Using Nokia LCD


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  1. #1
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    Default Re: Using Nokia LCD

    How to connect display...
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  2. #2
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    Default Re: Using Nokia LCD

    I thought I would order that one but the other Canadian distributor I found don't have any in stock and couldn't tell me when he'll receive some more... too bad.

    I found a place near who'll have the following in stock next week, I'll pick it directly at their shop.
    http://www.inexglobal.com/downloads/glcd5110.pdf
    Steve

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

  3. #3
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    Default Re: Using Nokia LCD

    Steve,

    is the same. i like it more in blue.

    The pinout are the same.

  4. #4
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    Default Re: Using Nokia LCD

    on the one i have as you see there is no Vop pin. This pin as from the code i see that is connected to ground through a 4.7uf capacitor and controls the Contrast.

    The point is that on the LCd i have there is no Vop pin. So how can i control the Contrast.

    If anyone have the display 5110 nokia from sparkfun, could make it easier if he can upload the schematic and a simple code.

  5. #5
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    Default Re: Using Nokia LCD

    Vop is a register in extended instruction set (see page 14, Set Vop)
    http://www.nxp.com/acrobat_download2.../PCD8544_1.pdf

    "8.9 Set VOP value" (on page 16) describes how to calculate setting value.

    Contrast is set in "Lcd_Init" section in LCD_3310 -file.
    Code:
    Lcd_Data= $c8: GOSUB Lcd_SendByte       ' SET LCD Vop (CONTRAST)
    Here it seems to be $c8, with some older I have to use $d1 and other newer might need $bf. Try to change the value and check which is best with your display.

    BR,
    -Gusse-

  6. #6
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    Default Re: Using Nokia LCD

    i have fixed the circuit from that page and work fine.

    http://www.radiolocman.com/shem/sche....html?di=44132

    he is using the following

    LcdReg = %00100001 'LCD Extended Commands.
    call PrintCtrlLcd
    LcdReg = %10101001 'Set LCD Vop (Contrast).
    call PrintCtrlLcd
    LcdReg = %00000110 'Set Temp coefficent.
    call PrintCtrlLcd
    LcdReg = %00010011 'LCD bias mode 1:48.
    call PrintCtrlLcd
    LcdReg = %00100000 'LCD Standard Commands, Horizontal addressing mode.
    call PrintCtrlLcd

    that means that the HEX of the Vop is $A9.

    He is also says:

    If by any chance the contrast isn't to your liking, it can be changed during the programming of Pic12F629, in the program location D2h. the current value A9h is the one I use with my LCD and don't know it will be for other LCDs. The value can be set to anything between 80 h and FFh, 80 h being minimum contrast and FFh maximum.

  7. #7
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    Default Re: Using Nokia LCD

    OK, I've finished the new Include/driver/wrapper thing here. I'll post it in the next days. Still have some improvement to do. No big changes, but probably easier to use, a tad more flexible too.

    You guys should love it

    Stay tunned!
    Steve

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

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