56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/******************************************************************************
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* The MIT License
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*
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* Copyright (c) 2010 Perry Hung.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*****************************************************************************/
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/**
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* @file pwm.h
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*
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* @brief Arduino-compatible PWM interface.
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*/
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#ifndef _PWM_H_
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#define _PWM_H_
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/**
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* As a convenience, analogWrite is an alias of pwmWrite to ease
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* porting Arduino code. However, period and duty will have to be
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* recalibrated.
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*/
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#define analogWrite pwmWrite
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/**
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* Set the PWM duty on the given pin.
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*
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* User code is expected to determine and honor the maximum value
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* (based on the configured period).
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*
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* @param pin PWM output pin
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* @param duty_cycle Duty cycle to set.
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*/
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void pwmWrite(uint8 pin, uint16 duty_cycle);
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#endif
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