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authorsiddhu89902017-04-19 11:56:09 +0530
committersiddhu89902017-04-19 11:56:09 +0530
commit645c51daadc9a5c9374b0465ded05f84bca65183 (patch)
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Copyright message updated in added files and libraries separated in 'thirdparty' folder
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+/*
+ * softTone.c:
+ * For that authentic retro sound...
+ * Er... A little experiment to produce tones out of a Pi using
+ * one (or 2) GPIO pins and a piezeo "speaker" element.
+ * (Or a high impedance speaker, but don'y blame me if you blow-up
+ * the GPIO pins!)
+ * Copyright (c) 2012 Gordon Henderson
+ ***********************************************************************
+ * 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/>.
+ ***********************************************************************
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern int softToneCreate (int pin) ;
+extern void softToneStop (int pin) ;
+extern void softToneWrite (int pin, int freq) ;
+
+#ifdef __cplusplus
+}
+#endif