Recalbox sur TV CRT en RGB

[Scandy]

@aTg said in Recalbox sur TV CRT en RGB:

@Scandy That already exists, the rpi2scart ... (A bit expensive the truth)
He thinks that I am alone, I can not launch so many projects at the same time.
I had an idea about this that you are telling me, so that it was not the same as everything I had thought of including in the design a box for the RPi in the form of a console, its connector scart on the back and the DB15 in front, with button of power and reset.
But it's just an idea.

@gkralicek2 If there are, I already have a prototype working.

A board with the same form-factor of RPi, placed on top of it (like a "shield") with female SCART and DB15 controllers... hmmmmmm!

[gkralicek2]

@aTg Now that's impressive ! Good job mate !

[Scandy]

Ok guys, I need your help.

RPi3 > HDMI to VGA > OK! (on a LCD monitor)

but

RPi3 > HDMI to VGA > VGA to SCART (from Retrocable.es)

...I get only a black picture.

My crt TV seems to recognize that there is some kind of signal, but I only get a black picture. What I'm doing wrong? :_(

Thanks.

[aTg]

@Scandy For the tv to be set to RGB mode you need 3v on pin 16 of the scart.

[Substring]

@Scandy said in Recalbox sur TV CRT en RGB:

So, forced to only one choice, you'd rather use the GPIO for video or controls?
IMHO the delay generated by an HDMI>VGA converter is more sensitive than that induced by USB hardware.
I do not take into account the delay caused by the emulator/SDL because it would be present in both cases.

D**n, i had hoped I2C pins would still be available in DPI mode, or that DPI can be used for DPI. Looks like not. Too bad

One test that could be done is use a HDMI multiple output, and compare HDMI vs HDMI2VGA at the same time.

Anywya, enugh of trolling stuff

[Substring]

@Scandy said in Recalbox sur TV CRT en RGB:

Ok guys, I need your help.

RPi3 > HDMI to VGA > OK! (on a LCD monitor)

but

RPi3 > HDMI to VGA > VGA to SCART (from Retrocable.es)

...I get only a black picture.

My crt TV seems to recognize that there is some kind of signal, but I only get a black picture. What I'm doing wrong? :_(

Thanks.

@archimage or @ian57 any clue ?

[gkralicek2]

@Scandy Have you plugged the USB connector from the "retrocable.es" cable into one of the Pi USB port or a USB power supply ? You need that +5v line to be connected so the TV can switch to RGB mode properly otherwise it will expect a composite signal by default and display a blank screen.
If you've done that already and still have a black picture then have you modified the config.txt and recalbox.conf files in order to output a video mode compatible with the TV @15khz (such as CEA mode 6 -> 480i or CEA mode 8 ->240p) ?

You could use :
hdmi_group=1
hdmi_mode=6

in your ./boot/config.txt file so that emulation station is displayed in 480i (640*480 interlaced mode)

and :
global.videomode=CEA 8 HDMI

in your ./recalbox/share/system/recalbox.conf file so that your emulators run at 240p (720x240 progressive). Note that you will have to adjust the aspect ratio in retroarch and activate the "smoothing" option in recalbox menus to get a proper 4/3 display in your games out from the 720x240 res.

[Scandy]

@gkralicek2 thank you very much for your feedback.
Yes, the USB was connected, but in config.txt I only set hdmi_safe=1.

I'll check with

hdmi_group=1
hdmi_mode=6

Thanks!

[ian57]

@Substring as gkralicek2, I was thinking of the +5V which force the tv to switch to the right mode.

[gkralicek2]

@Scandy Then that's for sure the source of your problem :=)... If you haven't configured the config.txt file with a proper output video mode compatible with what your CRT TV can display, all you'll get is a black screen. Default boot up res is 640*480 progressive @31khz which is compatible with a PC LCD screen but NOT with a TV set which is limited to resolutions using a 15khz horizontal frequency (240p, 480i or 576i).
Once you'll have applied the settings i gave you in my previous post, you should get a picture :=)

[Scandy]

@gkralicek2 @ian57 @Substring thank you for your help!
Adding a male - female VGA cable between the HDMI > VGA adapter and Retrocable VGA > SCART fixed it (of course I've also setup config.txt).
Now I have a perfectly clear RGB picture on my good old crt TV.

Unfortunately, it seems that real time resolution switch does not work in AdvanceMAME using the HDMI > VGA adapter (I only get a black screen... l'll write to Andrea).

So I still wait for the GPIO - VGA from Malaysia...

P.S. If someone's interested, I found how to use Unibios in AdvanceMAME.

