ESP32 not connecting to wifi

Development Tools Cloud IoT
1

Hi, I am having issues with my ESP32 dev board. For some reason it is struggling to connect to the wifi, after I made some measurements with multimeter on pin 15. Serial monitor is showing endless attempts to connect without success. Board is not connected to anything else.

2

Hi @pariston_hill
I have an ESP32 logging power from my solar panel meter - described here

I use the esp32 wifi events to manage the wifi connection.

//wifi handling
// event handlers from https://techtutorialsx.com/2019/09/22/esp32-soft-ap-station-disconnected-event/

void initWiFi() {
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);   **//make sure your ssid & password are correct**
  Serial.print("initWiFi: Connecting to WiFi ..");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print('.');
    delay(1000);
  }
  //Serial.println(WiFi.localIP());
}


void WiFiStationConnected(WiFiEvent_t event, WiFiEventInfo_t info) {
  Serial.println("Connected to AP successfully!");
  WiFiState = 1;
  digitalWrite(LED_WiFi, WiFiState); //indicate wifi connected -  BLUE LED
}

void WiFiGotIP(WiFiEvent_t event, WiFiEventInfo_t info) {
  Serial.println("WiFi connected - hostname & IP address: ");
  Serial.print(WiFi.getHostname());
  Serial.println(WiFi.localIP());
}

void WiFiStationDisconnected(WiFiEvent_t event, WiFiEventInfo_t info) {
  Serial.println("Disconnected from WiFi access point");
  Serial.print("WiFi lost connection. Reason: ");
  Serial.println(info.disconnected.reason);
  Serial.println("Trying to Reconnect");
  WiFiState = 0;
  digitalWrite(LED_WiFi, WiFiState); //indicate wifi not connected -  BLUE LED
  WiFi.begin(ssid, password);
}

and in setup():

void setup() {
  Serial.begin(115200);
  pinMode(LED_WiFi, OUTPUT);
  pinMode(LED_Pulse, OUTPUT);
  pinMode(intPin, INPUT_PULLUP);
  
  digitalWrite(LED_WiFi, 0); //ensure blue LED off

  // added in V2.11:  delete old wifi config
  WiFi.disconnect(true);
    delay(200);

  WiFi.onEvent(WiFiStationConnected, SYSTEM_EVENT_STA_CONNECTED);
  WiFi.onEvent(WiFiGotIP, SYSTEM_EVENT_STA_GOT_IP);
  WiFi.onEvent(WiFiStationDisconnected, SYSTEM_EVENT_STA_DISCONNECTED);

  initWiFi();
  delay(200);

 ...

  Serial.println("Setup complete \n");
}
3

Maybe try the code you have on another ESP32, to see if you get the same problem.

4

Does the code also work on Arduino IoT Cloud sketch? if it does its gonna be a great help in solving this same problem as well

5

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