Difference between revisions of "Wi-Fi-ESP32-E-Paper"

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<pre>
 
<pre>
 +
#include <WiFi.h>
 +
#include <WebServer.h>
 +
#include <Preferences.h>
 +
 +
Preferences prefs;
 +
WebServer server(80);
 +
 +
String ssid, pass;
 +
 +
const char* configPage = R"rawliteral(
 +
<!DOCTYPE html>
 +
<html>
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  <body>
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    <h2>Configuration WiFi</h2>
 +
    <form action="/save" method="POST">
 +
      SSID: <input type="text" name="ssid"><br>
 +
      Password: <input type="text" name="pass"><br>
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      <input type="submit" value="Save">
 +
    </form>
 +
  </body>
 +
</html>
 +
)rawliteral";
 +
 +
void handleRoot() {
 +
  server.send(200, "text/html", configPage);
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}
 +
 +
void handleSave() {
 +
  if (server.hasArg("ssid") && server.hasArg("pass")) {
 +
    ssid = server.arg("ssid");
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    pass = server.arg("pass");
 +
    prefs.begin("wifi", false);
 +
    prefs.putString("ssid", ssid);
 +
    prefs.putString("pass", pass);
 +
    prefs.end();
 +
    server.send(200, "text/html", "Paramètres sauvegardés. Redémarrage...");
 +
    delay(2000);
 +
    ESP.restart();
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  }
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}
 +
 +
bool connectToWiFi() {
 +
  prefs.begin("wifi", true);
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  ssid = prefs.getString("ssid", "");
 +
  pass = prefs.getString("pass", "");
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  prefs.end();
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 +
  if (ssid == "") return false;
 +
 +
  WiFi.begin(ssid.c_str(), pass.c_str());
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  Serial.print("Connexion à "); Serial.println(ssid);
 +
 +
  unsigned long start = millis();
 +
  while (WiFi.status() != WL_CONNECTED && millis() - start < 10000) {
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    delay(500);
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    Serial.print(".");
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  }
 +
  return WiFi.status() == WL_CONNECTED;
 +
}
 +
 +
void startAP() {
 +
  WiFi.softAP("XIAO_Config", "12345678");
 +
  Serial.println("AP démarré. IP: " + WiFi.softAPIP().toString());
 +
  server.on("/", handleRoot);
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  server.on("/save", HTTP_POST, handleSave);
 +
  server.begin();
 +
}
 +
 +
void setup() {
 +
  Serial.begin(115200);
 +
 +
  if (!connectToWiFi()) {
 +
    Serial.println("Échec connexion. Passage en mode AP.");
 +
    startAP();
 +
  } else {
 +
    Serial.println("Connecté au WiFi. IP: " + WiFi.localIP().toString());
 +
    // Ici vous pouvez lancer un serveur web normal ou autre logique
 +
  }
 +
}
 +
 +
void loop() {
 +
  server.handleClient();
 +
}
 
</pre>
 
</pre>

Revision as of 23:47, 18 December 2025

Code Wi-Fi & ESP32 & E-Paper

Wi-Fi-ESP32-E-Paper 

#include <WiFi.h>
#include <WebServer.h>
#include <Preferences.h>

Preferences prefs;
WebServer server(80);

String ssid, pass;

const char* configPage = R"rawliteral(
<!DOCTYPE html>
<html>
  <body>
    <h2>Configuration WiFi</h2>
    <form action="/save" method="POST">
      SSID: <input type="text" name="ssid"><br>
      Password: <input type="text" name="pass"><br>
      <input type="submit" value="Save">
    </form>
  </body>
</html>
)rawliteral";

void handleRoot() {
  server.send(200, "text/html", configPage);
}

void handleSave() {
  if (server.hasArg("ssid") && server.hasArg("pass")) {
    ssid = server.arg("ssid");
    pass = server.arg("pass");
    prefs.begin("wifi", false);
    prefs.putString("ssid", ssid);
    prefs.putString("pass", pass);
    prefs.end();
    server.send(200, "text/html", "Paramètres sauvegardés. Redémarrage...");
    delay(2000);
    ESP.restart();
  }
}

bool connectToWiFi() {
  prefs.begin("wifi", true);
  ssid = prefs.getString("ssid", "");
  pass = prefs.getString("pass", "");
  prefs.end();

  if (ssid == "") return false;

  WiFi.begin(ssid.c_str(), pass.c_str());
  Serial.print("Connexion à "); Serial.println(ssid);

  unsigned long start = millis();
  while (WiFi.status() != WL_CONNECTED && millis() - start < 10000) {
    delay(500);
    Serial.print(".");
  }
  return WiFi.status() == WL_CONNECTED;
}

void startAP() {
  WiFi.softAP("XIAO_Config", "12345678");
  Serial.println("AP démarré. IP: " + WiFi.softAPIP().toString());
  server.on("/", handleRoot);
  server.on("/save", HTTP_POST, handleSave);
  server.begin();
}

void setup() {
  Serial.begin(115200);

  if (!connectToWiFi()) {
    Serial.println("Échec connexion. Passage en mode AP.");
    startAP();
  } else {
    Serial.println("Connecté au WiFi. IP: " + WiFi.localIP().toString());
    // Ici vous pouvez lancer un serveur web normal ou autre logique
  }
}

void loop() {
  server.handleClient();
}
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