How to configure VFD

JamesBond · 18 May 2020 09:26

Ok, as I look in the addon git sources I can see that is a few python scripts to use the already running driver/service, so must be a way of controlling some other way to turn the icons on/off.
I’ll investigate further and see my options, thanks.

berndh · 16 June 2020 08:34

Hi TheCoolest,

I have a Vontar X3 S905x3 box. Any idea which vfd.conf I need to use? I’ve tried the hk1-x3-vfd.conf, as somebody claimed this is the exact same box. I do see the clock during boot up, but once Kodi is shown the clock disappears immediately.

dmesg: shows:
OpenVFD: Select FD628 controller
OpenVFD: SW SPI 3-wire interface failed to intialize. Invalid CLK (475), DAT (474) or STB (-2) pins

So I changed the STB to 0 and then I get the same behavior, but no error message anymore in the dmesg:
OpenVFD: Select FD628 controller
OpenVFD: SW SPI 3-wire interface intialized (LSB mode)

Thanks for making this possible.

berndh · 16 June 2020 11:10

Ahhhh, found it. I had the advanced settings on in the Addon. After disabling that I get the time and the network icons.

Thanks. Problem solved

atirage21 · 2 July 2020 17:47

Same vfd have also X88king, and not going with config from A95x-R2 and with installed openvfd. Maybe also need this device customized dtb for vfd.

TheCoolest · 2 July 2020 20:47

I would need a screenshot of the following command in Android’s terminal:
cat /sys/kernel/debug/gpio

atirage21 · 3 July 2020 17:46

Here is full dmesg.log (169.8 KB)

atirage21 · 3 July 2020 18:23

TheCoolest · 3 July 2020 19:02

Try this file and let me know how it works. If it still doesn’t work, post dmesg | paste and systemctl openvfd status | paste URLs
x88-king-vfd.conf (1.2 KB)

atirage21 · 3 July 2020 19:29

VFD now is started to run on coreelec. It is going nice timer. Usually under android is turn on also the white led of top incsription “X88KING” on cover box, but not missing for me and maybe others (too blinding of room). For me is now good setting of vfd. Thank you @TheCoolest ! Maybe it will be possibility for changing of this white led on top cover for RTC baterry or FAN (but in this time it is OK that is power-off of this 2-pined white led on top cover).

Outputs from command are:

dmesg | paste: http://ix.io/2qNA

systemctl openvfd status | paste: Unknow operation openvfd!

TheCoolest · 3 July 2020 22:30

Thanks for testing. I’ll add the X88 King config file to the vfd repository.
Regarding the top led, I don’t think it’s VFD related, there must be some other way to control it.

atirage21 · 7 July 2020 19:36

you had true, top led is function of booting proces before a turning of led display on android.

knaerzche · 12 July 2020 21:56

@TheCoolest
I’m using openvfd for RK devices and can confirm it works well. However: I noticed gpios won’t be taken from vfd.conf since some amlogic specific properties are not available in RK devicetrees … so I’m configuring the driver via devicetree only - see: https://github.com/knaerzche/LibreELEC.tv/blob/libreelec-9.2/projects/Rockchip/patches/linux/rockchip-4.4/linux-1002-rk322x-dts.patch#L23-L30 - I just couldn’t find out what the correct syntax for the vaules of vfd_chars and vfd_dot_bits would be - so: can you guide me?

