Search found 12 matches

by osch
Thu Oct 04, 2018 1:53 pm
Forum: Getting started
Topic: Why aren't my compile options working?
Replies: 3
Views: 19919

Re: Why aren't my compile options working?

What george said is correct. You cannot trust xTimeComposer highlighting.
by osch
Mon Aug 13, 2018 3:53 pm
Forum: Q&A
Topic: Problem with XMOS Stereo driver and 32-bit
Replies: 4
Views: 11280

Re: Problem with XMOS Stereo driver and 32-bit

Hi. Disclaimer: Not an audio developer. Believe you may need to license the enhanced driver package from this company: https://www.thesycon.de/eng/usb_audiodriver.shtml Request their demo copy of the driver to validate this understanding. Fairly confident that other developers have had to follow th...
by osch
Thu Aug 09, 2018 12:58 pm
Forum: Q&A
Topic: Problem with XMOS Stereo driver and 32-bit
Replies: 4
Views: 11280

Problem with XMOS Stereo driver and 32-bit

I was told by xmos-support to post this here, hopefully someone has some insight about this. We have the production version of the XMOS Stereo driver, version 4.13.0 ST. On the overview of the different drivers it states that this driver should support 16,24 and 32 bit sample depth(http://www.xmos.c...
by osch
Tue May 08, 2018 11:43 am
Forum: Q&A
Topic: Delay all cores from starting (xcore-200)
Replies: 2
Views: 2471

Re: Delay all cores from starting (xcore-200)

The par{} construct does not have be used in the main routine. Reference: http://www.xcore.com/viewtopic.php?t=3407 Can you shift the par construct to another core? Then inside the main routine, perform your conditional check and wait for the condition to be TRUE -> then call the par{} construct in...
by osch
Mon May 07, 2018 11:11 am
Forum: Q&A
Topic: Delay all cores from starting (xcore-200)
Replies: 2
Views: 2471

Delay all cores from starting (xcore-200)

Hi! I am trying to find a way to stall all the tasks/cores in the usb reference design from starting without rewriting too much of main(). I want the xmos to start up with a function on both tiles that check for a certain condition before they return and let the audio-cores start up. Is this even po...
by osch
Tue Apr 24, 2018 11:15 am
Forum: USB Audio
Topic: USB Audio 2.0: Device to host volume control
Replies: 7
Views: 10874

Re: USB Audio 2.0: Device to host volume control

The answer will probably be in the depths of the UAC2 spec but *I think* that what you are asking is not supported. Everything is host-centric and so the host is not expecting or checking the volume for device side changes. Sure, you could close the loop using HID.. That would make sense. Possibly ...
by osch
Fri Apr 20, 2018 12:24 pm
Forum: USB Audio
Topic: USB Audio 2.0: Device to host volume control
Replies: 7
Views: 10874

USB Audio 2.0: Device to host volume control

Hi! I am working on a custom board used for USB audio(reference design 6.15.2). I want to be able to use the device to control Windows volume using absolute values. I have gotten it to work the other way around with the "OUTPUT_VOLUME_CONTROL" and that works great, but now i want to contro...
by osch
Wed Apr 18, 2018 8:46 am
Forum: Q&A
Topic: Problem with DFU and custom flash
Replies: 0
Views: 5759

Problem with DFU and custom flash

Hi! Sorry if this is posted in the wrong section, i was a bit unsure where it would be best.. We have a custom board with a non-standard flash chip that we want to be able to upgrade via DFU. Based on this thread: http://www.xcore.com/viewtopic.php?f=26&t=6448 i edited the record for a existing ...
by osch
Tue Feb 13, 2018 10:56 am
Forum: Development Tools and Programming
Topic: "set_core_high_priority_on" uses up a core in xtimecomposer
Replies: 2
Views: 2377

Re: "set_core_high_priority_on" uses up a core in xtimecomposer

Thanks for your help. That worked great
infiniteimprobability wrote:try:

Code: Select all

{
set_core_high_priority_on();
#if (AUDIO_CLASS==2)
XUD_Manager(c_xud_out, ENDPOINT_COUNT_OUT, c_xud_in, ENDPOINT_COUNT_IN,.........
}
You are starting a core which just executes set_core_high_priority_on(); and then exits..
by osch
Fri Feb 09, 2018 9:45 am
Forum: Development Tools and Programming
Topic: "set_core_high_priority_on" uses up a core in xtimecomposer
Replies: 2
Views: 2377

"set_core_high_priority_on" uses up a core in xtimecomposer

Hello. I am trying to implement the change mentioned in this document to ensure i have maximum resources available for xud_manager: https://www.xmos.com/download/private/AN01027%3A-Porting-the-XMOS-USB-2.0-Audio-Reference-Software-onto-XU208-custom-hardware(1.0.0rc1).pdf When i try to implement this...