int connectionId = esp8266.read()-48; // subtract 48 because the read() function returns // the ASCII decimal value and 0 (the first decimal number) starts at 48 esp8266.find("pin="); // advance cursor to "pin=" int pinNumber = (esp8266.read()-48); // get first number i.e...
}//MQTT连接voidreconnect() {while(!client.connected()) { Serial.print("Attempting MQTT connection...");//Attempt to connectif(client.connect(client_id)) { Serial.println("connected");//连接成功时订阅主题client.subscribe(TOPIC); }else{ Serial.print("failed, rc="); Serial.print(client.sta...
1. 需要在arduino上使用mqtt需要使用库 " PubSubClient "。 2. 使ESP32连接到WiFi网络 3. 连接mqtt代理 4. 订阅主题 5. 发布信息 安装库: 打开arduino选择“工具”里的管理库,在管理库里搜索:Pub SubClient,安装完成后即可使用该库。 在这里先贴上代码,需要可直接copy #include<WiFi.h>#include<PubSubClien...
//Flags stating if should begin connecting and if the connection is up static boolean doConnect = false; static boolean connected = false; //Address of the peripheral device. Address will be found during scanning... static BLEAddress *pServerAddress; //Characteristicd that we want to read sta...
arduino ide mpu6050的库 操作步骤: 把esp32和mpu60插入面包板,用跳线连接二者,使用i2c通信协议,一共需要四根线,分别是电源正vcc,地gnd,数据sdl和时钟scl。打开arduino ide,在库中搜索mpu6050,然后安装它。第一个库,我的已经安装好了,如下图。打开file-example-mpu6050-mpu6050_raw,有现成的实例代码。由于...
flash chip connection (No serial data received.) 错误。相关参考链接（来自 http://forum.arduino....
● 串行连接（Serial connection）：数据通过单线一位一位地传输 I2C参考设计 在Arduino/ESP8266上，...
Arduino IDE的ESP32附加组件带有OTA库和OTAWebUpdater示例。您可以通过File > Examples >ArduinoOTA > ...
Recompile and upload the code to the device. Post the log of the wifi connection process. Author toula018 commented Mar 6, 2024 @lbernstone C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -hardware C:\Users\...
void loop(){ const int numberPoints = 7; float wifiStrength; // In each loop, make sure there is an Internet connection. if (WiFi.status() != WL_CONNECTED) { connectWiFi(); } // If a button press is detected, write the data to ThingSpeak. if (digitalRead(buttonPin) == LOW){ ...