def _send_and_read(self, message):
'''
Performs the communication with the device
Raises an error if one occurred
Returns a list of bytes
Input:
message (string) : string conform the IVVI protocol
Output:
data_out_numbers (int[]) : return message
'''
logging.debug(__name__ + ' : do communication with instrument')
vpp43.write(self._vi, message)
sleep(0.1)
data_out_string = vpp43.read(
self._vi,
vpp43.get_attribute(self._vi, vpp43.VI_ATTR_ASRL_AVAIL_NUM))
sleep(0.1)
data_out_numbers = [ord(s) for s in data_out_string]
if (data_out_numbers[1] != 0) or (len(data_out_numbers) !=
data_out_numbers[0]):
logging.error(__name__ + ' : Error while reading : %s',
data_out_numbers)
return data_out_numbers
def _empty_buffer(self):
'''
empty buffer of COM port
'''
logging.debug(__name__ + ' : do communication with instrument')
data_out_string = vpp43.read(self._vi, vpp43.get_attribute(self._vi, vpp43.VI_ATTR_ASRL_AVAIL_NUM))
return data_out_string
def _empty_buffer(self):
'''
empty buffer of COM port
'''
logging.debug(__name__ + ' : do communication with instrument')
data_out_string = vpp43.read(
self._vi,
vpp43.get_attribute(self._vi, vpp43.VI_ATTR_ASRL_AVAIL_NUM))
return data_out_string
def __init__(self, resource_name, timeout=10000):
"""
@timeout in milliseconds
"""
self._resource_name = resource_name
self._timeout = timeout
# Check model code to make sure we are using the right command language
vi = vpp43.open(visa.resource_manager.session, resource_name)
model_code = vpp43.get_attribute(vi, vpp43.VI_ATTR_MODEL_CODE)
vpp43.close(vi)
if model_code != self._model_code:
raise OceanOpticsError('The spectrometer reported a different '
'model code ({}) than the driver expected '
'({}).'.format(model_code, self._model_code))
self._vi = None # connection not currently open
def __init__(self, resource_name, timeout=10000):
"""
@timeout in milliseconds
"""
self._resource_name = resource_name
self._timeout = timeout
# Check model code to make sure we are using the right command language
vi = vpp43.open(visa.resource_manager.session, resource_name)
model_code = vpp43.get_attribute(vi, vpp43.VI_ATTR_MODEL_CODE)
vpp43.close(vi)
if model_code != self._model_code:
raise OceanOpticsError('The spectrometer reported a different '
'model code ({}) than the driver expected '
'({}).'.format(model_code,
self._model_code))
self._vi = None # connection not currently open
def _read_reply(self, max_sleeps=100):
'''
Read reply from the Zaber.
<max_sleeps> is the maximum number of 50msec sleeps. The default is
100 for a maximum delay of 5 seconds.
'''
i = 0
while i < max_sleeps:
navail = vpp43.get_attribute(self._visa.vi, vpp43.VI_ATTR_ASRL_AVAIL_NUM)
if navail >= 6:
reply = vpp43.read(self._visa.vi, navail)
reply = [ord(ch) for ch in reply]
return reply
i += 1
time.sleep(0.05)
return None
def _read_reply(self, max_sleeps=100):
'''
Read reply from the Zaber.
<max_sleeps> is the maximum number of 50msec sleeps. The default is
100 for a maximum delay of 5 seconds.
'''
i = 0
while i < max_sleeps:
navail = vpp43.get_attribute(self._visa.vi,
vpp43.VI_ATTR_ASRL_AVAIL_NUM)
if navail >= 6:
reply = vpp43.read(self._visa.vi, navail)
reply = [ord(ch) for ch in reply]
return reply
i += 1
time.sleep(0.05)
return None
def _read_buffer(self):
'''
Returns a string containing the content of the buffer
Input:
None
Output:
buffer (string) : data in buffer
'''
logging.debug(__name__ + ' : Reading buffer')
tekst = vpp43.read(self._vi,vpp43.get_attribute(self._vi,
vpp43.VI_ATTR_ASRL_AVAIL_NUM))
sleep(0.05)
if (tekst==''):
return tekst
elif (tekst[0]=='E'):
logging.error(__name__ + ' : An error occurred during \
readout of instrument : ' + tekst)
else:
return tekst
def _read_buffer(self):
'''
Returns a string containing the content of the buffer
Input:
None
Output:
buffer (string) : data in buffer
'''
logging.debug(__name__ + ' : Reading buffer')
tekst = vpp43.read(
self._vi,
vpp43.get_attribute(self._vi, vpp43.VI_ATTR_ASRL_AVAIL_NUM))
sleep(0.05)
if (tekst == ''):
return tekst
elif (tekst[0] == 'E'):
logging.error(__name__ + ' : An error occurred during \
readout of instrument : ' + tekst)
else:
return tekst
def _send_and_read(self, message):
'''
Performs the communication with the device
Raises an error if one occurred
Returns a list of bytes
Input:
message (string) : string conform the IVVI protocol
Output:
data_out_numbers (int[]) : return message
'''
logging.debug(__name__ + ' : do communication with instrument')
vpp43.write(self._vi, message)
sleep(0.1)
data_out_string = vpp43.read(self._vi, vpp43.get_attribute(self._vi, vpp43.VI_ATTR_ASRL_AVAIL_NUM))
sleep(0.1)
data_out_numbers = [ord(s) for s in data_out_string]
if (data_out_numbers[1] != 0) or (len(data_out_numbers) != data_out_numbers[0]):
logging.error(__name__ + ' : Error while reading : %s', data_out_numbers)
return data_out_numbers
def autodetect_spectrometer(resource_name, *args, **kwargs):
"""
Factory method which creates an appropriate instrument object, depending
on the model code that the unit identifies itself with.
