Rockbox Technical Forums

Rockbox Development => New Ports => Topic started by: speachy on October 09, 2020, 08:50:42 AM

Title: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on October 09, 2020, 08:50:42 AM
(https://www.peachyphotos.com/po/image/241104:362360:5.jpg)

There's still a bit of jankiness to sort out, and plugin keymaps to fix, but... it lives!

All five of those players have completely identical hardware, albeit with two different case designs, and are currently easy to find in the retail (and secondhand) channel.

Edit:  There is also an EROS Q II.  This uses a completely different internal architecture to the original models, and the firmware images are *not* compatible.
Title: Re: AIGO ROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: Milardo on October 09, 2020, 11:13:50 AM
Hi speachy, are you planning to get bluetooth working in  these players and agptek rocker?
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: Telehubis on October 09, 2020, 02:34:55 PM
Great to hear that!

As for the devices can anyone share if they're robust for a couple of years usage?
(I've read in the net that in some cases people had hardware issues with HIFI player)
Title: Re: AIGO ROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on October 09, 2020, 09:22:38 PM
Hi speachy, are you planning to get bluetooth working in  these players and agptek rocker?

It's on the to-do list, but I can't give any sort of ETA on this. 

As for the devices can anyone share if they're robust for a couple of years usage?

No idea -- these devices (and their solid metal cases) certainly feel more physically robust than (eg) the AGPTek Rocker.  Suffice it to say I'm not worried about sitting on this.  Or even occidentally driving over it.  :D

But at the end of the day, it still has a LiIon battery, and those will all eventually fail, especially if exposed to temperature extremes from being left in a car.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on October 09, 2020, 10:26:30 PM
I am very interested in the digital spdif audio output feature :). Might spdif be got working in rockbox? Whats this special usb cable needed for spdif output? Can the player be charged/externally powered while using spdif output?
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on October 10, 2020, 08:02:43 AM
I am very interested in the digital spdif audio output feature :). Might spdif be got working in rockbox? Whats this special usb cable needed for spdif output? Can the player be charged/externally powered while using spdif output?

I don't see any references to these devices having a built-in sp/dif output.  If you're talking about using something that attaches via the USB port, if the player already has the necessary drivers built-in, then rockbox should be able to utilize it.   If the drivers aren't built-in, then there's nothing we can do -- We have no source code for these or any of the other Ingenic+Hiby-based players so are not in a position to be able to update or compile any kernel-level code.   (In violation of the GPL, not that anyone here has standing to enforce it.  Bleh.)

As for simultaneously charging while using the device as a USB host -- if the player has a properly-implemented USB-C port, then yes, it is possible.  If it only has micro-usb, then no.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: ddscentral on October 10, 2020, 12:16:35 PM
For kernel code, I'm pretty sure Hiby OS uses a variant of X1000 reference kernel which is available from Ingenic. Which one can be approximately determined by the compilation date. Reference kernel cannot be directly used to replace device's stock kernel but it should be enough to build additional modules.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on October 10, 2020, 01:41:36 PM
For kernel code, I'm pretty sure Hiby OS uses a variant of X1000 reference kernel which is available from Ingenic. Which one can be approximately determined by the compilation date. Reference kernel cannot be directly used to replace device's stock kernel but it should be enough to build additional modules.

Yes, it's a "variant" -- with mostly unknown changes.  We don't even have the kernel .config file, and there are half a bajillion options that would affect the final binary ABI.

This is not a path I have any intention of undertaking.    IMO that time is far better spent making a native Rockbox port to this platform instead.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: ddscentral on October 10, 2020, 04:37:01 PM
Completely forgot about that.
I wouldn't bother with kernel without a config file either, especially on embedded platforms.
Some firmware developers do leave /proc/config.gz enabled, but that's not the case with hiby.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on October 12, 2020, 12:21:18 PM
I am very interested in the digital spdif audio output feature :). Might spdif be got working in rockbox? Whats this special usb cable needed for spdif output? Can the player be charged/externally powered while using spdif output?

I don't see any references to these devices having a built-in sp/dif output.  If you're talking about using something that attaches via the USB port, if the player already has the necessary drivers built-in, then rockbox should be able to utilize it.   If the drivers aren't built-in, then there's nothing we can do -- We have no source code for these or any of the other Ingenic+Hiby-based players so are not in a position to be able to update or compile any kernel-level code.   (In violation of the GPL, not that anyone here has standing to enforce it.  Bleh.)

As for simultaneously charging while using the device as a USB host -- if the player has a properly-implemented USB-C port, then yes, it is possible.  If it only has micro-usb, then no.

Handy to know about charging while in usb host mode hopeful will work with usb-c :). i guess its too early to know for sure/ask if that the case with these players?

As ever great shame to here about gpl violations :(. Fiio seam to publish the source code what gpl software they mod/use :). Do they miss anything out? I had wondered. If so i guess there a better brand to buy players from for potently future rockbox support if the hardware is compatible?

By spdif i was taking a guess that was want they meant by digital output over usb port??
Quote
Digital (optical) audio output supported. USB-digital output adapter needed (not included).
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on October 12, 2020, 12:40:37 PM
By spdif i was taking a guess that was want they meant by digital output over usb port??

