implementation of parts of the unilynx protocol, for communicating with danfos photovoltaic inverters. Still BETA ! needs byte stuff/unstuff fixed, and some CRC are left out for niw...
crc.cpp@2:de090b60d543, 2012-09-04 (annotated)
- Committer:
- morten_opprud
- Date:
- Tue Sep 04 05:48:43 2012 +0000
- Revision:
- 2:de090b60d543
- Parent:
- 0:66a099b01e08
cleaned a bit before comitting, !NOTE! byte stuffing/unstuffing still needs wors, also CRC on incoming data is to be done
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
morten_opprud | 0:66a099b01e08 | 1 | /** |
morten_opprud | 0:66a099b01e08 | 2 | * <describing text> |
morten_opprud | 0:66a099b01e08 | 3 | * |
morten_opprud | 0:66a099b01e08 | 4 | * @file crc.c.c |
morten_opprud | 0:66a099b01e08 | 5 | * @ingroup <> |
morten_opprud | 0:66a099b01e08 | 6 | * |
morten_opprud | 0:66a099b01e08 | 7 | * @author MortenOJ |
morten_opprud | 0:66a099b01e08 | 8 | * @date Aug 25, 2012 |
morten_opprud | 0:66a099b01e08 | 9 | * |
morten_opprud | 0:66a099b01e08 | 10 | */ |
morten_opprud | 0:66a099b01e08 | 11 | #define PPPINITFCS16 0xFFFF /* Initial FCS value */ |
morten_opprud | 0:66a099b01e08 | 12 | #define PPPGOODFCS16 0xf0b8 /* Good final FCS value */ |
morten_opprud | 0:66a099b01e08 | 13 | |
morten_opprud | 0:66a099b01e08 | 14 | const unsigned short FCSTable[256] = |
morten_opprud | 0:66a099b01e08 | 15 | { 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, |
morten_opprud | 0:66a099b01e08 | 16 | 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, |
morten_opprud | 0:66a099b01e08 | 17 | 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, |
morten_opprud | 0:66a099b01e08 | 18 | 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, |
morten_opprud | 0:66a099b01e08 | 19 | 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, |
morten_opprud | 0:66a099b01e08 | 20 | 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, |
morten_opprud | 0:66a099b01e08 | 21 | 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, |
morten_opprud | 0:66a099b01e08 | 22 | 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, |
morten_opprud | 0:66a099b01e08 | 23 | 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, |
morten_opprud | 0:66a099b01e08 | 24 | 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, |
morten_opprud | 0:66a099b01e08 | 25 | 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, |
morten_opprud | 0:66a099b01e08 | 26 | 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, |
morten_opprud | 0:66a099b01e08 | 27 | 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, |
morten_opprud | 0:66a099b01e08 | 28 | 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, |
morten_opprud | 0:66a099b01e08 | 29 | 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, |
morten_opprud | 0:66a099b01e08 | 30 | 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, |
morten_opprud | 0:66a099b01e08 | 31 | 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, |
morten_opprud | 0:66a099b01e08 | 32 | 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, |
morten_opprud | 0:66a099b01e08 | 33 | 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, |
morten_opprud | 0:66a099b01e08 | 34 | 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, |
morten_opprud | 0:66a099b01e08 | 35 | 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, |
morten_opprud | 0:66a099b01e08 | 36 | 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, |
morten_opprud | 0:66a099b01e08 | 37 | 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, |
morten_opprud | 0:66a099b01e08 | 38 | 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, |
morten_opprud | 0:66a099b01e08 | 39 | 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, |
morten_opprud | 0:66a099b01e08 | 40 | 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, |
morten_opprud | 0:66a099b01e08 | 41 | 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, |
morten_opprud | 0:66a099b01e08 | 42 | 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, |
morten_opprud | 0:66a099b01e08 | 43 | 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, |
morten_opprud | 0:66a099b01e08 | 44 | 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, |
morten_opprud | 0:66a099b01e08 | 45 | 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, |
morten_opprud | 0:66a099b01e08 | 46 | 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 }; |
morten_opprud | 0:66a099b01e08 | 47 | |
morten_opprud | 0:66a099b01e08 | 48 | int pppfcs16(int fcs, char* pByte, int length) |
morten_opprud | 0:66a099b01e08 | 49 | { |
morten_opprud | 0:66a099b01e08 | 50 | while (length--) |
morten_opprud | 0:66a099b01e08 | 51 | fcs = (fcs >> 8) ^ FCSTable[(fcs ^ *pByte++) & 0xff]; |
morten_opprud | 0:66a099b01e08 | 52 | return (fcs); |
morten_opprud | 0:66a099b01e08 | 53 | } |