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      1 /*
      2  * Author: Zion Orent <zorent (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 <unistd.h>
     26 #include <iostream>
     27 #include <signal.h>
     28 #include "flex.h"
     29 
     30 using namespace std;
     31 
     32 bool shouldRun = true;
     33 
     34 void sig_handler(int signo)
     35 {
     36   if (signo == SIGINT)
     37     shouldRun = false;
     38 }
     39 
     40 int main()
     41 {
     42   signal(SIGINT, sig_handler);
     43 
     44 //! [Interesting]
     45   // The was tested with a Spectra Symbol flex sensor.
     46   // We attached a 22K resistor to a breadboard,
     47   // with 1 end attached to GND and the other connected to
     48   // both the flex sensor and A0.
     49   // The flex sensor was connected on 1 pin to the 22K resistor and A0
     50   // and on the other pin to 5V.
     51 
     52   // Instantiate a Flex sensor on analog pin A0
     53   upm::Flex *flex = new upm::Flex(0);
     54 
     55   while (shouldRun)
     56     {
     57       cout << "Flex value: " << flex->value() << endl;
     58       sleep(1);
     59     }
     60 //! [Interesting]
     61 
     62   cout << "Exiting" << endl;
     63 
     64   delete flex;
     65   return 0;
     66 }
     67