24 lines
543 B
Python
24 lines
543 B
Python
|
#!/usr/bin/env python
|
||
|
|
|
||
|
|
# Reverse the binary of thesebarker codes for the host code
|
||
|
|
barkers = (0x0d, 0x72)
|
||
|
|
distances = []
|
||
|
|
corrections = []
|
||
|
|
|
||
|
|
def count_bits(x):
|
||
|
|
i = 0
|
||
|
|
while x:
|
||
|
|
i += 1
|
||
|
|
x &= x - 1
|
||
|
|
return i
|
||
|
|
|
||
|
|
for i in range(128):
|
||
|
|
diffs = [(count_bits(barkers[0] ^ i), barkers[0]),
|
||
|
|
(count_bits(barkers[1] ^ i), barkers[1])]
|
||
|
|
diffs.sort()
|
||
|
|
distances.append(diffs[0][0])
|
||
|
|
corrections.append(diffs[0][1])
|
||
|
|
|
||
|
|
print "Barker distance:", distances
|
||
|
|
print "Barker correct:", ["0x%x" % c for c in corrections]
|