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"Cannot find device on Com Port"

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  • michael_4D
    replied
    Hello Johannes,

    What you have is a uLCD-144-G1, an older generation of display that we used to make.

    You might want to consult this page for additional information on that module:

    µLCD-144-G1(SGC)
    http://old.4dsystems.com.au/prod.php?id=256

    Current versions of that display do not use GFX/SGC, we now only use Goldelox PmmC.

    I dont`t have a 4D cable, but I can`t imagine that would solve the problem. I use a FTDI to serial, invert the Dtr, using a transistor for an active hi Rest.
    We do not recommend using other programming device to program our modules. This could dmage the module which will then void the warranty.

    If you want to take that route, you may consult this forum thread:

    Emulating the Programming Cable
    https://forum.4dsystems.com.au/node/3321

    Do I need to make there any settings at all, to switch modes? From SGC to GFX?
    Since this is an older generation of display, I haven't played around with this, however, I think you might need to change the PmmC of the module from SGC to GFX.

    For information on changing the PmmC, please consult this application Note.

    General How to Update the PmmC for Goldelox
    https://www.4dsystems.com.au/appnote/4D-AN-00041/

    As previously mentioned, we're currently using the Goldelox PmmC, put simply, this PmmC has the SGC and GFX functionalities combined.

    To Migrate to the Goldelox PmmC, you may consult this Application Note.

    General Migrating from GOLDELOX-SGC-GFX to GOLDELOX
    https://www.4dsystems.com.au/appnote/4D-AN-00040/

    I hope this helps.

    Best regards,

    Leave a comment:


  • Johannes
    started a topic "Cannot find device on Com Port"

    "Cannot find device on Com Port"

    Some time ago I had bought a µLcd-144 G2 (I guess it is a G2, it has a single row 9 pin header), it seems to be in an SGC mode, since the display reads the following upon power up :
    4D Systems
    uLCD-144
    uSD
    4D Systems© 2010

    and I am able to program primitives and text via a Arduino Pro mini AT328,

    What ever I try to switch to GFX mode, no success. The Com Port connection is the problem. Even though I am able to address the LCD through a Pro Mini At328 throgh the same port.

    I dont`t have a 4D cable, but I can`t imagine that would solve the problem. I use a FTDI to serial, invert the Dtr, using a transistor for an active hi Rest.

    I still don`t understand the entire concept of the Workshop- what for is the /File/ Options/ Arduino setting? Do I need to make there any settings at all, to switch modes? From SGC to GFX?

    Isn`t the 4D cable just a FTDI to serial, with the Dtr line inverted over a npn transstor?

    Any suggestions?
    Appreciate any help!


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