Commit 2397b7d5 authored by Federico Asara's avatar Federico Asara

Implementation of a two-tone waveform.

parent 4ba4dbe9
import Waveform
from Utilities import *
from numpy import *
import Pyro4
import Pyro4.util
import sys
import commands
class TTWaveform(Waveform.Waveform):
def get(self, what):
return self.__getattribute__(what)
def set(self, what, how):
self.__setattr__(what, how)
_parameters = {'frequency':['Frequency (1)', 'Frequency of the first sinewave, in HZ', float(5e6), float],
'ratio':['Ratio', 'Ratio between the frequency of the second sinewave and the one', 6./5., float],
'amplitude':['Amplitude', 'Amplitude of each sinewave, in Vpp', 1., float],
'dc':['DC Compoment', 'DC component of the whole waveform, in Vpp', 0., float]}
def __init__(self, *args, **kwargs):
Waveform.Waveform.__init__(self, *args, **kwargs)
def generate(self, sampleRate, samples, nbits, fsr):
f1, f2 = self.frequency, self.frequency * self.ratio
A = self.amplitude
C = self.dc
t = arange(samples, dtype=float)/sampleRate
s = A*sin(2*pi*f1*t) +A*sin(2*pi*f2*t) +C
lsb = fsr/(2**nbits)
return (s/lsb).astype(int)
def scale(self, factor):
"""Multiply the frequency by factor"""
self.frequency *= factor
return self
name = 'Two Tones Waveform'
target = TTWaveform
def launch():
g = target()
hn = commands.getoutput('hostname')
daemon = Pyro4.Daemon(host = hn)
myUri = daemon.register(g)
ns=Pyro4.locateNS()
ns.register("TTSine", myUri)
daemon.requestLoop()
if __name__ == '__main__':
launch()
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