def __init__(self,roach=None,wafer=0,roachip='roach',adc_valon=None):
"""
Class to represent the heterodyne readout system (high-frequency (1.5 GHz), IQ mixers)
roach: an FpgaClient instance for communicating with the ROACH.
If not specified, will try to instantiate one connected to *roachip*
wafer: 0
Not used for heterodyne system
roachip: (optional). Network address of the ROACH if you don't want to provide an FpgaClient
adc_valon: a Valon class, a string, or None
Provide access to the Valon class which controls the Valon synthesizer which provides
the ADC and DAC sampling clock.
The default None value will use the valon.find_valon function to locate a synthesizer
and create a Valon class for you.
You can alternatively pass a string such as '/dev/ttyUSB0' to specify the port for the
synthesizer, which will then be used for creating a Valon class.
Finally, for test suites, you can directly pass a Valon class or a class with the same
interface.
"""
if roach:
self.r = roach
else:
from corr.katcp_wrapper import FpgaClient
self.r = FpgaClient(roachip)
t1 = time.time()
timeout = 10
while not self.r.is_connected():
if (time.time()-t1) > timeout:
raise Exception("Connection timeout to roach")
time.sleep(0.1)
if adc_valon is None:
import valon
ports = valon.find_valons()
if len(ports) == 0:
raise Exception("No Valon found!")
self.adc_valon_port = ports[0]
self.adc_valon = valon.Synthesizer(ports[0]) #use latest port
elif type(adc_valon) is str:
import valon
self.adc_valon_port = adc_valon
self.adc_valon = valon.Synthesizer(self.adc_valon_port)
else:
self.adc_valon = adc_valon
self.adc_atten = -1
self.dac_atten = -1
self.bof_pid = None
self.roachip = roachip
self.fs = self.adc_valon.get_frequency_a()
self.wafer = wafer
self.dac_ns = 2**16 # number of samples in the dac buffer
self.raw_adc_ns = 2**12 # number of samples in the raw ADC buffer
self.nfft = 2**14
self.boffile = 'iq2xpfb14mcr4_2013_Aug_02_1446.bof'
self.bufname = 'ppout%d' % wafer
def __init__(self,roach=None,roachip='roach',adc_valon = None):
"""
Class to represent the heterodyne readout system (high frequency, 1.5 GHz, with IQ mixers)
roach: an FpgaClient instance for communicating with the ROACH. If not specified,
will try to instantiate one connected to *roachip*
roachip: (optional). Network address of the ROACH if you don't want to provide an FpgaClient
"""
if roach:
self.r = roach
else:
from corr.katcp_wrapper import FpgaClient
self.r = FpgaClient(roachip)
t1 = time.time()
timeout = 10
while not self.r.is_connected():
if (time.time()-t1) > timeout:
raise Exception("Connection timeout to roach")
time.sleep(0.1)
if adc_valon is None:
import valon
ports = valon.find_valons()
if len(ports) == 0:
raise Exception("No Valon found!")
self.adc_valon_port = ports[0]
self.adc_valon = valon.Synthesizer(ports[0]) #use latest port
elif type(adc_valon) is str:
import valon
self.adc_valon_port = adc_valon
self.adc_valon = valon.Synthesizer(self.adc_valon_port)
else:
self.adc_valon = adc_valon
self.fs = self.adc_valon.get_frequency_a()
self.dac_ns = 2**16 # number of samples in the dac buffer
self.raw_adc_ns = 2**11 # number of samples in the raw ADC buffer
self.nfft = 2**14
self.boffile = 'iqx2fft14dac14r1_2013_Jun_24_1921.bof'