batchDeviceDelay : what is the encoding of the delay ?

[SherekhanFR]

Hello,

I am trying to trigger the "rain delay" on Diivoo 2 and 3 ways sprinklers. Watching API calls from the homgar application, I could identify the api (/app/device/sub/batchDeviceDelay) involved but I cannot derive the encoding of the delay.

{
  "hid": {{hid}}, //homeId : OK
  "delay": "{{delay}}" //delay in unknown encoding format
}

couple of encoded values from API calls and decoded values (format : dd/mm/yyyy hh:mm) from homgar application :

d0659315 09/06/2025 22:23
f2689115 08/06/2025 22:35
0a699115 08/06/2025 22:36
66719115 08/06/2025 23:03

I tried to leverage chatgpt to find the pattern without success.

Any clue ?

Thank you,
Sherekhan

[Remboooo]

Interesting puzzle! I could not make heads or tails of it. If we interpret the values as little-endian hex we get the following decimal values:
a: 361851122 = 08/06/2025 22:35
b: 361851146 = 08/06/2025 22:36
c: 361853286 = 08/06/2025 23:03
d: 361981392 = 09/06/2025 22:23

So the value does increase as the date gets later, but not linearly:
a -> b is a 1 minute increment, increases the value by 24
b -> c is a 24 minute increment, increases the value by 2140
c -> d is a 1400 minute increment, increases the value by 128106

There doesn't seem to be a clear separation between days, hour or minute fields either. Maybe with more data points we'd be able to figure this one out?