wiringPi_Blueberry/examples/softTone.c
2023-08-11 15:53:17 +08:00

55 lines
1.5 KiB
C

/*
* softTone.c:
* Test of the softTone module in wiringPi
* Plays a scale out on pin 3 - connect pizeo disc to pin 3 & 0v
*
* 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 <errno.h>
#include <string.h>
#include <wiringPi.h>
#include <softTone.h>
#define PIN 3
int scale [8] = { 262, 294, 330, 349, 392, 440, 494, 525 } ;
int main ()
{
int i ;
wiringPiSetup () ;
softToneCreate (PIN) ;
for (;;)
{
for (i = 0 ; i < 8 ; ++i)
{
printf ("%3d\n", i) ;
softToneWrite (PIN, scale [i]) ;
delay (500) ;
}
}
}