def _parse_csv(self, time, line):
"""
Parses incoming data and distributes to external processes.
:param time: Timestamp.
:type time: float.
:param line: Raw data coming from acquisition process.
:type line: basestring.
:return:
"""
if len(line) > 0:
try:
if type(line) == bytes:
values = line.decode("UTF-8").split(self._split)
elif type(line) == str:
values = line.split(self._split)
else:
raise TypeError
values = [float(v) for v in values]
Log.d(TAG, values)
self._out_queue.put((time, values))
if self._store_reference is not None:
self._store_reference.add(time, values)
except ValueError:
Log.w(TAG,
"Can't convert to float. Raw: {}".format(line.strip()))
except AttributeError:
Log.w(
TAG, "Attribute error on type ({}). Raw: {}".format(
type(line), line.strip()))
def set_user_log_level(self):
"""
Sets the user specified log level.
:return:
"""
if self._parser is not None:
self._parse_log_level()
else:
Log.w(TAG, "Parser was not created !")
return None
def get_source_speeds(source):
"""
Gets the available speeds for specified source.
:param source: Source to get available speeds.
:type source: SourceType.
:return: List of available speeds.
:rtype: str list.
"""
if source == SourceType.serial:
return SerialProcess.get_speeds()
else:
Log.w(TAG, "Unknown source selected")
return None
def run(self):
"""
Reads the serial port expecting CSV until a stop call is made.
The expected format is comma (",") separated values, and a new line (CRLF or LF) as a new row.
While running, it will parse CSV data convert each value to float and added to a queue.
If incoming data from serial port can't be converted to float, that data will be discarded.
:return:
"""
Log.i(TAG, "Process starting...")
if self._is_port_available(self._serial.port):
if not self._serial.isOpen():
self._serial.open()
Log.i(TAG, "Port opened")
timestamp = time()
while not self._exit.is_set():
self._parser.add(
[time() - timestamp,
self._serial.readline()])
Log.i(TAG, "Process finished")
self._serial.close()
else:
Log.w(TAG, "Port is not opened")
else:
Log.w(TAG, "Port is not available")
