FPC1000_viewer.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
from pyqtgraph.Qt import QtGui, QtCore
import argparse, numpy, pyqtgraph, socket, sys
#==============================================================================
# Default filename
IP = '192.168.0.11'
PORT = 5555
#==============================================================================
def parse():
"""
Specific parsing procedure for Allan Deviation plotting tool.
:returns: populated namespace (parser)
"""
parser = argparse.ArgumentParser(description = 'R&S FPC1000 spectrum viewer',
epilog = 'Example: \'./FPC1000_viewer.py -ip \'192.168.0.2\' -p 1234\' plot current spectrum from given device')
parser.add_argument('-ip',
action='store',
dest='ip',
default=IP,
help='device IP (default '+IP+')')
parser.add_argument('-p',
action='store',
dest='port',
default=PORT,
help='device port (default '+str(PORT)+')')
args = parser.parse_args()
return args
#==============================================================================
def send(sock, command):
sock.send("%s\n"%command)
#==============================================================================
def read(sock):
ans = ''
nb_data_list = []
nb_data = ''
try:
while ans != '\n':
ans = sock.recv(1)
nb_data_list.append(ans) # Return the number of data
list_size = len(nb_data_list)
for j in range (0, list_size):
nb_data = nb_data+nb_data_list[j]
return nb_data
except socket.timeout:
print "Socket timeout error when reading."
#==============================================================================
def get_spectrum(sock):
send(sock, 'FREQ:STAR?')
x1 = read(sock)
x1 = float(x1.replace('\n',''))
send(sock, 'FREQ:STOP?')
x2 = read(sock)
x2 = float(x2.replace('\n',''))
send(sock, 'TRAC?')
y = read(sock)
y = numpy.array(y.replace('\n','').split(','), dtype='float')
x = numpy.linspace(x1, x2, len(y))
return (x, y)
#==============================================================================
def main():
"""
Main script
"""
# Parse command line
args = parse()
# ip
ip = str(args.ip)
# port
port = int(args.port)
try:
sock = socket.socket(socket.AF_INET,socket.SOCK_STREAM,socket.IPPROTO_TCP)
sock.settimeout(10.0)
sock.connect((ip, port))
app = QtGui.QApplication([])
win = pyqtgraph.GraphicsWindow(title='Basic FPC1000 viewer (%s:%i)'%(ip, port))
pyqtgraph.setConfigOptions(antialias=True)
global curve, ptr, p1
p1 = win.addPlot(title="Spectrum")
curve = p1.plot(pen='y')
ptr = 0
def update():
global curve, ptr, p1
(x_data, y_data) = get_spectrum(sock)
curve.setData(x = x_data, y = y_data)
if ptr == 0:
p1.enableAutoRange('xy', False) ## stop auto-scaling after the first data set is plotted
ptr += 1
timer = QtCore.QTimer()
timer.timeout.connect(update)
timer.start(500)
if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
QtGui.QApplication.instance().exec_()
except:
pass
## Start Qt event loop unless running in interactive mode or using pyside.
if __name__ == '__main__':
main()