Bluetooth Low Energy for Smart Plug
Dependencies: BLE_API mbed nRF51822
Fork of SmartPlugBLE by
crc8.c@3:aaa92c61931a, 2015-07-13 (annotated)
- Committer:
- Slepnir
- Date:
- Mon Jul 13 13:14:34 2015 +0000
- Revision:
- 3:aaa92c61931a
SPCommunication class Added
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Slepnir | 3:aaa92c61931a | 1 | //================ File Despciption =========================================// |
Slepnir | 3:aaa92c61931a | 2 | //=== File name : crc8.c |
Slepnir | 3:aaa92c61931a | 3 | //=== |
Slepnir | 3:aaa92c61931a | 4 | //#include "crc8.h" |
Slepnir | 3:aaa92c61931a | 5 | //===========================================================================// |
Slepnir | 3:aaa92c61931a | 6 | |
Slepnir | 3:aaa92c61931a | 7 | //================ Index ====================================================// |
Slepnir | 3:aaa92c61931a | 8 | // |
Slepnir | 3:aaa92c61931a | 9 | //================ Include Header ===========================================// |
Slepnir | 3:aaa92c61931a | 10 | // |
Slepnir | 3:aaa92c61931a | 11 | //================ PUBLIC METHOD ============================================// |
Slepnir | 3:aaa92c61931a | 12 | // extern function from another file |
Slepnir | 3:aaa92c61931a | 13 | // |
Slepnir | 3:aaa92c61931a | 14 | //================ PRIVATE METHOD ===========================================// |
Slepnir | 3:aaa92c61931a | 15 | // non extern function |
Slepnir | 3:aaa92c61931a | 16 | // |
Slepnir | 3:aaa92c61931a | 17 | //================ PUBLIC DATA ==============================================// |
Slepnir | 3:aaa92c61931a | 18 | // extern data |
Slepnir | 3:aaa92c61931a | 19 | // |
Slepnir | 3:aaa92c61931a | 20 | //================ PRIVATE DATA =============================================// |
Slepnir | 3:aaa92c61931a | 21 | // non extern data |
Slepnir | 3:aaa92c61931a | 22 | // |
Slepnir | 3:aaa92c61931a | 23 | //================ PRIVATE DEFINE ===========================================// |
Slepnir | 3:aaa92c61931a | 24 | // |
Slepnir | 3:aaa92c61931a | 25 | //================ PRIVATE MACRO ============================================// |
Slepnir | 3:aaa92c61931a | 26 | // |
Slepnir | 3:aaa92c61931a | 27 | //================ SOURCE CODE ==============================================// |
Slepnir | 3:aaa92c61931a | 28 | // |
Slepnir | 3:aaa92c61931a | 29 | //This procedure calculates the cumulative Dallas Semiconductor |
Slepnir | 3:aaa92c61931a | 30 | // 1-Wire CRC of all bytes passed to it. The result |
Slepnir | 3:aaa92c61931a | 31 | //accumulates in the global variable CRC. |
Slepnir | 3:aaa92c61931a | 32 | const unsigned char crc8_table[256]={ |
Slepnir | 3:aaa92c61931a | 33 | 0x00,0x07,0x0E,0x09,0x1C,0x1B,0x12,0x15,0x38,0x3F,0x36,0x31,0x24,0x23,0x2A,0x2D, |
Slepnir | 3:aaa92c61931a | 34 | 0x70,0x77,0x7E,0x79,0x6C,0x6B,0x62,0x65,0x48,0x4F,0x46,0x41,0x54,0x53,0x5A,0x5D, |
Slepnir | 3:aaa92c61931a | 35 | 0xE0,0xE7,0xEE,0xE9,0xFC,0xFB,0xF2,0xF5,0xD8,0xDF,0xD6,0xD1,0xC4,0xC3,0xCA,0xCB, |
Slepnir | 3:aaa92c61931a | 36 | 0x90,0x97,0x9E,0x99,0x8C,0x8B,0x82,0x85,0xA8,0xAF,0xA6,0xA1,0xB4,0xB3,0xBA,0xBD, |
Slepnir | 3:aaa92c61931a | 37 | 0xC7,0xC0,0xC9,0xCE,0xDB,0xDC,0xD5,0xD2,0xFF,0xF8,0xF1,0xF6,0xE3,0xE4,0xED,0xEA, |
Slepnir | 3:aaa92c61931a | 38 | 0xB7,0xB0,0xB9,0xBE,0xAB,0xAC,0xA5,0xA2,0x8F,0x88,0x81,0x86,0x93,0x94,0x9D,0x9A, |
Slepnir | 3:aaa92c61931a | 39 | 0x27,0x20,0x29,0x2E,0x3B,0x3C,0x35,0x32,0x1F,0x18,0x11,0x16,0x03,0x04,0x0D,0x0A, |
Slepnir | 3:aaa92c61931a | 40 | 0x57,0x50,0x59,0x5E,0x4B,0x4C,0x45,0x42,0x6F,0x68,0x61,0x66,0x73,0x74,0x7D,0x7A, |
