Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 1 | /* |
Sven Eckelmann | 567db7b | 2012-01-01 00:41:38 +0100 | [diff] [blame] | 2 | * Copyright (C) 2007-2012 B.A.T.M.A.N. contributors: |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 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 | |
| 25 | void 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 | |
Sven Eckelmann | 747e422 | 2011-05-14 23:14:50 +0200 | [diff] [blame] | 31 | uint8_t ring_buffer_avg(const uint8_t lq_recv[]) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 32 | { |
Sven Eckelmann | 747e422 | 2011-05-14 23:14:50 +0200 | [diff] [blame] | 33 | const uint8_t *ptr; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 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 | } |