def test_algorithm_checks(algorithm_name):
"""Check the result of every algorithm against its recorded check-word"""
check_word = crcengine.get_algorithm_params(algorithm_name, True)["check"]
crc_alg = crcengine.new(algorithm_name)
assert crc_alg(
b"123456789") == check_word, "Check CRC mismatch for {}".format(
algorithm_name)
def crc16_xmodem():
return crcengine.new('crc16-xmodem')
def crc16_kermit():
return crcengine.new('crc16-kermit')
def crc32():
return crcengine.new('crc32')
def test_crc32_bzip2():
crc32_bzip2 = crcengine.new('crc32-bzip2')
assert crc32_bzip2(b'A') == 0x81B02D8B
assert crc32_bzip2(b'123456789') == 0xFC891918
import socket
import crcengine
HOST = '127.0.0.1' # The server's hostname or IP address
PORT = 65432 # The port used by the server
crcAlg = crcengine.new('crc16-modbus')
def calcCrc (data):
return crcAlg(data)
def makebuff(s:str):
bts = bytearray(s,'ascii')
l = len(bts)
buff = bytearray(3)
buff[0]=255
buff[1]=255
buff[2]=l
buff.extend(bts)
crc = calcCrc(bts)
crcb = crc.to_bytes(2, byteorder='little')
print ("crc = {} [{}, {}]".format(crc, crcb[0], crcb[1]))
buff.extend(crcb)
return buff
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
s.connect((HOST, PORT))
txt = "Saying hello"
while str != "q":
buff = makebuff (txt)
s.sendall(buff)
def test_crc8_autosar():
crc8 = crcengine.new("crc8-autosar")
assert crc8(b"123456789") == 0xDF
def test_crc8_autosar():
crc8 = crcengine.new('crc8-autosar')
assert crc8(b'123456789') == 0xdf
def crc16_autosar():
return crcengine.new("crc16-autosar")
def test_crc8():
crc8 = crcengine.new("crc8")
assert crc8(b"123456789") == 0xBC
def crc16_xmodem():
return crcengine.new("crc16-xmodem")
def crc16_kermit():
return crcengine.new("crc16-kermit")
def crc32():
return crcengine.new("crc32")
def crc16_autosar():
return crcengine.new('crc16-autosar')
def test_crc8_bluetooth():
crc8 = crcengine.new("crc8-bluetooth")
assert crc8(b"123456789") == 0x26
def test_crc8():
crc8 = crcengine.new('crc8')
assert crc8(b'123456789') == 0xbc
import crcengine
if __name__ == '__main__':
params = crcengine.get_algorithm_params('crc32')
crcengine.generate_code(params, 'out/')
crcengine.generate_code('crc16-xmodem', 'out/')
filename = "out/crc16_xmodem.c"
print("Created {} with the following content:")
with open(filename, "r") as f:
file = f.read()
print(file)
available = crcengine.algorithms_available()
print("\nThe following algorithms are available")
print(", ".join(available))
data = b"123456789"
crc16x = crcengine.new("crc16-xmodem")
result = crc16x.calculate(data)
print("\nThe crc16-xmodem of {} is 0x{:x}".format(data.decode("ascii"),
result))
def test_crc8_bluetooth():
crc8 = crcengine.new('crc8-bluetooth')
assert crc8(b'123456789') == 0x26
def test_crc32_bzip2():
crc32_bzip2 = crcengine.new("crc32-bzip2")
assert crc32_bzip2(b"A") == 0x81B02D8B
assert crc32_bzip2(b"123456789") == 0xFC891918
