Configuring my SA9227 with PCM5102A 32BIT / 384KHZ USB3 Hifi Audio DAC on Linux
SA9227 with PCM5102A 32BIT / 384KHZ USB3 Hifi Audio DAC
I was looking for a high end Audio DAC for Linux and found this unit. I wanted to generate IQ moderation for a transmitter and this module would work nicely. It Unfortunately it only works on USB3 so this one cant be used on raspberry Pi 3 :-( but works fine on my Ubuntu laptop.
Description
Input :5 V (USB supply),
THD+N: <0.005% (RL = 10 kω)
independence: >95 dB
DRC: >95 dB
USB sample rate:16-32BIT/32-284KHZ
I first tried it on a USB 2 port but got this error when connecting the Device to the usb2 port
/var/log$ tail -f syslog
Jun 5 21:32:03 anton-SATELLITE-P755 kernel: [101544.064132] usb 2-1.2: device descriptor read/64, error -32
Jun 5 21:32:03 anton-SATELLITE-P755 kernel: [101544.240155] usb 2-1.2: new full-speed USB device number 21 using ehci-pci
Jun 5 21:32:03 anton-SATELLITE-P755 kernel: [101544.312119] usb 2-1.2: device descriptor read/64, error -32
Jun 5 21:32:03 anton-SATELLITE-P755 kernel: [101544.488089] usb 2-1.2: device descriptor read/64, error -32
Jun 5 21:32:04 anton-SATELLITE-P755 kernel: [101544.664066] usb 2-1.2: new full-speed USB device number 22 using ehci-pci
Jun 5 21:32:04 anton-SATELLITE-P755 kernel: [101545.072135] usb 2-1.2: device not accepting address 22, error -32
Jun 5 21:32:04 anton-SATELLITE-P755 kernel: [101545.144111] usb 2-1.2: new full-speed USB device number 23 using ehci-pci
Jun 5 21:32:05 anton-SATELLITE-P755 kernel: [101545.552096] usb 2-1.2: device not accepting address 23, error -32
Jun 5 21:32:05 anton-SATELLITE-P755 kernel: [101545.552269] usb 2-1-port2: unable to enumerate USB device
Jun 5 21:32:05 anton-SATELLITE-P755 gnome-session[2394]: (gnome-software:2545): Gs-WARNING **: failed to call gs_plugin_refine on appstream: Error opening file: Permission denied
I then tried it on a usb 3 port and got the following log.
Jun 5 21:49:55 anton-SATELLITE-P755 kernel: [102616.072168] usb 3-1: new full-speed USB device number 2 using xhci_hcd
Jun 5 21:49:55 anton-SATELLITE-P755 kernel: [102616.192175] usb 3-1: device descriptor read/64, error -71
Jun 5 21:49:55 anton-SATELLITE-P755 kernel: [102616.416205] usb 3-1: device descriptor read/64, error -71
Jun 5 21:49:56 anton-SATELLITE-P755 kernel: [102616.632092] usb 3-1: new full-speed USB device number 3 using xhci_hcd
Jun 5 21:49:56 anton-SATELLITE-P755 kernel: [102616.752241] usb 3-1: device descriptor read/64, error -71
Jun 5 21:49:56 anton-SATELLITE-P755 kernel: [102616.976267] usb 3-1: device descriptor read/64, error -71
Jun 5 21:49:56 anton-SATELLITE-P755 kernel: [102617.192119] usb 3-1: new full-speed USB device number 4 using xhci_hcd
Jun 5 21:49:56 anton-SATELLITE-P755 kernel: [102617.192513] usb 3-1: Device not responding to setup address.
Jun 5 21:49:56 anton-SATELLITE-P755 kernel: [102617.396397] usb 3-1: Device not responding to setup address.
