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Type: Posts; User: Frank B

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    Somehow I missed this post ! That's amazing !! I...

    Somehow I missed this post !
    That's amazing !! I want to try that as soon as possible (--hm.. but will take a week or more :-( )
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    These messages are perfectly OK and normal. Try...

    These messages are perfectly OK and normal.
    Try to connect VGA-PIN 9 to 5 Volt - Some Displays (eg my TV) seem to want this.
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    Thank you - i've updated my code:...

    Thank you - i've updated my code: https://github.com/FrankBoesing/Teensy64/commit/b8827f9fc3b7ad61234e7a408db1b273c6ee4e7c

    These triggers are very useful - On the C64 the "Rasterline-interrupt"...
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    Thank you, that works. I use the DAC DMA as...

    Thank you, that works. I use the DAC DMA as trigger.
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    I'm still a little concerned about the keyboard...

    I'm still a little concerned about the keyboard lag that occurs with my "usb dis/enable" technique... at the moment, I tend to leave it enabled and accept the minor flicker..
    Maybe we should...
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    Ok.. I have audio solved - is (with default...

    Ok..

    I have audio solved - is (with default setting) FTM channel 7 as trigger correct ? It sounds ok, at least..
    It was a very simple change - only three lines:

    In output_dac.cpp:


    ...
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    Wow..that's fast :) I'm still working on Audio.....

    Wow..that's fast :)
    I'm still working on Audio.. the line-frequency is modeline.pixel_clock / modeline.vtotal = 37878.7878 Hz (452x600x60Hz), is this correct ?
    37878.7878 seems to be ok, but is...
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    I need a bit more testing before, but I think...

    I need a bit more testing before, but I think that would be great.
    I'd need
    a) write to DAC every 2. rasterline on the right border
    b) read all GPIO_PDIR on every rasterline, right border (Port A...
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    Hi qix, I have a solution for my usb-host...

    Hi qix,
    I have a solution for my usb-host problem, I think.
    I add two more channels to the FTM with modified timing. They have interrupts enabled and let me en/disable the usb-host thing and read...
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    Do you have capacitors (for buffering) on your...

    Do you have capacitors (for buffering) on your board ?
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    Sry, EMail

    Sry, EMail
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    Currently, Vin (like on the boards i sent you -...

    Currently, Vin (like on the boards i sent you - there is a jumper on the backside to connect Pin 9 with Vin - have you got my mail ? ). I'll change that to VUSB for the next revision, and remove the...
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    I have my Sony "Bravia" TV working. As I...

    I have my Sony "Bravia" TV working. As I suspected some posts earlier: On PIN 9 of the VGA socket 5 volts are necessary. It detects 800 x 600 60Hz Mode.
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    Thanks, I'l send it Saturday. It's a little...

    Thanks, I'l send it Saturday. It's a little "Thank you" :-)
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    Hi qix, please write me a mail with your...

    Hi qix,

    please write me a mail with your address...
    I want to send you a VGA(with a few extras) Board.

    11729
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    2fps is not that bad if every pixel is ray-casted...

    2fps is not that bad if every pixel is ray-casted with floats.
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    ok, thanks. I've tried 120MHz only. I'm still...

    ok, thanks. I've tried 120MHz only.
    I'm still wondering why my TV does not display anything, in any mode... or, maybe the VGA input is not working. Don't want to move my PC to the TV...
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    Can someone try these 50Hz settings please ?...

    Can someone try these 50Hz settings please ?
    It's PAL- Timing

    They work on my displays (but - still - not with my TV)



    // ++++++++++++++++++++++++++++++++++++++++++++++++++++++
    #ifdef...
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    No, pin interrups work in any mode (not...

    No, pin interrups work in any mode (not "disabled") as far as i know.
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    Callback: An other option is to just use the PIN...

    Callback: An other option is to just use the PIN for an Interrupt:

    attachInterrupt(digitalPinToInterrupt(29), myint , RISING); - FALLING is a bit later - I don't know the exact VGA timing (qix??),...
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    I wonder if a video with 256 colors looks...

    I wonder if a video with 256 colors looks good.... unfortunately, SDHC is on AIPS-1, too-
    Edit: All fast devices are on AIPS-1.. :-(
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    that top-border flicker in lines.ino is...

    that top-border flicker in lines.ino is interesting... where does it come from ?
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    USB-HOST: This helps: USBHS_USBCMD &= ~ (...

    USB-HOST:
    This helps: USBHS_USBCMD &= ~ ( USBHS_USBCMD_ASE);
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    I think I know a bit more, now. For Teensy...

    I think I know a bit more, now.

    For Teensy 3.6:
    GPIO and Serial5 are connected to the same "Periphal Bridge 1" . If both are accessed the same time, the visible pixel-delay occurs - because the...
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    Hm, I've confused that with "sharpness". But I...

    Hm, I've confused that with "sharpness". But I think now this looks different.
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    Hi, yes, i have to activate "auto adjust",...

    Hi,

    yes, i have to activate "auto adjust", too. The right border was out of the screen without that.
    And, I see this darker bars, too. Is it posssible, that it comes from the display ? What...
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    Defragster, I tried your testsktech - very nice...

