Controlling the MixNV rf generator

mixnv.py

# Controlling the MixNV (Windfreak Technologies) rf synthesizer
# Amar Vutha
# version 1
import serial
import numpy as np
import time

usbPort = "/dev/ttyACM0"
sleepTime = 0.01

class Synth:
    def __init__(self,portname):
        self.usbStream = serial.Serial(portname,timeout=1)

    def status(self):
        #time.sleep(sleepTime)
        self.usbStream.write("f?")
        print "Frequency: ",self.usbStream.readline()[:-2],"MHz"
        self.usbStream.write("a?")
        print "Amplitude: ",self.usbStream.readline()
        
    def frequency(self,f):
        self.usbStream.write("f"+`f`)
        time.sleep(sleepTime)
        #self.usbStream.write("f?")
        #print self.usbStream.readline()[:-2]
        
    def amplitude(self,n):
        self.usbStream.write("a"+`n`)
        time.sleep(sleepTime)
        #self.usbStream.write("a?")
        #print self.usbStream.readline()
    
    def scan(self,start,stop,numsteps):
        try:
            while True:
                for f in np.linspace(start,stop,numsteps):
                    self.frequency(f)
                    time.sleep(sleepTime)

        except KeyboardInterrupt: return