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      1 /*
      2  * Author: Zion Orent <sorent (at) ics.com>
      3  * Copyright (c) 2015 Intel Corporation.
      4  *
      5  * Permission is hereby granted, free of charge, to any person obtaining
      6  * a copy of this software and associated documentation files (the
      7  * "Software"), to deal in the Software without restriction, including
      8  * without limitation the rights to use, copy, modify, merge, publish,
      9  * distribute, sublicense, and/or sell copies of the Software, and to
     10  * permit persons to whom the Software is furnished to do so, subject to
     11  * the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be
     14  * included in all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     19  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
     20  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     21  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     22  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     23  */
     24 
     25 #include <string>
     26 #include <stdexcept>
     27 
     28 #include "groveelectromagnet.h"
     29 
     30 using namespace upm;
     31 
     32 GroveElectromagnet::GroveElectromagnet(int pin)
     33 {
     34     if ( !(m_gpio = mraa_gpio_init(pin)) )
     35       {
     36         throw std::invalid_argument(std::string(__FUNCTION__) +
     37                                     ": mraa_gpio_init() failed, invalid pin?");
     38         return;
     39       }
     40     mraa_gpio_dir(m_gpio, MRAA_GPIO_OUT);
     41 }
     42 
     43 GroveElectromagnet::~GroveElectromagnet()
     44 {
     45     mraa_gpio_close(m_gpio);
     46 }
     47 
     48 void GroveElectromagnet::on()
     49 {
     50 	mraa_result_t error = MRAA_SUCCESS;
     51 	error = mraa_gpio_write (m_gpio, HIGH);
     52 	if (error != MRAA_SUCCESS)
     53 		mraa_result_print(error);
     54 }
     55 
     56 void GroveElectromagnet::off()
     57 {
     58 	mraa_result_t error = MRAA_SUCCESS;
     59 	error = mraa_gpio_write (m_gpio, LOW);
     60 	if (error != MRAA_SUCCESS)
     61 		mraa_result_print(error);
     62 }
     63