On these Linux-based players, rockbox uses standard Linux sound APIs, so as long as the OF's kernel already has the drivers for the particular audio dongle you want to use, rockbox will be able to utilize it.

(Most audio dongles use standard USB class drivers, but one can never really know in advance)

That said, rockbox isn't set up to be aware of multiple output/playback devices, much less be able to switch them on the fly.  (That's actually going to be one of the challenges in enabling bluetooth on these things..)
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on October 12, 2020, 12:51:52 PM
oh i see. its usb audio interface, not like the audio accessory mode where it some of the pins instead of usb, become analogue stereo signals. i thought digital output was like that but spdif over the usb pins... doh! I understand now, its the option to connect a usb class compliant audio interface to usb host.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on October 12, 2020, 12:56:01 PM
Thanks speachy for the details!  :) I see. bluetooth means a re-write of a fair bit of audio code.

Is the hardware any better designed than the xduooo x3II? No pop, messy power saving of the dac/headphone amp that leads to delay and/or pop sounds in switching tracks, sample rate changes, turn on/off,etc?
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on October 12, 2020, 01:16:40 PM
Is the hardware any better designed than the xduooo x3II? No pop, messy power saving of the dac/headphone amp that leads to delay and/or pop sounds in switching tracks, sample rate changes, turn on/off,etc?

I like the Eros Q/Hifiwalker H2 a _lot_ more than the X3ii.     More compact, a better control layout, and so far, no issues with the audio paths.

(I'm actually pretty disappointed with the X3ii, especially after how unexpectedly awesome the original X3 turned out)

Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on October 17, 2020, 09:50:15 PM
Is the hardware any better designed than the xduooo x3II? No pop, messy power saving of the dac/headphone amp that leads to delay and/or pop sounds in switching tracks, sample rate changes, turn on/off,etc?

I like the Eros Q/Hifiwalker H2 a _lot_ more than the X3ii.     More compact, a better control layout, and so far, no issues with the audio paths.

(I'm actually pretty disappointed with the X3ii, especially after how unexpectedly awesome the original X3 turned out)

Thanks again for the info!

Tempted by Aigo Eros K in blue, else the Q which is £10 cheaper and has wrist strap attachment hole :).
https://www.aliexpress.com/af/AIGO-EROS.html?trafficChannel=af&d=y&CatId=0&SearchText=AIGO+EROS&ltype=affiliate&SortType=default&page=5

hmm i may get a old x3 when a good condition one pops on on ebay after all. shame i avoided it thinking there was audio problems. 2x sd card support would have been so helpful this last few years!

i guess theres still tons for you to do still ;D in porting rockbox to these players. Any micro updates :) would be received with love but otherwise I patiently and keenly wait :)
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on October 17, 2020, 10:51:23 PM
i guess theres still tons for you to do still ;D in porting rockbox to these players. Any micro updates :) would be received with love but otherwise I patiently and keenly wait :)

Yesterday I committed support in the RockboxUtility (no binary builds available as of this writing), complete with patches for the stock firmware images.

A few minutes ago I finished uploading updated bootloader images with some critical fixes for the hotswap and external USB storage support.

It's coming along nicely.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on November 04, 2020, 05:18:22 PM
there due to be £5-7~ cheaper on aliexpress for the 11.11 big aliexpress sale day. £82.48 https://www.aliexpress.com/item/32826674025.html?spm=a2g0o.cart.0.0.6dde3c00P456X6&mp=1

Good time to buy one :).

If i buy one, would it be fairly safe to assume your rockport port may well be ready soonish or in few-6 months? Unlikely to get dropped unless you have life criss,etc?
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on November 04, 2020, 05:30:38 PM
It's ready now.

(I'm not going to claim it's bug-free, but it works well enough for daily use)
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on November 05, 2020, 09:37:09 PM
oh goodie  ;D
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on November 05, 2020, 09:48:25 PM
Does the bluetooth IC support aptx hd? or does bt codec support depend on the OS not the bluetooth IC firmware?
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on November 05, 2020, 09:59:15 PM
Regarding the model you have:
What's the lanyard hole to hang/secure it by, like to use and have? Worth the extra weight? Thanks!
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on November 12, 2020, 11:15:51 PM
Unboxing Video, features close up of lanyard/headphone cable hole loop thing:
https://www.youtube.com/watch?v=xOD2emJ80HY
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: mariocco on November 19, 2020, 06:53:24 PM
Hello! I just got a HIFI WALKER H2. The firmware onboard is 1.3.
I tried the manual install but at boot i got "Updater 1.1" and then file error.
I tried with different firmwares and I replaced the sd card.
Could it be that the "Updater" program that loads the firmware on the unit is defective?
Any fix possible?
Thanks
Mario
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on November 19, 2020, 07:23:16 PM
Hello! I just got a HIFI WALKER H2. The firmware onboard is 1.3.
I tried the manual install but at boot i got "Updater 1.1" and then file error.
Could it be that the "Updater" program that loads the firmware on the unit is defective?

