def get_connection(): """return a working WLAN(STA_IF) instance or None""" # First check if there already is any connection: if wlan_sta.isconnected(): return wlan_sta connected = False try: # ESP connecting to WiFi takes time, wait a bit and try again: time.sleep(3) if wlan_...
WiFiClient client; if (!client.connect(ruqest.host, ruqest.httpPort)) { Use_Serial.println("connection failed"); return 1; } delay(10); if (ruqest.postDate.length() && ruqest.postDate != "0") { String data = (String)ruqest.postDate; int length = data.length(); String postReques...
Serial.println("Connection successfully established"); break; case WL_CONNECT_FAILED: Serial.println("Connection failed"); break; } Serial.printf("Connection status: %d\n", WiFi.status()); Serial.print("RRSI: "); Serial.println(WiFi.RSSI()); previousMillis = currentMillis; } } 1. 2. 3...
1.首先创建产品，协议选择EDP。2.然后创建设备，通过页面来完成设备创建，具体如下图所示：3.接下来用e...
//print connection result if(WiFi.status() == WL_CONNECTED){ Serial.print(“Connected.”); Serial.println(“”);// print an empty line Serial.print(“NodeMCU ipaddress: ”); Serial.println(WiFi.localIP()); } else { Serial.println(“Connection failed - check your credentials or connectio...
The alternative way to reconnect with WiFi is to restart the ESP8266 NodeMCU device. By usingESP.restart()function, we can restart ESP8266 NodeMCU development board. This may recover the lost network connection. Implement theESP.restart()function insideloop() functionto check if your ESP module...
= WL_CONNECTED ) { delay(500); Serial.print("."); } Serial.println("connected"); timeClient.begin(); delay(10); } void loop() { if (WiFi.status() == WL_CONNECTED) { // check WiFi connection status int sensor_val = analogRead(LDR_PIN); Brightness =40; timeClient.update(); ...
("Esp8266","PASSWORD"); }voidloop() { server.handleClient();//Check if connection is alivedevice.connectDeviceToWiFi();//Update IP/MACdevice.checkAndUpdateConnectionInfo();if(digitalRead(D7) ==0){ Serial.println("Change state"); } device.checkAndUpdateTimestampOTP();//OTA CheckArduino...
NodeMCU就是这样的一款工具，一块基于LUA固件的ESP8266 WiFi SOC也才4美元左右。
// WiFi connection const char* ssid = "Mr.Robot"; // wifi name const char* password = "***"; // wifi password // Telegram bot #define botMyChatID "***" // reference to my phone's chat #define botToken "***" #define botName "***...