect/doc/SETTINGS_FILE.md).
 
 To build this example, first run `cmake` at the top level of the
 `pico-playground` repository, specifying the locations for
@@ -34,7 +37,8 @@ directory, e.g.
 This will create the UF2 file to be downloaded to the Pico
 in `build/wifi_settings_connect/example`.
 
-The wifi\_settings\_connect library in `pico-extras` is a subset of a larger
-library, [wifi\_settings](https://github.com/jwhitham/pico-wifi-settings/),
-which adds remote update functions for both the WiFi settings
-and (optionally) your Pico application too.
+The example program will search for WiFi hotspots. If it finds a hotspot which
+matches those configured in Flash, then it will automatically
+connect to it and begin a UDP broadcast. The example program prints
+its status to the USB serial port; connect with a terminal program
+to see what it is doing.