def header_and_standard_function(housecode, functionCode, dims=0):
"""Return 2 bytes encoding the given housecode, function and number of dims"""
if not isinstance(functionCode, int):
functionCode = UNDERSCORED_LOWERCASE_FUNCTION_TO_CODE_MAP[functionCode]
hi = header(dims, True, False)
lo = address_or_function_code(housecode, functionCode)
return utils.bytes_2_str((hi, lo))
def get_host():
"""
消费者获取未爬取的IP地址
"""
ip_str = DB.redis.blpop(RedisKey.UNFEACH_IP)
if ip_str is None:
return None
ip_str = bytes_2_str(ip_str[1])
return ip_str
def encodeClockBytes(housecode, theTime = datetime.datetime.now(), timerPurge=False, clearBatteryTimer=False, clearMonitoredStatus=False):
# From protocol.txt:
#
# For a CM11, the time request from the interface is: 0xa5.
#
# The PC must then respond with the following transmission
#
# Note: The bit range is backwards from what you'd expect in serial
# communications. Bit 55-48 is actually the first byte transmitted,
# etc. To make matters worse, the bit orientation is correct within
# the bit range, IE bits 4-7 of byte 6 _IS_ the monitored house code.
# Further, bits 0 and 1 of byte 6 appear to be flipped. I get a
# "monitor status clear" if bit 0 is set.
# The original docs had bit 23 as part of current hours AND day.
# DBS Jan 1, 1997
#
# Descriptions of bits 0-3 are now correct as shown below.
# CWS Sep 1, 2002
#
# Bit range Description
# 55 to 48 timer download header (0x9b) (byte 0)
# 47 to 40 Current time (seconds) (byte 1)
# 39 to 32 Current time (minutes ranging from 0 to 119) (byte 2)
# 31 to 24 Current time (hours/2, ranging from 0 to 11) (byte 3)
# 23 to 15 Current year day (MSB is bit 15) (byte 4+.1)
# 14 to 8 Day mask (SMTWTFS) (byte 5-.1)
# 7 to 4 Monitored house code (byte 6...)
# 3 Reserved
# 2 Timer purge flag
# 1 Battery timer clear flag
# 0 Monitored status clear flag
#
# The CM11a will not respond to any other transmission until its time
# request is satisfied. Per Buzz Burrowes, sending just the header (0x9b)
# followed by some indeterminate delay of the order of 10 milliseconds
# is sufficient to satisfy the time request without having to modify the
# clock setting. (CWS May 19, 2003)
x10_housecode = HOUSECODE_TO_VALUE_MAP[housecode]
yearday = int(theTime.strftime("%j"))
weekday = int(theTime.strftime("%w"))
daymask = 1 << weekday
clearFlags = 0
if timerPurge: clearFlags |= (1 << 2)
if clearBatteryTimer: clearFlags |= (1 << 1)
if clearMonitoredStatus: clearFlags |= 1
return utils.bytes_2_str([theTime.second,
theTime.minute + 60 * (theTime.hour & 1),
theTime.hour / 2,
yearday % 256,
((yearday / 256) << 7) | daymask,
(x10_housecode << 4) | clearFlags])
def get_range(length):
"""
从Redis中获取指定个数的未扫描IP
:param length: 未扫描IP的个数
:return: 指定个数的未扫描IP地址
"""
pipe = DB.redis.pipeline()
pipe.lrange(RedisKey.UNSCAN_IP, 0, length - 1)
pipe.ltrim(RedisKey.UNSCAN_IP, length, -1)
result = pipe.execute()
if result is None:
return None
return [bytes_2_str(ip) for ip in result[0]]
def testHeaderAndFunction(self):
self.assertEqual(utils.bytes_2_str((0x86, 0x64)), header_and_standard_function("A", "dim", 16))
def testHeaderAndAddress(self):
self.assertEqual(utils.bytes_2_str((0x4, 0x6E)), header_and_address("A", 2))
def header_and_address(housecode, address): """Return 2 bytes encoding the given housecode and address""" hi = header(0, False, False) lo = address_or_function_code(housecode, UNITCODE_TO_VALUE_MAP[address]) return utils.bytes_2_str((hi, lo))
