PyPI crc16
Project description
test
校验集装箱号是否正确
'''
'''
import CRC from CRC import *
def crc16_x25_test(data):
reg=0xffff
cal_poly=0x1021
for i in data:
reg^=reverse_data(i, 16)
for _ in range(8) :
if reg&0x8000 :
reg=reg<<1
reg&=0xffff
reg^=cal_poly
else :
reg=reg<<1
reg= reverse_data(reg, 16)
reg^=0xffff
return reg
if name == 'main':
data=b'\x01\x02\x03\x04\x05'
print(len(data),data)
crc=crc16_ccitt()
print(crc.class.name,"%04X"%(crc.cal(data)))
crc=crc16_ccitt_false()
print(crc.class.name,"%04X"%(crc.cal(data)))
crc=crc16_xmodem()
print(crc.class.name,"%04X"%(crc.cal(data)))
crc=crc16_x25()
print(crc.class.name,"%04X"%(crc.cal(data)))
crc=crc16_ibm()
print(crc.class.name,"%04X"%(crc.cal(data)))
crc=crc16_usb()
print(crc.class.name,"%04X"%(crc.cal(data)))
crc=crc16_maxim()
print(crc.class.name,"%04X"%(crc.cal(data)))
crc=crc16_modbus()
print(crc.class.name,"%04X"%(crc.cal(data)))
crc=crc16_dnp()
print(crc.class.name,"%04X"%(crc.cal(data)))
r=crc16_x25_test(data)
print("crc16_x25_test","%04x"%r)
pass
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