Eve Room 2 about fakegato-history HOT 9 OPEN

From what I could gather so far, the reason PPB values are not shown are because of a different data-stream that's expected (compared to Eve Room v1). This hasn't been implemented and needs to be reverse-engineered first.
I'll see if I can dump some packets later today if someone wants to help out.

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I'm looking at plotting ppq values, did any of the characteristics change between Room 1 and 2?

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Here's a dump of the history service data-stream (HMCatalogue) for the different characteristic IDs from an Eve Room 2 (fyi @ebaauw).

Additionial type refs from Eve Energy #75

11E-
1f00010e270078040a0062d5a3ccf1ea0f3b ; 1f00010e270078040a00204c38eccc3122ed

11C-
; 01ffddc8020000

121-
; e4ece026

116- (signature)
; 6addd502e9aad502e4ece02607010202022202290125012302280100100010e7b90200ffffffff0100 ; 0adfd502e9aad502e4ece02607010202022202290125012302280100100010e8b90200ffffffff0100

117- (data)
; 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 ; 15e7c90200a9ded5027fd4088c163b0000539b0f01

131-
; 0002270003027804040c45563231483141313333393306020010070425b902000b0200000501000204c82500005f0400000000190200051401030f04000000001a0400000000c0020314c10100c20c00007800c8006801d0020c00d200 ; 0002270003027804040c455632314831413133333933060200100704e8b902000b0200000501000204182400005f0400000000190200051401030f04000000001a0400000000c0020314c10100c20c00007800c8006801d0020c00d200

Eve Room 2 Readouts + HM Catalogue Characteristics Overview

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Here's a dissect of the data-stream (117):

15 (L) | d1c90200 (C) | 19abd502 (t)| 7f (entry type) | ec08 2f17 7200 0055 a60f01 (data) |
15 (L) | d2c90200 (C) | 71add502 (t)| 7f (entry type) | fa08 1117 8d00 0053 9e0f01 (data) |
15 (L) | d3c90200 (C) | c9afd502 (t)| 7f (entry type) | fb08 8217 a401 0053 a00f01 (data) |
15 (L) | d4c90200 (C) | 21b2d502 (t)| 7f (entry type) | fa08 8717 5201 0054 a80f01 (data) |

L = Length
C = Counter
t = since reference
7F = Entry type for Room 2 (Eve Room v1 was 0F)

(Refs: https://gist.github.com/simont77/3f4d4330fa55b83f8ca96388d9004e7d)

Signature (ref #75)
6addd502e9aad502e4ece026 (?) | 07 (num types) | 0102 (temp) 0202 (humidity?) 2202 (VOCDensity?) 2901 (?1 byte) 2501 ( 1byte?) 2302 (2bytes) 2801 (1byte?) 00100010e7b90200ffffffff0100 (??)

The dumps above don't seem to align with the screenshots, but here's my assumption:

15 (L) | d4c90200 (C) | 21b2d502 (t)| 7f (entry type) | fa?? | 0887 (2183 / 100 = 21,83C) | 1752 (5970 / 100 = 59,7%) | 0100 54 a80f01 (data) |

These seem to align with the exported logs, except for ppb which I couldn't figure out so far (potentially reported in μg/m3?)

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After looking into this further I believe I cracked it. The prior post contained a lot of false approaches (e.g. no conversion between Big/Little Endian).

Data Example:
Length| Counter | time delta. | Temp | Hum | VOC | ??? | ?????
15 (L) | 79ca0200 | 2930d7027f | 4709 | d014 | 1f00 | 0051 | 910f01
15 (L) | 78ca0200 | d12dd7027f | 4009 | 3215 | 1600 | 0052 | 920f01

Results in (Exported from Eve App):

Converting Top Entry

Converting second entry

Kudos to @HomeKidd , the 4.57 conversion factor seems spot on here.

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@ebaauw @simont77 shouldnt be too difficult now adding this to fakegato and introducing a room2 type and extending addEntry to consume a voc parameter (μg/m3).

I'll see if I can get a PR ready in the near future

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Seems like the last few bytes of the data-stream are important as well, otherwise it won't display anything in the Eve app. Though I can't tell what they are good for (some seems battery history data).

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Some important additional learnings from using this in other projects:
The PPB Values are only shown in conjunction with a temperature sensor which has to implement the Characteristic.TemperatureDisplayUnits Characteristic.

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After looking into this further I believe I cracked it. The prior post contained a lot of false approaches (e.g. no conversion between Big/Little Endian).

Data Example:
Length| Counter | time delta. | Temp | Hum | VOC | ??? | ?????
15 (L) | 79ca0200 | 2930d7027f | 4709 | d014 | 1f00 | 0051 | 910f01
15 (L) | 78ca0200 | d12dd7027f | 4009 | 3215 | 1600 | 0052 | 920f01

Having looked over this, I think the data is translated as follows:

Length| Counter | time delta. | Temp | Hum | VOC | ?? | Battery Level % | Battery Millivolts | ??
15 (L) | 79ca0200 | 2930d7027f | 4709 | d014 | 1f00 | 00 | 51 | 910f | 01
15 (L) | 78ca0200 | d12dd7027f | 4009 | 3215 | 1600 | 00 | 52 | 920f |01

So in the PR you submitted with the data streaming finger print of

								",15 %s%s%s%s%s%s0054 a80f01",

0x54 = battery of 84%
0x0fa8 = battery millivolts of 4008

So based on that, I'm guessing with 100% battery, mv would be 4771 and you could use the data stream encoding as

",15 %s%s%s%s%s%s 00 64 a312 01",

Theory to test?

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