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- #!/usr/bin/env python
- # -*- encoding: utf-8 -*-
- '''
- @文件 :hexBit.py
- @时间 :2021/12/09 13:48:58
- @作者 :None
- @版本 :1.0
- @说明 :获取位的值
- '''
- def a_bit(data, i):
- if i == 1:
- return data & 0x01
- if i == 2:
- return (data & 0x02) >> 1
- if i == 3:
- return (data & 0x04) >> 2
- if i == 4:
- return (data & 0x08) >> 3
- if i == 5:
- return (data & 0x10) >> 4
- if i == 6:
- return (data & 0x20) >> 5
- if i == 7:
- return (data & 0x40) >> 6
- if i == 8:
- return (data & 0x80) >> 7
- def hex_bcd(data):
- s = data // 16
- g = data % 16
- c = s * 10 + g
- return str(c)
- def bcd_hex(data):
- int_data = int(data)
- s = int_data // 10
- g = int_data % 10
- c = s * 16 + g
- return c
- def swap_bytes(word_val):
- msb = (word_val >> 8) & 0xFF
- lsb = word_val & 0xFF
- return (lsb << 8) + msb
- def calculate_crc_8(id, data):
- crc8table = (
- 0x00, 0x1d, 0x3a, 0x27, 0x74, 0x69, 0x4e, 0x53, 0xe8, 0xf5, 0xd2, 0xcf, 0x9c, 0x81,
- 0xa6, 0xbb, 0xcd, 0xd0, 0xf7, 0xea, 0xb9, 0xa4, 0x83, 0x9e, 0x25, 0x38, 0x1f, 0x02,
- 0x51, 0x4c, 0x6b, 0x76, 0x87, 0x9a, 0xbd, 0xa0, 0xf3, 0xee, 0xc9, 0xd4, 0x6f, 0x72,
- 0x55, 0x48, 0x1b, 0x06, 0x21, 0x3c, 0x4a, 0x57, 0x70, 0x6d, 0x3e, 0x23, 0x04, 0x19,
- 0xa2, 0xbf, 0x98, 0x85, 0xd6, 0xcb, 0xec, 0xf1, 0x13, 0x0e, 0x29, 0x34, 0x67, 0x7a,
- 0x5d, 0x40, 0xfb, 0xe6, 0xc1, 0xdc, 0x8f, 0x92, 0xb5, 0xa8, 0xde, 0xc3, 0xe4, 0xf9,
- 0xaa, 0xb7, 0x90, 0x8d, 0x36, 0x2b, 0x0c, 0x11, 0x42, 0x5f, 0x78, 0x65, 0x94, 0x89,
- 0xae, 0xb3, 0xe0, 0xfd, 0xda, 0xc7, 0x7c, 0x61, 0x46, 0x5b, 0x08, 0x15, 0x32, 0x2f,
- 0x59, 0x44, 0x63, 0x7e, 0x2d, 0x30, 0x17, 0x0a, 0xb1, 0xac, 0x8b, 0x96, 0xc5, 0xd8,
- 0xff, 0xe2, 0x26, 0x3b, 0x1c, 0x01, 0x52, 0x4f, 0x68, 0x75, 0xce, 0xd3, 0xf4, 0xe9,
- 0xba, 0xa7, 0x80, 0x9d, 0xeb, 0xf6, 0xd1, 0xcc, 0x9f, 0x82, 0xa5, 0xb8, 0x03, 0x1e,
- 0x39, 0x24, 0x77, 0x6a, 0x4d, 0x50, 0xa1, 0xbc, 0x9b, 0x86, 0xd5, 0xc8, 0xef, 0xf2,
- 0x49, 0x54, 0x73, 0x6e, 0x3d, 0x20, 0x07, 0x1a, 0x6c, 0x71, 0x56, 0x4b, 0x18, 0x05,
- 0x22, 0x3f, 0x84, 0x99, 0xbe, 0xa3, 0xf0, 0xed, 0xca, 0xd7, 0x35, 0x28, 0x0f, 0x12,
- 0x41, 0x5c, 0x7b, 0x66, 0xdd, 0xc0, 0xe7, 0xfa, 0xa9, 0xb4, 0x93, 0x8e, 0xf8, 0xe5,
- 0xc2, 0xdf, 0x8c, 0x91, 0xb6, 0xab, 0x10, 0x0d, 0x2a, 0x37, 0x64, 0x79, 0x5e, 0x43,
- 0xb2, 0xaf, 0x88, 0x95, 0xc6, 0xdb, 0xfc, 0xe1, 0x5a, 0x47, 0x60, 0x7d, 0x2e, 0x33,
- 0x14, 0x09, 0x7f, 0x62, 0x45, 0x58, 0x0b, 0x16, 0x31, 0x2c, 0x97, 0x8a, 0xad, 0xb0,
- 0xe3, 0xfe, 0xd9, 0xc4
- )
- xor_out = 0xff
- crc_value = 0xff
- crc_value = crc8table[crc_value ^ (id & 0xff)]
- crc_value = crc8table[crc_value ^ ((id >> 8) & 0xFF)]
- for count in range(len(data)):
- crc_value = crc8table[crc_value ^ data[count]]
- crc_value = crc_value ^ xor_out
- return crc_value
- def calculate_crc_16(data, num):
- crc = 0xFFFF
- i = 0
- while (num):
- crc = crc ^ data[i]
- i += 1
- for j in range(8):
- crc = ((crc >> 1) ^ 0xA001) if (crc & 0x0001) else (crc >> 1)
- num -= 1
- return crc
|
