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grLib demo examples

Jackson Keating
Intellectual 640 points


I'm looking for good visual examples of what grLib looks like on an LCD screen.  Does anyone know of any images or youtube video I could look at?

Thanks,
Jackson

  • 0
    Guru 86765 points

    Hi Jackson,

         Try a search at google first. Here is one below.

         https://www.youtube.com/watch?v=LEWk8Z2h1j4

    -kel

  • 0 in reply to Markel Robregado
    Intellectual 640 points

    I've seen that video.  It's not a very good overview of what the features look like.  It mostly spends a lot of time reviewing the code and how to use the library.  At the end of the project he's just pressing a button on the screen to turn an LED on and off.  I was looking for a fuller implementation.  Maybe even an example of an available product that uses the library.

  • 0 in reply to Jackson Keating
    Guru 86765 points

    Jackson Keating said:
    It's not a very good overview of what the features look like

    The video was just intended to demo. Most probably, you will find complete projects that uses grlib in the internet. 

    -kel

  • 0 in reply to Jackson Keating
    Guru 117855 points

    Believe you've posted both a fairly deep & interesting question.  And one not likely to be quickly/easily answered.  (i.e. response you've received)

    Here's my take: (& I've some background/success in the display field)

    a) Be constantly on the alert for screen designs which you find interesting/compelling - capture, store & categorize

    b) Examine how you'd synthesize these.  Does the graphic library here (or elsewhere) provide the primitives which - in combination - enable you to create your desired features?  (you'll have to spend some time, mental effort to form a meaningful analysis)

    c) Are the MCU and library "capable" of meeting your graphic performance demands?  What are those demands?

    d) You're silent as regards, "video!"  Shouldn't your project/product "almost" equal that of a teen's cell-phone?  Can it?

    You may wish to examine the MCU's w/in cell-phones and tablets - and the vast memory & other peripherals which are thus required.  Surely you don't require "all" - but how much "is" required?

    Unstated is the value of imagery to your project/product.  I built a house -  blocks from the Pacific - developing/selling glorious, monochrome 2x16 Lcd modules.  (that was in mid '80's)  The MCUs here (unavailable then) would have been "over-kill" for our past use - but appear, "over-challenged" by your (likely) use today. 

    Whether fair or not - user/client experiences mean that you'll compete in the cell/tablet space - and MCUs used there are simply: smarter, faster, better!   And no library "overview" can or will solve that...

  • 0 in reply to cb1_mobile
    Intellectual 640 points

    Thanks for the responses.  I still find it strange that TI designed an entire graphics library and have not posted more than one example of what it looks like.  Either way, I went ahead and ordered the Kentec LCD booster pack to see for myself.  I'm sure I'll be able to make something work.  And thanks for the concern, but any kind of primitive library should be good for my purposes.  I'd prefer something that looks pretty, but it won't make or break the design for my purposes.

  • 0 in reply to Jackson Keating
    Guru 117855 points

    Thank you as well - usually marketing can be counted upon to do, "Everything under the sun to drive Sales..." 

    This MCU's founding firm - LMI - introduced both a mono graphic (similar to the one you've just chosen) & bit later a 3.5" TFT - both revealed rather clever screen designs.  (i.e. nice combination {I thought} of images, graphs and numeric data)  The 3.5" design was distinctive (again, says me) you may have to dig a bit to find it - but believe you'll benefit from that effort.  The mono design was for a 3 headed, Stepper Motor RDK - and employed not one, but two, MCUs.  Iirc - that was released prior to the official graphic library.

    By the nature of your initial question - believe that your pursuit of, "Purposeful Screen Layout/Design" - which does not strictly rely upon the "crutch/splash of color" (to compensate for rushed screen development) - will indeed serve you well.

    Note too that 2.4", QVGA, TFTs may today be purchased for less than most QVGA, mono Lcds.  (J.K.:  "Now he tells me!")  And the TFT likely has superior contrast & viewing angle - 2 key, "figures of merit" for displays.  Demand and review the display specs - auction sites & other mass markets may not offer best quality to the "unaware."  (and that's not you!)  Bon chance, mon ami...

    Have to sell something now - but if you desire - I'll later post several screen designs which - along w/6, 12 hour days/week - for 3 years - helped take my past display firm from start-up to public...

  • 0 in reply to cb1_mobile
    Intellectual 640 points

    That would be great to see a few examples.  You used the same grLib?  I'll have to dig around for some LMI examples soon.  I linked the booster pack below.  I am getting a TFT.  It should be coming tomorrow at the end if business.  It has resistive 4 wire touch too.  In my head, it will be a industrial type of menu based design.  Similar to what you might see on a PLC touchscreen interface. 

  • 0 in reply to cb1_mobile
    Intellectual 640 points

    This is the booster pack I purchased.

    http://www.newark.com/kentec-electronics/eb-lm4f120-l35/exp-board-lcd-boosterpack-stellaris/dp/48W2063