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Updated Medisana BS444 (markdown)

OliE
2021-03-09 15:18:14 +01:00
parent 91a985b42c
commit 508d8ac126
1 changed files with 15 additions and 4 deletions
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19
Medisana-BS444.md

@@ -28,19 +28,30 @@ First package is send from UUID `0x8a21` as follow:
`1d:80:25:00:fe:80:0f:f4:0d:6a:17:00:ff:01:09:00:00:00:00`
* byte 0: unknown
* byte 0: flag byte
```
Bit 2^5 and Bit 2^6 are the unit.
1d = 0001 1101
3d = 0011 1101
5d = 0101 1101
Bit 5+6: Unit (00=kg, 01=lb, 10=st:lb) also affects weight divider kg=100.
```
The other are maybe something like timePresent, userPresent, measurePresent, scorePresent. But this is just from comparison with other BLE characteristic.
* byte 1-2: weight in little endian / 100
* byte 3-4: unknown
* byte 5-8: unix date/time stamp in little endian starting from year 2010
* byte 9-18: unknown
* byte 9-12: unknown
* byte 13: user id. The scale knows users from 1 to 8. 0xFF = unset/free without user reference. When user != 0xFF the bytes 9+10 are some user scoring based on gender, activity, size and age.
* byte 14-18: unknown
Second package is send from UUID `0x8a22` as follow:
`6f:80:0f:f4:0d:01:21:0c:57:f1:e3:f1:5b:f1:23:f0:00:00:00`
* byte 0: unknown
* byte 0: flag byte
* byte 1-4: unix date/time stamp in little endian starting from year 2010
* byte 5: unknown
* byte 5: user
* byte 6-7: kCal in little endian
* byte 8-9: fat percentage in little endian / 10 and first byte is masked with 0xF0
* byte 10-11: water percentage in little endian / 10 and first byte is masked with 0xF0