#-- Find which serial port controls the SR785 (if this succeeds, comms work)
wstderr("\nFinding instrument...\n")
matches = SR785.findInstrument(
model="SR785",
searchSerial=True, searchEthernet=False, searchGPIB=False,
idnQueryStr="OUTX RS232;*IDN?",
debug=DEBUG)
if len(matches['serial']) == 0:
raise Exception("Cannot find a serial port, or SR785 not attached to a serial port")
#-- Open the first matching serial port
SR785.openPort(matches['serial'][0])
idnStr = SR785.query("*IDN?")
# Log file...
homeDir = os.path.expanduser("~")
dataBaseDir = os.path.join(homeDir, "gibble", "data")
dataSubDir = os.path.join(dataBaseDir, time.strftime("%Y"),
time.strftime("%m-%b"),
time.strftime("%d"))
#-- Find existing run sub-directories and label this run accordingly
if os.path.isdir(dataSubDir):
existingRunDirs = [ d for d in os.listdir(dataSubDir) if
os.path.isdir(os.path.join(dataSubDir,d)) ]
else:
existingRunDirs = []
runDirRE = re.compile(r"^SR785run([0-9]+)")
ipAddress=ipAddress)
scopeIDN = tekScope.query("*IDN?")
except:
raise Exception("Expected Tek scope on Ethernet port. Aborting.")
#==============================================================================
#-- Establish comms with DDS
#==============================================================================
try:
#-- Set up DDS comms
DDS = InstrumentComms(useSerial=True, useEthernet=False, serCmdTerm='\n',
baud=115200, dsrdtr=True)
DDS.simpleSerial()
commsType = "serial"
#-- Grab IDN string
DDSIDN = DDS.query("*IDN?")
except:
raise Exception("Expected DDS on serial port. Aborting.")
#==============================================================================
#-- Set scope channels, measurements
#==============================================================================
#==============================================================================
#-- Read initial DDS parameters
#==============================================================================
#==============================================================================
#-- Try to establish what the system gain is in V/Hz
#==============================================================================
freqScales = np.logspace(-6, +7, 14)
import sys
from instrumentComms import InstrumentComms
DEBUG = False
def wstdout(txt):
sys.stdout.write(txt)
sys.stdout.flush()
def wstderr(txt):
sys.stderr.write(txt)
sys.stderr.flush()
if __name__ == "__main__":
ipAddress = "128.118.112.2"
httpPort = 80
try:
#-- Set up with serial port comms
instrument = InstrumentComms(useSerial=True, baud=19200)
instrument.simpleSerial(debug=DEBUG)
commsType = "serial"
except:
#-- If that failed, try to set up with Ethernet comms
instrument = InstrumentComms(useEthernet=True, ipAddress=ipAddress)
commsType = "Ethernet"
wstdout("\"" + instrument.query(sys.argv[1]) + "\"")
