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ring_buffer.c

/* Copyright (C) 2007 B.A.T.M.A.N. contributors:
 * Marek Lindner
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA
 *
 */



#include "ring_buffer.h"



void ring_buffer_set(uint8_t tq_recv[], uint8_t *tq_index, uint8_t value)
{
      tq_recv[*tq_index] = value;
      *tq_index = (*tq_index + 1) % global_win_size;
}

uint8_t ring_buffer_avg(uint8_t tq_recv[])
{
      uint8_t *ptr;
      uint16_t count = 0, i = 0;
      uint32_t sum = 0;

      ptr = tq_recv;

      while (i < global_win_size) {

            if (*ptr != 0) {
                  count++;
                  sum += *ptr;
            }

            i++;
            ptr++;

      }

      if (count == 0)
            return 0;

      return (uint8_t)(sum / count);
}

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