Jun 5 21:49:57 anton-SATELLITE-P755 kernel: [102617.600038] usb 3-1: device not accepting address 4, error -71
Jun 5 21:49:57 anton-SATELLITE-P755 kernel: [102617.712114] usb 3-1: new high-speed USB device number 5 using xhci_hcd
Jun 5 21:49:57 anton-SATELLITE-P755 kernel: [102617.733859] usb 3-1: New USB device found, idVendor=262a, idProduct=9227
Jun 5 21:49:57 anton-SATELLITE-P755 kernel: [102617.733864] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Jun 5 21:49:57 anton-SATELLITE-P755 kernel: [102617.733867] usb 3-1: Product: HD USB Audio
Jun 5 21:49:57 anton-SATELLITE-P755 kernel: [102617.733869] usb 3-1: Manufacturer: XENRAN Audio
Jun 5 21:49:57 anton-SATELLITE-P755 kernel: [102617.737019] input: XENRAN Audio HD USB Audio as /devices/pci0000:00/0000:00:1c.5/0000:05:00.0/usb3/3-1/3-1:1.0/0003:262A:9227.0002/input/input16
Jun 5 21:49:57 anton-SATELLITE-P755 kernel: [102617.737332] hid-generic 0003:262A:9227.0002: input,hidraw0: USB HID v1.00 Device [XENRAN Audio HD USB Audio] on usb-0000:05:00.0-1/input0
Jun 5 21:49:57 anton-SATELLITE-P755 mtp-probe: checking bus 3, device 5: "/sys/devices/pci0000:00/0000:00:1c.5/0000:05:00.0/usb3/3-1"
Jun 5 21:49:57 anton-SATELLITE-P755 mtp-probe: bus: 3, device: 5 was not an MTP device
Jun 5 21:49:57 anton-SATELLITE-P755 systemd-udevd[19211]: Process '/usr/sbin/alsactl -E HOME=/run/alsa restore 1' failed with exit code 99.
Jun 5 21:50:01 anton-SATELLITE-P755 gnome-session[2394]: (gnome-software:2545): Gs-WARNING **: failed to call gs_plugin_refine on appstream: Error opening file: Permission denied
Setting up my 30m APRS on HF using Quisk SDR, Soundmodem and Xastir on Linux.
Here is how I conferred my HF APRS gateway from a HF SDR. (30m Softrock SDR)
30m APRS hardware
1) Install QUISK (SDR software) on on Linux. 2) Install Alsa loop. (loopback sound driver) 3) Install Soundmodem. (AFSK Modem) 4) Install Xastir. ( APRS IGate and map viewer)
So lets begin.
1) Install QUISK (SDR software) on on Linux.
The Quisk instillation need Python so you will have to install the following first. Install the following packages. sudo apt-get install python2.7, python2.7-dev, python-wxgtk2.8, fftw3-dev, libasound2-dev, and portaudio19-dev.
goto your Downloads directory. ( or you favorite directory) cd Downloads Download the Quisk application from if you want the latest version at http://james.ahlstrom.name/quisk/docs.html (quisk-3.4.4.tar.gz tar -xvf and then run quisk.py you need python ass seen above) or you could run the command sudo apt-get install quisk
Here is the instructions if you get the latest version
sudo apt-get install quisk wget http://james.ahlstrom.name/quisk/quisk-3.6.18.tar.gz unzip the quisk source code tar -xvf quisk-3.6.18.tar.gz there should now be a directory quisk-3.6.10 goto quisk-3.6.10 directory cd quisk-3.6.10 Compile the quisk application sudo make sudo make install you now need to create a configuration file for quisk to see your Softrock lite II sdr sound input IQ signal. Create a text file with you favorite text editor and copy the text below and save it as 30m_aprs_quisk_conf_sdriq.py #***************************************************** # These are the configuration parameters for Quisk using the # SDR-IQ by RfSpace as the capture device. # Please do not change this sample file. # Instead copy it to your own .quisk_conf.py and make changes there. # See quisk_conf_defaults.py for more information. from sdriqpkg import quisk_hardware # Use different hardware file # In ALSA, soundcards have these names: #name_of_sound_play = "hw:0" #name_of_sound_play = "hw:1" #name_of_sound_play = "plughw" #name_of_sound_play = "plughw:1" #name_of_sound_play = "default" use_sdriq = 1 # Use the SDR-IQ sdriq_name = "pcm.sdrXonarD1Record12" sdriq_clock = 66666667.0 # actual sample rate (66666667 nominal) sdriq_decimation = 1250 # Must be 360, 500, 600, or 1250 sample_rate = int(float(sdriq_clock) / sdriq_decimation + 0.5) # Don't change this name_of_sound_capt = "" # We do not capture from the soundcard name_of_sound_play = "hw:0" # Play back on this soundcard need s to be loopback device playback_rate = 48000 # Radio sound play rate channel_i = 0 # Soundcard index of left channel channel_q = 1 # Soundcard index of right channel display_fraction = 0.85 # The edges of the full bandwidth are not valid
