Let’s write an Arduino sketch of SPI communication for NodeMCU. Here NodeMCU is acting as a master device and we are using Arduino UNO as a slave device. In this example, we are sending the “Hello Slave” string with ‘\n’ as the ending of the string from the NodeMCU Master device...
代码 复制 /* https://breakrow.com/miliohm/temperature-and-humidity-sensor-dht11-with-arduino-...
OLED:SDA - SDA SCL - SCL */#include< SPI.h >#include< Wire.h >#include< Adafruit_GFX.h >#include< Adafruit_SSD1306.h >#include< Fonts/FreeMonoBold18pt7b.h >#include"DHT.h"#defineDHTPIN 10// data connection pin of DHT11#defineDHTTYPE DHT11// DHT 11DHTdht(DHTPIN, DHTTYPE)...
Serial.println("Connection Failed! Rebooting...");delay(1000);ESP.restart();} 复制代码 连接到Wi...
print("Wifi connection is ready! IP: "..T.IP) print("Waiting for updating data...") tmr.create():alarm(3000, tmr.ALARM_SINGLE, startup) end local disconnect_num = 0 wifi_disconnect_event = function(T) if T.reason == wifi.eventmon.reason.ASSOC_LEAVE then ...
Arduino-like hardware IO Advanced API for hardware IO, which can dramatically reduce the redundant work for configuring and manipulating hardware. Code like arduino, but interactively in Lua script. Nodejs style network API Event-driven API for network applications, which facilitates developers writing...
-- register event callbacks for WiFi eventswifi.sta.eventMonReg(wifi.STA_CONNECTING,function(previous_state)if(previous_state==wifi.STA_GOTIP)thenprint("Station lost connection with access point. Attempting to reconnect...")elseprint("STATION_CONNECTING")endend) ...
连接图(Connection Graph)请参考如下截图 Arduino 配置 下载并安装CH340G USB驱动 安装ESP8266模块 安装PubSubClient 库 (by Nick O'Leary) Sketch -> Include Library -> Manage Libraries... -> Type PubSub in Search field -> Install MQTT 云服务配置 ...
// Wait for connection while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } //If connection successful show IP address in serial monitor Serial.println(""); Serial.print("Connected to "); Serial.println(ssid); Serial.print("IP address: "); Serial.println(WiFi...
The following lua script runs the previous webserver script to start a connection. It the waits until an IP address is found and prints it out. Note how the timer object is using an object oriented method to create it and unregister it. ...