IcyFeather的博客

boolean pushButton1;boolean pushButton2;void setup() { // put your setup code here, to run once: pinMode(2,INPUT_PULLUP); pinMode(8,INPUT_PULLUP); pinMode(13,OUTPUT);}void loop() { // put your main code here, to run repeatedly: pushButto.

解决方法：数据线忘插了，插上去就好了

boolean pushButton;void setup() { // put your setup code here, to run once: pinMode(2,INPUT_PULLUP); pinMode(13,OUTPUT);}void loop() { // put your main code here, to run repeatedly: pushButton = digitalRead(2); if (pushButton) { //if pu.