Then save the file. We now need to setup the ALSA sound system to map the alsa audio coming into the server to a friendly name "pcm.sdrXonarD1Record12" see above config file. Run the command sudo arecord -l it will list all the ALSA audio input devices. sudo arecord -l **** List of CAPTURE Hardware Devices **** xcb_connection_has_error() returned true Home directory /home/anton not ours. card 0: D1 [Xonar D1], device 0: Multichannel [Multichannel] Subdevices: 0/1 Subdevice #0: subdevice #0 card 1: PCH [HDA Intel PCH], device 0: VT1708S Analog [VT1708S Analog] Subdevices: 2/2 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 card 2: D1_1 [Xonar D1], device 0: Multichannel [Multichannel] Subdevices: 0/1 Subdevice #0: subdevice #0 card 3: M44 [M Audio Delta 44], device 0: ICE1712 multi [ICE1712 multi] Subdevices: 0/1 Subdevice #0: subdevice #0
Please note I have multiple sound cards in my Linux server so you might not have as many interfaces listed as mine above.
Identify the your sound card in the list. in my case it is :card 3: M44 [M Audio Delta 44], device 0: ICE1712 multi [ICE1712 multi] You now need to configure the ALSA system to map the name of quisk to this card and you do it in the ALSA config file in your user home directory. (in my case it is /home/anton) cd to go to your home directory pwd To list your home directory /home/anton edit the following ALSA audio mapping file with you favorite text editor .asoundrc (note the dot in front of the name it means its hidden) I use VI as an editor
vi .asoundrc
Add the following and change the names relevant your sound card name (RED)
card M44 # this has to be done to force reboot to point to same cards
}
#************************* controller section *********************************** ctl.sdrM44_card {#defining the control interface type hw card M44 # this has to the same as above } #****************************** recording *********************************** pcm.sdrM44Record12 { # input input 1 and 2 type plug slave { pcm "dsnooper_M44" channels 4 } ttable.0.0 1 ttable.1.1 1 }
Run the quisk with your costume configuration with the full path to the configfile sudo quisk -c /home/anton/Downloads/quisk-3.6.10/quisk_conf_softrock_iq.py
Now we need to setup the ALSA loop back audio interface for Quisk to send the USB demodulated audio to Xastir or Fldigi or what ever modem device you are using.
2) Install ALSA loop. (Loopback sound driver)
To check if it is already installed in the ALSA device driver. run the command sudo arecoed -l If you see the loopback devise skip this section below and go section 3
Compiling snd-aloop if needed
Update: it may not be needed any longer as of kernel 2.6.38 ...
It may well be that the ALSA Loopback kernel module was not included in your distribution's kernel package (it is the case in e.g. debian, as far as I know). This is no bother as we can easily compile it. Note that there is no way around since the loopback ALSA module is not part of the kernel baseline in general. So unless your kernel packager had done the following work, you will have to do it yourself ...
Warning: I tried alsa-driver 1.0.21 against 2.6.33.5-rt22 and while it compiled fine, it would not load at all, even when forced. So don't waste your time with this version combo.
Make sure you really don't have it installed. Better check that not :) sudo modinfo snd-aloop
If modinfo reports nada, time to check that you have installed the kernel headers corresponding to your presently running kernel. I'll leave this to you as this is very distro dependent. In debian based distros, the package is called something like linux-headers-xxx and must match the installed kernel (package linux-image-xxx).
Time to make a backup of the installed kernel modules. Example:
cd mkdir backup cd backup cp -a /lib/modules/`uname -r`/kernel/sound .
