RME Totalmix fx replacement for linux

Sojuzstudio · February 22, 2024, 9:12am

An interesting project related to the RME Fireface 802 and others

Fireface 802 support

opened 03:09AM - 18 Feb 24 UTC

@huddx01 and sjzstudio on the RME forum have kindly provided CC-mode USB descrip…tors for the 802. It seems to be consistent with the UCX II, so hopefully shouldn't be too difficult to support. My only concern is the vendor-specific interface with bulk endpoints. sjzstudio also noted that when dumping from the second MIDI port, they saw ``` 16:1 System exclusive F0 00 20 0D 10 00 00 12 00 78 0B F7 ``` This seems to follow the same SysEx packet format: manufacturer ID 00 20 0Dh, device ID 10h, sub ID 00h indicating register change, and then a 5 byte payload `00 12 00 78 0B`, which is `0x3f000900` after decoding. This means "register 0x3f00 set to 0x0900". On the UCX II, register 3F00 is only written from the host to the device and is used to get the device to tell us about any registers that changed, I didn't ever see it sent from the device to the host. So something is a bit different here. My next question is does the 802 ever send any different messages, or is it always the same exact bytes `F0 00 20 0D 10 00 00 12 00 78 0B F7`?

laex · February 22, 2024, 1:42pm

Thanks for bringing this to my attention! I’m trying to help over there (as far as I can skill-wise)…

system · March 21, 2024, 1:42pm

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