AGPTEK Rocker

[Eugen5s]

Is there a way to backup the firmware for the Benjie T6? My T6 came with the Firmware ver 1.07Beta.

I was also planning to install the AGPtek Version 1.2, but is there any great noticeable difference between the AGPtek and the Benjie?

[TyphoonScotland]

Is there a way to backup the firmware for the Benjie T6? My T6 came with the Firmware ver 1.07Beta.

You don't actually need to, the Bootloader that comes with Rockbox is a Dual Boot, therefore your Benjie T6 will boot both Rockbox and the Original Player software (Hiby Player).

I was also planning to install the AGPtek Version 1.2, but is there any great noticeable difference between the AGPtek and the Benjie?

As stated above, hardware wise they are exactly the same. There is no noticeable difference between the devices or firmwares. Both are interchangeable.

[lncdoc]

Firstly, Thank you everyone for the excellent work on this port; it's working better than I dared hope on my Rocker v2 (OF 1.2).

When I got the player 2 days ago, I was a bit disappointed with the relatively high noise floor with low impedance IEMs, such as Klipsch X11 or Vsonic VC1000, using the OF (but also Rockbox). I thus had a look at the datasheet and it suggests it should be able to do better, so I had a look at the detailed debug information at https://www.rockbox.org/wiki/AgptekRocker (again, thank you very much for posting that) and figured I'd try playing with the gain. It turns out the unit sounds WAY better (at least to me, your mileage may vary), with the gain set to 0 (000 binary), which corresponds to 0.3959 gain according to the datasheet instead of the default 0.6047 (011 binary, as in 3).

As my programming skills (outside of technical computing like Matlab and R) are minuscule, I just hard-coded this into the rocker_codec.c in rockbox-wodz/firmware/drivers/audio/ during the codec initialization by adding 2 lines:

(beginning of snippet)

void audiohw_preinit(void)
{
    long int hp = 2;
    long int csgain = 0;

    alsa_controls_init();
    hw_open();

    /* Output port switch set to Headphones */
    alsa_controls_set_ints("Output Port Switch", 1, &hp);
    alsa_controls_set_ints("CS42L51 Gain", 1, &csgain);
}

(end of snippet)

Please feel free to either make use of this or ignore it, but it's made the player usable with low impedance IEMs at low volumes for me, when it was painfully noisy before, so I figured I'd share this, as I didn't see any such option implemented yet (my apologies if I just overlooked something). Would be very cool to add a "gain" setting in the sound menu!

All the best, and again, thanks for all the work!

[rdtyphn]

Please feel free to either make use of this or ignore it, but it's made the player usable with low impedance IEMs at low volumes for me, when it was painfully noisy before, so I figured I'd share this, as I didn't see any such option implemented yet (my apologies if I just overlooked something). Would be very cool to add a "gain" setting in the sound menu!

Great, this has been my main issue with the player, thank you!

[JimZipCode]

(end of snippet)

Please feel free to either make use of this or ignore it, but it's made the player usable with low impedance IEMs at low volumes for me, when it was painfully noisy before, so I figured I'd share this

Awesome stuff.

Does Rockbox have to be re-compiled after this change?  Or can it be made "manually" in the files that Milardo has provided via zip?

Wodz, What you've done so far is awesome.  Thanks so much for it.

[poster79]

Great News ! there's life in Rockbox yet.


I've just a couple of questions before I order BENJIE T6 from Aliexpress.   (BENJIE T6 and AGPTek Rocker are exact same device)

How is battery life with Rockbox installed ?  I understand that battery life with the default firmware isn't great  - c. 10 hours ?   Is it any better with Rockbox installed ?

I think I read that a user had an issue with the font being too small. Does resizing of fonts work with AGPTek Rocker ?  In fact, is there any significant functionality which isnt working?

Finally, a worthy successor to my Sandisk  Clip with Rockbox !

[Пепсі Микола]

Good day,Benjie T6 click the volume does not work,only a long tap 

[wodz]

It works. The single step is tiny however.

[Пепсі Микола]

It works. The single step is tiny however.

can not be improved?
does not cause inconvenience,but I would like better.
Rockbox very very good   

[Duceboia]

Mine lasted just more of 8 hours with xduuo nx1 AMP and Superlux 681evo. Playback continous from huge playlist.
Using Milardo files(THANKS MAN).

[gomezz]

Used mine over a work day yesterday.  Running time 6h 11m split over a morning and an afternoon session.  Play time was 4h give or take a couple of minutes so for the remainder of the afternoon had to switch back to using my Clip+.

It does not seem possible to use Rockbox while it is charging.  Is this a known issue?

Also, when recharging Rockbox never reports more than 90% charged even after several hours?

[wodz]

It does not seem possible to use Rockbox while it is charging.  Is this a known issue?

Also, when recharging Rockbox never reports more than 90% charged even after several hours?

Could you be more specific about not possible to use Rockbox while charging? If you mean charging without entering usb mass storage mode simply hold select while plugging cable.

As of reported charge, voltage of the battery is reported by underlying OS (linux). It does not report SOC (state of charge). The mapping of voltage<->percentage of charge available is totally uncalibrated and assumed linear from 3.4 to 4.2V which simply is not true for li-ion. If someone run battery_bench plugin and provide results I can correct this.

[diegopau]

Hi guys,

I am also thinking on getting a Benjie T6 now that there is Rockbox support (the battery of my old Clip Zip is giving up).

Those reports on battery duration are a bit worrisome, but it wasn't clear to me if you are testing using bluetooth or if you are using wired headphones. I expect the duration using bluetooth much less and I am interested in how long it last using just wired headphones.
I guess that duration also depends on what file you are playing as some audio formats might be heavier in CPU and memory card reading. If i remember correctly the Sansa Clip Zip has a 290mAh battery, and the Benjie T6/Rocker has a 600 mAh, so it is disappointing to know that it last less than the clip zip with double battery size!

One more doubt: do you know if the Benjie T6 has the exact same battery than the Rocker (same manufacturer)?

Thank you in advance

[gomezz]

It does not seem possible to use Rockbox while it is charging.  Is this a known issue?

Also, when recharging Rockbox never reports more than 90% charged even after several hours?

Could you be more specific about not possible to use Rockbox while charging? If you mean charging without entering usb mass storage mode simply hold select while plugging cable.

Thanks for the tip.

[pechenyh]

 If someone run battery_bench plugin and provide results I can correct this.

Here is my battery bench (Benjie T6, no bluetooth)
link to battery_bench.txt: https://yadi.sk/i/QvYpXhjz3WYHgZ

I really do not understand how it turned out 6:50 because in daily use it works about 4 hours