mirror of https://github.com/merbanan/rtl_433.git
80 lines
4.2 KiB
Plaintext
80 lines
4.2 KiB
Plaintext
# Decoder for Hornbach awning remotes.
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#
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# The remote is labeled MSRC-SAL and has article number 6196477 printed on the
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# label [0]. On the inside there's a chip with its markings removed, but it
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# looks like an off-the-shelf, generic remote. There are multiple LED positions,
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# where only one is soldered. There's unused keys, an unlabeled one on the
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# front, which does not even emit an RC signal, and one on the back, 'time',
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# without even a button behind it, nor was there a spot on the PCB for a key.
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#
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# There is also another sort of remote, which includes a wind-sensor [1].
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# It is assumed that it functions just like a remote, taking light and wind
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# into account to send the close signal.
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#
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# It should probably be mentioned, that Hornbach itself is likely not the
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# manufacturer itself.
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#
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# The remote operates on a 433.92 MHz frequency. The PCB is labeled
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# 'DC104-HD V1.3' and seems to be produced in 2019-07-04.
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#
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# Hornbach awnings use OOK_PWM encoding.
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# - 0 is defined as a 372 µs pulse followed by a 744 µs gap.
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# - 1 is defined as a 744 µs pulse followed by a 372 µs gap.
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# - reset is defined as a 1116 gap followed by a 7812 µs gap.
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# - sync is defined as a 4836 µs pulse, followed by a 1488 µs gap.
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#
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# > __Note:__ It is unclear if the last space (gap) of a bit is always extended
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# to a certain length, or if this is an additional delimiter. One could argue
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# the reset/delimiter is a 8928 µs gap.
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#
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# Transmissions starts with a sync and gap pulse, followed by 40 bits, closed
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# off with a gap and reset pulse.
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# These seem to be repeated at least 4 times, depending on how long the button
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# is kept pressed. The exception is the light, which is never repeated more than
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# 4 times, which is also visible on the remotes activity LED.
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#
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# Possible packet layout:
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# It starts with 32 bits Remote ID, possibly a combination of vendor + function
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# as commonly seen in infra-red remote controls. These are likely remote-unique.
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# When programming the awning to match a new/different remote, one is expected
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# to press `P2` during power-on, which the awning will acknowledge with some
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# beeps. Since the code does not change when pushing `P2`, this is a fair
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# assumption, but an assumption still.
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#
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# Following the remote ID we have a single byte that indicates the button.
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#
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# | Button | Byte | Bits | Function |
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# |----------|------|------------------|-------------------------------------|
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# | P2 | 33 | 0 0 1 1 0 0 1 1 | Program/Learn remote |
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# | MODE | 3e | 0 0 1 1 1 1 1 0 | Unknown/Undocumented |
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# | STOP | aa | 1 0 1 0 1 0 1 0 | Stop awning at current position |
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# | DOWN rel | c3 | 1 1 0 0 0 0 1 1 | Release of button DOWN |
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# | DOWN | cc | 1 1 0 0 1 1 0 0 | Open awning (via internal endstop) |
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# | UP rel | e1 | 1 1 1 0 0 0 0 1 | Release of button UP |
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# | UP | ee | 1 1 1 0 1 1 1 0 | Close awning (via internal endstop) |
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# | LIGHT | f0 | 1 1 1 1 0 0 0 0 | Light high/low/off |
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#
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# The UP/DOWN buttons are the only buttons that sends a release event when the
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# key is released on the remote. If the button is kept pressed until the remote
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# stops the signal, the UP/DOWN (release) key is not sent. Interestingly the
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# release events is the inverse of the last nibble of the press event. They are
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# ignored by the awning, which makes sense, as it is already moving.
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frequency 433.92M
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decoder {
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name = MSRC-SAL,
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modulation = OOK_PWM,
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bits = 40,
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short = 372,
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long = 744,
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reset = 7812,
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sync = 4836,
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gap = 1488,
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get = RUID:@0:{32}:%x,
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get = button:@32:{8}:[0x33:P2 0x3E:MODE 0xAA:STOP 0xC3:DOWN_(release) 0xCC:DOWN 0xE1 UP_(release) 0xEE:UP 0xF0:LIGHT],
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}
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# [0]: https://www.hornbach.nl/p/reserveonderdeel-afstandsbediening-voor-zonnescherm-6145050-6145051-6145052-10178611-10178638-10178639-10178640-6823732-6823733-6823734-10461615-104961614-10328334-10328335-10468366-10468367-10468368-10468369-10468370/6196477/
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# [1]: https://www.hornbach.de/p/windwaechter-fuer-motor-markisen-weiss-inkl-1-5-m-netzanschlussleitung/10178681/
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