mirror of
https://github.com/fhem/fhem-mirror.git
synced 2025-01-31 06:39:11 +00:00
23 lines
619 B
Plaintext
23 lines
619 B
Plaintext
|
2009-09-12bn
|
||
|
|
|
||
|
|
This document describes the protocol for the brightness sensor BS.
|
||
|
|
|
||
|
|
Datagram is of FS20 sensor message type:
|
||
|
|
81 0c 04 ?? 01 01 a0 01 a5 cf xx 00 yy zz
|
||
|
|
|
||
|
|
81: begin of FS20/FHT communication
|
||
|
|
0c: remaining length of datagram (12 bytes)
|
||
|
|
04: type of datagram
|
||
|
|
??: checksum
|
||
|
|
01 01 a0 01: FS20 fix sequence, always 01 01 a0 01
|
||
|
|
a5 cf: FS20 housecode, always a5cf for brightness sensor BS
|
||
|
|
xx: sensor #
|
||
|
|
00: always 00
|
||
|
|
yy zz: code, see below
|
||
|
|
|
||
|
|
yy zz
|
||
|
|
76543210 76543210
|
||
|
|
| ++ ++++++++----- 10 bit resolution brightness value (0..1023)
|
||
|
|
|
|
||
|
|
+------------------- 0x20 always 1 (= value byte follows)
|