TheCoolest · 14 July 2020 00:26

They are a byte array, if I remember correctly.

github.com

arthur-liberman/linux_openvfd/blob/master/driver/openvfd_drv.c#L783


	if (!(pdata->dev)) {
		pr_error("platform dev is required!\n");
		goto get_param_mem_fail;
	}

	pdata->dev->mutex = &mutex;
	pr_dbg2("Version: %s\n", OPENVFD_DRIVER_VERSION);
	if (!verify_module_params(pdata->dev)) {
		int i;
		__u8 j;
		pr_error("Failed to verify VFD configuration file, attempt using device tree as fallback.\n");
		get_pin_from_dt(MOD_NAME_CLK, pdev, &pdata->dev->clk_pin);
		get_pin_from_dt(MOD_NAME_DAT, pdev, &pdata->dev->dat_pin);
		get_pin_from_dt(MOD_NAME_STB, pdev, &pdata->dev->stb_pin);
		get_pin_from_dt(MOD_NAME_GPIO0, pdev, &pdata->dev->gpio0_pin);
		get_pin_from_dt(MOD_NAME_GPIO1, pdev, &pdata->dev->gpio1_pin);
		get_pin_from_dt(MOD_NAME_GPIO2, pdev, &pdata->dev->gpio2_pin);
		get_pin_from_dt(MOD_NAME_GPIO3, pdev, &pdata->dev->gpio3_pin);

		chars_prop = of_find_property(pdev->dev.of_node, MOD_NAME_CHARS, NULL);
		if (!chars_prop || !chars_prop->value) {

github.com

arthur-liberman/linux_openvfd/blob/master/driver/openvfd_drv.h#L57


#define VFD_IOC_GVER			_IOR(VFD_IOC_MAGIC,  6, int)
#define VFD_IOC_STATUS_LED		_IOW(VFD_IOC_MAGIC,  7, int)
#define VFD_IOC_GDISPLAY_TYPE		_IOR(VFD_IOC_MAGIC,  8, int)
#define VFD_IOC_SDISPLAY_TYPE		_IOW(VFD_IOC_MAGIC,  9, int)
#define VFD_IOC_SCHARS_ORDER		_IOW(VFD_IOC_MAGIC, 10, u_int8[7])
#define VFD_IOC_USE_DTB_CONFIG		_IOW(VFD_IOC_MAGIC, 11, int)
#define VFD_IOC_MAXNR			12

#ifdef MODULE

#define MOD_NAME_CLK       "openvfd_gpio_clk"
#define MOD_NAME_DAT       "openvfd_gpio_dat"
#define MOD_NAME_STB       "openvfd_gpio_stb"
#define MOD_NAME_GPIO0     "openvfd_gpio0"
#define MOD_NAME_GPIO1     "openvfd_gpio1"
#define MOD_NAME_GPIO2     "openvfd_gpio2"
#define MOD_NAME_GPIO3     "openvfd_gpio3"
#define MOD_NAME_PROT      "openvfd_gpio_protocol"
#define MOD_NAME_CHARS     "openvfd_chars"
#define MOD_NAME_DOTS      "openvfd_dot_bits"
#define MOD_NAME_TYPE      "openvfd_display_type"

Betatester · 14 July 2020 04:05

Following vfd works with Tanix TX5 Deluxe Edition. Remember to save as RAW ( or copy paste in vi using ssh terminal ).

Tanix_TX5_Deluxe_Edition.vfd.conf (1.3 KB)

notFound · 14 July 2020 15:32

I’ve a Tanix TX5 Plus Deluxe Edition (4 / 64 / S905X3 / 1G) but your vfd.conf doesn’t work on my device, I don’t know why , but this vfd.conf works perfectly:

TaNix_TX5_PLUS_Deluxe_Edition.vfd.conf

I bought it from Amazon EU.

Betatester · 14 July 2020 23:57

@notFound Do you happen to know your board number? Mine’s U211.

notFound · 15 July 2020 13:49

@Betatester, build.prop:

ro.product.name=u211
ro.product.device=u211

Betatester · 16 July 2020 02:07

@notFound Thanks. Interestingly enough, both configurations work on my box.

cbsousa2004 · 30 July 2020 11:04

I need help with the display of a tx3 mini with FD655 regulator.

kostaman · 30 July 2020 11:19

You have carried out instructions from OP ???

You have installed the VFD addon from the CoreELEC Repository ??