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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 428 | killagreg | 1 | #include "crc16.h" |
| 2 | #include <avr/pgmspace.h> |
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| 3 | |||
| 4 | const uint16_t crc16tab[256] PROGMEM = |
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| 5 | { |
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| 6 | 0x0000,0x1021,0x2042,0x3063,0x4084,0x50a5,0x60c6,0x70e7, |
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| 7 | 0x8108,0x9129,0xa14a,0xb16b,0xc18c,0xd1ad,0xe1ce,0xf1ef, |
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| 8 | 0x1231,0x0210,0x3273,0x2252,0x52b5,0x4294,0x72f7,0x62d6, |
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| 9 | 0x9339,0x8318,0xb37b,0xa35a,0xd3bd,0xc39c,0xf3ff,0xe3de, |
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| 10 | 0x2462,0x3443,0x0420,0x1401,0x64e6,0x74c7,0x44a4,0x5485, |
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| 11 | 0xa56a,0xb54b,0x8528,0x9509,0xe5ee,0xf5cf,0xc5ac,0xd58d, |
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| 12 | 0x3653,0x2672,0x1611,0x0630,0x76d7,0x66f6,0x5695,0x46b4, |
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| 13 | 0xb75b,0xa77a,0x9719,0x8738,0xf7df,0xe7fe,0xd79d,0xc7bc, |
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| 14 | 0x48c4,0x58e5,0x6886,0x78a7,0x0840,0x1861,0x2802,0x3823, |
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| 15 | 0xc9cc,0xd9ed,0xe98e,0xf9af,0x8948,0x9969,0xa90a,0xb92b, |
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| 16 | 0x5af5,0x4ad4,0x7ab7,0x6a96,0x1a71,0x0a50,0x3a33,0x2a12, |
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| 17 | 0xdbfd,0xcbdc,0xfbbf,0xeb9e,0x9b79,0x8b58,0xbb3b,0xab1a, |
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| 18 | 0x6ca6,0x7c87,0x4ce4,0x5cc5,0x2c22,0x3c03,0x0c60,0x1c41, |
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| 19 | 0xedae,0xfd8f,0xcdec,0xddcd,0xad2a,0xbd0b,0x8d68,0x9d49, |
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| 20 | 0x7e97,0x6eb6,0x5ed5,0x4ef4,0x3e13,0x2e32,0x1e51,0x0e70, |
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| 21 | 0xff9f,0xefbe,0xdfdd,0xcffc,0xbf1b,0xaf3a,0x9f59,0x8f78, |
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| 22 | 0x9188,0x81a9,0xb1ca,0xa1eb,0xd10c,0xc12d,0xf14e,0xe16f, |
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| 23 | 0x1080,0x00a1,0x30c2,0x20e3,0x5004,0x4025,0x7046,0x6067, |
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| 24 | 0x83b9,0x9398,0xa3fb,0xb3da,0xc33d,0xd31c,0xe37f,0xf35e, |
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| 25 | 0x02b1,0x1290,0x22f3,0x32d2,0x4235,0x5214,0x6277,0x7256, |
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| 26 | 0xb5ea,0xa5cb,0x95a8,0x8589,0xf56e,0xe54f,0xd52c,0xc50d, |
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| 27 | 0x34e2,0x24c3,0x14a0,0x0481,0x7466,0x6447,0x5424,0x4405, |
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| 28 | 0xa7db,0xb7fa,0x8799,0x97b8,0xe75f,0xf77e,0xc71d,0xd73c, |
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| 29 | 0x26d3,0x36f2,0x0691,0x16b0,0x6657,0x7676,0x4615,0x5634, |
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| 30 | 0xd94c,0xc96d,0xf90e,0xe92f,0x99c8,0x89e9,0xb98a,0xa9ab, |
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| 31 | 0x5844,0x4865,0x7806,0x6827,0x18c0,0x08e1,0x3882,0x28a3, |
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| 32 | 0xcb7d,0xdb5c,0xeb3f,0xfb1e,0x8bf9,0x9bd8,0xabbb,0xbb9a, |
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| 33 | 0x4a75,0x5a54,0x6a37,0x7a16,0x0af1,0x1ad0,0x2ab3,0x3a92, |
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| 34 | 0xfd2e,0xed0f,0xdd6c,0xcd4d,0xbdaa,0xad8b,0x9de8,0x8dc9, |
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| 35 | 0x7c26,0x6c07,0x5c64,0x4c45,0x3ca2,0x2c83,0x1ce0,0x0cc1, |
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| 36 | 0xef1f,0xff3e,0xcf5d,0xdf7c,0xaf9b,0xbfba,0x8fd9,0x9ff8, |
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| 37 | 0x6e17,0x7e36,0x4e55,0x5e74,0x2e93,0x3eb2,0x0ed1,0x1ef0 |
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| 38 | }; |
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| 39 | |||
| 40 | uint16_t CRC16(const uint8_t *pBuffer, uint32_t len) |
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| 41 | { |
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| 42 | uint32_t counter; |
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| 43 | uint16_t crc = 0; |
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| 44 | for( counter = 0; counter < len; counter++) |
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| 45 | crc = (crc<<8) ^ crc16tab[((crc>>8) ^ *pBuffer++)&0x00FF]; |
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| 46 | return crc; |
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| 47 | } |
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| 48 |