def send(data, seq, flag, send_socket, target):
hexseq = hex(seq)[2:]
if len(hexseq) == 1:
hexseq = '0' + hexseq
print("Send Hex", hexseq, "Send FLAG", flag)
message = flag + hexseq + data
crc = cg.generate(message)
if len(crc) < 4:
crc = '0' + crc
print("Send crc", crc)
frame = bg.fill(message + crc)
print("Send Frame:", frame)
send_socket.sendto(frame.encode(), target)
def sendcheck(seq, receive_socket, target, state=False):
print("Feedback Start")
hexseq = hex(seq)[2:]
if len(hexseq) == 1:
hexseq = '0' + hexseq
print("Hex:", hexseq)
if state is False:
hexseq = '00' + hexseq
else:
hexseq = '01' + hexseq
print("State:", hexseq[:2])
crc = cg.generate(hexseq)
if len(crc) < 4:
crc = '0' + crc
print("Receive crc:", crc)
frame = bg.fill(hexseq + crc)
print("Feedback Frame:", frame)
print("Feedback stop:")
receive_socket.sendto(frame.encode(), target)
def send(message, seq):
# This data should be a Hex String List
_FLAG = False
hexseq = hex(seq)[2:]
if len(hexseq) == 1:
hexseq = '0' + hexseq
print("Send Hex", hexseq)
message = hexseq + message
crc = cg.generate(message)
if len(crc) < 4:
crc = '0' + crc
print("Crc", crc)
frame = bg.fill(message + crc)
print("Send Frame:", frame)
send_socket.sendto(frame.encode(), ('127.0.0.2', 8888))
try:
_FLAG = wait(hexseq)
except Exception as e:
print("Send Timeout!", e)
_FLAG = False
if _FLAG is False:
send(message, seq)
else:
return True
def make(seq_num, data=b''):
seq_bytes = seq_num.to_bytes(4, byteorder='little', signed=True)
crc = cg.generate(hex(data)[2:])
crc = crc.encode()
return seq_bytes + data + crc
def verify(message):
if cg.generate(message) == '0':
return True
else:
return False
import CRC.generate as cg
import CRC.verify as cf
binmessage = 0b010011011101010
hexmessage = hex(binmessage)[2:]
print(cg.generate((hexmessage)))
sendmessage = hexmessage + cg.generate(hexmessage)
print('Send Message:', sendmessage)
print('Verify:', cf.verify(sendmessage))
print('Error Message')
errormessage = list(sendmessage)
errormessage[0] = 'b'
errormessage[3] = 'c'
errormessage = ''.join(errormessage)
print('errormessage:', errormessage)
print('Test Verify:', cf.verify(errormessage))