tspspi

devd ruleset for some devices on FreeBSD

This gist contains some devd rulesets to be used with FreeBSDs devd that assign unique device names to some USB devices. Those are:

• CP2102 based serial interfaces (/dev/cp2102n_$sernum)
• FT232 based serial interfaces (/dev/ft232r_$sernum)
• Atmega2560 Arduino boards (/dev/mega2560_$sernum)

tspspi

import matplotlib.pyplot as plt
import numpy as np
import sys

from time import sleep

from pymso5000.mso5000 import MSO5000
from pyka3005p.ka3005pserial import KA3005PSerial

scanchannel = 2

tspspi

# The same exampel as udptest.py but transmitting
# and receiving from a multicast group

UDP_IP = "239.0.0.16"
UDP_PORT = 1234

if len(sys.argv) < 2:
	print("Missing mode")
	sys.exit(1)

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# Simple and direct overlapping Allan deviation
# for stability analysis in time domain (i.e. "phase" samples)

def overlappingAlanDeviationTimeDomain(timestamps, samples, overlapWindowSize = 2):
    oadev = []
    taus = []
    tau0 = (timestamps[len(timestamps)-1] - timestamps[0]) / (len(timestamps))

    for nLimit in range(2*overlapWindowSize, len(timestamps)):
        tau = tau0 * nLimit

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Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

• Redistributions of source code must retain this list of conditions and the following disclaimer.
• Redistributions in binary form must reproduce this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
• Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without