1
0
mirror of https://github.com/arduino/Arduino.git synced 2024-12-13 23:48:46 +01:00
Arduino/build/shared/examples/10.StarterKit/p02_SpaceshipInterface/p02_SpaceshipInterface.ino

69 lines
1.8 KiB
Arduino
Raw Normal View History

2012-10-12 19:23:48 +02:00
/*
Arduino Starter Kit example
Project 2 - Spaceship Interface
2012-10-12 19:23:48 +02:00
This sketch is written to accompany Project 2 in the
Arduino Starter Kit
2012-10-12 19:23:48 +02:00
Parts required:
1 green LED
2012-10-12 19:23:48 +02:00
2 red LEDs
pushbutton
10 kilohm resistor
3 220 ohm resistors
2012-10-12 19:23:48 +02:00
Created 13 September 2012
by Scott Fitzgerald
http://www.arduino.cc/starterKit
2012-10-12 19:23:48 +02:00
This example code is part of the public domain
2012-10-12 19:23:48 +02:00
*/
// Create a global variable to hold the
// state of the switch. This variable is persistent
// throughout the program. Whenever you refer to
2012-10-12 19:23:48 +02:00
// switchState, youre talking about the number it holds
int switchstate = 0;
void setup() {
// declare the LED pins as outputs
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
2012-10-12 19:23:48 +02:00
// declare the switch pin as an input
pinMode(2, INPUT);
2012-10-12 19:23:48 +02:00
}
void loop() {
2012-10-12 19:23:48 +02:00
// read the value of the switch
// digitalRead() checks to see if there is voltage
// on the pin or not
2012-10-12 19:23:48 +02:00
switchstate = digitalRead(2);
// if the button is not pressed
// turn on the green LED and off the red LEDs
2012-10-12 19:23:48 +02:00
if (switchstate == LOW) {
digitalWrite(3, HIGH); // turn the green LED on pin 3 on
digitalWrite(4, LOW); // turn the red LED on pin 4 off
digitalWrite(5, LOW); // turn the red LED on pin 5 off
}
// this else is part of the above if() statement.
2012-10-12 19:23:48 +02:00
// if the switch is not LOW (the button is pressed)
// turn off the green LED and blink alternatively the red LEDs
2012-10-12 19:23:48 +02:00
else {
digitalWrite(3, LOW); // turn the green LED on pin 3 off
digitalWrite(4, LOW); // turn the red LED on pin 4 off
digitalWrite(5, HIGH); // turn the red LED on pin 5 on
// wait for a quarter second before changing the light
delay(250);
digitalWrite(4, HIGH); // turn the red LED on pin 4 on
digitalWrite(5, LOW); // turn the red LED on pin 5 off
// wait for a quarter second before changing the light
delay(250);
}
}