Buffer Di2 Inputs

[x57qkhwt68-dev]

Hi,

first off, awesome app, purchased through win store.
So far it works flawlessly with R8150.

One little thing that sets me off:
Could you have a look at buffering inputs in your app and trigger them as fast as zwift may read them?

Right now if i am shifting up 3 gears in rapid succession, only the first one goes through, the remaining 2 get dropped.
It would be no issue to have a little delay, it's more important to not lose inputs (=how the zwift click v2 handles multiple presses).

Cheers mate

[jonasbark]

I don't think the issue is the buffering or anything BikeControl related, but it seems the BLE protocol of the Di2 just does not send every event if the keys are pressed in fast succession.

I think this also happens with actual derailleur adjustments (shifting) as well

[x57qkhwt68-dev]

Thanks for the response,

unfortunately I cannot verify the actual behavior immediately, as I received the bike couple weeks ago and put it on the turbo right away 💩

I'll dig into this the upcoming days and come back to you. I wanna check settings in the app too, just in case there's something useful in there.

Until then, happy new year and keep up the great work 🎆🎇

[a123dat57]

could you eventually calculate the difference to the last counter value sent? Not only an "if not equal to" more an
if not equal to, calculate difference. Then send as many clicks as the difference is

[jonasbark]

I thought about this but my Di2 always sends 0xFF as first byte - is yours different?

[a123dat57]

i guess:
Init: => for every difly channel byte 1...5 => Store value in an unsigned byte
keypress => subtract each new value (as unsigned byte) from the last value
=> press button "number of subtraction" result times

[jonasbark]

I checked and I'm not entirely sure what to make of it:

flutter: Initialized D-Fly Channel f0 17 f0 f0
flutter: D-Fly Channel 2 changed from 70 to 23
flutter: Initialized D-Fly Channel f0 48 f0 f0
flutter: D-Fly Channel 2 changed from 23 to 72
flutter: Initialized D-Fly Channel f0 49 f0 f0
flutter: D-Fly Channel 2 changed from 72 to 73
flutter: Initialized D-Fly Channel f0 4a f0 f0
flutter: D-Fly Channel 2 changed from 73 to 74
flutter: Initialized D-Fly Channel f0 4b f0 f0
flutter: D-Fly Channel 2 changed from 74 to 75
flutter: Initialized D-Fly Channel f0 4c f0 f0
flutter: D-Fly Channel 2 changed from 75 to 76
flutter: LogNotification: Buttons released
flutter: Initialized D-Fly Channel f0 1d f0 f0
flutter: D-Fly Channel 2 changed from 76 to 29

it seems to have two count values: one when pressed in a short period (70-76), and then resets after a while to 23-29
not entirely sure what to make of it

[a123dat57]

can you add an timestamp to each line? Maybe then i get an better idea
something like

• 3x fast click, 1sec break, 3x fast click
• 1x click, 1sec delay, 1x click
  maybe they have an "short click counter" and an "long click counter" and they tried so save bytes :-/