Prerequisite: you of course need a compiler and other tools. In debian based distros, you can check that you have a package called build-essential installed: dpkg -l build-essential
If not, just get it: sudo apt-get install build-essential
Now grab the alsa-driver source code (same version as your installed ALSA, in my case 1.0.23 which I will use in my description) from the The ALSA website, uncompress, untar it and cd to the alsa-driver top dir. Here is a command summary
cd mkdir source cd source wget ftp://ftp.alsa-project.org/pub/driver/alsa-driver-1.0.23.tar.bz2 tar jxvf alsa-driver-1.0.23.tar.bz2 cd alsa-driver-1.0.23
Now you have to configure the source package for compilation. To help you, look at what ALSA modules are currently loaded: cat /proc/asound/modules
make sudo make install
It will normally install all the compiled modules into the correct location of your kernel installation. Now check that the kernel knows about the loopback module:
~$ sudo modinfo snd-aloop filename: /lib/modules/2.6.32/kernel/sound/drivers/snd-aloop.ko license: GPL description: A loopback soundcard author: Jaroslav Kysela <perex@perex.cz> srcversion: B85A5847D027749DCF96195 depends: snd-pcm,snd vermagic: 2.6.32 SMP preempt mod_unload modversions CORE2 parm: index:Index value for loopback soundcard. (array of int) parm: id:ID string for loopback soundcard. (array of charp) parm: enable:Enable this loopback soundcard. (array of bool) parm: pcm_substreams:PCM substreams # (1-8) for loopback driver. (array of int)
Now lets load it. But before that, shut down all audio apps (including firefox). Once done, do this: sudo modprobe snd-whatever-module-you-need sudo modprobe snd-aloop sudo alsa force-unload
Now, see if it works: ~$ lsmod | grep aloop snd_aloop 4732 0 snd_pcm 57065 6 snd_aloop,snd_hdsp snd 40404 18 snd_aloop,snd_hdsp,snd_pcm,snd_hwdep,snd_rawmidi,snd_seq,snd_timer,snd_seq_device If all was ok then add snd-aloop in /etc/modules. (If you wish, you can give the loopback soundcard another name than "Loopback" in a modprobe option but I kept the default throughout the entire HOWTO and there is no need to change it.) In case anything went wrong and you wish to go back to your previous ALSA installation, no problem: sudo rm /lib/modules/`uname -r`/kernel/sound sudo cp -a ~/backup/sound /lib/modules/`uname -r`/kernel/ sudo alsa force-reload there should be two new ALSA devicess
This virtual sound card consists of 2 devices: hw:Loopback,0 hw:Loopback,1 to see if the loop back connector is active run the command aplay -l or arecord -l
if you did see the above loopback then you are ok and we can just add the loopback configuration to the 30m_aprs_quisk_conf_sdriq.py file as above.
edit the file 30m_aprs_quisk_conf_sdriq.py and make shore the it has the following. name_of_sound_play = "hw:0" # Play back on this soundcard need s to be loopback device select the configeration button on quisk to see if the loopback is working fine.
Now we can configure Soundmodem and Xastir to decode our HF APRS....
3) Install Soundmodem. (AFSK Modem)
Instillation of soundmodem sudo apt-get install soundmodem
We now need to configure the soundmodem and this can easily be done with guide. sudo soundmodemconfig
Set up the ALSA audio driver and point it to the loopback interface we have configured above " plughw:Loopback,1,0"
Create a new channel by write clicking on the previous configuration that was created and selecting new channel.
Select KISS and then enter the serial device file /dev/soundmodem0
Select Modulator and set the bits 300 board and Frequencies to 900Hz , 1.1 Khz and enable Differential Encoding.
Select Demodeluator and set the bits 300 board and Frequencies to 900Hz , 1.1 Khz and enable Differential Encoding.
Now to test your configuration.
Select the diagnose menu and then the spectrum option and then tune the APRS frequency on the Quisk SDR so that the AFSK tones is in the center of pass band section in the spectrum display below. (Center frequency is 1Khz) You can also then check if you Radio audio frequency is flat. (Both peeks is the same high)
Move your mouse cursor over display to find frequency of display. ( wait for APRS message to be received on HF)
Adjust the Quisk SDR frequency until the APRS signal is across the 1Khz frequency. see above
That's it, your soundmodem is configured.
here is a copy of my soundmodem configuration file /etc/ax25/soundmodem.conf that was generated with soundmodemconfig application.
