Quick script to check no CAN messages were dropped - see https://github.com/hardbyte/python-can/pull/1127

check_csv.py

#!/usr/bin/env python
import csv
import base64
import re
import struct

last_counter = [None, None]
lines = 0

with open("spammer.txt") as f:
    for l in f:
        lines += 1
        m = re.match(r'Timestamp: *([\d\.]+) *ID: ([\da-f]+) *([S]) (Rx)? *DLC: *(\d+) *([\da-f ]{23}) *Channel: (\d)', l)
        if m:
            timestamp, canid, idtype, _, dlc, data, channel = m.groups()
            timestamp = int(float(timestamp) * 1e6)  # to microseconds
            dbytes = bytes.fromhex(data)
            extended = idtype != 'S'  # bit hacky
            canid = int(canid, 16)
            channel = int(channel)
            # print(timestamp, channel, dbytes.hex())
            counter = struct.unpack("<Q", dbytes)[0]
            if last_counter[channel] is not None:
                if last_counter[channel] + 1 != counter:
                    print(f"Line {lines}. Channel {channel}. Expected counter {hex(last_counter[channel]+1)}, got {hex(counter)}")
            last_counter[channel] = counter

print(f"Done! {lines} lines. Final counters {last_counter}")