Serial.printf("The client %s connects to the public MQTT broker\n", client_id.c_str());if(client.connect(client_id.c_str(), mqtt_username, mqtt_password)) { Serial.println("Public EMQX MQTT broker connected"); }
void loop(){}#else#include"USB.h"#ifARDUINO_USB_CDC_ON_BOOT#defineHWSerial Serial0#defineUSBSerial Serial#else#defineHWSerial SerialUSBCDC USBSerial;#endifstatic void usbEventCallback(void* arg, esp_event_base_t event_base, int32_t event_id, void*event_data){if(event_base ==ARDUINO_U...
问Serial.println中的VSCode ESP32类型错误EN示例程序测试端口ad数值： #include "Arduino.h" #include ...
Serial.println("[Client connected]"); while (client.connected()) //如果客户端处于连接状态 { if (client.available()) //如果有可读数据 { audio.stopSong();//停止播放 String c = client.readStringUntil('\n'); Serial.print(c); preferences.putString("music", c); preferences.end(); client....
Serial.println("Http Event Disconnected"); break; } } void setup(){ Serial.begin(115200); Serial.print("Attempting to connect to SSID: "); WiFi.begin(ssid, password); // attempt to connect to Wifi network: while (WiFi.status() != WL_CONNECTED) { ...
Serial.println("开始读取"); EEPROM.begin(4096); //申请操作到地址4095(比如你只需要读写地址为100上的一个字节,该处也需输入参数101) for(int addr = 0; addr<4096; addr++) { int data = EEPROM.read(addr); //读数据 Serial.print(data); ...
Serial.println(packetIdPub); delay(2000); 8,订阅主题 通过以下代码,可以订阅配置好的主题 // 订阅MQTT主题,并QoS设置为2 uint16_t packetIdSub = mqttClient.subscribe(SubTopic, 2); Serial.print("Subscribing at QoS 2, packetId: "); Serial.println(packetIdSub); ...
Serial.println(xPortGetCoreID());for(;;){ digitalWrite(led2, HIGH); delay(500); digitalWrite(led2, LOW); delay(500); } }voidloop(){ } 实际效果 串口打印: 硬件连接非常简单,IO2与IO4各接一个LED灯即可,我们看看效果: led1每1秒闪烁一次,led2每500ms闪烁一次,这样就是真正的两个内核同时运行...
// Serial.println(outputText); } else { http.end(); Serial.printf("Error %i \n", httpResponseCode); return "<error>"; } } void setup() { // Initialize Serial Serial.begin(115200); // Connect to Wi-Fi network WiFi.mode(WIFI_STA); ...
Serial.println("City: " + String(weatherdata.city)); Serial.println("Weather: " + String(weatherdata.weather)); Serial.println("Temp High: " + String(weatherdata.high)); Serial.println("Temp Low: " + String(weatherdata.low));