Created
July 15, 2011 22:27
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Using a push button to cycle between different patterns of blinking LEDs with Arduino.
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/* | |
Copyright (C) 2011 | |
Robert L Szkutak II - http://robertszkutak.com | |
- https://plus.google.com/114751145822522043067 | |
This software is provided 'as-is', without any express or implied | |
warranty. In no event will the authors be held liable for any | |
damages arising from the use of this software. | |
Permission is granted to anyone to use this software for any | |
purpose, including commercial applications, and to alter it and | |
redistribute it freely, subject to the following restrictions: | |
1. The origin of this software must not be misrepresented; you | |
must not claim that you wrote the original software. If you use | |
this software in a product, an acknowledgment in the product | |
documentation would be appreciated but is not required. | |
2. Altered source versions must be plainly marked as such, and | |
must not be misrepresented as being the original software. | |
3. This notice may not be removed or altered from any source | |
distribution. | |
*/ | |
char mode = 0; | |
boolean pressed = false; | |
void clearLEDs(); | |
boolean checkButton(); | |
void setup() | |
{ | |
pinMode(2, INPUT); | |
for(int i = 8; i < 14; i++) | |
{ | |
pinMode(i, OUTPUT); | |
digitalWrite(i, LOW); | |
} | |
} | |
void loop() | |
{ | |
if(mode == 0 || mode == 2) | |
{ | |
for(int i = 13; i >= 8; i--) | |
{ | |
if(checkButton() == true) | |
break; | |
digitalWrite(i, HIGH); | |
delay(100); | |
digitalWrite(i, LOW); | |
} | |
} | |
if(mode == 1 || mode == 2) | |
{ | |
for(int i = 8; i <= 13; i++) | |
{ | |
if(checkButton() == true) | |
break; | |
digitalWrite(i, HIGH); | |
delay(100); | |
digitalWrite(i, LOW); | |
} | |
} | |
} | |
void clearLEDs() | |
{ | |
for(int i = 8; i < 14; i++) | |
digitalWrite(i, LOW); | |
} | |
boolean checkButton() | |
{ | |
char state = digitalRead(2); | |
if(state == HIGH && pressed == false) | |
{ | |
pressed = true; | |
return false; | |
} | |
if(state == LOW && pressed == true) | |
{ | |
mode++; | |
if(mode > 2) | |
mode = 0; | |
clearLEDs(); | |
pressed = false; | |
return true; | |
} | |
return false; | |
} |
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