def cmd_disableRegulation(self,the_command): '''disables temperature regulation, important to run before quitting''' b = sb.SetTemperatureRegulationParams() b.regulation = 0 b.ccdSetpoint = 1000 sb.SBIGUnivDrvCommand(sb.CC_SET_TEMPERATURE_REGULATION, b, None) a = sb.QueryTemperatureStatusResults() sb.SBIGUnivDrvCommand(sb.CC_QUERY_TEMPERATURE_STATUS,None,a) #A-D unit conversion v1 = 4096.0/b.ccdSetpoint v2 = 10.0/(v1-1.0) setPointC = int(25.0 - 25.0 *((np.log(v2/3.0))/0.943906)) v3 = 4096.0/a.ccdThermistor v4 = 10.0/(v3-1.0) TempC = 25.0 - 25.0 *((np.log(v4/3.0))/0.943906) TempC_round = round(TempC, 2) #associates the binary output of the refulation variable with on or off for the purposes of printing if b.regulation == 1 : reg = 'on' elif b.regulation == 0 : reg = 'off' return 'regulation = ' +str(reg) +'\n power = '+str(a.power) + '\n CCD set point (A/D) = '\ + str(a.ccdSetpoint) + ', CCD set point (C) = ' + str(setPointC)+'\n current CCD temp (A/D) = '\ + str(a.ccdThermistor) + ', current CCD temp (C)' + str(TempC_round)+ '\n'
def cmd_setTemperature(self,the_command): '''this command sets the temperature of the imaging CCD, input is in degrees C.''' commands = str.split(the_command) if len(commands) < 2 : return 'error: no input value' b = sb.SetTemperatureRegulationParams() b.regulation = 1 #tests input validity, if not an integer value then input is rejected try: tempC = int(commands[1]) except Exception: return 'invalid input (Please input an integer value in degrees C)' #Converts the degrees C input into A-D units, A-D units are interpretted and used by the driver v1 = (3.0 * np.exp((0.943906 * (25.0 -tempC))/25.0)) temp = int(4096.0/((10.0/v1) + 1.0)) b.ccdSetpoint = temp sb.SBIGUnivDrvCommand(sb.CC_SET_TEMPERATURE_REGULATION, b, None) #calls the querey temperature command to check current CCD status time.sleep(0.1) a = sb.QueryTemperatureStatusResults() sb.SBIGUnivDrvCommand(sb.CC_QUERY_TEMPERATURE_STATUS,None,a) #converts thermistor value and setpoint to degrees C SPa = a.ccdThermistor v2 = 4096.0/SPa v3 = 10.0/(v2-1.0) ccdThermistorC = 25.0 - 25.0 *((np.log(v3/3.0))/0.943906) ccdThermistorC_rounded = round(ccdThermistorC, 2) #associates the binary output of the refulation variable with on or off for the purposes of printing if b.regulation == 1 : reg = 'on' elif b.regulation == 0 : reg = 'off' #prints useful values to screen return ' regulation = ' +str(reg) +'\n power = '+str(a.power) + '\n CCD set point (A/D) = '\ + str(a.ccdSetpoint) + ', CCD set point (C) = ' + str(tempC)+'\n current CCD temp (A/D) = '\ + str(a.ccdThermistor) + ', current CCD temp (C) = ' + str(ccdThermistorC_rounded) +'\n'
def cmd_closeLink(self,the_command): '''turns off the temperature regualtion, if not already done, before closing the link''' b = sb.SetTemperatureRegulationParams() b.regulation = 0 b.ccdSetpoint = 1000 sb.SBIGUnivDrvCommand(sb.CC_SET_TEMPERATURE_REGULATION, b, None) # No argument - this function shuts down the driver and connection to the CCD, run before quitting sb.SBIGUnivDrvCommand(sb.CC_CLOSE_DEVICE, None,None) sb.SBIGUnivDrvCommand(sb.CC_CLOSE_DRIVER, None,None) return 'link closed \n'
def setTemperature(self, regulation, setpoint, autofreeze=True):
strp = udrv.SetTemperatureRegulationParams()
if regulation == True:
strp.regulation = udrv.REGULATION_ON
else:
strp.regulation = udrv.REGULATION_OFF
strp.ccdSetpoint = TemperatureSetPoint.toAD(setpoint)
self._cmd(udrv.CC_SET_TEMPERATURE_REGULATION, strp, None)
# activate autofreeze if enabled
if autofreeze == True:
strp = udrv.SetTemperatureRegulationParams()
strp.regulation = udrv.REGULATION_ENABLE_AUTOFREEZE
return self._cmd(udrv.CC_SET_TEMPERATURE_REGULATION, strp, None)
return True