blob: 6c978e0aca5ca19efea59c0c51986feef51935f5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
#!/usr/bin/env python3
# SPDX-License-Identifier: LGPL-3.0-or-later
# Copyright (C) 2021 Daniel Thompson
import sys
def parse_record(view):
'''Consume a single set of samples and format as a line for a CSV file.'''
# Verify synchronization
assert(view[0] == 0xffff)
# Extract the timestamp and format it in ISO 8601 format
(YY, MM, DD, hh, mm, ss) = view[1:7]
print(f'"{YY:04}{MM:02}{DD:02}T{hh:02}{mm:02}{ss:02}"', end='')
# Consume data until we reach the synchronization token
offset = 8
while offset < len(view) and view[offset] != 0xffff:
print(f',{view[offset]}', end='')
offset += 1
# Close the current record and return
print('')
return offset
# Open and read the file named in our first argument
with open(sys.argv[1], 'rb') as f:
rawdata = f.read()
# Re-interpret the raw data as an array of 16-bit values
view = memoryview(rawdata)
data = view.cast('H')
# Process the data one record at a time
offset = 0
while offset < len(data):
offset += parse_record(data[offset:])
|
