How to log Serial data with time stamp?

Question

I have an Arduino sending serial data to the computer. I'm able to view the data using a Serial console. But, I want to be able to log it with time stamp.

I want a ready made script or program that logs serial data with time-stamp automatically without me having to change much or mess with code.

Gilles 'SO- stop being evil' · Accepted Answer · 2013-12-13T09:31:20.963

7

You can use the ts program from moreutils to add a timestamp to each line.

{ echo foo; sleep 1; echo bar; } | ts
Dec 13 01:07:23 foo
Dec 13 01:07:24 bar

To read from the serial port and output to a file:

ts </dev/ttyS0 >arduino.log

(Replace /dev/ttyS0 by the right path for the serial port device, .)

edited Dec 13 '13 at 09:31

answered Dec 13 '13 at 01:07

Gilles 'SO- stop being evil'

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It caused cyclic resets of my Arduino which is probably caused by cyclic open / close port action and changing DTR line, connected to RESET. – Jarek Jan 21 '23 at 12:45

score 5 · Answer 2 · answered Jan 30 '14 at 17:16

5

I would recommend http://elinux.org/Grabserial.
And formating ts output is a plus, it adds more time precission.

ts [%H.%M.%.S]

answered Jan 30 '14 at 17:16

kikeenrique

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Thanks! Grabserial offers a lot more customization, including the ability to show offests and differences with different base times, restarting the logging based on patterns in the output, modifying serial line settings, etc. – nealmcb Oct 15 '19 at 00:29

score 0 · Answer 3 · edited Aug 28 '22 at 21:37

0

Try

sudo cat /dev/ttyUSB0  | ts >>arduino.log

or

sudo stdbuf -o0 cat /dev/ttyUSB0 | ts >>ttyS0.log

edited Aug 28 '22 at 21:37

G-Man Says 'Reinstate Monica'

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answered Aug 28 '22 at 20:28

Geo

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(1) Please don’t post code-only answers; rather, *explain* the essence of your answer. (2) Why do you propose using `sudo`? Don’t use `sudo` by default; use it only when you need to, and you *understand **why*** you need it. (3) Why use `cat`, especially in your first answer? Your `cat /dev/ttyUSB0 | ts >>arduino.log` command is equivalent (except for the tty name and the `>>`) to the `ts arduino.log` command which was given almost nine years ago. (4) What’s the benefit of using `stdbuf` here, and what does `-o0` do? – G-Man Says 'Reinstate Monica' Aug 28 '22 at 21:38

score 0 · Answer 4 · answered Sep 14 '22 at 06:34

0

Try https://tio.github.io - it supports logging with various timestamp formats. For example:

tio /dev/ttyUSB0 --log --timestamp --timestamp-format=24-hour

answered Sep 14 '22 at 06:34

Martin

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How to log Serial data with time stamp?

4 Answers4