ESP Webserver returns "Wifi failed"

Projects Programming
1

Hello again, my webserver is returning Wifi Failed when looking in the browser. I don't need the page, but I am posting text and that also is not working. This is a snippet of my code: Is there anything I am doing wrong? The ap starts normal according to the serial monitor.

#include <Preferences.h>
#include <WebServer.h>
#include "esp32/rtc.h"
#include <FastLED.h>
#include <HTTPClient.h>
#include <time.h>

String uploadData(String row, float value);
String downloadData(String row, bool value);
String executeQuery(String query);

void setLed(String hex);
void fadeToColor(CRGB fromColor, CRGB toColor, int steps, int delayTime);
int minutesUntil(int targetMinutes);
int now();



int count = 0;
bool Joanne = true, active = true;

WebServer server(80);
Preferences data;

HTTPClient http;

CRGB led[1];

int SlaapTijd = 0, OntwaakTijd = 0;
int offTime = -1;

bool isNear() {if (digitalRead(D6) == LOW){return true;}else{return false;}}
bool isCharging() {if (digitalRead(D0) == LOW){return true;}else{return false;}}
bool afterSleep() {if (data.getInt("SlaapTijd") < now()){return true;}else{return false;}}
bool beforeWake() {if (now() < data.getInt("OntwaakTijd")){return true;}else{return false;}}
bool wasCharging = false;

bool connectWifi() {

  data.begin("Snuffel", false);

  String ssid = data.getString("ssid", "");
  String password = data.getString("pass", "");

  if (ssid.length() == 0 || password.length() == 0) {
      return false;
  }

  Serial.println("Verbinden met netwerk...");
  WiFi.begin(ssid.c_str(), password.c_str());

  int timeout = 10; // 10 seconden timeout om verbinding te maken
  while (WiFi.status() != WL_CONNECTED && timeout > 0) {
      delay(1000);
      timeout--;
  }

  if (WiFi.status() == WL_CONNECTED) {
    Serial.println("Verbonden met wifi");
    setupRTC();

    stopAPMode();
  } else {Serial.println("Kan niet verbinden");}

  data.end();

  return isWiFiActive();
}

// Functie om AP-modus te starten
void startAPMode() {
  WiFi.mode(WIFI_AP);
    WiFi.softAP("Snuffel", "123456789");
    delay(100);
    Serial.println("Access Point Started!");
    Serial.println(WiFi.softAPIP());
    server.on("/", handleRoot);
    server.begin();
}

void stopAPMode() {
    WiFi.softAPdisconnect(true);
    server.stop();
    WiFi.mode(WIFI_STA);
}

bool isWiFiActive() {
    return WiFi.status() == WL_CONNECTED;
}

void handleRoot() {
  data.putString("ssid", server.arg("ssid"));
  data.putString("pass", server.arg("pass"));
  String testValue = server.arg("test");

  if (testValue == "true") {
    server.send(200, "text/plain", "SnuffelWuppieValidated");
  } else {
    if (connectWifi()) {
        server.send(200, "text/plain", "Wifi Connected");
    } else {
        server.send(200, "text/plain", "Wifi Failed");
    }
  }
}

void getData() {
  if (downloadData("NewData", Joanne).toInt() == 1) {
    Serial.println("Downloading data...");
    data.putString("Lkleur", downloadData("Lkleur", Joanne));
    data.putString("Kkleur", downloadData("Kkleur", Joanne));
    data.putInt("SlaapTijd", downloadData("SlaapTijd", Joanne).toInt());
    data.putInt("OntwaakTijd", downloadData("OntwaakTijd", Joanne).toInt());
    data.putInt("SlaapDuratie", downloadData("SlaapDuratie", Joanne).toInt());
    uploadData("NewData", 0);
  }
}

void looped() {
  if (count == 10) {
    if (!isWiFiActive()) {
        connectWifi();
    }
    if (isCharging()) {
        getData();
    }
    if (active && downloadData("Slapen", !Joanne).toInt() == 1) {
        setLed(data.getString("Lkleur"));
    } else {
        setLed(data.getString("Kkleur"));
    }
    count = 0;
  }
  count++;
}

void setup() {
  Serial.begin(9600);

  FastLED.addLeds<WS2812B, 10, GRB>(led, 1);
  Serial.println("What about here");

  delay(500);

  led[0] = CRGB(0, 0, 0);
  FastLED.show();

  Serial.println("What about here6");

  pinMode(D6, INPUT);
  pinMode(D0, INPUT);

  Serial.println("What about here5");

  http.begin("my url");
  http.addHeader("Content-Type", "application/x-www-form-urlencoded");

  Serial.println("What about here2");

  if (!connectWifi()) {
    startAPMode();
  }

  Serial.println("What about here3");

}

void loop() {
  server.handleClient();
  delay(1000);

  data.begin("Snuffel", false);

  looped();

  if (isWiFiActive()) {
    if (isNear() && !afterSleep() && !active) {

      offTime = data.getInt("SlaapDuratie") + now();
      active = true;

      if (offTime > 1440) {
        offTime -= 1440;
      }

    } else if ((minutesUntil(offTime) > data.getInt("SlaapDuratie")) && !afterSleep()) {active = false;}

  }

  data.end();
}
2

You should not open a new topic when you have an active topic on the same subject: Esp32-C3 Bootlooping
Answer the open questions in your previous thread.

3

I answered that and sinds this is another topic I thought I would open a new one. This is about the web server not working. Not related to bootlooping.

4

I had just a look at the code, so I might have missed something, but I suspect it's because on "handleRoot()" you unnecessarily call "connectWiFi()" again. Try changing it into a "isWiFiActive()" call:

void handleRoot() {
  data.putString("ssid", server.arg("ssid"));
  data.putString("pass", server.arg("pass"));
  String testValue = server.arg("test");

  if (testValue == "true") {
    server.send(200, "text/plain", "SnuffelWuppieValidated");
  } else {
    //if (connectWifi()) {
    if (isWiFiActive()) {
        server.send(200, "text/plain", "Wifi Connected");
    } else {
        server.send(200, "text/plain", "Wifi Failed");
    }
  }
}

BTW, why do you need that check? When executing "handleRoot()" you're already connected to WiFi, you won't receive a GET if not connected, don't you think?... :wink:

5

Thanks for the reaction! I am not checking, the webserver is in AP mode at that point. It then recieves an ssid and pass for a network to connect to. I found the real problem: the data line wasnt open. It still returns Wifi Failed, but works as expected...

Your comment did help tho, so thanks!

6

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