64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
|
/*
|
||
|
|
* button.c:
|
||
|
|
* Simple button test for the Quick2Wire interface board.
|
||
|
|
*
|
||
|
|
* Copyright (c) 2012-2013 Gordon Henderson. <projects@drogon.net>
|
||
|
|
***********************************************************************
|
||
|
|
* This file is part of wiringPi:
|
||
|
|
* https://projects.drogon.net/raspberry-pi/wiringpi/
|
||
|
|
*
|
||
|
|
* wiringPi is free software: you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
||
|
|
* the Free Software Foundation, either version 3 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* wiringPi is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU Lesser General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU Lesser General Public License
|
||
|
|
* along with wiringPi. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
***********************************************************************
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <wiringPi.h>
|
||
|
|
|
||
|
|
#define BUTTON 0
|
||
|
|
#define LED1 1
|
||
|
|
#define LED2 7
|
||
|
|
|
||
|
|
int main (void)
|
||
|
|
{
|
||
|
|
|
||
|
|
// Enable the on-goard GPIO
|
||
|
|
|
||
|
|
wiringPiSetup () ;
|
||
|
|
|
||
|
|
printf ("Raspberry Pi - Quick2Wire Mainboard Button & LED Test\n") ;
|
||
|
|
|
||
|
|
pinMode (BUTTON, INPUT) ;
|
||
|
|
pinMode (LED1, OUTPUT) ;
|
||
|
|
pinMode (LED2, OUTPUT) ;
|
||
|
|
|
||
|
|
digitalWrite (LED1, HIGH) ; // On-board LED on
|
||
|
|
digitalWrite (LED2, LOW) ; // 2nd LED off
|
||
|
|
|
||
|
|
for (;;)
|
||
|
|
{
|
||
|
|
if (digitalRead (BUTTON) == HIGH) // Swap LED states
|
||
|
|
{
|
||
|
|
digitalWrite (LED1, LOW) ;
|
||
|
|
digitalWrite (LED2, HIGH) ;
|
||
|
|
while (digitalRead (BUTTON) == HIGH)
|
||
|
|
delay (1) ;
|
||
|
|
digitalWrite (LED1, HIGH) ;
|
||
|
|
digitalWrite (LED2, LOW) ;
|
||
|
|
}
|
||
|
|
delay (1) ;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0 ;
|
||
|
|
}
|