upm/examples/wt5001.cxx

/*
 * Author: Jon Trulson <jtrulson@ics.com>
 * Copyright (c) 2014 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 <unistd.h>
#include <iostream>
#include <signal.h>
#include "wt5001.h"

using namespace std;

void printUsage(char *progname)
{
  cout << "Usage:" << progname << " <command>" << endl;
  cout << "Commands:" << endl;
  cout << "0  - stop playing" << endl;
  cout << "1  - start playing track 1" << endl;
  cout << "2  - pause/un-pause playback" << endl;
  cout << "3  - next track" << endl;
  cout << "4  - previous track" << endl;
}  

int main (int argc, char **argv)
{
//! [Interesting]
  // Instantiate a WT5001 serial MP3 player on uart 0 (/dev/ttyS0).  This
  // works for the galileo G2.  

  // The Edison uses a different serial port, /dev/ttyMFD1, so if you
  // are using this example on an Edison board, set the environment
  // variable WT5001_SERIAL_PORT to specify the proper port before
  // running this example, 
  // eg: 'WT5001_SERIAL_PORT=/dev/ttyMFD1 ./wt5001-example'

  // This example was tested on the Grove Serial MP3 module.

  const char *defaultPort = "/dev/ttyS0";
  char *port = getenv("WT5001_SERIAL_PORT");

  if (port)
    defaultPort = port;

  upm::WT5001* mp3 = new upm::WT5001(0, defaultPort);
  
  int cmd = -1;
  if (argc > 1)
    cmd = atoi(argv[1]);
  
  // make sure port is initialized properly.  9600 baud is the default.
  if (!mp3->setupTty(B9600))
    {
      cerr << "Failed to setup tty port parameters" << endl;
      return 1;
    }
  
  switch (cmd)
    {
    case 0:
      mp3->stop();
      break;
   
    case 1:
      mp3->play(upm::WT5001::SD, 1);
      break;
   
    case 2:
      mp3->pause();
      break;
   
    case 3:
      mp3->next();
      break;
   
    case 4:
      mp3->previous();
      break;

    default:
      // nothing, just output usage, and info below
      printUsage(argv[0]);
      break;
    }   

  // Example: set the date
  // mp3->setDate(2015, 1, 1);

  // Example: set the time
  // mp3->setTime(12, 30, 30);

  // print out some information
  uint8_t vol = 0;
  if (mp3->getVolume(&vol))
    cout << "The current volume is: " << int(vol) << endl;

  uint8_t ps = 0;
  if (mp3->getPlayState(&ps))
    cout << "The current play state is: " << int(ps) << endl;

  uint16_t numf = 0;
  if (mp3->getNumFiles(upm::WT5001::SD, &numf))
    cout << "The number of files on the SD card is: " << int(numf) << endl;

  uint16_t curf = 0;
  if (mp3->getCurrentFile(&curf))
    cout << "The current file is: " << int(curf) << endl;

  uint16_t year = 0;
  uint8_t month = 0, day = 0;
  if (mp3->getDate(&year, &month, &day))
    cout << "The device date is: " << int(month) << "/" << int(day) 
         << "/" << int(year) << endl;

  uint8_t hour = 0, minute = 0, second = 0;
  if (mp3->getTime(&hour, &minute, &second))
    cout << "The device time is: " << int(hour) << ":" << int(minute) 
         << ":" << int(second) << endl;

//! [Interesting]

  cout << "Exiting..." << endl;

  delete mp3;
  return 0;
}