Slepnir | 3:aaa92c61931a | 41 | 0x89,0x8E,0x87,0x80,0x95,0x92,0x9B,0x9C,0xB1,0xB6,0xBF,0xB8,0xAD,0xAA,0xA3,0xA4, |
Slepnir | 3:aaa92c61931a | 42 | 0xF9,0xFE,0xF7,0xF0,0xE5,0xE2,0xEB,0xEC,0xC1,0xC6,0xCF,0xC8,0xDD,0xDA,0xD3,0xD4, |
Slepnir | 3:aaa92c61931a | 43 | 0x69,0x6E,0x67,0x60,0x75,0x72,0x7B,0x7C,0x51,0x56,0x5F,0x58,0x4D,0x4A,0x43,0x44, |
Slepnir | 3:aaa92c61931a | 44 | 0x19,0x1E,0x17,0x10,0x05,0x02,0x0B,0x0C,0x21,0x26,0x2F,0x28,0x3D,0x3A,0x33,0x34, |
Slepnir | 3:aaa92c61931a | 45 | 0x4E,0x49,0x40,0x47,0x52,0x55,0x5C,0x5B,0x76,0x71,0x78,0x7F,0x6A,0x6D,0x64,0x63, |
Slepnir | 3:aaa92c61931a | 46 | 0x3E,0x39,0x30,0x37,0x22,0x25,0x2C,0x2B,0x06,0x01,0x08,0x0F,0x1A,0x1D,0x14,0x13, |
Slepnir | 3:aaa92c61931a | 47 | 0xAE,0xA9,0xA0,0xA7,0xB2,0xB5,0xBC,0xBB,0x96,0x91,0x98,0x9F,0x8A,0x8D,0x84,0x83, |
Slepnir | 3:aaa92c61931a | 48 | 0xDE,0xD9,0xD0,0xD7,0xC2,0xC5,0xCC,0xCB,0xE6,0xE1,0xE8,0xEF,0xFA,0xFD,0xF4,0xF3 |
Slepnir | 3:aaa92c61931a | 49 | |
Slepnir | 3:aaa92c61931a | 50 | }; |
Slepnir | 3:aaa92c61931a | 51 | |
Slepnir | 3:aaa92c61931a | 52 | |
Slepnir | 3:aaa92c61931a | 53 | inline unsigned char crc8Compute(unsigned char *p,unsigned char length) |
Slepnir | 3:aaa92c61931a | 54 | { |
Slepnir | 3:aaa92c61931a | 55 | unsigned char crc8; |
Slepnir | 3:aaa92c61931a | 56 | unsigned char i; |
Slepnir | 3:aaa92c61931a | 57 | unsigned char offset; |
Slepnir | 3:aaa92c61931a | 58 | |
Slepnir | 3:aaa92c61931a | 59 | crc8 = 0; |
Slepnir | 3:aaa92c61931a | 60 | for(i = 0; i < length; i++) |
Slepnir | 3:aaa92c61931a | 61 | { |
Slepnir | 3:aaa92c61931a | 62 | offset = crc8 ^ *(p + i); |
Slepnir | 3:aaa92c61931a | 63 | crc8 = crc8_table[offset]; |
Slepnir | 3:aaa92c61931a | 64 | } |
Slepnir | 3:aaa92c61931a | 65 | return crc8; |
Slepnir | 3:aaa92c61931a | 66 | //return crc8 ^ 0x55; |
Slepnir | 3:aaa92c61931a | 67 | } |
Slepnir | 3:aaa92c61931a | 68 | /* |
Slepnir | 3:aaa92c61931a | 69 | * Function: Do_CRC8 |
Slepnir | 3:aaa92c61931a | 70 | * * Description: |
Slepnir | 3:aaa92c61931a | 71 | * Computes the CRC value given the byte and the old CRC value as a static value |
Slepnir | 3:aaa92c61931a | 72 | * |
Slepnir | 3:aaa92c61931a | 73 | * Return Value: CRC value |
Slepnir | 3:aaa92c61931a | 74 | * Parameters: Input data byte to be CRC'ed |
Slepnir | 3:aaa92c61931a | 75 | * Remarks: |
Slepnir | 3:aaa92c61931a | 76 | * uses a table driven method to speed things up. |
Slepnir | 3:aaa92c61931a | 77 | * |
Slepnir | 3:aaa92c61931a | 78 | * */ |
Slepnir | 3:aaa92c61931a | 79 | inline unsigned char crc8OneByte(unsigned char xx,unsigned char ucCRC) |
Slepnir | 3:aaa92c61931a | 80 | { |
Slepnir | 3:aaa92c61931a | 81 | ucCRC = crc8_table[ucCRC ^ xx]; |
Slepnir | 3:aaa92c61931a | 82 | |
Slepnir | 3:aaa92c61931a | 83 | return (ucCRC); |
Slepnir | 3:aaa92c61931a | 84 | } |
Slepnir | 3:aaa92c61931a | 85 | |
Slepnir | 3:aaa92c61931a | 86 | unsigned char Crc8(unsigned char* xx,const int size, unsigned char ucCRC) |
Slepnir | 3:aaa92c61931a | 87 | { |
Slepnir | 3:aaa92c61931a | 88 | |
Slepnir | 3:aaa92c61931a | 89 | int i; |
Slepnir | 3:aaa92c61931a | 90 | for(i=0; i<size; i++) |
Slepnir | 3:aaa92c61931a | 91 | { |
Slepnir | 3:aaa92c61931a | 92 | ucCRC=crc8OneByte(xx[i],ucCRC); |
Slepnir | 3:aaa92c61931a | 93 | } |
Slepnir | 3:aaa92c61931a | 94 | return ucCRC; |
Slepnir | 3:aaa92c61931a | 95 | } |
Slepnir | 3:aaa92c61931a | 96 | //================ END OF FILE ==============================================// |
Slepnir | 3:aaa92c61931a | 97 | // |
Slepnir | 3:aaa92c61931a | 98 | |
Slepnir | 3:aaa92c61931a | 99 |