98 lines
2.2 KiB
Python
98 lines
2.2 KiB
Python
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#!/usr/bin/python3
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import datetime
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import serial
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class Error(Exception):
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pass
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class UnsupportedCommand(Error):
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pass
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class RequiredValueNotSet(Error):
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pass
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class OutOfRange(Error):
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pass
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class Saturated(Error):
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pass
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class ILT1000(object):
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def __init__(self, device, set_time=True):
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self._dev = serial.Serial(device, 115200)
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try:
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# clear junk in outgoing buffer
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self._SendCommand('echooff')
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except UnsupportedCommand:
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pass
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assert int(self._SendCommand('echooff')) == 0
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if set_time:
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self.SetDateTime()
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def _SendCommand(self, command):
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self._dev.write(command.encode('ascii') + b'\r\n')
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ret = self._dev.readline().rstrip().decode('ascii')
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if ret == '-999':
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raise UnsupportedCommand(command)
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if ret == '-500':
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raise RequiredValueNotSet(command)
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if ret == '-501':
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raise OutOfRange(command)
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if ret == '-502':
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raise Saturated(command)
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return ret
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def GetModelName(self):
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return self._SendCommand('getmodelname')
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def GetGeneration(self):
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return int(self._SendCommand('getgeneration'))
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def GetFirmwareVersion(self):
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return self._SendCommand('getfwversion')
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def GetSerialNumber(self):
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return self._SendCommand('getserialnumber')
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def GetControllerTempF(self):
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return int(self._SendCommand('gettemp'))
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def GetAmbientTempF(self):
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# Protocol doc indicates that this is degrees F * 100, but actual values
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# look like just degrees F
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return int(self._SendCommand('getambienttemp'))
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def GetDateTime(self):
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ret = self._SendCommand('getdatetime')
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return datetime.datetime.fromtimestamp(int(ret.split()[2]))
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def SetDateTime(self, now=None):
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now = now or datetime.datetime.utcnow()
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timestr = now.strftime('%m/%d/%Y %H:%M:%S')
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ret = self._SendCommand('setdatetime ' + timestr)
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assert int(ret) == 0
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def GetCurrentPicoAmps(self):
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ret = self._SendCommand('getcurrent')
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return float(ret)
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def GetVoltage(self):
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ret = self._SendCommand('getvoltage')
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return float(ret) / 1000000
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def GetTransmissionPercent(self):
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ret = self._SendCommand('gettrans')
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return float(ret) / 10
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def GetOpticalDensity(self):
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ret = self._SendCommand('getod')
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return float(ret) / 100
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