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/*
* Author: Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2015 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <iostream>
#include <string>
#include <stdexcept>
#include "cjq4435.h"
using namespace upm;
using namespace std;
CJQ4435::CJQ4435(int pin)
{
if ( !(m_pwm = mraa_pwm_init(pin)) )
{
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_pwm_init() failed, invalid pin?");
return;
}
m_enabled = false;
}
CJQ4435::~CJQ4435()
{
if (m_enabled)
mraa_pwm_enable(m_pwm, 0);
mraa_pwm_close(m_pwm);
}
void CJQ4435::setPeriodUS(int us)
{
if (mraa_pwm_period_us(m_pwm, us) != MRAA_SUCCESS)
cerr << __FUNCTION__ << ": period specified is not supported"
<< endl;
}
void CJQ4435::setPeriodMS(int ms)
{
if (mraa_pwm_period_ms(m_pwm, ms) != MRAA_SUCCESS)
cerr << __FUNCTION__ << ": period specified is not supported"
<< endl;
}
void CJQ4435::setPeriodSeconds(float seconds)
{
if (mraa_pwm_period(m_pwm, seconds) != MRAA_SUCCESS)
cerr << __FUNCTION__ << ": period specified is not supported"
<< endl;
}
void CJQ4435::enable(bool enable)
{
m_enabled = enable;
mraa_pwm_enable(m_pwm, ((enable) ? 1 : 0));
}
void CJQ4435::setDutyCycle(float dutyCycle)
{
if (dutyCycle < 0.0)
dutyCycle = 0.0;
if (dutyCycle > 1.0)
dutyCycle = 1.0;
mraa_pwm_write(m_pwm, dutyCycle);
}
void CJQ4435::on()
{
// set a 1 second period, with 100% duty cycle
enable(false);
setPeriodUS(1000);
setDutyCycle(1.0);
enable(true);
}
void CJQ4435::off()
{
// set a 1 second period, with 0% duty cycle
enable(false);
setPeriodUS(1000);
setDutyCycle(0.0);
enable(true);
}
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