Erlang serial IO

Question

I want to talk to my modem with erlang. It is mounted as /dev/ttyUSB and perfectly understands AT-commands.

Can I read and write from the device with the standard file module?
How about baudrate, bytesize, parity, RTS/CTS, DSR/DTR and the like?
Have you any experiences with tonyg-erlang-serial-1.0? (I am not too convinced of this package as it says in the readme: "This is a port program with erlang driver for serial communication, originally written by Johan Bevemyr in 1996 and sporadically maintained by Tony Garnock-Jones from 2007 onwards."
What is the common practice for serial I/O in erlang?

I've tried `erlang-serial` (along with `gen_serial` http://blog.spearce.org/2004/02/genserial-01-released.html), but couldn't get it to work for me. — Alexey Romanov, Aug 08 '11 at 05:07
https://github.com/systra/erlang-serial (with rebar support) — Eric des Courtis, Oct 11 '13 at 20:59

Eric des Courtis · Answer 1 · 2014-03-04T21:08:48.183

5

Get erlang-serial with rebar support from github.com/systra/erlang-serial. Here is a simple usage example:

Serial = serial:start([{speed,38400},{open,"/dev/ttya"}]),
Serial ! {send, <<"test">>},
receive
    {data,FromOtherSide} ->
        doStuff(FromOtherSide);
    Other ->
        Other
end.

edited Mar 04 '14 at 21:08

answered Oct 11 '13 at 21:07

Eric des Courtis

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Looks promising but I have an install error: https://github.com/tonyg/erlang-serial/issues/14 followed the instructions – quantumpotato Mar 12 '17 at 16:58

score 0 · Answer 2 · edited May 23 '17 at 12:08

0

If you are asking about writing to device files , then you cannot do it using the available file modules in erlang.

You will have to open a port and execute your c/C++ code.

Check if this helps.

edited May 23 '17 at 12:08

Community

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answered Aug 08 '11 at 16:05

Arunmu

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@DownVoter : Care to comment !! – Arunmu Aug 12 '11 at 08:23

score 0 · Accepted Answer · answered Aug 10 '11 at 04:07

0

So there is apparently no serial communication library for erlang. I now had to dig up python again, use pyserial, spawn the python threads from erlang and communicate via stdin.

If anyone knows better, please proof me wrong. I would love to have erlang native serial I/O.

answered Aug 10 '11 at 04:07

Hyperboreus

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Let me know how different it is from using a port to execute a code written in another language ? – Arunmu Aug 12 '11 at 04:03
If you want to use `Erlang` and `Python` together you can take a look at http://erlport.org – hdima Aug 20 '12 at 16:23

Erlang serial IO

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