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NoiseFloorLogger
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added more comments/print outs

This commit is contained in:
Michael Clemens 2020-12-30 00:57:22 +01:00
parent def9d5f151
commit 8ddd87cc49
1 changed files with 23 additions and 14 deletions
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37
NoiseFloorLogger.py
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@ -1,5 +1,4 @@
#!/usr/bin/env python3
import telnetlib
import time
import sys
@ -8,6 +7,8 @@ import os.path
import config as cfg
from airium import Airium
# Read config parameters from config.py
# and store them into variables
host = cfg.host
port = cfg.port
timeout = cfg.timeout
@ -28,20 +29,26 @@ def init_db():
# Connect to the rig via Telnet to rigctld
def connect_rig():
try:
print("Connecting to " + host + ":" + str(port) + "...")
session = telnetlib.Telnet(host, port, timeout)
print("Connection successful.")
return session
except Exception as e:
print("Connecting to " + host + ":" + port + " failed:")
print("Connection failed:")
print(e)
# Query the rig for signal strength (l STRENGTH)
# and write the output into the database
def query_rig(session):
global db_file
# read signal strength from TRX
session.write(b"l STRENGTH\n")
# wait a moment
time.sleep(0.1)
# read the answer
strength = session.read_very_eager().decode("utf-8")
x = strength.replace("\n", "")
# write the value returned from rigctld to the DB
if x:
rrdtool.update(db_file, 'N:%s' % x)
else:
@ -54,6 +61,7 @@ def print_graph(filename,title,time_window):
global db_file
global web_path
# Definition of the graph and the output file
graphv_args = [
web_path+"/"+filename,
'--title', title,
@ -66,6 +74,7 @@ def print_graph(filename,title,time_window):
'DEF:noiselevel='+db_file+':dbm:AVERAGE',
'LINE1:noiselevel#ff0000:"This is a red line"'
]
# generate the output file
rrdtool.graphv(*graphv_args)
# Generate an index.html file containing some graphs
@ -73,12 +82,12 @@ def gen_html():
global web_path
a = Airium()
# Generate the HTML code
a('<!DOCTYPE html>')
with a.html(lang="en"):
with a.head():
a.meta(charset="utf-8")
a.title(_t="Noise Floor")
with a.body():
with a.h3():
a("Last 1 hour")
@ -97,19 +106,19 @@ def gen_html():
with a.div():
a.img(src='4.png', alt='alt text')
html = str(a) # casting to string extracts the value
html = str(a)
# write the html code to disk as index.html
with open(web_path + "/index.html", "w") as html_file:
print(f"{html}", file=html_file)
# Main functionality
init_db()
s = connect_rig()
init_db() # If no DB exists, create one
s = connect_rig() # Connect via Telnet to rigctld
while s:
query_rig(s)
print_graph("1.png","Noise Floor","-1h")
print_graph("2.png","Noise Floor","-4h")
print_graph("3.png","Noise Floor","-12h")
print_graph("4.png","Noise Floor","-24h")
gen_html()
time.sleep(5)
query_rig(s) # Query the signal strength and write it to the DB
print_graph("1.png","Noise Floor","-1h") # create a graph as PNG file
print_graph("2.png","Noise Floor","-4h") # ^
print_graph("3.png","Noise Floor","-12h") # ^
print_graph("4.png","Noise Floor","-24h") # ^
gen_html() # create and write a html file
time.sleep(5) # wait 5 seconds