LED (VFD) Displays in LibreELEC

**chewitt** · October 28, 2018 at 5:46 AM Official Post

@5chatten @The_Coolest I have some openvfd package changes prepared for mainline that need to be tested on the older image - I've set a legacy image build running and will look this evening - then will PR if all is good.

See driver: add openvfd package · chewitt/LibreELEC.tv@248185c · GitHub

bigboo · November 5, 2018 at 10:27 AM

So this feature will be added in next libreelec beta image?

**chewitt** · November 5, 2018 at 2:00 PM Official Post

I had an eventful weekend, busy start to the week, and will be travelling for the rest of the week. There's a slim window this evening to test and then PR something, but no promises (sorry).

bigboo · November 5, 2018 at 6:46 PM

Ah don't worry, I'll wait!

charleski · November 16, 2018 at 12:02 PM

Just posting this in case anyone else makes the same mistake.

I'd been having problems with my install of LE and decided to wipe it and set up a new one. I'm using kszaq's 8.2.2.3 release and decided to stick with it as I'd got everything working on it. Everything went fine until I tried to get the VFD working again, as installing the driver stubbornly kept producing

Code

Open device failed.
: No such file or directory

errors despite using the vfd.conf file that had worked before. After getting frustrated for a few hours I found The Coolest's post on page 7 and decided to try downloading the dtb's attached, even though I thought I had the right one already (ethernet and wifi were working fine).

Switched the dtb and Boom, the vfd works. I must have managed to download one without the generic entry that's needed.

Many thanks to The Coolest for his work here.

Ico747 · December 5, 2018 at 6:18 PM

@The Coolest My device is Zoomtak Upro based on S912.

Controller chip if FD628. Extracted from stock android image dts is attached.I suppose the node for FD628 driver is:

m1-vfd {

compatible = "amlogic,m1-vfd";

dev_name = "m1-vfd.0";

status = "okay";

vfd_stb_pin = <0x35 0x49 0x0>;

vfd_clk_pin = <0x35 0x47 0x0>;

vfd_data_pin = <0x35 0x48 0x0>;

};

Is it correct that the configuration file should contain

vfd_gpio_clk='1,73,0'

vfd_gpio_dat='1,71,0'

vfd_gpio_stb='1,72,0'

The rest in config file I hope to find experimenting. Do you have better proposal?
dts.txt

Galathorne · December 6, 2018 at 2:03 PM

Quote from Sholander

My model X92 (q201 3/32G) is on the list, and have FD628 chip, but...

Running 8.90.4, and installed "fd628 service" Kodi add-on and nothing shows on my display.

What do you need me to send you to get it to work?

Does using differnet dtb images matter? My box runs OK with these images:

gxm_q200_3g.dtb, gxm_q201_3g.dtb and gxm_q200_3g_x92.dtb.
Im using now gxm_q201_3g.dtb -> no display.

Edit:

Well, I am sorry for bothering you. Solved my problem with changing my dtb image to

gxm_q200_3g_x92.dtb and now my display works same like in Android

Display More

Quote from The Coolest

Sholander

Make sure that you use the X92 DTB. Index of /releases/dtb/S912

Edit: As far as I'm aware, the main difference between Q201 and Q200 is the ethernet connection (100M vs 1G).

[8.90.4] LibreELEC 9.0 Alpha for S905/S912 devices

gxm_q200_3g_x92.dtb should get the clock working,

The link to download the DTB no longer works. Been struggling for days trying other ways to get the correct DTB. I need to fix my display and my remote (getting errors when trying to capture keys, found out the old DTB I have is also to blame for this).

Is there a working link available? Else, can you please share the file again?

**The Coolest** · December 6, 2018 at 2:24 PM

Ico747 It should be

Code

vfd_gpio_clk='0,71,0'
vfd_gpio_dat='0,72,0'
vfd_gpio_stb='0,73,0'

Galathorne I can't guess what version of LE you are running, sorry.

samura · December 8, 2018 at 11:58 PM

@The Coolest

Can see analyze this dtb.img pls? It's my own dump from my TAP1 1G box because I've been struggling to get LCD working properly with arthur-liberman's vdf.conf (lcd stays all messed up)

Pls help me

**The Coolest** · December 9, 2018 at 12:09 AM

samura Hi,

I've spent a long time trying to figure out the way the Tap1 display works. A user spent a while trying to help me, but eventually he gave up.

I'll send you a PM with some instructions, but I can't guarantee that I will be able to make it work correctly without an actual device to do my testing on.

onexzero · December 13, 2018 at 5:39 AM

Hi~

My device is Krizer S912 3/16g model, and it has HBS658 Chip.

Please let me know how to revive my clock display.

I attached dtb an dts.

Thanks.

**The Coolest** · December 13, 2018 at 6:57 AM

onexzero

Could you please post the full brand and model? A link to the device would be useful.

The pin configuration is identical to the m9-pro-u2c-x-vfd.conf, so I would suggest you try that first and let me know if it works properly or not.

onexzero · December 13, 2018 at 8:07 AM

Quote from The Coolest

onexzero

Could you please post the full brand and model? A link to the device would be useful.

The pin configuration is identical to the m9-pro-u2c-x-vfd.conf, so I would suggest you try that first and let me know if it works properly or not.

Thanks for fast reply.

I'll try tonight with that vfd.conf.

Please refer here -> Krizer - Creating a smart world

Android 7.1.2

Octa-Core, 64 Bit, ARM Cortex-A53, CPU frequency 2.0GHz

Penta core ARM Mali-T820

DDR 2GB,3GB / Flash 16GB

USB HIGH SPEED 2.0

WIFI 2.4Ghz / 5Ghz BT 4.0

HDMI 1.3 / 1.4 / 2.0

Support 4K

**The Coolest** · December 13, 2018 at 9:44 AM

onexzero Thanks.

From the looks of it, the vfd.conf I suggested should work just fine.

The display looks identical, and so does the DTB configuration.

Please let me know if it works, and I'll update the file in the repository to include the U5X+S as well.

Axee · December 13, 2018 at 12:52 PM

I have TAP PRO S912, is there any possibility to working vfd display under Libreelec ?

**The Coolest** · December 13, 2018 at 1:49 PM

Axee I'll need the Android DTB from the box.

Axee · December 13, 2018 at 3:24 PM

Sorry for my noobism, i tried to copy it from dev/system/ but i cannot copy it for some reason. Is there any other way ?

**The Coolest** · December 13, 2018 at 3:45 PM

Axee the info is in the OP (1st post) of this thread.

LED (VFD) Displays in LibreELEC

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