SED1335 320x240 graphic LCD


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  1. #1
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    do a test... you'll see why sometime a spare MAX232 transmitter can be usefull. Place your voltmeter on a transmitter output.... set the transmitter input to GND, then to 5Volt. What do you get on your Voltmeter?
    Steve

    It's not a bug, it's a random feature.
    There's no problem, only learning opportunities.

  2. #2
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    Sorry Steve, no time for a test, especially when I don't know what you want me to test. The few hours I have are spent trying to finish this never-ending project.

    Robert
    My Creality Ender 3 S1 Plus is a giant paperweight that can't even be used as a boat anchor, cause I'd be fined for polluting our waterways with electronic devices.

    Not as dumb as yesterday, but stupider than tomorrow!

  3. #3
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    Default Correction To Code

    SendData:
    pinA0 = 0
    pinData = varByte
    pinWR = 0
    @ nop ' <--- ADD
    pinWR = 1
    return

    SendCommand:
    pinA0 = 1
    pinData = varCommand
    pinWR = 0
    @ nop ' <--- ADD
    pinWR = 1
    return


    The [@ NOP] turns out to be very important for high-speed display, it corrects a timing issue. Without it, there is a sort of 'echo' on the LCD when you display characters extremely fast (my initial tests were keyboard-type speeds).

    Robert
    My Creality Ender 3 S1 Plus is a giant paperweight that can't even be used as a boat anchor, cause I'd be fined for polluting our waterways with electronic devices.

    Not as dumb as yesterday, but stupider than tomorrow!

  4. #4
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    Is it still the game project we already talked about about a year ago but just grow with the age
    Steve

    It's not a bug, it's a random feature.
    There's no problem, only learning opportunities.

  5. #5
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    Yup, same project, but getting more complex as I learn more. Now I'm using a PIC 18F4550 at 48MHz with a high-speed USB link to a PC. I no longer process the game text on the PIC, the mcu is now used exclusively for I/O to and from the LCD and buttons, nothing more. VB6 will manage a database PC-side.

    Robert
    My Creality Ender 3 S1 Plus is a giant paperweight that can't even be used as a boat anchor, cause I'd be fined for polluting our waterways with electronic devices.

    Not as dumb as yesterday, but stupider than tomorrow!

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