kopia lustrzana https://github.com/k3ng/k3ng_cw_keyer
50 wiersze
1.9 KiB
C
50 wiersze
1.9 KiB
C
// ---------------------------------------------------------------------------
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// NewTone Library - v1.0 - 01/20/2013
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//
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// AUTHOR/LICENSE:
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// Created by Tim Eckel - teckel@leethost.com
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// Copyright 2013 License: GNU GPL v3 http://www.gnu.org/licenses/gpl-3.0.html
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//
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// LINKS:
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// Project home: http://code.google.com/p/arduino-new-tone/
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// Blog: http://arduino.cc/forum/index.php/XXX
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//
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// DISCLAIMER:
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// This software is furnished "as is", without technical support, and with no
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// warranty, express or implied, as to its usefulness for any purpose.
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//
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// PURPOSE:
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// Almost 1,300 bytes smaller code size than the Tone library. Faster execution
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// time. Exclusive use of port registers for fastest and smallest code. Higher
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// quality sound output than tone library. Plug-in replacement for Tone. Uses
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// timer 1 which may free up conflicts with the tone library.
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//
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// SYNTAX:
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// NewTone( pin, frequency [, length ] ) - Play a note on pin at frequency in Hz.
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// Parameters:
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// * pin - Pin speaker is wired to (other wire to ground, be sure to add an inline 100 ohm resistor).
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// * frequency - Play the specified frequency indefinitely, turn off with noNewTone().
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// * length - [optional] Set the length to play in milliseconds. (default: 0 [forever], range: 0 to 2^32-1)
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// noNewTone(pin) - Stop playing note (pin is optional, will always stop playing on pin that was last used).
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//
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// HISTORY:
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// 01/20/2013 v1.0 - Initial release.
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//
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// ---------------------------------------------------------------------------
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#ifndef NewTone_h
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#define NewTone_h
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#if defined(ARDUINO) && ARDUINO >= 100
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#include <Arduino.h>
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#else
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#include <WProgram.h>
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#endif
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#if defined(__AVR_ATmega8__) || defined(__AVR_ATmega128__)
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#define TIMSK1 TIMSK
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#endif
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void NewTone(uint8_t pin, unsigned long frequency, unsigned long length = 0);
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void noNewTone(uint8_t pin = 0);
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#endif |