《Arduino技术及应用》课件—第10章 Inputoutput高级应用 物联网应用开发 第十章I/O口高级应用 目录 1 10.1调声函数 ❖调声函数tone()主要使用在Arduino连接蜂鸣器或扬声器发生的场合，其实质是输出一个频率可调的方波，以此驱动蜂鸣器或扬声器振动发声。1.tone()功能：在一个引脚上产生一个特定频率的方波（50%...
#include <Arduino.h> int led = LED_BUILTIN; //在RPI Pico中 LED_BUILTIN=25 int btn = 1; void setup() { // put your setup code here, to run once: pinMode(led, OUTPUT); pinMode(btn,INPUT_PULLUP);//配置为上拉输入 } void loop() { digitalWrite(led,digitalRead(btn)); } 因为...
setup函数只能在Arduino板的每次上电或复位后运行一次。 INPUT- - OUTPUT- - RETURN- - Void Loop ( ) { } PURPOSE- 在创建了用于初始化并设置初始值的setup()函数后,loop()函数,正如它的名称所指,允许你的程序连续循环的更改和响应。可以使用它来主动控制Arduino板。 INPUT- - OUTPUT- - RETURN- - 3、A...
Rotary编码器有三个输出引脚,对于Arduino来说,它们都是INPUT引脚。这三个引脚分别是开关(Switch)、输出A(Output A)和输出B(Output B)。这些引脚使用pinMode函数声明为Input,如下所示。 1 2 3 4 //pin Mode declaration pinMode (Encoder_OuputA, INPUT); pinMode (Encoder_OuputB, INPUT); pinMode (Encoder...
对于Arduino，用pinMode将IO口设为INPUT的时候，其实IO的状态为浮空输入，浮空输入也称高阻输入，也就是...
9.6&=(compoundbitwiseand) 9.8|=(compoundbitwiseor) 变量部分 十、常量 10.1 HIGH|LOW(引脚电压定义) 10.2 INPUT|OUTPUT(数字引脚(Digital pins)定义) 10.3 true|false(逻辑层定义) 10.4 integerconstants(整数常量) 10.5 floating point constants(浮点常量) ...
Chapter 5. Advanced Input and Output What you have just learned inChapter 4are the most elementary operations we can do in Arduino: controlling digital output and reading digital input. If Arduino were some sort of human language, those would be two letters of its alphabet. Considering that th...
//configure pin2 as an input and enable the internal pull-up resistor pinMode(2, INPUT_PULLUP); pinMode(13, OUTPUT); } void loop() { //read the pushbutton value into a variable int sensorVal = digitalRead(2); //print out the value of the pushbutton ...
pinMode(button, INPUT); // to print first value of count_presses which is 0 Serial.println(count_presses); } void loop() { // read the button input pin: int button_state = digitalRead(button); // check state of a button, check for digital ones when button is pressed, and count ...
Controller found ");break;}pinMode(input1,OUTPUT);pinMode(input2,OUTPUT);pinMode(input3,OUTPUT);pinMode(input4,OUTPUT);}voidSTOP(){digitalWrite(input1,LOW);digitalWrite(input2,LOW);digitalWrite(input3,LOW);digitalWrite(input4,LOW);}//停止函数voidRUN(){digitalWrite(input1,HIGH);digitalWrite(...