    Defragster, I tried your testsktech - very nice !!

    QIX: Serial5 - what causes the problems ? RX or TX ? Could you post your testsketch (or mail it to me) - I want to investigate the exact problem....
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    Hm. That does not even use DMA ?? Its getting...

    Hm. That does not even use DMA ?? Its getting more and more mysterious.
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    HOST: I still wonder WHAt exactly is the cause...

    HOST: I still wonder WHAt exactly is the cause for the pixel-displacement/flicker. It is about 3 pixel wides which is really a LONG time. But it seems to me, that the beginning of the lines is...
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    usb audio gives nice wandering waves... ;-) -...

    usb audio gives nice wandering waves... ;-)
    - but only when transfering audio - not like serial where it is sufficiant to enable the monitor...(?!)
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    F_BUS 120MHz is needed because of the SPI...

    F_BUS 120MHz is needed because of the SPI Display. I think for VGA, 60MHz will work.
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    I still hope that we can use the USB-HOST someday...

    I still hope that we can use the USB-HOST someday :)
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    Great. I'll try it tomorrow.

    Great. I'll try it tomorrow.
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    Oh, I've not noticed that there is difference...

    Oh, I've not noticed that there is difference depending on the colors. Good catch.
    The displacement is *much* more with USB-HOST. Several pixels.
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    No. noise can not move the pixels or slow down...

    No. noise can not move the pixels or slow down DMA. The pixels move to the right border. Just make a static picture with long vertical stripes, and you'll see what it looks like. With USB-HOST even...
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    There is a missing line (UVGA_240M_452X300) : ...

    There is a missing line (UVGA_240M_452X300) :
    11587
    As you see on the photo, the top line of "RUN" is missing
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    Hi Paul, unfortunately, that's the case already...

    Hi Paul,
    unfortunately, that's the case already and does not help.
    https://github.com/qix67/uVGA/blob/master/uVGA.cpp#L986
    But please read the comment:


    // let's also give the highest...
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    Sound: Works good, no problem so far! USB-HOST :...

    Sound: Works good, no problem so far!
    USB-HOST : Causes flickering. I'm searching for an other solution to connect a keyboard..
    Print: Hm, it printed for me without crash.
    DMA slower: Yes, i had...
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    Yes. Flickering. :-( Can you post the schematics...

    Yes. Flickering. :-(
    Can you post the schematics for the additional hardware ? I want to make/order testboards..
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    https://github.com/qix67/uVGA/pull/4/commits/c6290...

    https://github.com/qix67/uVGA/pull/4/commits/c62906b8c8d67aa06f4bcb6d09ca5222455b173d

    And yes, only the fist 15 channels are used. So, no problem.
    But a problem is the malloc.. esp the first, for...
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    Ops.. I forgot to copy one line.. :-) I'll add it...

    Ops.. I forgot to copy one line.. :-) I'll add it this evening, when Im back.
    From my memory, the DMA lib does not allocate DMA Cahnnels >15. We should check this.
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    Pullrequest: https://github.com/qix67/uVGA/pull/4

    Pullrequest: https://github.com/qix67/uVGA/pull/4
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    Sound: Ok, following problem: uVGA uses channels...

    Sound: Ok, following problem: uVGA uses channels 0,1,2 by default, but the DMA library does not know this, and allocates 0 for Audio.

    I think, I can fix this and make a pull-request for qix.
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    At the moment, it's not compatible with the...

    At the moment, it's not compatible with the Audio-library - at least DAC Output (no sound). I'm trying to find the problem..
    And I have to test the USB HOST. ;) But don't have test-hardware with...
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    Same on my Sony "Bravia" TV with VGA Input: The...

    Same on my Sony "Bravia" TV with VGA Input: The VGA-"Icon" lights up, but If if try to select it, it says the PC is not switched on.
    A timing issue ? Or is it possible that it wants 5V on Pin 9 ?...
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    Nope. The reason is simple: I don't clear the...

    Nope. The reason is simple: I don't clear the screen. The entire screen gets rewritten anyway, every time, so there's no need to clear it.
    One little issue, that I'd like to mention is, that this...
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    A Video: ...

    A Video:

    https://www.youtube.com/watch?v=HBXMC1VhF2o&feature=youtu.be

    The blue borders are test. I'm working on sound...
    The pixel-flickering went away when I switched back to "auto" setting....
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    Nope, everything ok, it was my code that caused...

    Nope, everything ok, it was my code that caused the problems :) All good (and bug fixed) :)

    I've attached the hex-file if you want to take a look.
    (If you want to try a bit, you can use the...
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    I had to change only one thing: - My "hack" with...

    I had to change only one thing:
    - My "hack" with the arrays above (and it requires a modeline "240Mhz 452x300" + I've modified .horizontal_position_shift = 14+23+12)

    Can you add a "begin" that...
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    solved... I see "**** COMMODORE 64 BASIC V2 ****...

    solved... I see "**** COMMODORE 64 BASIC V2 **** 64K RAM SYSTEM 38911 BASIC BYTES FREE" and a blinking cursor ;)
    Good quality!!
    Tomorrow, I'll try to make a photo and post it.

    I'm still unsure...
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