Quite a few changes here.

[wiringPi.git] / examples / tone.c

diff --git a/examples/tone.c b/examples/tone.c
index 8b1fcd7125e7a8677939c3d54cd337feda7c8617..0e8a47d85a842eb090270ba64d3876401de4f23a 100644 (file)
--- a/examples/tone.c
+++ b/examples/tone.c
@@ -1,3 +1,27 @@
+/*
+ * tone.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>
@@ -6,15 +30,13 @@
 #include <wiringPi.h>
 #include <softTone.h>
 
-#define RANGE          100
-#define        NUM_LEDS         12
+#define        PIN     3
 
 int scale [8] = { 262, 294, 330, 349, 392, 440, 494, 525 } ;
 
 int main ()
 {
-  int i, j ;
-  char buf [80] ;
+  int i ;
 
   if (wiringPiSetup () == -1)
   {
@@ -22,14 +44,14 @@ int main ()
     return 1 ;
   }
 
-  softToneCreate (3) ;
+  softToneCreate (PIN) ;
 
   for (;;)
   {
     for (i = 0 ; i < 8 ; ++i)
     {
       printf ("%3d\n", i) ;
-      softToneWrite (3, scale [i]) ;
+      softToneWrite (PIN, scale [i]) ;
       delay (500) ;
     }
   }