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[GH-ISSUE #1747] Blue LED #1482

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opened 2026-02-28 01:30:14 +03:00 by kerem · 1 comment

kerem commented

2026-02-28 01:30:14 +03:00

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Originally created by @RaptorSDS on GitHub (Jul 5, 2024).
Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/1747

Basic Infos

one sketch activate blue LED ,one didnt activate blue led when wifi connect

Hardware

WiFimanager Branch/Release: latest arduino libary manager

Esp8266:

Hardware: ESP01

Core Version: 2.2.1 +100

Description

one sketch activate blue LED ,one didnt activate blue led when wifi connect
same module , same pc , same IDE ,.....

Settings in IDE

Module: Generic ESp8266 arduino Board manager 3.1.2
https://arduino.esp8266.com/stable/package_esp8266com_index.json

Additional libraries:

Sketch without blue led

#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h>
#include <ArduinoJson.h>

// WiFiManager
WiFiManager wifiManager;

// WebServer auf Port 80 initialisieren
ESP8266WebServer server(80);

void setup() {
// Serielle Schnittstelle starten
Serial.begin(115200); // RX, TX

// WiFiManager Konfiguration
if (!wifiManager.autoConnect("ESP8266-Config")) {
//Serial.println("failed to connect and hit timeout");
ESP.restart();
}

Serial.println("WiFi connected!");

// Webserver Endpunkte definieren
server.on("/", handleRoot);
server.on("/rawdata", handleRawData);
server.on("/jsondata", handleJsonData);
server.on("/trigger", HTTP_GET, handleTriggerMeasurement); // Neuer Endpunkt für manuelle Messung

server.begin();
// Serial.println("HTTP server started");
}

void loop() {
server.handleClient();

// Serielle Daten lesen und verarbeiten
while (Serial.available() >= 7) {
uint8_t response[7];
for (int i = 0; i < 7; i++) {
response[i] = Serial.read();
}

// Überprüfen, ob die empfangene Nachricht gültig ist
if (response[0] == 0x01 && response[1] == 0x03 && response[2] == 0x02) {
  uint16_t distance_mm = (response[4] << 8) | response[3]; // Umwandlung von Hex in mm
  height_mm = SENSOR_HOEHE_MM - distance_mm;

  // Sicherheitsprüfungen
  if (height_mm < 0 || height_mm > SENSOR_HOEHE_MM) {
    //Serial.println("Ungültiger Wert empfangen: " + String(height_mm) + "mm");
    return;
  }

  // Begrenze den Wert auf MAX_FUELLSTAND_MM
  if (height_mm > MAX_FUELLSTAND_MM) {
    height_mm = MAX_FUELLSTAND_MM;
  }

  // Speichere den aktuellen Messwert in der Historie
  heightHistory[historyIndex] = height_mm;
  historyIndex = (historyIndex + 1) % 6;

  // Berechne den gleitenden Mittelwert der letzten 6 Messungen
  int sum = 0;
  for (int i = 0; i < 6; i++) {
    sum += heightHistory[i];
  }
  height_mm = sum / 6;
  
  // Sicherheitsprüfung des gleitenden Mittelwerts
  if (height_mm < 0 || height_mm > SENSOR_HOEHE_MM) {
    //Serial.println("Ungültiger gleitender Mittelwert: " + String(height_mm) + "mm");
    return;
  }

  current_liters = calculateVolume(height_mm);

  // Speichere den gleitenden Mittelwert alle 6 Messungen (entspricht 1 Minute)
  if (historyIndex == 0) {
    minuteHistory[minuteIndex] = height_mm;
    minuteIndex = (minuteIndex + 1) % 5;
  }
}

}
.........
}

Sketch with blue led

#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h> // https://github.com/tzapu/WiFiManager
#include <ArduinoJson.h> // https://arduinojson.org/v6/doc/installation/

// WiFiManager
WiFiManager wifiManager;

// WebServer auf Port 80 initialisieren
ESP8266WebServer server(80);

// Pin-Definitionen für den Ultraschallsensor
const int TRIGGER_PIN = 1; // TX Pin als Trigger
const int ECHO_PIN = 3; // RX Pin als Echo

void setup() {
// Serielle Schnittstelle starten
// Serial.begin(9600);

// WiFiManager Konfiguration
wifiManager.autoConnect("ESP8266-Config"); // AP-Name für Konfigurationsportal

server.begin();

//Serial.println("HTTP server started");

// Initiale Pin-Konfiguration für Ultraschallsensor
pinMode(TRIGGER_PIN, OUTPUT);
pinMode(ECHO_PIN, INPUT);
digitalWrite(TRIGGER_PIN, LOW);
// Initiale Messung durchführen
performSingleMeasurement();
current_liters = calculateVolume(height_mm); // Erste Messung speichern
}

void loop() {
server.handleClient();
digitalWrite(TRIGGER_PIN, LOW);

static unsigned long lastMeasurement = 0;
if (millis() - lastMeasurement >= 60000) { // 1 Minute = 60000 ms
lastMeasurement = millis();
performMultipleMeasurements();
}
}

void performSingleMeasurement() {
// Sende Trigger-Puls
digitalWrite(TRIGGER_PIN, LOW);
delayMicroseconds(2);
digitalWrite(TRIGGER_PIN, HIGH);
delayMicroseconds(20);
digitalWrite(TRIGGER_PIN, LOW);

}

v-..........
}

Debug Messages

messages here
i didnt see any reson why this diffirent behavior only serial pin 1 and 3 are diffirent not 16 or anything with wifi