Unfortunately hifiwalker does not have a v1.3 firmware available for download anywhere  (and has not responded to anyone's inquiry about getting it), so we've been unable to figure out what we need to change to generate a working update image.

...Actually I'm pretty sure I know what needs changing, I just don't know what to change it into.

Figuring this out should be pretty straightforward but it will require disassembly so we can get access to the device's serial port.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: mariocco on November 20, 2020, 02:04:23 PM
Thanks. I also wrote to Hifi Walker to see if a copy of firmware 1.3 can be obtained.
By the way

- Do you think this is a failure of the device or simply a characteristic of firmware 1.3?
- Is there any way to "dump" the 1.3 firmware from the player
- Does anyone know what is the difference between 1.2 and 1.3 firmware? I could try to downgrade to 1.2 and install Rockbox but I do not know what I would be missing and there is no way to revert since the stock 1.3 is not available.

Thanks
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: johnb on November 20, 2020, 02:31:19 PM
That's specific to the 1.3 firmware.
I tried multiple other firmware versions, but did not manage to downgrade.

It's likely that 1.3 is checking the 'name' string inside the update image.

I will probably will go and try various name strings (brute force guesses) in the next few days.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on November 20, 2020, 03:11:58 PM
- Do you think this is a failure of the device or simply a characteristic of firmware 1.3?

It could be that there's a hardware incompatibility with firmware v1.3 devices, but more likely they changed the internal name of the player so it can no longer be cross-flashed with the firmware from one of its siblings.

(Speaking of, can you tell me the USB VID/PID of your device?  if you're on linux run 'lsusb' and send the output..)

- Is there any way to "dump" the 1.3 firmware from the player

Not from the outside; Ingenic's tools can only be used to *write* the flash, not read it out.

Taking apart the player one can get access to the serial console, and from a console we can definitely dump things and figure out what needs doing.

- Does anyone know what is the difference between 1.2 and 1.3 firmware? I could try to downgrade to 1.2 and install Rockbox but I do not know what I would be missing and there is no way to revert since the stock 1.3 is not available.

If the existing v1.2 firmware update could be applied onto the v1.3 players, then we wouldn't be having this conversation.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: mariocco on November 20, 2020, 05:03:08 PM
On Linux, lsusb:
ID C502:0023

On Windows (if useful)
USB\VID_C502&PID_0023&REV_????
USB\VID_C502&PID_0023

Thanks
Mario


Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on December 10, 2020, 12:35:06 PM
my egos Q came.
firmware version is 1.8
how might i get rockbox on to it?
with stock firmware there's annoying bug where it turns audio output on and off between track change which causes a pop with my tpa316 amp boad and speakers :(.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: johnb on December 10, 2020, 12:39:09 PM
See the bottom section of this page: https://www.rockbox.org/wiki/AIGOErosQK
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on December 10, 2020, 02:29:20 PM
arr brill. good to see there is now a wiki page. arr i see looks like firmware version woes does not apply to the hardware i have :)
Thank you
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on December 10, 2020, 02:32:45 PM
arr brill. good to see there is now a wiki page. arr i see looks like firmware version woes does not apply to the hardware i have :)
Thank you

Are you saying that the patched v1.8 firmware image doesn't work on your EROS Q (which already has v1.8)?

What is the error?
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: bluebrother on December 10, 2020, 02:41:26 PM
As for installing Rockbox, current development version of Rockbox Utility supports it. There are test binaries available, see the sticky in the Rockbox Utility forum. Shouldn't hurt if that's actually tried (I'm also planning to update those binaries soonish for an even more current experience :) )
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on December 10, 2020, 03:21:46 PM
installed rockbox. its better but there is a pop sound during audio format change of tracks.

Sounds like the audio hardware powering off and back on. These amp boards im using need a source connected all the time. Else there is hiss like u get from cable being not being plugged into source device or a bit like the pop sound from jack plug being pushed into device while amp switched on. Quite annoying and not good enough to use as a audio player for events :(.

I guess its a bug during audio file format change? flac to ogg for example

Perhaps also add setting to keep audio hardware on all the time? so for events, even when not playing music, no audio hardware turn on/off output connect pop.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on December 10, 2020, 03:24:48 PM
arr brill. good to see there is now a wiki page. arr i see looks like firmware version woes does not apply to the hardware i have :)
Thank you

Are you saying that the patched v1.8 firmware image doesn't work on your EROS Q (which already has v1.8)?

What is the error?

i got worried seeing the other persons problem. Didn't know despite same hardware they had different firmware versions. sorry.

yea the default firmware version is 1.8. its what my eros q came with.

its ok. i installed it now but see my other post for pop sound problem.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on December 10, 2020, 03:26:32 PM
As for installing Rockbox, current development version of Rockbox Utility supports it. There are test binaries available, see the sticky in the Rockbox Utility forum. Shouldn't hurt if that's actually tried (I'm also planning to update those binaries soonish for an even more current experience :) )

brill! looking forward to it. Had a look at trying to compile it but in end easier to install manually but a new official release with binarys, would be fantastic!
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on December 10, 2020, 03:46:19 PM
Testing out usb flash drive support :D. Great to a have such a feature at last!! Looking forward to day of hot plug and unplug of different drives.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: bluebrother on December 10, 2020, 04:01:01 PM
brill! looking forward to it. Had a look at trying to compile it but in end easier to install manually but a new official release with binarys, would be fantastic!

