2011-10-17 22:25:55 +02:00
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/*
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* analog.h
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*
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* Lightweight macro implementation of Arduino style pin numbering
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* for AVR microprocessors. Because only thing I want to use from
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* Arduino libraries is the pin numbering scheme.
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*
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* This file taken 99% from the excellent ArduinoLite project by
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* Shikai Chen <csk@live.com>. Some minor changes to suite my personal
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* coding taste.
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*
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* http://code.google.com/p/arduino-lite/
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* http://www.csksoft.net/
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*
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* Copyright (c) 2010-2011 Shikai Chen
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*
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* Licensed under the LGPL 2.1 license:
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* http://www.opensource.org/licenses/lgpl-2.1.php
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*/
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2011-10-17 21:30:22 +02:00
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#ifndef ANALOG_H
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#define ANALOG_H
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#include "pins.h"
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#define PWM_ENABLE(pin) EXPAND_WRAPPER(_PWM_ENABLE ,ARDUINOPIN_TO_TCCRID(pin) , ARDUINOPIN_TO_TIMERID(pin) )
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#define PWM_DISABLE(pin) EXPAND_WRAPPER(_PWM_DISABLE ,ARDUINOPIN_TO_TCCRID(pin) , ARDUINOPIN_TO_TIMERID(pin) )
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#define PWM_SET(pin, val) EXPAND_WRAPPER(_PWM_SET, ARDUINOPIN_TO_TIMERID(pin), val )
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#define analog_write( pin, val ) \
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do{ \
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PWM_ENABLE(pin); \
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PWM_SET(pin,val); \
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} \
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while(0)
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#define PWM_SET_SAFE(pin, val) \
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do{ \
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if (val) {PIN_MODE(pin,OUTPUT);PWM_SET(pin, val);} \
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else PIN_MODE(pin, INPUT); \
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}while(0)
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#endif /* ANALOG_H */
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