Add 'Seeed Wio Terminal/wifiscan.ino'

Seeed Wio Terminal/wifiscan.ino

@@ -0,0 +1,82 @@
+#include "rpcWiFi.h"
+#include "TFT_eSPI.h"
+
+TFT_eSPI tft;
+
+void setup()
+{
+  // Set up the display
+  tft.begin();
+  tft.setRotation(3);
+  tft.fillScreen(TFT_BLACK);
+  tft.setFreeFont(&FreeSans9pt7b);
+  tft.fillScreen(TFT_BLACK);
+
+  // Intro messages
+  tft.setTextColor(TFT_WHITE);
+  tft.drawString("Wi-Fi Scanner", 10, 10);
+  tft.setTextColor(TFT_RED);
+  tft.drawString("Scanning...", 10, 30);
+
+  // Set up WiFi
+  WiFi.mode(WIFI_STA);
+  WiFi.disconnect(); // Ensure we are not connected to an AP
+}
+
+void loop()
+{
+  // Scan for networks and create array of seen SSIDs
+  int number_of_networks = WiFi.scanNetworks();
+  String seen_ssids[number_of_networks];
+
+  // Reset the screen to it's title only to prepare to display APs
+  tft.fillScreen(TFT_BLACK);
+  tft.setTextColor(TFT_WHITE);
+  tft.drawString("Wi-Fi Networks:", 10, 10);
+
+  // Text positioning (starting at 10)
+  int textpos = 30;
+  int seen_ptr = 0;
+
+  // Loop through networks
+  for(int i = 0; i < number_of_networks; i++)
+  {
+    // Check if we already saw that SSID, we don't have much
+    // screen space, so there's no point showing repeats
+    bool seen = false;
+    for(int x = 0; x < number_of_networks; x++)
+    {
+      if(WiFi.SSID(i) == seen_ssids[x])
+      {
+        seen = true;
+        break;
+      }
+    }
+
+    // As long as it isn't already displayed, continue
+    if(!seen && WiFi.SSID(i)!="")
+    {
+      // Add a "*" to the start of the SSID if it is locked
+      String enc_string = "* ";
+      if(WiFi.encryptionType(i) == WIFI_AUTH_OPEN)
+      {
+        enc_string = "";
+      }
+      String text = enc_string + WiFi.SSID(i);
+
+      // Determine the font color based on signal strength
+      if(WiFi.RSSI(i) > -61){tft.setTextColor(TFT_GREEN);}
+      else if(WiFi.RSSI(i) < -60 && WiFi.RSSI(i) > -91){tft.setTextColor(TFT_ORANGE);}
+      else{tft.setTextColor(TFT_RED);}
+
+      // Print the SSID to screen
+      tft.drawString(text, 10, textpos);
+
+      // Adjust necessary counters
+      textpos += 20;
+      seen_ssids[seen_ptr] = WiFi.SSID(i);
+      seen_ptr++;
+    }
+  }
+  delay(5000);
+}