diff options
| -rw-r--r-- | qolab/hardware/rf_generator/__init__.py | 1 | ||||
| -rw-r--r-- | qolab/hardware/rf_generator/qol_lmx2487.py | 59 |
2 files changed, 60 insertions, 0 deletions
diff --git a/qolab/hardware/rf_generator/__init__.py b/qolab/hardware/rf_generator/__init__.py index 6de404a..efa1af4 100644 --- a/qolab/hardware/rf_generator/__init__.py +++ b/qolab/hardware/rf_generator/__init__.py @@ -22,5 +22,6 @@ class RFGeneratorSCPI(SCPIinstr, RFGenerator): self.config['DeviceId'] = str.strip(self.idn) from .agilent_e8257d import AgilentE8257D +from .qol_lmx2487 import QOL_LMX2487 diff --git a/qolab/hardware/rf_generator/qol_lmx2487.py b/qolab/hardware/rf_generator/qol_lmx2487.py new file mode 100644 index 0000000..1c5d588 --- /dev/null +++ b/qolab/hardware/rf_generator/qol_lmx2487.py @@ -0,0 +1,59 @@ +from qolab.hardware.basic import BasicInstrument +import serial + + +class QOL_LMX2487(RFGenerator): + """ + QOL lab made RF generator based on TI LMX2487 chip. + The communication with RF generator is done via nodeMCU controlling esp2866 chip. + """ + def __init__(self, *args, port='/dev/ttyUSB0', speed=115200, timeout=1, setToDefaults=True, **kwds): + super().__init__(*args, **kwds) + self.port = port + self.speed = speed + self.timeout = timeout + self.connection = serial.Serial( self.port, self.speed, timeout=self.timeout) + self.log = [] + self.logCapacity = 10 + self._FreqFixed = None + if setToDefaults: + self.sendSerialCmd("set_lmx2487_board_to_default_state()") + + def add2log(self, text): + self.log.append(text) + while len(self.log) > self.logCapacity: + self.log.pop(0) + + def log2str(self, interval=None): + strOut = "" + for e in self.log: + strOut += e + return strOut + + def sendSerialCmd(self, cmd): + self.connection.write(bytes(cmd+'\r','ascii')) + if "3.4" == serial.__version__: + # older version style + resp = self.connection.read_until(terminator=b'> ') + else: + # new style after 20180616 + resp = self.connection.read_until(expected=b'> ') + resp = resp.decode('utf-8') + self.add2log(resp) + return resp + + @BasicInstrument.tsdb_append + def setFreqFixed(self,freq): + self._FreqFixed = freq + cmd_str=f'setFreq({freq:.2f})' + self.sendSerialCmd(cmd_str) + + @BasicInstrument.tsdb_append + def getFreqFixed(self): + """ + getFreqFixed unable to get frequency from hardware. + So we use value from previews setFreqFixed. + """ + return self._FreqFixed + + |