diff options
author | Gregory Nutt <gnutt@nuttx.org> | 2013-07-07 17:35:35 -0600 |
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committer | Gregory Nutt <gnutt@nuttx.org> | 2013-07-07 17:35:35 -0600 |
commit | ffcf112bf7e2cd4060b5370ce7c77b2d6bc07f71 (patch) | |
tree | eb2816b1b6b92986acabdbf7a351052c1fb01652 /nuttx/include | |
parent | e927c4f60b380ef1cb16626b1a2e6ecb60fca05a (diff) | |
download | px4-nuttx-ffcf112bf7e2cd4060b5370ce7c77b2d6bc07f71.tar.gz px4-nuttx-ffcf112bf7e2cd4060b5370ce7c77b2d6bc07f71.tar.bz2 px4-nuttx-ffcf112bf7e2cd4060b5370ce7c77b2d6bc07f71.zip |
Add CRC16 support
Diffstat (limited to 'nuttx/include')
-rw-r--r-- | nuttx/include/crc16.h | 83 | ||||
-rw-r--r-- | nuttx/include/crc32.h | 10 |
2 files changed, 88 insertions, 5 deletions
diff --git a/nuttx/include/crc16.h b/nuttx/include/crc16.h new file mode 100644 index 000000000..eee38567a --- /dev/null +++ b/nuttx/include/crc16.h @@ -0,0 +1,83 @@ +/**************************************************************************** + * include/crc16.h + * + * Copyright (C) 2013 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +#ifndef __INCLUDE_CRC16_H +#define __INCLUDE_CRC16_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <sys/types.h> +#include <stdint.h> + +/**************************************************************************** + * Public Function Prototypes + ****************************************************************************/ + +#ifdef __cplusplus +#define EXTERN extern "C" +extern "C" +{ +#else +#define EXTERN extern +#endif + +/**************************************************************************** + * Name: crc16part + * + * Description: + * Continue CRC calculation on a part of the buffer. + * + ****************************************************************************/ + +uint16_t crc16part(FAR const uint8_t *src, size_t len, uint16_t crc16val); + +/**************************************************************************** + * Name: crc16 + * + * Description: + * Return a 16-bit CRC of the contents of the 'src' buffer, length 'len' + * + ****************************************************************************/ + +uint16_t crc16(FAR const uint8_t *src, size_t len); + +#undef EXTERN +#ifdef __cplusplus +} +#endif + +#endif /* __INCLUDE_CRC16_H */ diff --git a/nuttx/include/crc32.h b/nuttx/include/crc32.h index 1dd6fff13..1a6c97da0 100644 --- a/nuttx/include/crc32.h +++ b/nuttx/include/crc32.h @@ -1,5 +1,5 @@ /**************************************************************************** - * include/crc.h + * include/crc32.h * * Copyright (C) 2010 Gregory Nutt. All rights reserved. * Author: Gregory Nutt <gnutt@nuttx.org> @@ -49,7 +49,8 @@ #ifdef __cplusplus #define EXTERN extern "C" -extern "C" { +extern "C" +{ #else #define EXTERN extern #endif @@ -62,8 +63,7 @@ extern "C" { * ****************************************************************************/ -EXTERN uint32_t crc32part(FAR const uint8_t *src, size_t len, - uint32_t crc32val); +uint32_t crc32part(FAR const uint8_t *src, size_t len, uint32_t crc32val); /**************************************************************************** * Name: crc32 @@ -73,7 +73,7 @@ EXTERN uint32_t crc32part(FAR const uint8_t *src, size_t len, * ****************************************************************************/ -EXTERN uint32_t crc32(FAR const uint8_t *src, size_t len); +uint32_t crc32(FAR const uint8_t *src, size_t len); #undef EXTERN #ifdef __cplusplus |