Cirrus Logic Audio Card does not recognize single-channel mono files

Use aplay -Dplughw:... instead of -Dhw:...

Plughw is the default alsa "filter" and will do automatic sample rate / format conversions. Usually you want to have that instead of hw:... If you run aplay without the -D option it'll use plughw with the first card. So if you disabled the onboard audio (or made sure the cirrus card is fixed at index 0) you can use just aplay file.wav.

BTW: you might need to enable the i2s-mmap overlay, IIRC plughw needs this.

so long,

Hias

Hello Matthias,

If I use  -Dplughw  the result it the following:

Test1: Mono file.  It setup one channel (-c  1). It doesn´t work.

root@raspberrypi:/home/pi# aplay -Dplughw:sndrpiwsp -r 44100 -c 1 -f S16_LE Front_Center.wavPlaying WAVE 'Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
aplay: set_params:1145: Unable to install hw params:
ACCESS:  RW_INTERLEAVED
FORMAT:  S16_LE
SUBFORMAT:  STD
SAMPLE_BITS: 16
FRAME_BITS: 16
CHANNELS: 1
RATE: 48000
PERIOD_TIME: 125000
PERIOD_SIZE: 6000
PERIOD_BYTES: 12000
PERIODS: 4
BUFFER_TIME: 500000
BUFFER_SIZE: 24000
BUFFER_BYTES: 48000
TICK_TIME: 0

Test2: Mono file.  It is setup Two channel  (-c  2). It doesn´t work.

root@raspberrypi:/home/pi# aplay -Dplughw:sndrpiwsp -r 44100 -c 2 -f S16_LE Front_Center.wav
Playing WAVE 'Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
aplay: set_params:1145: Unable to install hw params:
ACCESS:  RW_INTERLEAVED
FORMAT:  S16_LE
SUBFORMAT:  STD
SAMPLE_BITS: 16
FRAME_BITS: 16
CHANNELS: 1
RATE: 48000
PERIOD_TIME: 125000
PERIOD_SIZE: 6000
PERIOD_BYTES: 12000
PERIODS: 4
BUFFER_TIME: 500000
BUFFER_SIZE: 24000
BUFFER_BYTES: 48000
TICK_TIME: 0

Test3: Stereo file.  It setup two channel  (-c  2). It working .

root@raspberrypi:/home/pi# aplay -Dplughw:sndrpiwsp -r 44100 -c 2 -f S16_LE Track_8s_32bits_44100Hz_stereo_2C.wav
Playing WAVE 'Track_8s_32bits_44100Hz_stereo_2C.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo

I think that the audio card is correctly installed. My problem is when the audio file is single-channel mono, but when the audio reproduced is stereo (two-channel) , I don't have problem.
I would like to known if it is possible to play a mono file? and in this case, the right way to follow.

Best regards,

Jose

You don't seem to have mmap enabled. Are you sure you have "dtoverlay=i2s-mmap" in config.txt and it's working correctly?

Check with "aplay -Dhw:sndrpiwsp --dump-hw-params file.wav", at the very beginning you should see this line:

ACCESS:  MMAP_INTERLEAVED RW_INTERLEAVED

so long,

Hias

Thanks for the answer.

But this it mean that it is possible to play single-channel mono files?.

I'm no expert in raspberry and I don´t understand the purpose of these changes.

On the other hand, I have tested the file   /boot/config.txt , and doesn´t has the line dtoverlay=i2s-mmap

File config.txt

# For more options and information see

# http://www.raspberrypi.org/documentation/configuration/config-txt.md

# Some settings may impact device functionality. See link above for details

# uncomment if you get no picture on HDMI for a default "safe"
mode

#hdmi_safe=1

# uncomment this if your display has a black border of unused pixels
visible

# and your display can output without overscan

#disable_overscan=1

# uncomment the following to adjust overscan. Use positive numbers if
console

# goes off screen, and negative if there is too much border

#overscan_left=16

#overscan_right=16

#overscan_top=16

#overscan_bottom=16

# uncomment to force a console size. By default it will be display's size
minus

# overscan.

#framebuffer_width=1280

#framebuffer_height=720

# uncomment if hdmi display is not detected and composite is being output

#hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (this will force VGA)

#hdmi_group=1

#hdmi_mode=1

# uncomment to force a HDMI mode rather than DVI. This can make audio work
in

# DMT (computer monitor) modes

#hdmi_drive=2

# uncomment to increase signal to HDMI, if you have interference, blanking,
or

# no display

#config_hdmi_boost=4

# uncomment for composite PAL

#sdtv_mode=2

#uncomment to overclock the arm. 700 MHz is the default.

arm_freq=900

core_freq=250

sdram_freq=450

over_voltage=2

dtoverlay=rpi-cirrus-wm5102-overlay

I have added in the file config.txt the commad:  dtoverlay=i2s-mmap and I have rebooted the raspberry

Also, I have executed the command    aplay --dump-hw-params and the result it the following

pi@raspberrypi /var/www $ aplay -Dhw:sndrpiwsp --dump-hw-params  file.wav

aplay: unrecognized option '--dump-hw-params'

Try `aplay --help' for more information.

pi@raspberrypi /var/www $ aplay -Dhw:sndrpiwsp --dump-hw-params -r 44100 -c 2 -f S16_LE Muestra02_8s_32bits_44100Hz_mono_1C.wav

aplay: unrecognized option '--dump-hw-params'

Try `aplay --help' for more information.