[Substring]

@Scandy check my issue at Andrea : you're supposed to configure your monitor in advcfg first

[Scandy]

@Substring thank you very much for your advice (and for your constant support) I've yet manually configured my monitor (crt TV) in advmame.rc but it seems an issue related to HDMI > VGA adapter I'm using (I can't even run videomodes in advcfg). I'll check with the GPIO-VGA when I'll receive it.

I'm testing the 3.1 RC and it's great: Andrea fixed many little things, and audio and vsync are now perfect, as the UI.

BTW I've checked both the HDMI > VGA > SCART output and the Composite output and let me say that... to me, lag brought by my Lindy HDMI > VGA is consistent.

Ryuuko no Ken (Art of Fighting) in Composite is much more reactive, I hardly feel the difference with the real CMVS. Can't wait to test the VGA shield on the same aspect.

On the other hand, seeing AdvanceMAME in pure RGB at 240p@60hz (fixed, for now) is impressive.

I smile thinking about how emulation on RPi was different just some time ago. Who knows what the future holds!

[Substring]

@Scandy OK, i'm now equipped for pi 2 scart through GPIO. Advmame 3.1-rc sound is fuzzy sometimes (like when a vinyl was turning too fast), i didn't get this behaviour on normal HDMI. Dunno how to check the resolution change, but i'm not sure it happens.

[n3o_c59]

Salut les gars, j'ai un petit soucis après avoir suivi le poste, mon écran n'est pas complet comme sur les photos..J'ai créé un fichier cfg pour chaque console mais je n'arrive pas à aller plus loin avec le viewport. Un peu comme s'il manquait une partie de mon écran.
Une idée ?

C'est comme ça pour toutes les consoles mais pas pour émulationstation.

Merci !

[Substring]

@n3o_c59 question bete : si tu utilises raspi2png tu vois bien ce qu'il manque ou non ? Sinon diminuer la taille de la zone visible

[Scandy]

@Substring I had this issue also on AdvanceMAME 3.0 with HDMI and Composite, and Andrea fixed it. I suppose he is aware of this strange behavior, and probably he will fix it after the holidays.

Meantime, try to set in advmame.rc the value sync_resample emulation, it worked for me as workaround.

P.S. Speaking of resolution on RPi, we should follow (and also support) this interesting request.

[haricot]

Bonjour à tous et déja un grand merci pour les informations fournis pour ces foutus mode vidéo.

Je me suis lancé dans la destruction/reconversion d'une SNES ( carte mere PPU-1 HS ).
J'avais un pi qui trainais dans un placard et je me suis dis qu'il serait intelligent qu'il rende hommage à ces ancêtres.
... Sort ton fer à souder , attaque le GPIO , découpe la carte mere pour faire rentrer le PI ( oui l'idée au départ c'est de faire plus vrai que vrai: tout garder , manettes - peritel et meme l'adaptateur 9V).

Après quelques recherches , je solve les controleurs et m'attaque à la vidéo.

Et la les choses se compliquent...
Je commande un HDMI/VGA , vérifie qu'il fonctionne sur mon moniteur, vérifie qu'il fonctionne en 240p ( via le mode 8 ) sur la télé.
je met un mode custom ... et la plus rien .... le Pi ne passe plus le boot oO...
je sors la carte SD , modifie le config.txt avec la sauvegarde 240p et ca remarche nikel sur la télé ( enfin nikel si on aime les bordures de 6 cm de tous les cotés )
remet un autre HDMI_configs donné sur le topic ... et pareil .. plus de boot ...

voici le passage du config qui ne passe pas du tout :

hdmi_cvt=1920 240 60 1 1 0 0
ou meme
hdmi_timings=320 1 20 29 35 224 1 10 14 16 0 0 0 60 0 6400000 1 # 320:224 Sega Genesis (NTSC)

bloque le pi..
Si quelqu'un a une idée , je suis preneur.
Bien le merci,
Stéphane.

[archimage]

@haricot voici un extrait de mon tuto express :

dans config.txt vérifie que tu as bien ces lignes

hdmi_cvt=1920 240 60 1 1 0 0
hdmi_disable_edid=0xa5000080
hdmi_pixel_encoding=2
avoid_safe_mode=1
disable_overscan=0
hdmi_drive=2
hdmi_group=1
hdmi_mode=6
hdmi_force=1

le mode 6 doit être activé pour emulationstation, non le mode 8 ensuite il faut que le mode 87 soit défini dans la résolution de Retroarch comme écrit plus haut...

[Scandy]

@haricot @archimage I have the same issue with my Lindy HDMI > VGA Adapter.
No problems with a "standard" 240p@60hz resolution but I can't set any custom video mode in config.txt.
For the same reason I don't get native games resolution in AdvMAME.
I'll check these settings too... thanks!