Hello, newb here. I have been playing with the matrix creator the last few days. I was able to get everloop working but I have not been able to get the mics working.
When I run the below command I hear nothing back arecord recording.wav -f S16_LE -r 16000 -d 5 aplay recording.wav
When I run the below command I do hear audio output. This leads me to believe that the issue isn’t on the output but on the input.
sudo aplay /usr/share/sounds/alsa/Front_Center.wav
On the snips side when I run “sam test speaker” I hear the output
When I run “sam test microphone” I don’t hear anything on the playback after talking to it.
When I run “sam status” one thing I do notice is that snips-audio-server and snips-analytics are shown as “not running” while everything else is “running”
Any help is greatly appreciated. My goal is to get the audio working and then move on to the camera next.
I thought I had ran those commands but I must not have. Now when I run sudo apt-get update I get this message
E: Type ‘“deb’ is not known on line 1 in source list /etc/apt/sources.list.d/matrixlabs.list
E: The list of sources could not be read.
I was trying to determine the issue and was reading online that the quotes could cause this. Any idea on this? I can’t seem to edit that file though. I tried running gksudo gedit /etc/apt/sources.list.d/matrixlabs.list but nothing happens.
I replicated the issue and this solved it for me after a reboot. This happens because upgrade needs user input of y/n and if you have input after that it is unable to complete.
I did. I actually ran through that whole process again twice now.
Now when I run
amixer set PCM 100% && arecord recording.wav -f S16_LE -r 16000 -d 5 && aplay recording.wav
I get this message
amixer: Unable to find simple control ‘PCM’,0
When I run sudo apt-get upgrade it did not require user input y/n like Samreen mentioned in her post.
Also when i run the kernel install it states 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded
Any other possible ideas on what I could be doing wrong here? I’ve got the video working well now so my only hold up for my project currently is this mic issue.
lsmod | grep matrix
this command returns nothing which confuses me. I have run the kernel install multiple times.
dpkg -l | grep matrix
ii libmatrixio-creator-hal:armhf 0.3.7 armhf Hardware Abstraction Layer for MATRIX.
ii libmatrixio-creator-hal-dev 0.3.7 armhf Hardware Abstraction Layer for MATRIX (headers)
ii libmatrixio-malos:armhf 0.1.3 armhf Libraries of MATRIX abstraction layer for MOS
ii libmatrixio-protos:armhf 0.1.5 armhf Protocolbuffers for MATRIX abstraction layer
ii libswresample-dev:armhf 7:3.2.12-1~deb9u1+rpt1 armhf FFmpeg library for audio resampling, rematrixing etc. - development files
ii libswresample2:armhf 7:3.2.12-1~deb9u1+rpt1 armhf FFmpeg library for audio resampling, rematrixing etc. - runtime files
ii matrixio-creator-init 0.4.13 armhf Install scripts that can program the MATRIX Creator FPGA and SAM3 IMU.
ii matrixio-kernel-modules 0.1.4 armhf Install kernel modules for MATRIX devices.
ii matrixio-malos 0.3.5 armhf Allows queries to MATRIX Creator hardware via ZMQ.
ii matrixio-openocd 1.0.1 armhf Open on-chip JTAG debug solution for ARM and MIPS systems
ii matrixio-protobuf 3.5.0 armhf Protocol Buffers - Google’s data interchange format. (From GRPC 3.5.0)
ii matrixio-xc3sprog 1.1.1 armhf Spartan3, XCF and CPLD JTAG programmer and other utilities.
Your issue is an uncommon one, so there are a couple of options to pinpoint where the problem is.
Do you have an extra microSD card (or is it okay for you to start over on your current one) so you can start from scratch just to purely test the mics without any additional configurations? In this case, I would ask you to just install the matrix packages & kernel modules on a fresh Raspbian Stretch install, then test the mics. So, follow this guide that you had mentioned earlier exactly.
This would give us a base point to troubleshoot the mic issue without the chance of camera packages or other settings interfering.
If it is not feasible for you to do so, I can try to replicate your issue, troubleshoot from here, and let you know what I come up with. In that case, it would be best if you could tell me exactly the sequence of steps that you took, what camera you are using, and what packages you installed for it/configurations you changed.
I think I can play with a new sd card and try that. It may take me a bit as I didn’t have to install this from scratch on arrival. We ordered the matrix creator cv kit so the pi came already flashed and setup.
That’s interesting. The MATRIX Creator CV kit comes with MATRIX HAL, MATRIX Core, and if you got the kit within the past two weeks, MATRIX Lite JS already installed. If you go to the Desktop, there should be folders with example programs for each library layer. The kernel modules should also be installed, so arecord and the MATRIX HAL mic examples should work out of the box.
The video with the steps that you referenced are for MOS installation which is deprecated. So, while it’s not supposed to happen, maybe it configured something which messed with the kernel modules.
I think starting from scratch is the best option. Not sure if you need any help there, but you can follow this guide we have to flash and setup your SD card.
Here is the current kit image that we flash on the MATRIX Creator CV Kit. So, all you would have to do is flash this image, and run the following to check if the mics work.