I just updated the development binaries mentioned (at least for Windows and macOS). There's no official release yet, but this is getting close. If you run into issues with them please post in the Rockbox Utility forum, I might miss if it's here.

See here: https://forums.rockbox.org/index.php/topic,53588.0.html
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on December 10, 2020, 04:17:34 PM
Thanks! Snag is i don't use windows or mac. At least the last few xduuo x3on ebay, will be easier for people to flash.  :)
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: MRCoolAndLovin on December 16, 2020, 12:22:56 PM
I have been trying to mess with the Hifi Walker H2 1.2 firmware file to try and get it to flash over 1.3.
Unfortunately i'm not positive as to where in the binary is the version enclosed that the updater checks.
I also mailed to ask for the 1.3 firmware file, but no response.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on December 16, 2020, 01:07:58 PM
Unfortunately i'm not positive as to where in the binary is the version enclosed that the updater checks.

The "update.upt" image is actually an ISO9660 filesystem.  If you open it up, you'll find (among other things) a file called 'version.txt', and inside that are model id and version that the updater is expecting/checking.

To figure this out we need to open up one of these v1.3 H2 players, get to the serial console, and dump/extract the updater image from the flash.  From there, we can discern what the updater is looking for.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on February 01, 2021, 10:31:37 PM
What do i look out for on git commits to know if there's updates in the daily builds for this player or usb host support? I searched usb,aigo,eros,etc and didn't see anything related recently. Assuming no little updates recently. Will patiently wait. :)

Oh i know dont ask for updates rule... feel free to delete! Sorry! :-[
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on February 03, 2021, 04:23:50 PM
To figure this out we need to open up one of these v1.3 H2 players, get to the serial console, and dump/extract the updater image from the flash.  From there, we can discern what the updater is looking for.

A few hours of work later, I was able to extract the v1.3 firmware from flash, and generated a patched v1.3 update image with the rockbox bootloader:

   http://download.rockbox.org/bootloader/hifiwalker/H2-v13-patched.upt

Note that this is *not* compatible with the v1.2 players.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: mariocco on February 10, 2021, 07:00:19 PM
I tried the 1.3 firmware (I mean the http://download.rockbox.org/bootloader/hifiwalker/H2-v13-patched.upt) but my player (with firmware onboard 1.3) does not recognize it.
I copied the file in the root of the card and I launched the update from the menu.
It says that no firmware is available.
Any hint?
Thanks!
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on February 10, 2021, 07:11:03 PM
I tried the 1.3 firmware (I mean the http://download.rockbox.org/bootloader/hifiwalker/H2-v13-patched.upt) but my player (with firmware onboard 1.3) does not recognize it.
I copied the file in the root of the card and I launched the update from the menu.
It says that no firmware is available.
Any hint?
Thanks!

Rename the file to update.upt
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: mariocco on February 11, 2021, 06:18:06 PM
Thank you! It works!
Really a great work.
Since you were able to extract it, could you also post the original 1.3 firmware for backup/restore purpose?
Thanks!
Mario
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: dconrad on March 12, 2021, 11:36:43 PM
Just got my player in the mail and got a daily build installed, I'm enjoying trying out all the cool themes!

I think I've found a few issues specific to this port (as far as I can tell), should I post them here or in the bug tracker? They're mostly button behavior related, but one is an issue with audio during playback, so I feel like it's a fairly important one.

I'm trying to get my head around the codebase to see if I can fix one or two myself, but I'm not sure if I'll get anywhere  :o

Edit: or is this still too new to care about bugs/issues?
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on March 13, 2021, 07:32:08 AM
I think I've found a few issues specific to this port (as far as I can tell), should I post them here or in the bug tracker? They're mostly button behavior related, but one is an issue with audio during playback, so I feel like it's a fairly important one.

I didn't put a lot of thought into the button maps, so specific suggestions to improve them are welcome.  Non-trivial bugs are best put directly into the tracker, but there's no harm in mentioning things here.

You will need to explain what you mean by "an issue with audio during playback"  The only issue I'm personally aware of is a crackle/dropout during high system load (made much worse by high-bitrate audio files); This same issue affects many (most?) of the "hosted" players, and fixing it requires a non-trivial rewrite of the audio driver.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on March 13, 2021, 07:36:41 AM
speachy, what about the problem, i previously mentioned?:

Quote
Sounds like the audio hardware powering off and back on. These amp boards im using need a source connected all the time. Else there is hiss like u get from cable being not being plugged into source device or a bit like the pop sound from jack plug being pushed into device while amp switched on. Quite annoying and not good enough to use as a audio player for events :(.

I guess its a bug during audio file format change? flac to ogg for example

Perhaps also add setting to keep audio hardware on all the time? so for events, even when not playing music, no audio hardware turn on/off output connect pop.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on March 13, 2021, 08:56:16 AM
Unfortunately the audio codec powering off / on is a quirk shared by all of the hibyos-based players.