Originally created by @RaptorSDS on GitHub (Jul 5, 2024). Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/1747 ### Basic Infos one sketch activate blue LED ,one didnt activate blue led when wifi connect #### Hardware WiFimanager Branch/Release: latest arduino libary manager Esp8266: Hardware: ESP01 Core Version: 2.2.1 +100 ### Description one sketch activate blue LED ,one didnt activate blue led when wifi connect same module , same pc , same IDE ,..... ### Settings in IDE Module: Generic ESp8266 arduino Board manager 3.1.2 https://arduino.esp8266.com/stable/package_esp8266com_index.json Additional libraries: ### Sketch without blue led #include <ESP8266WiFi.h> #include <ESP8266WebServer.h> #include <WiFiManager.h> #include <ArduinoJson.h> // WiFiManager WiFiManager wifiManager; // WebServer auf Port 80 initialisieren ESP8266WebServer server(80); void setup() { // Serielle Schnittstelle starten Serial.begin(115200); // RX, TX // WiFiManager Konfiguration if (!wifiManager.autoConnect("ESP8266-Config")) { //Serial.println("failed to connect and hit timeout"); ESP.restart(); } Serial.println("WiFi connected!"); // Webserver Endpunkte definieren server.on("/", handleRoot); server.on("/rawdata", handleRawData); server.on("/jsondata", handleJsonData); server.on("/trigger", HTTP_GET, handleTriggerMeasurement); // Neuer Endpunkt für manuelle Messung server.begin(); // Serial.println("HTTP server started"); } void loop() { server.handleClient(); // Serielle Daten lesen und verarbeiten while (Serial.available() >= 7) { uint8_t response[7]; for (int i = 0; i < 7; i++) { response[i] = Serial.read(); } // Überprüfen, ob die empfangene Nachricht gültig ist if (response[0] == 0x01 && response[1] == 0x03 && response[2] == 0x02) { uint16_t distance_mm = (response[4] << 8) | response[3]; // Umwandlung von Hex in mm height_mm = SENSOR_HOEHE_MM - distance_mm; // Sicherheitsprüfungen if (height_mm < 0 || height_mm > SENSOR_HOEHE_MM) { //Serial.println("Ungültiger Wert empfangen: " + String(height_mm) + "mm"); return; } // Begrenze den Wert auf MAX_FUELLSTAND_MM if (height_mm > MAX_FUELLSTAND_MM) { height_mm = MAX_FUELLSTAND_MM; } // Speichere den aktuellen Messwert in der Historie heightHistory[historyIndex] = height_mm; historyIndex = (historyIndex + 1) % 6; // Berechne den gleitenden Mittelwert der letzten 6 Messungen int sum = 0; for (int i = 0; i < 6; i++) { sum += heightHistory[i]; } height_mm = sum / 6; // Sicherheitsprüfung des gleitenden Mittelwerts if (height_mm < 0 || height_mm > SENSOR_HOEHE_MM) { //Serial.println("Ungültiger gleitender Mittelwert: " + String(height_mm) + "mm"); return; } current_liters = calculateVolume(height_mm); // Speichere den gleitenden Mittelwert alle 6 Messungen (entspricht 1 Minute) if (historyIndex == 0) { minuteHistory[minuteIndex] = height_mm; minuteIndex = (minuteIndex + 1) % 5; } } } ......... } ### Sketch with blue led #include <ESP8266WiFi.h> #include <ESP8266WebServer.h> #include <WiFiManager.h> // https://github.com/tzapu/WiFiManager #include <ArduinoJson.h> // https://arduinojson.org/v6/doc/installation/ // WiFiManager WiFiManager wifiManager; // WebServer auf Port 80 initialisieren ESP8266WebServer server(80); // Pin-Definitionen für den Ultraschallsensor const int TRIGGER_PIN = 1; // TX Pin als Trigger const int ECHO_PIN = 3; // RX Pin als Echo void setup() { // Serielle Schnittstelle starten // Serial.begin(9600); // WiFiManager Konfiguration wifiManager.autoConnect("ESP8266-Config"); // AP-Name für Konfigurationsportal // Webserver Endpunkte definieren server.on("/", handleRoot); server.on("/rawdata", handleRawData); server.on("/jsondata", handleJsonData); server.on("/trigger", HTTP_GET, handleTriggerMeasurement); // Neuer Endpunkt für manuelle Messung server.begin(); //Serial.println("HTTP server started"); // Initiale Pin-Konfiguration für Ultraschallsensor pinMode(TRIGGER_PIN, OUTPUT); pinMode(ECHO_PIN, INPUT); digitalWrite(TRIGGER_PIN, LOW); // Initiale Messung durchführen performSingleMeasurement(); current_liters = calculateVolume(height_mm); // Erste Messung speichern } void loop() { server.handleClient(); digitalWrite(TRIGGER_PIN, LOW); static unsigned long lastMeasurement = 0; if (millis() - lastMeasurement >= 60000) { // 1 Minute = 60000 ms lastMeasurement = millis(); performMultipleMeasurements(); } } void performSingleMeasurement() { // Sende Trigger-Puls digitalWrite(TRIGGER_PIN, LOW); delayMicroseconds(2); digitalWrite(TRIGGER_PIN, HIGH); delayMicroseconds(20); digitalWrite(TRIGGER_PIN, LOW); } v-.......... } ### Debug Messages ``` messages here i didnt see any reson why this diffirent behavior only serial pin 1 and 3 are diffirent not 16 or anything with wifi

kerem closed this issue

2026-02-28 01:30:15 +03:00

kerem commented

2026-02-28 01:30:15 +03:00

Author

Owner

@tablatronix commented on GitHub (Jul 6, 2024):

This is usually defined in board def by LED_BUILTIN, maybe you have the wrong board selected

@tablatronix commented on GitHub (Jul 6, 2024): This is usually defined in board def by LED_BUILTIN, maybe you have the wrong board selected