31D9/31DA: Non-evohome device, CVE-RF (ventilation) about ramses_protocol HOT 4 CLOSED

Hey, this is very interesting! Oddly, I have a ventilation system at home, so I already have the following in https://github.com/zxdavb/evohome_rf/tree/add_state (see below).

In my case, the devices are 30: (the mechanical vent) and 32: (Humidity sensor, Switch).

First thing I'm going to do is parse the payloads!

@parser_decorator
def parser_31d9(payload, msg) -> Optional[dict]:
    assert len(payload) / 2 == 17  # usu: I 30:-->30:, with a seq#!
    assert payload[:2] == "21"  # domain
    assert payload[2:] == "00FF0000000000000000000000000000"

    return {
        "zone_idx" if int(payload[:2], 16) < 12 else "domain_id": _id(payload[:2]),
        "unknown_0": payload[2:],
    }


@parser_decorator
def parser_31da(payload, msg) -> Optional[dict]:  # UFH HCE80 (Nuaire humidity)
    assert len(payload) / 2 == 29  # usu: I CTL-->CTL
    assert payload[:2] == "21"  # domain

    return {
        "zone_idx" if int(payload[:2], 16) < 12 else "domain_id": _id(payload[:2]),
        "relative_humidity": _cent(payload[10:12]),
        "unknown_0": payload[2:10],
        "unknown_1": payload[12:],
    }

from ramses_protocol.

And decoded, they are:

20:001414 |  20:001414 |  I | message_31da     | 00EF0... || {'zone_idx': '00', 'relative_humidity': 2.39, 'unknown_0': 'EF007FFF', 'unknown_1': 'EF7FFF7FFF7FFF7FFFF000EF0251000000EFEF7FFF7FFF'}
20:001414 |  20:001414 |  I | message_31d9     | 00065... || {'zone_idx': '00', 'unknown_0': '06510020202020202020202020202000'}
20:001414 |  20:001414 |  I | device_info      | 00000... || {'description': 'CVE-RF', 'firmware': None, 'manufactured': '2015-05-12', 'unknown': '000001001B221201FEFF'}

from ramses_protocol.

@gitkomodo Just to clarify something said above - some packets are 'known', just not documented in this wiki, yet. In addition, packets may be 'known', but not yet fully understood - the authorative reference might be here (this is missing only 0404 and 0006 parsers.

I have been too busy on other projects to finish updating the wiki...

What code are you running to collect your packets? Is there any chance you could send me 24h of a packet log using https://github.com/zxdavb/evohome_rf? Especially of the packets to/from 20: devices? There is another related packet, 31E0 (and possibly others).

If so, then I can suggest the bleeding_edge branch. If you're collecting them via another tool, I would still like to see them - maybe you could reformat them into the 'standard' format:

2020-05-13T01:16:45.808427 095 RQ --- 18:013393 01:145038 --:------ 1F09 001 00

... or as near as you can get?

from ramses_protocol.

Closing - these packets (31D9, 31DA) are better understood, but still a WIP.

from ramses_protocol.