def status(self):
if self._value is None:
raise MissingResponse()
if self._value.error:
return ["response received with framing error"]
v = self._value[7:0]
l = []
for b in self.bits:
if v & 0x01 and b:
l.append(b)
v = (v >> 1)
return l
def send(self, command, timeout=2000):
self.backend.write(self.construct(command))
frame = None
backoff = 0.010
if command.response is not None:
for i in range(7):
frame = self.extract(self.backend.read(timeout=timeout))
if isinstance(frame, HassebDALIUSBNoAnswer):
self.backend.write(self.construct(command))
if isinstance(frame, BackwardFrame):
if command.response:
return command.response(frame)
return frame
backoff += backoff
sleep(backoff)
raise MissingResponse()
return None
def value(self):
if self._value is None and self._expected:
raise MissingResponse()
if self._value and self._value.error and not self._error_acceptable:
raise ResponseError()
return self._value