box-o-sand/arduino/msaqsg/ch03/UnreliableSwitch/UnreliableSwitch.ino

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395 B
Arduino
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2013-12-30 03:17:48 +00:00
const unsigned int BUTTON_PIN = 7;
const unsigned int LED_PIN = 13;
int ledState = LOW;
void setup() {
pinMode(LED_PIN, OUTPUT);
pinMode(BUTTON_PIN, INPUT);
}
void loop() {
const int CURRENT_BUTTON_STATE = digitalRead(BUTTON_PIN);
if (CURRENT_BUTTON_STATE == HIGH) {
ledState = HIGH;
} else {
ledState = LOW;
}
digitalWrite(LED_PIN, ledState);
}