| # very simple Mersenne prime search. | |
| # AW2016-01-23 | |
| import time | |
| import math | |
| # http://stackoverflow.com/questions/16004407/a-fast-prime-number-sieve-in-python | |
| def prime_sieve(n): | |
| size = n//2 |
| # send email, from e.g. cron-jobs and similar | |
| import smtplib | |
| from email.mime.text import MIMEText | |
| def send_email(me, you, smtp_server, subject, text): | |
| msg = MIMEText(text) | |
| msg['Subject'] = subject | |
| msg['From'] = me | |
| msg['To'] = you | |
| s = smtplib.SMTP(smtp_server) |
| # write data to InfluxDB database | |
| # tags and fields (measurement data) as python dicts | |
| import influxdb | |
| host = 'my.influxdb.server' | |
| port = 8086 | |
| dbname = 'my_db' | |
| def write_dicts(measurement, tagDict, fieldDict): |
| import requests | |
| import time | |
| import syslog | |
| """ | |
| Simple program for testing Ethernet control of: | |
| Mini-Circuits RC-2SP6T-S12 | |
| """ | |
| ip ="192.168.100.30" |
| # AW2018-02-20 | |
| # For testing RF-multiplexer (Arduino Due+ETH-shield) | |
| import requests | |
| import time | |
| import syslog | |
| #ip="192.168.1.177" | |
| ip="192.168.3.30" | |
| def state(mux="A",state=1): |
| """ | |
| TDEV and MTIE masks for ITU Standards | |
| AW2017-2018 | |
| ITU Primary Reference Clock | |
| https://www.itu.int/rec/T-REC-G.811/en | |
| ITU Primary Reference Time Clock | |
| https://www.itu.int/rec/T-REC-G.8272/en | |
| from snmp_helper import snmp_get_oid, snmp_extract | |
| import numpy | |
| # WR-switch management port, fixed ip for delpoyment | |
| ip='192.168.0.10' | |
| # SNMP parameters | |
| community = 'public' | |
| port = 161 |
AW2018-02-21
Install instructions at http://cassandra.apache.org/download/
echo "deb http://www.apache.org/dist/cassandra/debian 311x main" | sudo tee -a /etc/apt/sources.list.d/cassandra.sources.list
curl https://www.apache.org/dist/cassandra/KEYS | sudo apt-key add -
| import bigfloat | |
| import numpy | |
| dds_clk=1.0e9 | |
| ftw_length = pow(2,48) | |
| IF = 100e6/1024.0 # 97656.25 | |
| def ftw_dds(f_hz): | |
| return numpy.round(f_hz*ftw_length/dds_clk,0) |
| # AW2018-12-06 | |
| # very simple auto-courtyard for KiCad footprints | |
| # 1. reads bounding-box of F.fab and pads | |
| # 2. expands by clearance | |
| # 4. writes rectangle to F.CrtYd layer | |
| # 5. writes modified footprint to a new file | |
| import sys | |
| import os | |
| import math |