mirror of https://github.com/merbanan/rtl_433.git
42 lines
1.3 KiB
Plaintext
42 lines
1.3 KiB
Plaintext
# Silverline doorbell
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# A typical x1527 OTP encoder device
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# sends 12 tristate "bits" encoded as 2 bits each and a sync pulse
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decoder {
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name = Silverline-Doorbell,
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modulation = OOK_PWM,
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short = 120,
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long = 404,
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gap = 468,
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reset = 4472,
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bits = 25,
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get = channel:@1:555,
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get = sound:@17:15,
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}
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# The flex spec supports selecting random bits with a getter mask. E.g.
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# in this x1527 tristate example every odd bit is `1` and you want to get
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# 6 bits "channel" from the first 12 bits (discarding every odd bit) use:
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# get=channel:@1:555
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# Effectively this is 11 bits (starting with 1 bit offset to discard the
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# first bit) because the mask is always aligned on the first set bit
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# (i.e. 555, aaa, 000555, ... are identical).
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#
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# Imagine the 25 bits of the transmission as:
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# 1?1?1?1?1?1?1?1?1?1?1?1?1
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# The mask `555` is:
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# 0000 0101 0101 0101
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# aligned to the first set bit
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# 10101010101
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# offset 1 bit (`@1`) it selects like this:
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# 1?1?1?1?1?1?1?1?1?1?1?1?1
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# 10101010101
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# ->
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# ? ? ? ? ? ?
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# resulting in that 6 bit value `??????`.
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#
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# The same way 3 bits "sound" is `get=sound:@17:15` (where `15` here is
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# hex for the 5-bit pattern `10101` -- or use `a8` if you want to left align
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# the pattern in the byte there).
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