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/*
* Author: Sarah Knepper <sarah.knepper@intel.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 <string>
#include <stdexcept>
#include "ttp223.h"
using namespace upm;
TTP223::TTP223(unsigned int pin) {
// initialize gpio input
if ( !(m_gpio = mraa_gpio_init(pin)) )
{
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_gpio_init() failed, invalid pin?");
return;
}
mraa_gpio_dir(m_gpio, MRAA_GPIO_IN);
m_name = "ttp223";
m_isrInstalled = false;
}
TTP223::~TTP223() {
// close gpio input
mraa_gpio_close(m_gpio);
}
std::string TTP223::name() {
return m_name;
}
int TTP223::value() {
return mraa_gpio_read(m_gpio);
}
bool TTP223::isPressed() {
return this->value() == 1;
}
#ifdef JAVACALLBACK
void TTP223::installISR(mraa::Edge level, jobject runnable)
{
installISR(level, mraa_java_isr_callback, runnable);
}
#endif
void TTP223::installISR(mraa::Edge level, void (*isr)(void *), void *arg)
{
if (m_isrInstalled)
uninstallISR();
// install our interrupt handler
mraa_gpio_isr(m_gpio, (mraa_gpio_edge_t) level, isr, arg);
m_isrInstalled = true;
}
void TTP223::uninstallISR()
{
mraa_gpio_isr_exit(m_gpio);
m_isrInstalled = false;
}
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