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+--- Thread: Lumin D2 with Expert Pro CI (/Thread-Lumin-D2-with-Expert-Pro-CI)
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RE: Lumin D2 with Expert Pro CI - ogs - 21-Jan-2023
Yes I know how CRC works. What I meant was: no one has figured out how Devialet uses CRC in configuration files. If one edits a file it changes and a new CRC is needed. What part of the CRC string does one add to a file to make it work? Is something added to or removed from the file while generating the CRC? Lots of stumbling blocks here...
RE: Lumin D2 with Expert Pro CI - hamster28 - 01-Aug-2023
(21-Jan-2023, 12:04)ogs Wrote: Yes I know how CRC works. What I meant was: no one has figured out how Devialet uses CRC in configuration files. If one edits a file it changes and a new CRC is needed. What part of the CRC string does one add to a file to make it work? Is something added to or removed from the file while generating the CRC? Lots of stumbling blocks here...
Hi, i have figured out how Devialet calculates the CRC.
Here is a NodeJS function which does the job: "calcConfigFilesCRC()"
https://github.com/Hamster128/iTunesRemote/blob/master/devialet.js
RE: Lumin D2 with Expert Pro CI - daniel.avasilichioaei - 01-Aug-2023
(01-Aug-2023, 17:29)hamster28 Wrote:(21-Jan-2023, 12:04)ogs Wrote: Yes I know how CRC works. What I meant was: no one has figured out how Devialet uses CRC in configuration files. If one edits a file it changes and a new CRC is needed. What part of the CRC string does one add to a file to make it work? Is something added to or removed from the file while generating the CRC? Lots of stumbling blocks here...
Hi, i have figured out how Devialet calculates the CRC.
Here is a NodeJS function which does the job: "calcConfigFilesCRC()"
https://github.com/Hamster128/iTunesRemote/blob/master/devialet.js
Wow... This is something impressive and useful. This information should be put in a dedicated thread.
Do you have any instructions for use for novice users?
RE: Lumin D2 with Expert Pro CI - hamster28 - 01-Aug-2023
(01-Aug-2023, 17:40)daniel.avasilichioaei Wrote:(01-Aug-2023, 17:29)hamster28 Wrote:(21-Jan-2023, 12:04)ogs Wrote: Yes I know how CRC works. What I meant was: no one has figured out how Devialet uses CRC in configuration files. If one edits a file it changes and a new CRC is needed. What part of the CRC string does one add to a file to make it work? Is something added to or removed from the file while generating the CRC? Lots of stumbling blocks here...
Hi, i have figured out how Devialet calculates the CRC.
Here is a NodeJS function which does the job: "calcConfigFilesCRC()"
https://github.com/Hamster128/iTunesRemote/blob/master/devialet.js
Wow... This is something impressive and useful. This information should be put in a dedicated thread.
Do you have any instructions for use for novice users?
Here is a cooking recipe:
1) install nodejs (https://nodejs.org/en/download)
2) download my repository from github https://github.com/Hamster128/iTunesRemote/archive/refs/heads/master.zip
3) extract zip
4) execute "npm i" inside the directory
5) copy your modified dp_cfg.txt in the projects directory
6) start calc_crc.cmd
RE: Lumin D2 with Expert Pro CI - daniel.avasilichioaei - 01-Aug-2023
(01-Aug-2023, 18:06)hamster28 Wrote: Here is a cooking recipe:
1) install nodejs (https://nodejs.org/en/download)
2) download my repository from github https://github.com/Hamster128/iTunesRemote/archive/refs/heads/master.zip
3) extract zip
4) execute "npm i" inside the directory
5) copy your modified dp_cfg.txt in the projects directory
6) start calc_crc.cmd
Thank you.
RE: Lumin D2 with Expert Pro CI - Delija - 02-Aug-2023
It appears it does work - I've tried several test examples.
This is really great news. It's BIG - it should be put as new sticky thread!
With this tool (basically with the knowledge how exactly the CRC is calculated - CRC16-CCITT) and proper "cookbook" we are not any more fully dependent from Devialet and it's web configurator and also from the future of the company.
Someone could even implement a proper offline configurator - with fixed known issues of online configurator.
@hamster28
Thank you very much! We own you a large amount of beer
RE: Lumin D2 with Expert Pro CI - ogs - 09-Aug-2023
(01-Aug-2023, 17:29)hamster28 Wrote: Hi, i have figured out how Devialet calculates the CRC.
Here is a NodeJS function which does the job: "calcConfigFilesCRC()"
https://github.com/Hamster128/iTunesRemote/blob/master/devialet.js
Thanks! I've just seen your post. Much appreciated!