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No more HDMI? — Parallax Forums

No more HDMI?

SuracSurac Posts: 176
in Propeller 2

I understand the title is a bit confusing, but after some time earning money i came back to see what happend to the P2.

I downloaded all the official P2 Docs and had a look to the Obex and was wondering what happend to HDMI Output. Or HDMI documentation on P2.

  • No Object that handles HDMI Video
  • Only mentioning HDMI with one line in the official documents.
  • The way to make HDMI work was to dig out some old examples form the V35 Google doc Chip wrote, and some old crude code i found on my disk. (That was found somewhere in the forum)

is HDMI a kind of "bad uncle" or was it just forgotten? (Or was i not searching properly?)

Thanks for your Time :)

ps. please forgive my bad English. I am no nativ speaker

Comments

  • VonSzarvasVonSzarvas Posts: 3,450
    edited 2022-11-02 13:20

    Hi @Surac !

    HDMI is a proprietary standard, so it might not be called out in documents.

    However, all is well !

    You will find resources for "Digital Video Out", and there's at least a couple drivers that will drive HDMI style monitors:

    https://www.parallax.com/video-hardware-character-map/
    https://forums.parallax.com/search?Search=hdmi

  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514

    When I read the title, No more HDMI?, I thought perhaps @Surac had read the same article I did about the EU requiring USB-C to be the single standard for all peripherals, including video. IOW, HDMI might soon be going the way of the dodo.

    -Phil

  • AJLAJL Posts: 517

    @"Phil Pilgrim (PhiPi)" said:
    When I read the title, No more HDMI?, I thought perhaps @Surac had read the same article I did about the EU requiring USB-C to be the single standard for all peripherals, including video. IOW, HDMI might soon be going the way of the dodo.

    -Phil

    Just like VGA and serial have?

  • SuracSurac Posts: 176

    @VonSzarvas
    Thank you, i was a little bit worried but you gave me some useful links

    @"Phil Pilgrim (PhiPi)"
    Hell no. I earn my money building FPGA with different video inputs like DVI, HDMO, DP and SDI. i would be glad to only support one video input, but
    my customers come to me with things i never heard of. Most of my customers are still in DVI Land, slowly adopting HDMI.

    Thanks for your Time

  • ke4pjwke4pjw Posts: 1,155

    @Surac look for the object titled P2VideoDrv.spin2. It can be used with the digital video board that has an HDMI connector. I drive the small HDMI screen that Parallax sells with it.

  • ke4pjwke4pjw Posts: 1,155

    @Surac PS: It is listed as DVI in the code as I recall.

  • pik33pik33 Posts: 2,366
    edited 2022-11-02 17:31

    Technically what a P2 outputs is a DVI type signal which is a subset of HDMI. As HDMI is a standard, you have to (1) conform to it and then (2) buy a license to officially use this name and logo

    P2 doesn't match (1) so (2) is not possible (and it costs...) so there is no real HDMI output in a P2

    However the output of P2 is good enough for HDMI "receivers" (monitors, TVs) to display the picture and there is an accessory board with a HDMI socket.

    The way to make HDMI work was to dig out some old examples form the V35 Google doc Chip wrote, and some old crude code i found on my disk. (That was found somewhere in the forum)

    There is my "HDMI" driver family topic: https://forums.parallax.com/discussion/173228/a-display-list-is-fun-0-50a-beta-0-07g-psram-command-list-used/p1

  • RaymanRayman Posts: 14,640

    My code for WVGA DVI output is here:
    https://forums.parallax.com/discussion/172518/wvga-hdmi-vga-8bpp-graphics-driver-works-with-the-parallax-7-hdmi-lcd-in-spin2

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