`mpaper_wifi_scan.ino`

M5Stack M5Paper · File : mpaper_wifi_scan.ino · Language : C++ · Use case : Scanner les réseaux Wi-Fi disponibles et afficher la force du signal sur l'écran e-Ink.

Scan surrounding Wi-Fi networks with RSSI display on the e-Ink screen.

Hardware: M5Paper. Software: WiFi.h and M5Paper.h libraries. Execution: Code starts station mode, runs a scan, then displays SSIDs and RSSI. The screen is updated once to save battery.

mpaper_wifi_scan.ino

#include <M5Paper.h>
#include <WiFi.h>

void setup() {
  M5.begin();
  Serial.begin(115200);
  
  // Initialisation de l'écran e-Ink
  M5.display.setTextSize(2);
  M5.display.setTextColor(BLACK);
  M5.display.setCursor(0, 0);
  M5.display.println("Scanning WiFi...");
  M5.display.update();

  WiFi.mode(WIFI_STA);
  WiFi.disconnect();
  delay(100);

  int n = WiFi.scanNetworks();
  
  if (n == 0) {
    M5.display.println("No networks found");
  } else {
    M5.display.clear();
    M5.display.setCursor(0, 0);
    M5.display.println("Networks Found:");
    for (int i = 0; i < n; ++i) {
      // Limiter l'affichage pour éviter le débordement
      if (i > 8) break; 
      M5.display.print(i + 1);
      M5.display.print(": ");
      M5.display.print(WiFi.SSID(i));
      M5.display.print(" (");
      M5.display.print(WiFi.RSSI(i));
      M5.display.println(")");
      delay(10);
    }
  }
  M5.display.update();
}

void loop() {
  delay(10000);
}

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