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/*
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 * blink12.c:
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 *        Simple sequence over the first 12 GPIO pins - LEDs
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 *        Aimed at the Gertboard, but it's fairly generic.
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 *
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 * Copyright (c) 2012-2013 Gordon Henderson. <projects@drogon.net>
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 ***********************************************************************
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 * This file is part of wiringPi:
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 *        https://projects.drogon.net/raspberry-pi/wiringpi/
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 *
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 *    wiringPi is free software: you can redistribute it and/or modify
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 *    it under the terms of the GNU Lesser General Public License as published by
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 *    the Free Software Foundation, either version 3 of the License, or
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 *    (at your option) any later version.
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 *
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 *    wiringPi is distributed in the hope that it will be useful,
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 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *    GNU Lesser General Public License for more details.
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 *
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 *    You should have received a copy of the GNU Lesser General Public License
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 *    along with wiringPi.  If not, see <http://www.gnu.org/licenses/>.
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 ***********************************************************************
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 */
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#include <stdio.h>
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#include <wiringPi.h>
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// Simple sequencer data
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//        Triplets of LED, On/Off and delay
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int data [] =
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{
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            0, 1, 1,
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            1, 1, 1,
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  0, 0, 0,  2, 1, 1,
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  1, 0, 0,  3, 1, 1,
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  2, 0, 0,  4, 1, 1,
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  3, 0, 0,  5, 1, 1,
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  4, 0, 0,  6, 1, 1,
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  5, 0, 0,  7, 1, 1,
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  6, 0, 0, 11, 1, 1,
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  7, 0, 0, 10, 1, 1,
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 11, 0, 0, 13, 1, 1,
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 10, 0, 0, 12, 1, 1,
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 13, 0, 1,
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 12, 0, 1,
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  0, 0, 1,        // Extra delay
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// Back again
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           12, 1, 1,
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           13, 1, 1,
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 12, 0, 0, 10, 1, 1,
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 13, 0, 0, 11, 1, 1,
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 10, 0, 0,  7, 1, 1,
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 11, 0, 0,  6, 1, 1,
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  7, 0, 0,  5, 1, 1,
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  6, 0, 0,  4, 1, 1,
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  5, 0, 0,  3, 1, 1,
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  4, 0, 0,  2, 1, 1,
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  3, 0, 0,  1, 1, 1,
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  2, 0, 0,  0, 1, 1,
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  1, 0, 1,
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  0, 0, 1,
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  0, 0, 1,        // Extra delay
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  0, 9, 0,        // End marker
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} ;
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int main (void)
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{
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  int pin ;
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  int dataPtr ;
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  int l, s, d ;
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  printf ("Raspberry Pi - 12-LED Sequence\n") ;
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  printf ("==============================\n") ;
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  printf ("\n") ;
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  printf ("Connect LEDs up to the first 8 GPIO pins, then pins 11, 10, 13, 12 in\n") ;
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  printf ("    that order, then sit back and watch the show!\n") ;
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  wiringPiSetup () ;
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  for (pin = 0 ; pin < 14 ; ++pin)
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    pinMode (pin, OUTPUT) ;
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  dataPtr = 0 ;
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  for (;;)
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  {
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    l = data [dataPtr++] ;        // LED
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    s = data [dataPtr++] ;        // State
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    d = data [dataPtr++] ;        // Duration (10ths)
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    if (s == 9)                        // 9 -> End Marker
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    {
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      dataPtr = 0 ;
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      continue ;
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    }
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    digitalWrite (l, s) ;
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    delay        (d * 100) ;
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  }
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  return 0 ;
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}