Add Support for 03850 - DeathAdder Essential

[limitedAtonement]

I just got one of these: https://mysupport.razer.com/app/answers/detail/a_id/20332/~/razer-deathadder-essential-%7C-rz01-03850-support-%26-faqs, but it apparently is not supported by this project. It moves very quickly, and I would like to slow it down.

I tried adding a line to razer.c:

    USB_MOUSE(0x1532, 0x0098, &razer_deathadder2013_base_ops), /* 03850, essential */

then running the daemon shows errors:

librazer: razer-deathadder2013: Command 0300/0104 failed with 05
librazer: razer-deathadder2013: Command 0300/0003 failed with 05

and changing any of the settings has no effect on the mouse (except that it stops responding for about a second).

How should I go about trying to add support for this mouse?

[mbuesch]

Hi. Thanks for your question.

The usual way would be to install the Windows driver and sniff and reverse engineer the USB protocol it speaks to your mouse while applying changes.
Then you can compare your findings to what an existing driver does. Usually the protocols are quite similar.

[limitedAtonement]

Thank you for the clarification. That makes sense. I don't have Microsoft Windows, so I don't expect I will be able to perform the necessary steps, but if my situation changes, I'll look into it.