1/* 2 * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: 3 * 4 * Marek Lindner 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of version 2 of the GNU General Public 8 * License as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 18 * 02110-1301, USA 19 * 20 */ 21 22#include "main.h" 23#include "ring_buffer.h" 24 25void ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index, uint8_t value) 26{ 27 lq_recv[*lq_index] = value; 28 *lq_index = (*lq_index + 1) % TQ_GLOBAL_WINDOW_SIZE; 29} 30 31uint8_t ring_buffer_avg(uint8_t lq_recv[]) 32{ 33 uint8_t *ptr; 34 uint16_t count = 0, i = 0, sum = 0; 35 36 ptr = lq_recv; 37 38 while (i < TQ_GLOBAL_WINDOW_SIZE) { 39 if (*ptr != 0) { 40 count++; 41 sum += *ptr; 42 } 43 44 i++; 45 ptr++; 46 } 47 48 if (count == 0) 49 return 0; 50 51 return (uint8_t)(sum / count); 52} 53