def __hex__(self):
return "%(title)s00%(type)s%(altitude)s0000%(latitude)s%(longitude)s" % {
'latitude' : Utilities.swap(hex(self.latitude)),
'longitude' : Utilities.swap(hex(self.longitude)),
'altitude' : Utilities.swap(Utilities.dec2hex(self.altitude,4)),
'type' : Utilities.dec2hex(self.type,2),
'title' : Utilities.chr2hex(self.title.ljust(6)[:6])
}
def _readPayload(self):
# find the payload and read the exact number of bytes 1 at a time
# much faster than guessing at it and waiting for the timeout
# byte by byte improves flow control/buffer overruns in linux
raw = ''
data = Utilities.chr2hex(self.serial.read(3))
if data:
payload = int(data[2:6], 16)
if payload > 0:
for i in range (0, payload):
raw += self.serial.read()
# read the last checksum byte
raw += self.serial.read()
data += Utilities.chr2hex(raw)
self.logger.debug("serial port returned: %s" % data if len(data) < 30 else "%s... (truncated)" % data[:30])
#self.logger.debug("serial port returned: %s" % data)
return data
else:
return None
def _read(self, size = 2070):
data = Utilities.chr2hex(self.serial.read(size))
#self.logger.debug("serial port returned: %s" % data if len(data) < 30 else "%s... (truncated)" % data[:30])
self.logger.debug("serial port returned: %s" % data)
return data
