2、数字串口读取 - Digital Read Serial Read a switch, print the state out to the Arduino Serial Monitor. 读取开关状态,并打印状态到 Arduino串口监视器。 This example shows you how to monitor the state of a switch by establishingserial communicationbetween your Arduino and your computer over USB. ...
Serial.print(analogRead(redPin)); Serial.print(","); Serial.print(analogRead(greenPin)); Serial.print(","); Serial.println(analogRead(bluePin)); } /* Processing code for this example // This example code is in the public domain. import processing.serial.*; float redValue = 0; // re...
}voidloop() {//Serial.println("loop:");//RS485.write("1234567890");String serial_data="";/*存放接收到的串口数据*/if(RS485.available()) {intc = RS485.read();/*读取一字节串口数据*/while(c >=0) { serial_data+= (char)c;/*存放到serial_data变量中*/c= RS485.read();/*继续读取...
Serial.println(sensorValue); delay(1); // delay in between reads for stability 在两次读取间延迟,以保持稳定性 } 2、模拟串口读取 - Analog Read Serial (1)原文地址 https://www.arduino.cc/en/Tutorial/BuiltInExamples/AnalogReadSerial (2)模拟串口读 - Analog Read Serial This example shows you ho...
while(!Serial) { ;//等待串口连接,仅使用本地 USB 端口 } Serial.print("正在初始化 SD 卡..."); // 检测是否初始化完成 if(!SD.begin()) { Serial.println("初始化失败!"); return; } Serial.println("初始化完成。"); // 查看是否存在"example.txt"文件 ...
In this Arduino Serial example, we will write text to the Arduino serial port, which will send it over the USB cable to your computer, which will then display that text in a terminal window. In the ‘setup()’ function mentioned above, add the following lines to start the Arduino serial...
初始化串口通信参数Serial.begin(9600);dht.begin();Serial.println(F("DHTxx Unified Sensor Example"));sensor_t sensor;dht.temperature().getSensor(&sensor);Serial.println(F("---"));Serial.println(F("Temperature Sensor"));Serial.print (F("Sensor Type: ")); Serial.println(sensor.name);Se...
Serial.println(sensorValue, DEC); 现在,当你打开Arduino IDE的串口监视器,你会看见“0”的数据流(如果开关打开)或者“1”的数据流(如果开关闭合) 当开关为高电平时,pin13的LED灯会变亮;开关为低电平时,LED灯熄灭 /* Input Pullup Serial This example demonstrates the use of pinMode(INPUT_PULLUP). It...
{digitalWrite(buzzer, HIGH);delay(500);digitalWrite(buzzer, LOW);lcd.clear();lcd.print("Please wait");lcd.setCursor(0,1);lcd.print("Downloding Data"); 之后,我们必须编写代码来清除EEPROM中的出勤数据。 if(digitalRead(del) ==0) {lcd.clear();lcd.print("Please Wait");lcd.setCursor(0,1)...
addEventListener(keypadEvent) Trigger an event if the keypad is used. You can load an example in the ArduinoIDE. [See File -> Examples -> Keypad -> Examples -> EventSerialKeypad] or see theKeypadEvent Examplecode. 如果使用键盘,则触发事件。您可以在Arduino IDE中加载示例。 [请参阅文件->示例...