"""
vi = vpp43.open(visa.resource_manager.session, resource_name)
model_code = vpp43.get_attribute(vi, vpp43.VI_ATTR_MODEL_CODE)
vpp43.close(vi)
if model_code == 4098:
return USB2000(resource_name, *args, **kwargs)
if model_code == 4100:
return ADC1000(resource_name, *args, **kwargs)
if model_code == 4106:
return HR2000(resource_name, *args, **kwargs)
if model_code == 4114:
return HR4000(resource_name, *args, **kwargs)
if model_code == 4118:
return HR2000Plus(resource_name, *args, **kwargs)
if model_code == 4120:
return QE65000(resource_name, *args, **kwargs)
if model_code == 4126:
return USB2000Plus(resource_name, *args, **kwargs)
if model_code == 4130:
return USB4000(resource_name, *args, **kwargs)
if model_code == 4134:
return NIRQuest512(resource_name, *args, **kwargs)
if model_code == 4136:
return NIRQuest256(resource_name, *args, **kwargs)
if model_code == 4138:
return MayaPro(resource_name, *args, **kwargs)
if model_code == 4140:
return Maya(resource_name, *args, **kwargs)
if model_code == 4160:
return Torus(resource_name, *args, **kwargs)
raise visa.VisaIOError(OO_ERROR_MODEL_NOT_FOUND)
def autodetect_spectrometer(resource_name, *args, **kwargs):
"""
Factory method which creates an appropriate instrument object, depending
on the model code that the unit identifies itself with.
"""
vi = vpp43.open(visa.resource_manager.session, resource_name)
model_code = vpp43.get_attribute(vi, vpp43.VI_ATTR_MODEL_CODE)
vpp43.close(vi)
if model_code == 4098:
return USB2000(resource_name, *args, **kwargs)
if model_code == 4100:
return ADC1000(resource_name, *args, **kwargs)
if model_code == 4106:
return HR2000(resource_name, *args, **kwargs)
if model_code == 4114:
return HR4000(resource_name, *args, **kwargs)
if model_code == 4118:
return HR2000Plus(resource_name, *args, **kwargs)
if model_code == 4120:
return QE65000(resource_name, *args, **kwargs)
if model_code == 4126:
return USB2000Plus(resource_name, *args, **kwargs)
if model_code == 4130:
return USB4000(resource_name, *args, **kwargs)
if model_code == 4134:
return NIRQuest512(resource_name, *args, **kwargs)
if model_code == 4136:
return NIRQuest256(resource_name, *args, **kwargs)
if model_code == 4138:
return MayaPro(resource_name, *args, **kwargs)
if model_code == 4140:
return Maya(resource_name, *args, **kwargs)
if model_code == 4160:
return Torus(resource_name, *args, **kwargs)
raise visa.VisaIOError(OO_ERROR_MODEL_NOT_FOUND)
def _clear_buffer(self):
navail = vpp43.get_attribute(self._visa.vi,
vpp43.VI_ATTR_ASRL_AVAIL_NUM)
if navail > 0:
reply = vpp43.read(self._visa.vi, navail)
def _read_buffer(self):
response=vpp43.read(self._vi, vpp43.get_attribute(self._vi,
vpp43.VI_ATTR_ASRL_AVAIL_NUM))
sleep(self._sleeptime)
return response
def _clear_buffer(self):
navail = vpp43.get_attribute(self._visa.vi, vpp43.VI_ATTR_ASRL_AVAIL_NUM)
if navail > 0:
reply = vpp43.read(self._visa.vi, navail)
def get_navail(visains):
'''
Return number of bytes available to read from visains.
'''
return vpp43.get_attribute(visains, vpp43.VI_ATTR_ASRL_AVAIL_NUM)
def get_navail(visains):
'''
Return number of bytes available to read from visains.
'''
return vpp43.get_attribute(visains, vpp43.VI_ATTR_ASRL_AVAIL_NUM)
def _read_buffer(self):
response = vpp43.read(
self._vi,
vpp43.get_attribute(self._vi, vpp43.VI_ATTR_ASRL_AVAIL_NUM))
sleep(self._sleeptime)
return response