def check_control_bits(packet, counter):
amount = 0
temp_counter = Bits(int=counter, length=4)
pos = temp_counter.find('0b1')
pos_int = pos[0]
for i in range(1, 8):
temp_pos = Bits(int=i, length=4)
res = BitArray(temp_pos ^ temp_counter)
if res._readbin(1, pos_int) == '0' and packet._readbin(
1, i - 1) == '1':
amount += 1
return amount
