Squeezeplayer to play the music (apt install squeezelite)
Install bluez-alsa to connect my duoS BT to my BT headphone.
Set the output device to bluealsa. : $ squeezelite -o bluealsa
Ace in the hole! Interface working snappy, no lagging, music sounds good.
My battery pack can play 20 hours and more. Nice.
This is a work in progress. What i like to do further is
a. add LDAC en Aptx to the BT codec.
b. make startup scripts to start LMS server and SQplayer on boot.
c. Move squeezelite to the RTOS core.
d. use an USB DAC dongle on USB-A port instead of the BT.
(e. use I2s to connect a HAT to the duoS)
One question (since I’m looking for this functionality specifically) - have you dropped camera and video processing to maximize available memory or there is some problems with compiling relevant kernel modules ?
(by your advice in other discussions here I’ve looked in sg200x-branches of relevant sophgo’s (not milk ones) github repositories and got under impression that something might prevent kernel and sdk sources compilation)
the middleware libraries for the sensors/ISP link to two utility libraries (a JSON library and a Config file library afaik) that they didn’t provide the source for. As they use MUSL as the libc in their buildroot, it’s incompatible with glibc in Debian.
No 2 should be easily solvable for someone with adequate experience - just update their middleware to build against the OSS version of the json/config libraries)
Hoi again. I try to use the USB-A port, but not quite getting there.
I disabled all the gadgets, rebooted, used usb-switch, rebooted.
lsusb shows my usb drive, lsblk only the ssd card. See pastebin
dmesg shows that i canchange the usb drive.
( i get debian@duos:~$ sudo modprobe usb-storage
modprobe: FATAL: Module usb-storage not found in directory /lib/modules/5.10.4-20240329-1+, should usb-storage be installed?)
(I use fstab, should i mount it there? How do id the drive dev/sda doenst show up anywhere?? usb-devices gives a driver=(None) ? )
I’m building new images that should fix this… should be available soonish (look for 1.3 release or grab a test image from the github actions artifact screen)
Quick Update:
I’ve just released a new version (1.4) that supports DuoS with EMMC.
Next Release will be focusing on mainline support with Kernel 6.10-rc plus proposed patches - meaning that it it will likely be a bit unstable or lots of churn as new patches are posted.
the next release (with mainline) will have some fixes to allow kernel upgrades. (Debain doesn’t like your /boot partition being a FAT partition, and thus when upgrading kernels, it breaks - I’ll copy the rpikernelhack “hack” that raspberrypi uses to get around that).
Using the 1.4 now and having great fun with it. Made an audio streamer by installing/compiling Spotify Connect to it, ( cargo install spotifyd) , then bluezalsa to output to alsa to bluetooth on my receiver. Sounds great. Also a USB dac dongle works great on the USB-A port. Thanks for effort sofar, appreciated!
Firstly, thanks heaps to @Fishwaldo for a great debian image. I copied it to microsd and was able to connect it to the network and update and install using apt-get.
I am new to RISC-V and embedded Linux in general. I would like to port a drm kernel module to the duo256 to drive a display over SPI, is this currently possible with these Debian images?
Make is complaining:
scripts/Makefile.build:44: arch/riscv/kernel/vdso/Makefile: No such file or directory
I can build the driver fine on armhf boards (pi zero w, pi 2)
If someone could point me in the right direction I would really appreciate it. Thanks!
I am not so well versed in the Linux kernel but does anyone know which mainline Linux version is likely to have Duo S support? Would we be able to drop in the new kernel into this debian?