But if this is happening between track changes (presumably due to changing sample rates) it's nothing we have any control over -- our only recourse is to completly mute the audio output, but that takes ~1-2s to switch, meaning you'll lose gapless playback, have voice prompts cut off, and so forth.

(One thing you could try is fixing the output sample rate; Settings/Playback/Frequency -- it defaults to automatic)

Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: dconrad on March 13, 2021, 09:19:02 AM
I think I've found a few issues specific to this port (as far as I can tell), should I post them here or in the bug tracker? They're mostly button behavior related, but one is an issue with audio during playback, so I feel like it's a fairly important one.

I didn't put a lot of thought into the button maps, so specific suggestions to improve them are welcome.  Non-trivial bugs are best put directly into the tracker, but there's no harm in mentioning things here.

You will need to explain what you mean by "an issue with audio during playback"  The only issue I'm personally aware of is a crackle/dropout during high system load (made much worse by high-bitrate audio files); This same issue affects many (most?) of the "hosted" players, and fixing it requires a non-trivial rewrite of the audio driver.

Ok, here goes:

I think I found two different audio bugs - the first one is the one fossphile had mentioned, where there's a click/pop when playing/pausing and switching between tracks. I need to be in a quiet room, but I can definitely hear it with just regular headphones. It does sound like the amp is turning on and off or something, like it's jumping to some DC bias from zero.

It sounds like you already know abut the other one - a crackling during quiet parts of a song or when the volume is extremely low, like one step above off. I thought it was the same thing as the popping between songs to be honest, like the amp is turning on/off really quickly in extremely quiet parts of the song, but that might just be when I notice it. I'll make some different bitrate files to see if it correlates like you say. It's probably the same issue you're already aware of.

It seems to crackle/pop consistently the same every time for the same audio track, at the same volume level. If the volume changes, the pattern changes. I'll try to get an example file.

(One thing you could try is fixing the output sample rate; Settings/Playback/Frequency -- it defaults to automatic)

Setting the frequency to any value doesn't seem to have any effect on the popping or the crackling  :-\

The button stuff is much more trivial:

In the Settings menu and the Context menu, the back button exits to the Main Menu or the While Playing Screen, respectively, instead of going one level up. It works correctly when exiting from a selection dialogue, like if I'm in Crossfeed (Select Off/Simple/Custom), hit back and it goes back to the Crossfeed menu, but if I hit back again, it goes all the way to the main menu instead of Sound Settings.

I can't lock the buttons while anywhere except the while playing screen, I'm not sure if this is intended or a bug. For instance, on the main menu I would think I could hit the power button to lock all buttons just like in the wps, but nothing happens.

If the screen is off and buttons are unlocked, hitting the power button wakes the screen and also locks the buttons. I would kind of expect it to only wake the screen, like when the power button is pushed and the screen is off, check the lock state and only go to unlocked or something.

This one might just be inherently not how Rockbox works, but I would kind of expect the power button to immediately sleep the screen like the original firmware. Not sure if that would be complicated to implement or not.

For that matter, I think I would expect the other buttons to not wake the screen, but volume up/down to work when locked without turning the screen on. I figured out how to get the behavior like I would expect eventually, but it took a lot of digging in the settings and trying to figure out what different settings did. Does Rockbox have kind of a "default setup" for each device type? Maybe those settings could be set up that way by default to mimic something like the original firmware's behavior.

Oof! Sorry for the long post!

EDIT: Completely forgot to note build number - 2743bde09b-210312
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on March 13, 2021, 09:47:59 AM
thanks for the replys,speachy & dconrad.
Long posts are good ;).

trying the fixxed sample rate 44.1khz. hmm does not seam to be poping between track changes.... been so long i forget what files i tested with... try switching between flac, opus, mp3. ill see...
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: dconrad on March 13, 2021, 09:50:02 AM
It seems to crackle/pop consistently the same every time for the same audio track, at the same volume level. If the volume changes, the pattern changes. I'll try to get an example file.

Ok, try this file at -73dB with your most sensitive headphones: https://dconrad.neocities.org/assorted_files/BeginningClip_Glad%20Rags%20-%20Wonder%20Under%20-%2003%20The%20World%20is%20Waiting.flac (https://dconrad.neocities.org/assorted_files/BeginningClip_Glad%20Rags%20-%20Wonder%20Under%20-%2003%20The%20World%20is%20Waiting.flac)

I think it demonstrates both popping and crackling (or are they the same thing? I'm not sure!)
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: saratoga on March 13, 2021, 10:39:21 AM
The port uses software volume control (I guess they didn't include an analog gain), so at -73dB you have very little dynamic range left and should expect noise.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: dconrad on March 13, 2021, 10:52:03 AM
The port uses software volume control (I guess they didn't include an analog gain), so at -73dB you have very little dynamic range left and should expect noise.

