Re: Firewire Audio Interface

Re: Firewire Audio Interface

[Takashi Sakamoto]

Hi,
(C.C.ed to alsa-devel)

On Tue, Feb 21, 2023 at 10:21:14AM -0500, mj@mj wrote:
> Hello Takashi!
> I came across your name when trying to find software to make a TC
> Konnekt 6 work in OSX Big Sur.
> TC has abandoned the Konnekt series.
> I saw this Github entry that I think is from you?
> [1]https://github.com/alsa-project/snd-firewire-ctl-services/blob/master/README.rst
> I wanted to ask…is this your project? and would it allow me to use the
> Konnekt with OSX 64-bit?

I maintain the repository.

Linux kernel has driver stack for audio and music unit in IEEE 1394 bus.
I maintain the driver stack as well. For example, you can see backport
drivers from mainline Linux kernel:

* https://github.com/takaswie/snd-firewire-improve/

The repository you found is supplemental one. It provides user space
service program to configure DSP functions such as channel strip effects.

Besides, they are available in Linux only. As long as I know, no one
work to develop craft drivers in MacOS for your device.


P.S. I think you use 'Desktop Konnekt 6' or 'Konnekt 8'.

Takashi Sakamoto

Re: Firewire Audio Interface

[Takashi Sakamoto]

Hi,
(C.C.ed to alsa-devel)

On Wed, Feb 22, 2023 at 11:51:23AM -0500, mj@mj wrote:
> Hey man thanks so much for the reply!
> 
> Why TC put the phantom switch in the software instead of on the
> hardware unit I can’t figure out!
> 
> I think I’m just going to use it a 2-in 2-out interface without
> the phantom.
> 
> A friend of mine looked at the circuit board and told me it
> would be too difficult to put a switch for the phantom power in it.
> 
> Thanks again for the reply!

If it is Desktop Konnekt 6, node offset 0x'ffff'e0a0'103c has the 32 bit
value to express the state of phantom powering. If it is 0, disabled, else
enabled. Quadlet write asynchronous transaction can change the state, but
I have never used MacOs to operate any node in IEEE 1394 bus.

I know some developer and user for the craft driver; e.g.

* Re: [alsa-devel] Tascam Coding Inquiry
  * https://lore.kernel.org/alsa-devel/20200108095430.GA16741@workstation/

I think it your help to contact to them. Especially Paul Neyrinck[1] seems
to complete his work for the craft driver of Digidesign Digi 002/003
family in MacOS. They are different hardware from yours, while he will
help you to execute the simple read/write transaction to a certain
offset of it.


[1] https://neyrinck.com/

Regards

Takashi Sakamoto