diff options
Diffstat (limited to 'qolab')
| -rw-r--r-- | qolab/hardware/rf_generator/qol_lmx2487.py | 55 |
1 files changed, 33 insertions, 22 deletions
diff --git a/qolab/hardware/rf_generator/qol_lmx2487.py b/qolab/hardware/rf_generator/qol_lmx2487.py index ed4ade2..e9011f9 100644 --- a/qolab/hardware/rf_generator/qol_lmx2487.py +++ b/qolab/hardware/rf_generator/qol_lmx2487.py @@ -11,19 +11,28 @@ class QOL_LMX2487(RFGenerator): The communication with RF generator is done via nodeMCU controlling esp2866 chip. """ - def __init__(self, *args, port='/dev/ttyUSB0', speed=115200, timeout=1, setToDefaults=False, **kwds): + + def __init__( + self, + *args, + port="/dev/ttyUSB0", + speed=115200, + timeout=1, + setToDefaults=False, + **kwds, + ): super().__init__(*args, **kwds) - self.config['Device model'] = 'QOL made RF generator based on TI LMX2487 chip' + self.config["Device model"] = "QOL made RF generator based on TI LMX2487 chip" self.port = port self.speed = speed self.timeout = timeout - self.connection = serial.Serial( self.port, self.speed, timeout=self.timeout) + self.connection = serial.Serial(self.port, self.speed, timeout=self.timeout) self.log = [] self.logCapacity = 10 self._FreqFixed = None self.hopeFree = True - self.hopeFreeFreqJump = 100e3 # we break laser lock if Freq change is larger - self.dwellTime=0.1 # needed for hope free setling + self.hopeFreeFreqJump = 100e3 # we break laser lock if Freq change is larger + self.dwellTime = 0.1 # needed for hope free setling if setToDefaults: self.sendSerialCmd("set_lmx2487_board_to_default_state()") @@ -39,20 +48,21 @@ class QOL_LMX2487(RFGenerator): return strOut def sendSerialCmd(self, cmd): - self.connection.write(bytes(cmd+'\r','ascii')) + self.connection.write(bytes(cmd + "\r", "ascii")) if "3.4" == serial.__version__: # older version style - resp = self.connection.read_until(terminator=b'> ') + resp = self.connection.read_until(terminator=b"> ") else: # new style after 20180616 - resp = self.connection.read_until(expected=b'> ') - resp = resp.decode('utf-8') + resp = self.connection.read_until(expected=b"> ") + resp = resp.decode("utf-8") self.add2log(resp) return resp @BasicInstrument.tsdb_append - def setFreqFixed(self,freq): - """ + def setFreqFixed(self, freq): + """Set frequency of RF signal. + Will do incremental hope free tuning to desired frequency, if self.hopeFree is True. RF generator itself is fine, but our laser looses lock without it. @@ -61,7 +71,7 @@ class QOL_LMX2487(RFGenerator): finished = False while not finished: frNow = self.getFreqFixed() - dF = freq-frNow + dF = freq - frNow if dF >= 0: dFSign = 1 else: @@ -73,7 +83,7 @@ class QOL_LMX2487(RFGenerator): else: fr = frNow + dFSign * self.hopeFreeFreqJump self._FreqFixed = fr - cmd_str=f'setFreq({fr:.2f})' + cmd_str = f"setFreq({fr:.2f})" self.sendSerialCmd(cmd_str) if not finished: time.sleep(self.dwellTime) @@ -82,20 +92,21 @@ class QOL_LMX2487(RFGenerator): def getFreqFixed(self): # talking to hardware is slow, so we use cached value if we can if self._FreqFixed is None: - resp = self.sendSerialCmd('getFreq()') - m = re.search('[0-9.]+', resp) + resp = self.sendSerialCmd("getFreq()") + m = re.search("[0-9.]+", resp) if m is not None: self._FreqFixed = float(m.group()) return self._FreqFixed -if __name__ == '__main__': +if __name__ == "__main__": import platform - if platform.system() == 'Linux': - rfgen=QOL_LMX2487(port='/dev/ttyUSB0', speed=115200, timeout=1) + + if platform.system() == "Linux": + rfgen = QOL_LMX2487(port="/dev/ttyUSB0", speed=115200, timeout=1) else: - rfgen=QOL_LMX2487(port='COM4', speed=115200, timeout=1) + rfgen = QOL_LMX2487(port="COM4", speed=115200, timeout=1) print("testing") - print('------ Header start -------------') - print(str.join('\n', rfgen.getHeader())) - print('------ Header ends -------------') + print("------ Header start -------------") + print(str.join("\n", rfgen.getHeader())) + print("------ Header ends -------------") |