描述

使用此項(xiàng)目了解更多關(guān)于您的按鈕的信息！

編碼：

#define buttonPin 2
#define ledPin 13
bool state = 0;
bool lastRead = 0;
void setup() {
 // put your setup code here, to run once:
Serial.begin(9600);
pinMode(2,INPUT);
pinMode(13,OUTPUT);
}
void loop() {
 // put your main code here, to run repeatedly:
state = digitalRead(2);
if(state != lastRead)
{
 Serial.println(state);
digitalWrite(ledPin,state)
 lastRead = state;
}
}

----------------------------------

#define buttonPin 2 

將單詞“buttonPin”定義為數(shù)字 2，所以當(dāng)你寫(xiě)“buttonPin”時(shí) = 當(dāng)你寫(xiě) 2

#define ledPin 13

將單詞“l(fā)edPin”定義為數(shù)字 13 所以當(dāng)你寫(xiě)“l(fā)edPin”時(shí) = 當(dāng)你寫(xiě) 13

bool state = 0; 

按鈕的狀態(tài)

bool lastRead = 0; 

按鈕的最后讀數(shù)

void setup() {
 // put your setup code here, to run once:
Serial.begin(9600);
pinMode(buttonPin,INPUT); 
}

?

Serial.begin(9600);

定義串行監(jiān)視器

pinMode(buttonPin,INPUT); 

定義“buttonPin”模式

void loop() {
 // put your main code here, to run repeatedly:
state = digitalRead(2);
if(state != lastRead)
{
 Serial.println(state);
digitalWrite(ledPin,state)
 lastRead = state;
}
}

?

state = digitalRead(2);

將按鈕的讀數(shù)置于“狀態(tài)”

if(state != lastRead)

如果“狀態(tài)”不是“l(fā)astReading”

Serial.println(state);

將“狀態(tài)”打印到串行監(jiān)視器中

digitalWrite(ledPin,state)

將按鈕的狀態(tài)寫(xiě)入引腳 13

lastRead = state;

使“l(fā)astRead”=“狀態(tài)”值