With aplay -h , doesn´t appears information about the --dump

Why appeard the message aplay: unrecognized option '--dump-hw-params' .   Is it problem of versions?

Best regards,

Jose

Hi Jose!

With aplay -h , doesn´t appears information about the --dump

 

 

Why appeard the message aplay: unrecognized option '--dump-hw-params' . Is it problem of versions?

Indeed, you seem to be running an old version (--dump-hw-params only works with the current Raspbian Jessie version).

Could you enter "uname -a" to check which kernel version you are running? If that's an old one too it might not support i2s-mmap at all - so no chance of getting mono playback working with it.

The best solution would be to do a fresh Raspbian Jessie installation, make sure you are running kernel 4.4 and then follow the instructions on my webpage (install kernel 4.4 with cirrus drivers)

http://www.horus.com/~hias/cirrus-driver.html

Then everything should work out of the box.

so long,

Hias

Hello  Hias,

Thank you for your answer.

I am going to work in the installation of kernell  version 4.4. 

My current version of Kernel is: 3.18

pi@raspberrypi ~ $ uname -a  

Linux raspberrypi 3.18.9-v7+ #2 SMP PREEMPT Mon Mar 23 20:25:20 GMT 2015 armv7l GNU/Linux

On the other hand:

I have a Raspberry Pi 2 Model B.   (Model B)   ¿Is it necessary to buy the raspberry 3 (model B)?

My current image was downloaded  from (this is the image indicated by Fannel):

http://downloads.element14.com/downloads/cirrus/cirrus_logic_audio_card_all_pi_versions.zip?ICID=CirrusLogicAudio-topMain-firmware&COM=CirrusLogicAudioCard

I want to clarify that when indicated I need to play single-channel mono file, this file has only signal in one channel, and not the same signal for two channels.

Best regards,

Jose

On the other hand:

I have a Raspberry Pi 2 Model B. (Model B) ¿Is it necessary to buy the raspberry 3 (model B)?

It doesn't make too much difference. RPi3 is a little bit faster and has WiFi+Bluetooth on board. If you don't need these the RPi2 will do just fine.

My current image was downloaded from (this is the image indicated by Fannel):

OK, this explains everything That image is outdated and comes with a buggy driver. Better use the kernel from my website on top of standard Raspbian. I've fixed the most annoying driver bugs and made sure it also works with RPi3.

I want to clarify that when indicated I need to play single-channel mono file, this file has only signal in one channel, and not the same signal for two channels.

That's also how I understood your question.

BTW: The same happens with most PC soundcards. Usually the hardware is limited to 2 channels (minimum) and the default ALSA plugin has to upmix mono to stereo and do samplerate conversions (early AC97 cards only support 48kHz for example). If you try to play a mono file on a Linux PC using -Dhw:0 you usually get the same errors.

so long,

Hias

Thank you so much Mattias. It is working now.

I have installed the version 4.4.6 and now I can to play and record a single-channel mono file.

I followed the steps  (http://www.horus.com/~hias/cirrus-driver.html )

In my case,  I executed the following steps

1) To start a Root session.

2) I have download the file cirrus-linux-4.4.6.tgz.

3) I have copy this file in /root

4) It is executed  the following  comand

root@raspberrypi ~ $ sudo tar zxf cirrus-linux-4.4.6.tgz -C /

5) Add the following line to /boot/config.txt

dtoverlay=rpi-cirrus-wm5102

dtoverlay=i2s-mmap

Note: It is deleted the "overlay" in the line:  dtoverlay=rpi-cirrus-wm5102-overlay

6) Create a file /etc/modprobe.d/cirrus.conf with the following content:

softdep arizona-spi pre: arizona-ldo1

softdep spi-bcm2708 pre: fixed

softdep
spi-bcm2835 pre: fixed

7)Download and install "usecase" scripts in /home/pi/bin.

wget http://www.horus.com/~hias/tmp/cirrus/usecase-scripts.tgz

mkdir bin

cd bin

tar zxf
../usecase-scripts.tgz

8)Disable RPi on-board audio device snd-bcm2835

In my case, doesn't was necessary. It was disabled.

9) Disable Raspbian kernel updates.

sudo apt-mark hold raspberrypi-bootloader

8) Updating the GPU firmware.  It is executed  the following  comand

sudo SKIP_KERNEL=1 rpi-update

9) Reboot  the system.

Test:

pi@raspberry ~$ ./Playback_to_Lineout.sh

pi@raspberry ~$ aplay -Dplughw:sndrpiwsp -r 8000 -c 1 -f S16_LE mono_file_1C.wav

The file was play correctly.

Thanks again Mattias.

Regards

Jose.