综合知识单片机单选难度 3真题改编 · 2023
1900. 以下程序的功能最可能实现的是哪个？
const int greenLedPin = 3;
const int redLedPin = 4;
const int switchPin = 7;
void setup() {
pinMode(greenLedPin, OUTPUT);
pinMode(redLedPin, OUTPUT);
pinMode(switchPin, INPUT);
Serial.begin(9600);
}
void loop() {
int switchValue = 0;
switchValue = digitalRead(switchPin);
Serial.print(" Value of switch = ");
Serial.println(switchValue);
if (switchValue == 0) {
digitalWrite(redLedPin, HIGH);
digitalWrite(greenLedPin, LOW);
}
else {
digitalWrite(redLedPin, LOW);
digitalWrite(greenLedPin, HIGH);
}
}
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