mirror of
https://github.com/arduino/Arduino.git
synced 2024-12-11 22:24:13 +01:00
5d92c1ba8e
Conflicts: build/shared/examples/01.Basics/Blink/Blink.ino build/shared/examples/09.USB/Keyboard/KeyboardReprogram/KeyboardReprogram.ino build/shared/examples/10.StarterKit/p02_SpaceshipInterface/p02_SpaceshipInterface.ino hardware/arduino/cores/arduino/HardwareSerial.cpp
69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
/*
|
||
Arduino Starter Kit example
|
||
Project 2 - Spaceship Interface
|
||
|
||
This sketch is written to accompany Project 2 in the
|
||
Arduino Starter Kit
|
||
|
||
Parts required:
|
||
1 green LED
|
||
2 red LEDs
|
||
pushbutton
|
||
10 kilohm resistor
|
||
3 220 ohm resistors
|
||
|
||
Created 13 September 2012
|
||
by Scott Fitzgerald
|
||
|
||
http://arduino.cc/starterKit
|
||
|
||
This example code is part of the public domain
|
||
*/
|
||
|
||
// Create a global variable to hold the
|
||
// state of the switch. This variable is persistent
|
||
// throughout the program. Whenever you refer to
|
||
// switchState, you’re 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);
|
||
|
||
// declare the switch pin as an input
|
||
pinMode(2, INPUT);
|
||
}
|
||
|
||
void loop() {
|
||
|
||
// read the value of the switch
|
||
// digitalRead() checks to see if there is voltage
|
||
// on the pin or not
|
||
switchstate = digitalRead(2);
|
||
|
||
// if the button is not pressed
|
||
// turn on the green LED and off the red LEDs
|
||
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.
|
||
// if the switch is not LOW (the button is pressed)
|
||
// turn off the green LED and blink alternatively the red LEDs
|
||
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);
|
||
}
|
||
}
|
||
|