File size: 1,332 Bytes
f5dbfe6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | import libscrc
# load in csv with decoded bytes from manchester signal
# sort packets by finding the start cmd from the controller
file = "controller-firmware/python/src/sandbox/t.txt"
def bin_to_bytes(s):
return bytes(int(s[i:i+8][::-1], 2) for i in range(0, len(s), 8))
def get_packets(filename):
with open(filename) as f:
next(f) # skip header
packet = []
prev_ts = None
for line in f:
ts, value = line.strip().split(',')
ts = float(ts)
if prev_ts is not None and ts - prev_ts > 500e-9:
yield packet
packet = []
prev_ts = ts
packet.append(int(value))
yield packet
results = []
for packet in get_packets(file):
s = ''.join(str(x) for x in packet)
if not s.startswith('0101010101010101001111110') or not s.count('111111') == 2 or not s.endswith('01111110'):
print("bad packet")
continue
payload = s[25:-8].replace('111110', '11111')
if payload == '1111111111111111':
continue
print(payload)
b = bin_to_bytes(payload)
#results.append(b)
#print("\t".join(f"{byte:d}" for byte in b))
#print(results)
# 10100000 00100100 01011000 10010001 11011001 10110100 00000000 00100010 01011111 10010000 00000000 00000000 00100110 00010111 |