That would certainly explain what I'm hearing. So the hardware is running full blast and Rockbox is reducing the volume of the data that it's sending to it?
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: dconrad on March 13, 2021, 06:44:11 PM
In the Settings menu and the Context menu, the back button exits to the Main Menu or the While Playing Screen, respectively, instead of going one level up. It works correctly when exiting from a selection dialogue, like if I'm in Crossfeed (Select Off/Simple/Custom), hit back and it goes back to the Crossfeed menu, but if I hit back again, it goes all the way to the main menu instead of Sound Settings.


I managed to get the Back button to actually go back a level in the Settings menu, but no dice yet in the playlist submenu of the WPS Context menu.

In apps/keymaps/keymap-erosq.c:

Require Back button be held in the mainmenu context, and just-to-be-sure, do ACTION_STD_CANCEL on Back button release in the standard context.

Code: [Select]
/*
 * The format of the list is as follows
 * { Action Code,   Button code,    Prereq button code }
 * if there's no need to check the previous button's value, use BUTTON_NONE
 * Insert LAST_ITEM_IN_LIST at the end of each mapping
 */
static const struct button_mapping button_context_standard[]  = {
    { ACTION_STD_PREV,       BUTTON_SCROLL_BACK,              BUTTON_NONE },
    { ACTION_STD_PREV,       BUTTON_PREV,                   BUTTON_NONE },
    { ACTION_STD_PREVREPEAT, BUTTON_PREV|BUTTON_REPEAT,     BUTTON_NONE },
    { ACTION_STD_NEXT,       BUTTON_SCROLL_FWD,             BUTTON_NONE },
    { ACTION_STD_NEXT,       BUTTON_NEXT,                   BUTTON_NONE },
    { ACTION_STD_NEXTREPEAT, BUTTON_NEXT|BUTTON_REPEAT,     BUTTON_NONE },
    { ACTION_STD_OK,         BUTTON_PLAY|BUTTON_REL,        BUTTON_PLAY },
    { ACTION_STD_CANCEL,     BUTTON_BACK|BUTTON_REL,        BUTTON_BACK },
    { ACTION_STD_CONTEXT,    BUTTON_MENU|BUTTON_REPEAT,     BUTTON_MENU },
    { ACTION_STD_MENU,       BUTTON_MENU|BUTTON_REL,        BUTTON_MENU },

/*    ACTION_STD_QUICKSCREEN,
 *    ACTION_STD_KEYLOCK
 *    ACTION_STD_REC
 *    ACTION_STD_HOTKEY
 */

    LAST_ITEM_IN_LIST
}; /* button_context_standard */

static const struct button_mapping button_context_mainmenu[]  = {
    { ACTION_TREE_WPS,       BUTTON_BACK|BUTTON_REPEAT,     BUTTON_BACK }, // need to hold, otherwise causes
       // back to always go to main menu root

    LAST_ITEM_IN_LIST__NEXTLIST(CONTEXT_TREE),
}; /* button_context_mainmenu as with sansa clip mapping - "back" button returns you to WPS */

I kind of expected the button context in the Settings to be, well, settings, rather than mainmenu. Is that intentional? I had a lot of trouble figuring out what context applied where. Is there an easy way to find that information?

I would put this up on gerrit, but I can't get it to accept my ssh key for some reason.

EDIT: okay, one more thing: The playlist menu appears to also be mainmenu context, however ACTION_STD_CANCEL behaves differently there. I'm not sure why.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: speachy on March 13, 2021, 10:35:29 PM
In the Settings menu and the Context menu, the back button exits to the Main Menu or the While Playing Screen, respectively, instead of going one level up. It works correctly when exiting from a selection dialogue, like if I'm in Crossfeed (Select Off/Simple/Custom), hit back and it goes back to the Crossfeed menu, but if I hit back again, it goes all the way to the main menu instead of Sound Settings.

This should now be fixed.

I can't lock the buttons while anywhere except the while playing screen, I'm not sure if this is intended or a bug. For instance, on the main menu I would think I could hit the power button to lock all buttons just like in the wps, but nothing happens.

This too (in general)
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: saratoga on March 14, 2021, 10:46:16 AM
The port uses software volume control (I guess they didn't include an analog gain), so at -73dB you have very little dynamic range left and should expect noise.

That would certainly explain what I'm hearing. So the hardware is running full blast and Rockbox is reducing the volume of the data that it's sending to it?

Yeah. I don't know why, but a lot of these hifi players seem to pick fancy DACs but forget that people might want a way to change the volume.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: dconrad on March 14, 2021, 11:20:33 AM
In the Settings menu and the Context menu, the back button exits to the Main Menu or the While Playing Screen, respectively, instead of going one level up. It works correctly when exiting from a selection dialogue, like if I'm in Crossfeed (Select Off/Simple/Custom), hit back and it goes back to the Crossfeed menu, but if I hit back again, it goes all the way to the main menu instead of Sound Settings.

This should now be fixed.

I can't lock the buttons while anywhere except the while playing screen, I'm not sure if this is intended or a bug. For instance, on the main menu I would think I could hit the power button to lock all buttons just like in the wps, but nothing happens.

This too (in general)

I'm not seeing either of these fix the issues here unfortunately.

