src/main/inc/simpleGPIO.h

   1 /* FreeEMS - the open source engine management system
   2  *
   3  * Copyright 2012 Fred Cooke
   4  *
   5  * This file is part of the FreeEMS project.
   6  *
   7  * FreeEMS software is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * FreeEMS software is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with any FreeEMS software.  If not, see http://www.gnu.org/licenses/
  19  *
  20  * We ask that if you make any changes to this file you email them upstream to
  21  * us at admin(at)diyefi(dot)org or, even better, fork the code on github.com!
  22  *
  23  * Thank you for choosing FreeEMS to run your engine!
  24  */
  25
  26
  27 /** @file
  28  *
  29  * Declarations for simpleGPIO.c implementations.
  30  * To add a file to the project :
  31  * - Change all 4 hash defines to the filename uppercased and underscored
  32  */
  33
  34
  35 /* Header file multiple inclusion protection courtesy eclipse Header Template */
  36 /* and http://gcc.gnu.org/onlinedocs/gcc-3.1.1/cpp/ C pre processor manual    */
  37 #ifndef FILE_SIMPLE_GPIO_H_SEEN
  38 #define FILE_SIMPLE_GPIO_H_SEEN
  39
  40
  41 #ifdef EXTERN
  42 #warning "EXTERN already defined by another header, please sort it out!"
  43 #undef EXTERN /* If fail on warning is off, remove the definition such that we can redefine correctly. */
  44 #endif
  45
  46 #ifdef SIMPLE_GPIO_C
  47 #define EXTERN
  48 #else
  49 #define EXTERN extern
  50 #endif
  51
  52
  53 EXTERN void performSimpleGPIO(void) FPAGE_FE;
  54
  55
  56 #undef EXTERN
  57
  58 #else
  59         /* let us know if we are being untidy with headers */
  60         #warning "Header file SIMPLE_GPIO_H seen before, sort it out!"
  61 /* end of the wrapper ifdef from the very top */
  62 #endif