git.zerfleddert.de Git - fnordlicht-mini/blob - firmware/fnordlicht-controller/fifo.h

   1 /* vim:ts=4 sts=4 et tw=80
   2  *
   3  *         fnordlicht firmware
   4  *
   5  *    for additional information please
   6  *    see http://lochraster.org/fnordlichtmini
   7  *
   8  * (c) by Alexander Neumann <alexander@bumpern.de>
   9  *     Lars Noschinski <lars@public.noschinski.de>
  10  *
  11  * This program is free software: you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License version 3 as published by
  13  * the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but WITHOUT
  16  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  18  * more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along with
  21  * this program.  If not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24 #ifndef __FIFO_H
  25 #define __FIFO_H
  26
  27 #include <stdint.h>
  28 #include <stdbool.h>
  29 #include "globals.h"
  30
  31 typedef uint8_t fifo_content_t;
  32 typedef uint8_t fifo_size_t;
  33
  34 typedef struct
  35 {
  36     fifo_size_t read;
  37     fifo_size_t write;
  38     fifo_content_t buffer[CONFIG_FIFO_SIZE];
  39 } fifo_t;
  40
  41 void fifo_init(fifo_t *f);
  42 void fifo_enqueue(fifo_t *f, fifo_content_t data);
  43 fifo_content_t fifo_dequeue(fifo_t *f);
  44 fifo_size_t fifo_fill(fifo_t *f);
  45 bool fifo_empty(fifo_t *f);
  46 bool fifo_full(fifo_t *f);
  47
  48 #endif