Unless I'm not understanding correctly (very real possibility hah), the context in the settings and context menu is mainmenu, and the flow goes mainmenu -> (tree, if enabled) -> list -> standard. I found that the issue was the ACTION_TREE_WPS action in the mainmenu context, if I moved that to a held button then it started working.

EDIT: I added a change in gerrit to fix the above.

I tested out the power button yesterday when I was messing with it and any other action in that context can be assigned to the power button, but ACTION_STD_KEYLOCK doesn't work for some reason.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: dconrad on March 14, 2021, 03:45:40 PM
Yeah. I don't know why, but a lot of these hifi players seem to pick fancy DACs but forget that people might want a way to change the volume.

Is it that it's just not available in the OS, or that it's not physically hooked up? I hope it's the former!
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: saratoga on March 14, 2021, 05:55:42 PM
Yeah. I don't know why, but a lot of these hifi players seem to pick fancy DACs but forget that people might want a way to change the volume.

Is it that it's just not available in the OS, or that it's not physically hooked up? I hope it's the former!

Looks like they forgot to include a volume circuit.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on March 14, 2021, 07:12:38 PM
Its a shame it has this design flaw. How is the xduoo x3 II looking now? I know it had a problem with power saving causing a pop and having to hacked around.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: dconrad on March 14, 2021, 08:55:04 PM
Yeah. I don't know why, but a lot of these hifi players seem to pick fancy DACs but forget that people might want a way to change the volume.

Is it that it's just not available in the OS, or that it's not physically hooked up? I hope it's the former!

Looks like they forgot to include a volume circuit.


That's a major bummer. I do see a Low/High gain setting in the original firmware, maybe that's a hardware function? Though I just tried it with some bluetooth headphones and the gain setting still has an effect on them, so I doubt it.

I just tried an A/B comparison with the original firmware (using my roommate as a test subject, hah!), and the original firmware can definitely play the same song quieter than when the pops and crackles start on Rockbox, so it's definitely possible. I reckon there's just some magic there that's not apparent yet.

Side note, I never really tried to even use the original firmware until now, holy cow it's bad! Glad Rockbox is taking shape on this thing  ;D
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: dconrad on March 16, 2021, 10:05:07 PM
What if in the WPS, holding the Play button brought up the Playlist rather than Stop? The rationale being, if you get to it from the Context Menu it's 3 button presses, which seems like a lot to get to the current playlist. Also, I'm going to go out on a limb and say Stop is probably not a widely used feature. I would think most people would Pause instead.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: JimZipCode on April 04, 2021, 01:59:10 PM
I like the Eros Q/Hifiwalker H2 a _lot_ more than the X3ii.     More compact, a better control layout, and so far, no issues with the audio paths.

(I'm actually pretty disappointed with the X3ii, especially after how unexpectedly awesome the original X3 turned out)

Speachy, can you elaborate on this?  I've had an Xduoo X3ii for two years, and I haven't been displeased with it.  What disappointed you? 

I thought the control layout *looked* crazy when I saw it.  But, surprisingly, it's been intuitive to manipulate by touch (ie without looking at it).

Anyway – I'm always on the lookout for the next player.  (Esp since my X3ii now has some loose part rattling around inside of it: might be on its way to becoming unusable.)  If the model in this thread is better in some specific way, that's super interesting.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: JimZipCode on April 04, 2021, 02:01:51 PM
Unboxing Video, features close up of lanyard/headphone cable hole loop thing:
https://www.youtube.com/watch?v=xOD2emJ80HY

That video is marked private.  Do I have to request permission to view?

Anyway, here are three other unboxing / intro vids:
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: dconrad on May 02, 2021, 10:35:32 PM
I thought I would update this thread in case anyone here hasn't been following the commit progress as closely as I have for this player - the "big bug" (for me anyway) of the crackling/popping at quiet volumes has been fixed! Gerrit #3312 (https://gerrit.rockbox.org/r/c/rockbox/+/3312).

So I definitely recommend getting a new build if you haven't updated in a while.

Here's a couple other changes that might be of interest:
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on May 03, 2021, 05:16:37 AM
Unboxing Video, features close up of lanyard/headphone cable hole loop thing:
https://www.youtube.com/watch?v=xOD2emJ80HY

That video is marked private.  Do I have to request permission to view?

Anyway, here are three other unboxing / intro vids:
  • https://www.youtube.com/watch?v=2CrqLUjyz0I
  • https://www.youtube.com/watch?v=kKWQ20GTPiQ
  • https://www.youtube.com/watch?v=dxUgDLOsMI4  (FF to 3:05)
idk why it is marked as private. its not my video. shame :(
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: fossphile on May 03, 2021, 05:39:13 AM
I thought I would update this thread in case anyone here hasn't been following the commit progress as closely as I have for this player - the "big bug" (for me anyway) of the crackling/popping at quiet volumes has been fixed! Gerrit #3312 (https://gerrit.rockbox.org/r/c/rockbox/+/3312).

So I definitely recommend getting a new build if you haven't updated in a while.
Great  news! I look forward to trying it :).

