La Crosse ws-28xx hacking

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1

I start this new topic…

I bought a La Crosse ws2813 and I’m waiting it arrive at my home.

I discovered that it have poor linux support… so I start hacking.

The only people that start something goot is a guy on this forum on topic WS-2812U-IT

I start from these information to reverse engineering the protocol…

Actually I start publishing my work at my site:
http://dpeddi.com/lct_ws-28xx:lct_ws-28xx_protocol_hacking

Actually I have my dev server offline and I haven’t updated yet all information I own.

Can you help me?

Regards…

2

Interesting
I tried to get the protocol information from the manufacture but failed
so that I could add support to the Mac or Linux
I was able to snoop data, it pours in…got not make much sense out of it
re what you have so far, is that by reverse enginerring the dll file used by heavy weather and decompling heay weather?
interesting
I see there is a preamble, that will help with syncing the data, which arrives in short chunks , and streams to the pc
seemed to

if you get this worked out and get something working on linuc/c++ I would be interested so as to be able to add support for the Mac and Linux versions of WD

3

I’m added reversed c code on my site.

Now it is more comprensible… sometime variable is rappresented as int while should be hex…

Rergards…

4

I’ve implemented some python code and I can get Live indoor and outdoor temperature.

Now I’m testing if I can get Humidity too

5

great progress so far, good work
it looks like it works similar in some respects to the 3600 type station?

6

I don’t hacked ws-3600, but I read open3600 and yes… in some aspect is really similar.

I think they don’t start from beginning for development new product :smiley:

The main difference in ws28xx is the usb implementation.

Pay attention that exists station for eu and us station… It seems that base frequency is hardcoded in software while the usb dongle have a frequency correction written in flash memory that allow using the frequency declared in specifications…
software have to read the flash and apply right frequency.

since ws for eu and us market seems to share same firmware, the differences should be in 24cxx i2c eeprom that should store default measurement values and frequency parameters.