8~15 channels get no signal in xCORE-200 Multichannel Audio Platform

Technical questions regarding the XTC tools and programming with XMOS.
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plus2047
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Joined: Thu Feb 16, 2017 8:13 am

8~15 channels get no signal in xCORE-200 Multichannel Audio Platform

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I need all 32 channels in xCORE-200 Multichannel Audio Platform. Of couse, because it have only 8 analog in channels on board, it would copy 0~7 channels into 8~15 and 16~23 and 24~31 channels. However, I find that 8~15 channels don't work. When other channels get signal, they just get zero.

This is the bug report I submit:

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基本信息
编号: 9797
状态: 创建
Severity: Minor
队列: Report-a-Bug
Category: Development Kits

Hardware Platform: XR-USB-AUDIO-2.0-MC

Tools, Hardware and OS version details:
xTIMEcomposer 14.2.4
OS: Ubuntu 16.04 with 4.4.0-62-generic kernel
Using portaudio19-dev version: 19+svn20140130-1build1
Using Python package: sounddevice newest.

Step-by-Step procedure to recreate the issue:
Use xCORE-200 Multichannel Audio Platform.
Download XMOS USB Audio software from:https://www.xmos.com/download/private/s ... .2rc1).zip
Import app_usb_aud_xk_216_mc in sw_usb_audio
Use Build setting: 2i32o32xxxxx_tdm8
build the project, flash into Multichannel Audio Platform.
Set the wire jumpers in dev board. Make them all to be different from this picture: https://www.xmos.com/files/xk-audio-216-mc-ab-960.jpg, and it should be the right setting for using all 32 channels.
Link the dev board with computer(OS: ubuntu 16.04), it should be seemed as a 32 in / 32 out audio device.
Line in a sound signal in first channel in the 8 analog channels in dev board. Than use any audio record software(like audacity or python3 with sounddevice module) to record some seconds.
The dev board should copy 1~8 channels to other channels, so channels 1,9,17,25 (or 0,8,16,24 for count from 0) should get signal, but I cannot get signal from channel 8.

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Is there anyone who get the same problem?


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