From 682bd4abcb9e97c3ef96b68aa8b179fef4f043d3 Mon Sep 17 00:00:00 2001 From: Max Date: Fri, 22 Dec 2017 20:15:47 -0500 Subject: [PATCH] crc16.h --- op25/gr-op25_repeater/lib/crc16.h | 35 +++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 op25/gr-op25_repeater/lib/crc16.h diff --git a/op25/gr-op25_repeater/lib/crc16.h b/op25/gr-op25_repeater/lib/crc16.h new file mode 100644 index 0000000..77f9dd6 --- /dev/null +++ b/op25/gr-op25_repeater/lib/crc16.h @@ -0,0 +1,35 @@ +/* + * This file is part of OP25 + * + * This is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3, or (at your option) + * any later version. + * + * This software 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 software; see the file COPYING. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, + * Boston, MA 02110-1301, USA. + */ + +#ifndef INCLUDED_CRC16_H +#define INCLUDED_CRC16_H + +static inline uint16_t crc16(const uint8_t buf[], int len) { + uint32_t poly = (1<<12) + (1<<5) + (1<<0); + uint32_t crc = 0; + for(int i=0; i