![]() |
![]() | #1 | |
Профессор Join Date: 01 2005 Location: Perm Age: 41
Posts: 2,142
Downloads: 0 Uploads: 0
Reputation: 0 | 0 | ![]()
Привет Вот строка: 0xFB0101F00101 А вот его CRC16: F6B6 Осталось угадать полином ![]() Сорс не могу посмотреть он в MCU. У меня следующая таблица для быстрого поиска Хотя тут скрипт. Code: def crc16(data): # global crc_h, crc_l crc_h = crc_l = 0 crc16htab = ( \ 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70, 0x81, 0x91, 0xa1, 0xb1, 0xc1, 0xd1, 0xe1, 0xf1, 0x12, 0x02, 0x32, 0x22, 0x52, 0x42, 0x72, 0x62, 0x93, 0x83, 0xb3, 0xa3, 0xd3, 0xc3, 0xf3, 0xe3, 0x24, 0x34, 0x04, 0x14, 0x64, 0x74, 0x44, 0x54, 0xa5, 0xb5, 0x85, 0x95, 0xe5, 0xf5, 0xc5, 0xd5, 0x36, 0x26, 0x16, 0x06, 0x76, 0x66, 0x56, 0x46, 0xb7, 0xa7, 0x97, 0x87, 0xf7, 0xe7, 0xd7, 0xc7, 0x48, 0x58, 0x68, 0x78, 0x08, 0x18, 0x28, 0x38, 0xc9, 0xd9, 0xe9, 0xf9, 0x89, 0x99, 0xa9, 0xb9, 0x5a, 0x4a, 0x7a, 0x6a, 0x1a, 0x0a, 0x3a, 0x2a, 0xdb, 0xcb, 0xfb, 0xeb, 0x9b, 0x8b, 0xbb, 0xab, 0x6c, 0x7c, 0x4c, 0x5c, 0x2c, 0x3c, 0x0c, 0x1c, 0xed, 0xfd, 0xcd, 0xdd, 0xad, 0xbd, 0x8d, 0x9d, 0x7e, 0x6e, 0x5e, 0x4e, 0x3e, 0x2e, 0x1e, 0x0e, 0xff, 0xef, 0xdf, 0xcf, 0xbf, 0xaf, 0x9f, 0x8f, 0x91, 0x81, 0xb1, 0xa1, 0xd1, 0xc1, 0xf1, 0xe1, 0x10, 0x00, 0x30, 0x20, 0x50, 0x40, 0x70, 0x60, 0x83, 0x93, 0xa3, 0xb3, 0xc3, 0xd3, 0xe3, 0xf3, 0x02, 0x12, 0x22, 0x32, 0x42, 0x52, 0x62, 0x72, 0xb5, 0xa5, 0x95, 0x85, 0xf5, 0xe5, 0xd5, 0xc5, 0x34, 0x24, 0x14, 0x04, 0x74, 0x64, 0x54, 0x44, 0xa7, 0xb7, 0x87, 0x97, 0xe7, 0xf7, 0xc7, 0xd7, 0x26, 0x36, 0x06, 0x16, 0x66, 0x76, 0x46, 0x56, 0xd9, 0xc9, 0xf9, 0xe9, 0x99, 0x89, 0xb9, 0xa9, 0x58, 0x48, 0x78, 0x68, 0x18, 0x08, 0x38, 0x28, 0xcb, 0xdb, 0xeb, 0xfb, 0x8b, 0x9b, 0xab, 0xbb, 0x4a, 0x5a, 0x6a, 0x7a, 0x0a, 0x1a, 0x2a, 0x3a, 0xfd, 0xed, 0xdd, 0xcd, 0xbd, 0xad, 0x9d, 0x8d, 0x7c, 0x6c, 0x5c, 0x4c, 0x3c, 0x2c, 0x1c, 0x0c, 0xef, 0xff, 0xcf, 0xdf, 0xaf, 0xbf, 0x8f, 0x9f, 0x6e, 0x7e, 0x4e, 0x5e, 0x2e, 0x3e, 0x0e, 0x1e) crc16ltab = ( \ 0x00, 0x21, 0x42, 0x63, 0x84, 0xa5, 0xc6, 0xe7, 0x08, 0x29, 0x4a, 0x6b, 