From 9da0dd42dc59672436e615c9a7b30a7f9a014549 Mon Sep 17 00:00:00 2001
From: Ard Kuijpers <ardkuijpers@mp.nl>
Date: Thu, 27 Feb 2020 16:47:26 +0100
Subject: [PATCH] Wifi scanner

---
 platformio.ini |  2 ++
 src/main.cpp   | 62 ++++++++++++++++++++++++++++++++++++++++++++++----
 2 files changed, 60 insertions(+), 4 deletions(-)

diff --git a/platformio.ini b/platformio.ini
index b20e1c0..66acc40 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -12,3 +12,5 @@
 platform = espressif8266
 board = nodemcuv2
 framework = arduino
+upload_speed = 921600
+monitor_speed = 115200
diff --git a/src/main.cpp b/src/main.cpp
index d999c6e..b322e0f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,15 +1,65 @@
 #include <Arduino.h>
+#include "ESP8266WiFi.h"
 
 #define TURN_ON LOW
 #define TURN_OFF HIGH
 
+#define wifi_ssid "etxean"
+#define wifi_password "4300sf08fhln"
+
+#define mqtt_server "192.168.249.5"
+#define mqtt_port "1883"
+#define mqtt_user "homedevice"
+#define mqtt_password "WNzAb4VazNFUPlpkn0ED"
+
+void heartbeat();
+void longbeat();
+
 void setup() {
-  Serial.begin(9600);
+  Serial.begin(115200);
   pinMode(LED_BUILTIN, OUTPUT);
+  
+  // Set WiFi to station mode and disconnect from an AP if it was previously connected
+  WiFi.mode(WIFI_STA);
+  WiFi.disconnect();
+  delay(100);
+  Serial.println("Setup done");
 }
 
 void loop() {
-  Serial.println("beat");
+  Serial.println("scan start");
+  heartbeat();
+
+  // WiFi.scanNetworks will return the number of networks found
+  int n = WiFi.scanNetworks();
+  Serial.println("scan done");
+  if (n == 0)
+    Serial.println("no networks found");
+  else
+  {
+    Serial.print(n);
+    Serial.println(" networks found");
+    for (int i = 0; i < n; ++i)
+    {
+      // Print SSID and RSSI for each network found
+      Serial.print(i + 1);
+      Serial.print(": ");
+      Serial.print(WiFi.SSID(i));
+      Serial.print(" (");
+      Serial.print(WiFi.RSSI(i));
+      Serial.print(")");
+      Serial.println((WiFi.encryptionType(i) == ENC_TYPE_NONE)?" ":"*");
+      delay(10);
+    }
+  }
+  Serial.println("");
+  longbeat();
+  // Wait a bit before scanning again
+  delay(5000);
+}
+
+void heartbeat() 
+{
   for (int i=0; i<2; i++)
   {
     digitalWrite(LED_BUILTIN, TURN_ON);
@@ -17,7 +67,11 @@ void loop() {
     digitalWrite(LED_BUILTIN, TURN_OFF);
     delay(100);
   }
-  Serial.println("off");
+}
+
+void longbeat() 
+{
+  digitalWrite(LED_BUILTIN, TURN_ON);
+  delay(500);
   digitalWrite(LED_BUILTIN, TURN_OFF);
-  delay(1500);
 }
\ No newline at end of file