Here's a couple other changes that might be of interest:
  • Line Out volume can now be set via the volume limit. The line out at maximum is very loud, so now it can be tamed. Gerrit #3259 (https://gerrit.rockbox.org/r/c/rockbox/+/3259)
  • Text entry controls work as expected now. Gerrit #3260 (https://gerrit.rockbox.org/r/c/rockbox/+/3260)
  • Volume dB scale is now numerically (approximately) correct. I might be the only one in the world that cares about this, but the numerical dB scale is now at least within reason of the actual dB of the output signal (referenced to maximum volume). Gerrit #3328 (https://gerrit.rockbox.org/r/c/rockbox/+/3328)

Calibrated dB scale is very handy to me. Did wonder if dB scales in products,DAPs where calibrated. handy to be able to set output vol. I do find a high output voltage is useful for sound systems and car DSPs. They need the higher level and helps to bury noise floor. Great to have a choice about output level. I hope its a separate volume control not tired to headphone output volume and keys.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: dconrad on May 03, 2021, 08:22:20 AM
Calibrated dB scale is very handy to me. Did wonder if dB scales in products,DAPs where calibrated. handy to be able to set output vol. I do find a high output voltage is useful for sound systems and car DSPs. They need the higher level and helps to bury noise floor. Great to have a choice about output level. I hope its a separate volume control not tired to headphone output volume and keys.

The line out volume is set by the Maximum Volume Limit under Sound Settings, so it can be all the way to 0dB (maximum) or -74dB if you wish. It's independent of the regular volume setting for headphones, but it is still the Maximum Volume Limit that the headphone volume won't go above.

Just be aware you can't have both headphones and line out plugged in at the same time - it will prefer the headphone level to protect them (and your ears!) if both are plugged in.

"0dB" is about 6.2 dBV with a full-scale tone from the Line Out, make of that what you will.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: Oktan on May 03, 2021, 09:29:12 AM
I can't find a way to set repeat, shuffle and so on on the fly rather than having to go through the playback menu which is kinda cumbersome. Am I just not understanding Rockbox, or is this something that simply hasn't been implemented for this player yet? It doesn't have that many buttons so I guess it would need to be implemented through some button combination.
EDIT: Some themes seem to specify functionality mapped to a "hold button", does that have a mapping yet?
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: dconrad on May 03, 2021, 10:12:45 AM
I can't find a way to set repeat, shuffle and so on on the fly rather than having to go through the playback menu which is kinda cumbersome. Am I just not understanding Rockbox, or is this something that simply hasn't been implemented for this player yet? It doesn't have that many buttons so I guess it would need to be implemented through some button combination.

Somebody else might be able to chime in since I don't regularly use these features, but the fastest way I know if is to go into the playback settings via the Context Menu (hold Menu on the While Playing screen). Unless that's what you're already talking about?
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: Oktan on May 03, 2021, 10:14:32 AM
I can't find a way to set repeat, shuffle and so on on the fly rather than having to go through the playback menu which is kinda cumbersome. Am I just not understanding Rockbox, or is this something that simply hasn't been implemented for this player yet? It doesn't have that many buttons so I guess it would need to be implemented through some button combination.

Somebody else might be able to chime in since I don't regularly use these features, but the fastest way I know if is to go into the playback settings via the Context Menu (hold Menu on the While Playing screen). Unless that's what you're already talking about?
Yeah, that's what I was talking about. I'm pretty sure there would be a faster way to do it.
By the way, edited my last post before I noticed that you had replied. Some themes specify functionality mapped to a "hold button", is that something that has been set up as of yet?
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: dconrad on May 03, 2021, 10:39:22 AM
Yeah, that's what I was talking about. I'm pretty sure there would be a faster way to do it.
By the way, edited my last post before I noticed that you had replied. Some themes specify functionality mapped to a "hold button", is that something that has been set up as of yet?

Oh, yeah to my knowledge nothing like that has been set up yet. I'm not familiar with what you're describing, maybe someone more knowledgeable about that will chime in.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: Oktan on May 03, 2021, 10:58:00 AM
Yeah, that's what I was talking about. I'm pretty sure there would be a faster way to do it.
By the way, edited my last post before I noticed that you had replied. Some themes specify functionality mapped to a "hold button", is that something that has been set up as of yet?

Oh, yeah to my knowledge nothing like that has been set up yet. I'm not familiar with what you're describing, maybe someone more knowledgeable about that will chime in.
It's apparently some button you're supposed to hold down to access certain features. In the theme FreshOS this is used to display the album artwork.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: amachronic on May 03, 2021, 05:59:23 PM
Normally the hold switch is a slider that you can flip back & forth, it locks the other keys so you don't accidentally press them in your pocket. It's like a screen lock, but for physical buttons. Mostly you see it on older devices. It seems it's not very popular anymore.
Title: Re: AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2
Post by: rayjgu3 on May 06, 2021, 06:41:32 AM
Got me a surfans f20. Rockbox loaded, it boots and plays fine on everything I plugit into headphones speakers but I have a pair of speakers it just won't work with. Changed the cord several times, each time original firmware  plays just fine but rockbox won't. Any ideas I am stumped.