# fill from bytes
pNull = array('B', [0x24, 0x04, 0x00, 0x28])
try:
p1.fromByteArray(pNull)
print "p1: " + p1.__str__()
except PacketException as e:
print e
# from single parameters, including CRC
try:
p2 = Packet()
p2.fromFields(0x24, 0x04, 0x02, None, 0x2a)
print "p2: " + p2.__str__()
except PacketException as e:
print e
# from single parameters, excluding CRC
try:
p3 = Packet()
p3.fromFields(0x24, 0x04, 0x02, None)
print "p3: " + p3.__str__()
except PacketException as e:
print e