0x8c, 0xad, 0xce, 0xef, 0x31, 0x10, 0x73, 0x52, 0xb5, 0x94, 0xf7, 0xd6, 0x39, 0x18, 0x7b, 0x5a, 0xbd, 0x9c, 0xff, 0xde, 0x62, 0x43, 0x20, 0x01, 0xe6, 0xc7, 0xa4, 0x85, 0x6a, 0x4b, 0x28, 0x09, 0xee, 0xcf, 0xac, 0x8d, 0x53, 0x72, 0x11, 0x30, 0xd7, 0xf6, 0x95, 0xb4, 0x5b, 0x7a, 0x19, 0x38, 0xdf, 0xfe, 0x9d, 0xbc, 0xc4, 0xe5, 0x86, 0xa7, 0x40, 0x61, 0x02, 0x23, 0xcc, 0xed, 0x8e, 0xaf, 0x48, 0x69, 0x0a, 0x2b, 0xf5, 0xd4, 0xb7, 0x96, 0x71, 0x50, 0x33, 0x12, 0xfd, 0xdc, 0xbf, 0x9e, 0x79, 0x58, 0x3b, 0x1a, 0xa6, 0x87, 0xe4, 0xc5, 0x22, 0x03, 0x60, 0x41, 0xae, 0x8f, 0xec, 0xcd, 0x2a, 0x0b, 0x68, 0x49, 0x97, 0xb6, 0xd5, 0xf4, 0x13, 0x32, 0x51, 0x70, 0x9f, 0xbe, 0xdd, 0xfc, 0x1b, 0x3a, 0x59, 0x78, 0x88, 0xa9, 0xca, 0xeb, 0x0c, 0x2d, 0x4e, 0x6f, 0x80, 0xa1, 0xc2, 0xe3, 0x04, 0x25, 0x46, 0x67, 0xb9, 0x98, 0xfb, 0xda, 0x3d, 0x1c, 0x7f, 0x5e, 0xb1, 0x90, 0xf3, 0xd2, 0x35, 0x14, 0x77, 0x56, 0xea, 0xcb, 0xa8, 0x89, 0x6e, 0x4f, 0x2c, 0x0d, 0xe2, 0xc3, 0xa0, 0x81, 0x66, 0x47, 0x24, 0x05, 0xdb, 0xfa, 0x99, 0xb8, 0x5f, 0x7e, 0x1d, 0x3c, 0xd3, 0xf2, 0x91, 0xb0, 0x57, 0x76, 0x15, 0x34, 0x4c, 0x6d, 0x0e, 0x2f, 0xc8, 0xe9, 0x8a, 0xab, 0x44, 0x65, 0x06, 0x27, 0xc0, 0xe1, 0x82, 0xa3, 0x7d, 0x5c, 0x3f, 0x1e, 0xf9, 0xd8, 0xbb, 0x9a, 0x75, 0x54, 0x37, 0x16, 0xf1, 0xd0, 0xb3, 0x92, 0x2e, 0x0f, 0x6c, 0x4d, 0xaa, 0x8b, 0xe8, 0xc9, 0x26, 0x07, 0x64, 0x45, 0xa2, 0x83, 0xe0, 0xc1, 0x1f, 0x3e, 0x5d, 0x7c, 0x9b, 0xba, 0xd9, 0xf8, 0x17, 0x36, 0x55, 0x74, 0x93, 0xb2, 0xd1, 0xf0) size = len(data) for i in xrange(size): b = data[i] print "- ", hex(ord(data[i])) byte = ord(b) index = crc_h ^ byte crc_h = crc_l ^ crc16htab[index] crc_l = crc16ltab[index] val = ( crc_l << 8 ) | crc_h return '0x%04X' % val Все это работает так Quote:
В TCL Делаю следующее Code: % package require crc16; 1.0.1 % crc::crc16 "\xFB\x01\x01\xF0\x01\x01" 54505 % crc::crc16 -format 0x%X "\xFB\x01\x01\xF0\x01\x01" 0xD4E9 А вот по этому вэб калькулятору получаю еще одну чуш ! http://www.zorc.breitbandkatze.de/crc.html Last edited by Nikita; 20.08.2005 at 18:52. | |
![]() |