Lancaster University / mbed-src

Lancaster University's (short term!) clone of mbed-src for micro:bit. This is a copy of the github branch https://github.com/lancaster-university/mbed-classic

Fork of mbed-src by mbed official

targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/TARGET_MCU_K64F/TARGET_FRDM/crc.h@584:7c5a5136e412, 2015-07-08 (annotated)

Committer:
mbed_official
Date:
Wed Jul 08 07:45:08 2015 +0100
Revision:
584:7c5a5136e412
Synchronized with git revision a15892332f7dfbf7685582956fd7fa377aaddb51



Full URL: https://github.com/mbedmicro/mbed/commit/a15892332f7dfbf7685582956fd7fa377aaddb51/



Update mbed_overrides.c

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 584:7c5a5136e412 1 /**********************************************************************
mbed_official 584:7c5a5136e412 2 *
mbed_official 584:7c5a5136e412 3 * Filename: crc.h
mbed_official 584:7c5a5136e412 4 *
mbed_official 584:7c5a5136e412 5 * Description: A header file describing the various CRC standards.
mbed_official 584:7c5a5136e412 6 *
mbed_official 584:7c5a5136e412 7 * Notes:
mbed_official 584:7c5a5136e412 8 *
mbed_official 584:7c5a5136e412 9 *
mbed_official 584:7c5a5136e412 10 * Copyright (c) 2000 by Michael Barr. This software is placed into
mbed_official 584:7c5a5136e412 11 * the public domain and may be used for any purpose. However, this
mbed_official 584:7c5a5136e412 12 * notice must not be changed or removed and no warranty is either
mbed_official 584:7c5a5136e412 13 * expressed or implied by its publication or distribution.
mbed_official 584:7c5a5136e412 14 **********************************************************************/
mbed_official 584:7c5a5136e412 15
mbed_official 584:7c5a5136e412 16 #ifndef _crc_h
mbed_official 584:7c5a5136e412 17 #define _crc_h
mbed_official 584:7c5a5136e412 18
mbed_official 584:7c5a5136e412 19
mbed_official 584:7c5a5136e412 20 #define FALSE 0
mbed_official 584:7c5a5136e412 21 #define TRUE !FALSE
mbed_official 584:7c5a5136e412 22
mbed_official 584:7c5a5136e412 23 /*
mbed_official 584:7c5a5136e412 24 * Select the CRC standard from the list that follows.
mbed_official 584:7c5a5136e412 25 */
mbed_official 584:7c5a5136e412 26 #define CRC16
mbed_official 584:7c5a5136e412 27
mbed_official 584:7c5a5136e412 28
mbed_official 584:7c5a5136e412 29 #if defined(CRC_CCITT)
mbed_official 584:7c5a5136e412 30
mbed_official 584:7c5a5136e412 31 typedef unsigned short crc;
mbed_official 584:7c5a5136e412 32
mbed_official 584:7c5a5136e412 33 #define CRC_NAME "CRC-CCITT"
mbed_official 584:7c5a5136e412 34 #define POLYNOMIAL 0x1021
mbed_official 584:7c5a5136e412 35 #define INITIAL_REMAINDER 0xFFFF
mbed_official 584:7c5a5136e412 36 #define FINAL_XOR_VALUE 0x0000
mbed_official 584:7c5a5136e412 37 #define REFLECT_DATA FALSE
mbed_official 584:7c5a5136e412 38 #define REFLECT_REMAINDER FALSE
mbed_official 584:7c5a5136e412 39 #define CHECK_VALUE 0x29B1
mbed_official 584:7c5a5136e412 40
mbed_official 584:7c5a5136e412 41 #elif defined(CRC16)
mbed_official 584:7c5a5136e412 42
mbed_official 584:7c5a5136e412 43 typedef unsigned short crc;
mbed_official 584:7c5a5136e412 44
mbed_official 584:7c5a5136e412 45 #define CRC_NAME "CRC-16"
mbed_official 584:7c5a5136e412 46 #define POLYNOMIAL 0x8005
mbed_official 584:7c5a5136e412 47 #define INITIAL_REMAINDER 0x0000
mbed_official 584:7c5a5136e412 48 #define FINAL_XOR_VALUE 0x0000
mbed_official 584:7c5a5136e412 49 #define REFLECT_DATA TRUE
mbed_official 584:7c5a5136e412 50 #define REFLECT_REMAINDER TRUE
mbed_official 584:7c5a5136e412 51 #define CHECK_VALUE 0xBB3D
mbed_official 584:7c5a5136e412 52
mbed_official 584:7c5a5136e412 53 #elif defined(CRC32)
mbed_official 584:7c5a5136e412 54
mbed_official 584:7c5a5136e412 55 typedef unsigned long crc;
mbed_official 584:7c5a5136e412 56
mbed_official 584:7c5a5136e412 57 #define CRC_NAME "CRC-32"
mbed_official 584:7c5a5136e412 58 #define POLYNOMIAL 0x04C11DB7
mbed_official 584:7c5a5136e412 59 #define INITIAL_REMAINDER 0xFFFFFFFF
mbed_official 584:7c5a5136e412 60 #define FINAL_XOR_VALUE 0xFFFFFFFF
mbed_official 584:7c5a5136e412 61 #define REFLECT_DATA TRUE
mbed_official 584:7c5a5136e412 62 #define REFLECT_REMAINDER TRUE
mbed_official 584:7c5a5136e412 63 #define CHECK_VALUE 0xCBF43926
mbed_official 584:7c5a5136e412 64
mbed_official 584:7c5a5136e412 65 #else
mbed_official 584:7c5a5136e412 66
mbed_official 584:7c5a5136e412 67 #error "One of CRC_CCITT, CRC16, or CRC32 must be #define'd."
mbed_official 584:7c5a5136e412 68
mbed_official 584:7c5a5136e412 69 #endif
mbed_official 584:7c5a5136e412 70
mbed_official 584:7c5a5136e412 71
mbed_official 584:7c5a5136e412 72 void crcInit(void);
mbed_official 584:7c5a5136e412 73 crc crcSlow(unsigned char const message[], int nBytes);
mbed_official 584:7c5a5136e412 74 crc crcFast(unsigned char const message[], int nBytes);
mbed_official 584:7c5a5136e412 75
mbed_official 584:7c5a5136e412 76
mbed_official 584:7c5a5136e412 77 #endif /* _crc_h */