Wolfson and MPD  working

Hi Shabaz,

Explain this then:-

http://www.datasheetarchive.com/PCM5102-datasheet.html

Texas Instruments Cross Reference Results

I always thought there was some wheeling and dealing between Burr Brown and Texas and Wolfson over the DAC design!

regards

Patrick

As stated earlier:

From a hardware point of view it won't have effects like skip or anything like the USB ones you've experienced. The interface is very different, and is at a determined rate with no contention from other devices like USB. It is a dedicated audio interface.

There may well be software or driver, or other issues, but I'm afraid I can't help with that. Perhaps someone else can.

Two part numbers are on the one website, agreed (and just to avoid confusion - neither of these part numbers have anything to do with the

Wolfson audio card!), but they are not similar parts. For any part (Wolfson audio or not) it can be confirmed by looking at the manufacturer data sheets.

I don't think I've read about anyone having usb bandwidth issues after switching from usb dacs to i2s. Shouldn't all the success hifberry users have also be true for wolfson card users in this respect?

I'm not sure if you mentioned this or not, but were you able to play 24/192 files through usb dacs without glitches when the files were on the sd card?

I have just played a bunch of 96 and 192 KHz/24bit tracks with the lxmusic player, average bit rate 5 111 Kbps.

The flac files reside on another RPi that I have NFS-mounted.

Both Pis use USB hard disks, I only have a boot partition on the SD cards.

I experience no clicks or pauses whatsoever. When playing 192KHz tracks, the nfs server processes use ~9% CPU, at 96KHz they use less than 0.1%

--

Ragnar

I'm trying to get my wolfson card going-but I'm terribly struck...

What i did:

- install 2014-01-07-wheezy-raspbianW.zip

- expandet the FS

- updated

- sudo apt-get install lxmusic xmms2 xmms2-plugin-all volumeicon-alsa mpg123 mplayer 

startx, and the musicplayer:

there is no sound, altough i tried all output sound-systems..

at the bash

i get errors when i try to play some music directly...

Any hint how to get it working?

You remembered to run the appropriate use case script (Playback_to...) first?

"-updated"

Updated what? It's possible you have updated the kernel, and now have an official Foundation kernel without the Wolfson drivers.

The command

cat /proc/version

should return "Linux version 3.10.25_Wolfson+ (ragnar@kernel)..."

If it doesn't, try

sudo cp /boot/kernel_wolfson.img /boot/kernel.img

and reboot.

--

Ragnar

of course i replaced the kernel after the update...

cat /proc/version

Linux version 3.10.25_Wolfson+ (ragnar@kernel) (gcc version 4.7.1 20120402 (prerelease) (crosstool-NG 1.15.2) ) #1 PREEMPT Fri Feb 21 00:03:14 CET 2014

yes I did....

pi@raspberrypi ~ $ /home/pi/use_case_scripts/Playback_to_All.sh

numid=151,iface=MIXER,name='HPOUT2 Digital Switch'

  ; type=BOOLEAN,access=rw------,values=2

  : values=on,on

numid=389,iface=MIXER,name='HPOUT2L Input 1'

  ; type=ENUMERATED,access=rw------,values=1,items=99

  ; Item #0 'None'

  ; Item #1 'Tone Generator 1'

  ; Item #2 'Tone Generator 2'

  ; Item #3 'Haptics'

  ; Item #4 'AEC'

  ; Item #5 'Mic Mute Mixer'

  ; Item #6 'Noise Generator'

I always get an error:

mpd

Failed to bind to '[::]:6600': Failed to create socket: Address family not supported by protocol

"Failed to bind to '[::]:6600'"

It looks like mpd is trying to use IPv6.

Could you post your mpd.conf file?

--

Ragnar

sorry took a few days to get back to life...

To make sure, that I made no mistake i started from beginning...

- install (2014-01-07-wheezy-raspbianW.zip)

- update

# sudo apt-get update

# sudo apt-get upgrade

# sudo rpi-update

# sudo reboot

- replace kernel and check it:

pi@raspberrypi ~ $ cat /proc/version

Linux version 3.10.25_Wolfson+ (ragnar@kernel) (gcc version 4.7.1 20120402 (prerelease) (crosstool-NG 1.15.2) ) #1 PREEMPT Fri Feb 21 00:03:14 CET 2014

- install Music-progr's:

pi@raspberrypi ~ $ sudo apt-get install lxmusic xmms2 xmms2-plugin-all volumeicon-alsa mpg123 mplayer

- use use-case-script

pi@raspberrypi ~ $ sudo /home/pi/use_case_scripts/Playback_to_All.sh

which gives me an output (I removed the lines with the ";" in front  to make the list shorter ;-)

numid=151,iface=MIXER,name='HPOUT2 Digital Switch'

  ; type=BOOLEAN,access=rw------,values=2

  : values=on,on

numid=389,iface=MIXER,name='HPOUT2L Input 1'

  : values=15

numid=120,iface=MIXER,name='HPOUT2L Input 1 Volume'

  ; type=INTEGER,access=rw---R--,values=1,min=0,max=48,step=0

  : values=32

  | dBscale-min=-32.00dB,step=1.00dB,mute=0

numid=385,iface=MIXER,name='HPOUT2R Input 1'

  : values=16

numid=124,iface=MIXER,name='HPOUT2R Input 1 Volume'

  ; type=INTEGER,access=rw---R--,values=1,min=0,max=48,step=0

  : values=32

  | dBscale-min=-32.00dB,step=1.00dB,mute=0

when i start mplayer with a music file I get:

pi@raspberrypi ~ $ mplayer /media/cross.mp3

MPlayer svn r34540 (Debian), built with gcc-4.6 (C) 2000-2012 MPlayer Team

mplayer: could not connect to socket

mplayer: No such file or directory

Failed to open LIRC support. You will not be able to use your remote control.

Playing /media/cross.mp3.

libavformat version 53.21.1 (external)

Mismatching header version 53.19.0

Audio only file format detected.

Clip info:

Title:

Artist:

Album:

Year:

Comment:

Genre: Unknown

Load subtitles in /media/

==========================================================================

Requested audio codec family [mpg123] (afm=mpg123) not available.

Enable it at compilation.

Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders

libavcodec version 53.35.0 (external)

Mismatching header version 53.32.2

AUDIO: 48000 Hz, 2 ch, floatle, 320.0 kbit/10.42% (ratio: 40003->384000)

Selected audio codec: [ffmp3float] afm: ffmpeg (FFmpeg MPEG layer-3 audio)

==========================================================================

AO: [pulse] Init failed: Connection refused

Failed to initialize audio driver 'pulse'

[AO_ALSA] alsa-lib: pcm_hw.c:1293:(snd_pcm_hw_open) open '/dev/snd/pcmC0D0p' failed (-16): Device or resource busy

[AO_ALSA] Playback open error: Device or resource busy

Failed to initialize audio driver 'alsa'

[AO SDL] Samplerate: 48000Hz Channels: Stereo Format floatle

[AO SDL] using aalib audio driver.

[AO SDL] Unsupported audio format: 0x1d.

[AO SDL] Unable to open audio: No available audio device

Failed to initialize audio driver 'sdl:aalib'

Could not open/initialize audio device -> no sound.

Audio: no sound

Video: no video

Exiting... (End of file)

So, I think there is a configuration problem of mplayer or alsa....

Any hint?