FreeDATA/tnc/helpers.py

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Fri Dec 25 21:25:14 2020
@author: DJ2LS
"""
import time
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import crcengine
import static
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def wait(seconds):
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timeout = time.time() + seconds
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while time.time() < timeout:
time.sleep(0.01)
return True
def get_crc_8(data):
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"""
Author: DJ2LS
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Get the CRC8 of a byte string
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param: data = bytes()
"""
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crc_algorithm = crcengine.new('crc8-ccitt') # load crc8 library
crc_data = crc_algorithm(data)
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crc_data = crc_data.to_bytes(1, byteorder='big')
return crc_data
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def get_crc_16(data):
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"""
Author: DJ2LS
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Get the CRC16 of a byte string
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param: data = bytes()
"""
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crc_algorithm = crcengine.new('crc16-ccitt-false') # load crc16 library
crc_data = crc_algorithm(data)
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crc_data = crc_data.to_bytes(2, byteorder='big')
return crc_data
def get_crc_32(data):
"""
Author: DJ2LS
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Get the CRC32 of a byte string
param: data = bytes()
"""
crc_algorithm = crcengine.new('crc32') # load crc16 library
crc_data = crc_algorithm(data)
crc_data = crc_data.to_bytes(4, byteorder='big')
return crc_data
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def add_to_heard_stations(dxcallsign, dxgrid, datatype, snr, offset, frequency):
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# check if buffer empty
if len(static.HEARD_STATIONS) == 0:
static.HEARD_STATIONS.append([dxcallsign, dxgrid, int(time.time()), datatype, snr, offset, frequency])
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# if not, we search and update
else:
for i in range(0, len(static.HEARD_STATIONS)):
# update callsign with new timestamp
if static.HEARD_STATIONS[i].count(dxcallsign) > 0:
static.HEARD_STATIONS[i] = [dxcallsign, dxgrid, int(time.time()), datatype, snr, offset, frequency]
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break
# insert if nothing found
if i == len(static.HEARD_STATIONS) - 1:
static.HEARD_STATIONS.append([dxcallsign, dxgrid, int(time.time()), datatype, snr, offset, frequency])
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break
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# for idx, item in enumerate(static.HEARD_STATIONS):
# if dxcallsign in item:
# item = [dxcallsign, int(time.time())]
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# static.HEARD_STATIONS[idx] = item
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'''
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def setup_logging():
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"""
Author: DJ2LS
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Set the custom logging format so we can use colors
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# https://stackoverflow.com/questions/384076/how-can-i-color-python-logging-output
# 'DEBUG' : 37, # white
# 'INFO' : 36, # cyan
# 'WARNING' : 33, # yellow
# 'ERROR' : 31, # red
# 'CRITICAL': 41, # white on red bg
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"""
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logging.basicConfig(level=logging.INFO,encoding='utf-8',format='%(asctime)s.%(msecs)03d %(levelname)s:\t%(message)s',datefmt='%H:%M:%S',handlers=[logging.FileHandler("FreeDATA-TNC.log"), logging.StreamHandler()])
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logging.addLevelName(logging.DEBUG, "\033[1;36m%s\033[1;0m" % logging.getLevelName(logging.DEBUG))
logging.addLevelName(logging.INFO, "\033[1;37m%s\033[1;0m" % logging.getLevelName(logging.INFO))
logging.addLevelName(logging.WARNING, "\033[1;33m%s\033[1;0m" % logging.getLevelName(logging.WARNING))
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logging.addLevelName(logging.ERROR, "\033[1;31m%s\033[1;0m" % "FAILED")
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#logging.addLevelName( logging.ERROR, "\033[1;31m%s\033[1;0m" % logging.getLevelName(logging.ERROR))
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logging.addLevelName(logging.CRITICAL, "\033[1;41m%s\033[1;0m" % logging.getLevelName(logging.CRITICAL))
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logging.addLevelName(25, "\033[1;32m%s\033[1;0m" % "SUCCESS")
logging.addLevelName(24, "\033[1;34m%s\033[1;0m" % "DATA")
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'''