B4R Question Nextion Display, first steps, first issues

Discussion in 'B4R Questions' started by Cableguy, Nov 9, 2016.

  1. Cableguy

    Cableguy Expert Licensed User

    Hi guys,

    So I finally got my 2.8" Nextion Display, hooked it up to 5V and ran the DEMO, All works GREAT!

    So I decided to use B4R and softwareSerial to log all the things coming out of the demo so I can start to get a grip on things...

    A very simple code, declaring the softserial, initializing it and set the newData event to log things out...

    Should compile without issues, right?
    WRONG!!!

    I'm getting a weird error complaining of a missing/unaccessible file or folder...

    Which is true, because my path is only correct up to the Objects Folder... so I don't understand!
    Where did the rest of that path came from?
     
  2. Cableguy

    Cableguy Expert Licensed User

    I figured I do a quick search on that "gatFileAttributesEx" and found out that this happens with paths containing spaces...

    Still, in April, Erel gave this answer :


    Hum, it got me wondering of which update he was refering to (?)
     
  3. Erel

    Erel Administrator Staff Member Licensed User

    Does the main file name include space?

    It works here with v1.50 and a path with space (not the project name).
     
  4. Cableguy

    Cableguy Expert Licensed User

    No, the project name had no spaces, only the root folder and project folder had. I started by eliminating the space in the project folder but had to also eliminate the one in the root folder.
    I am using v1.50
     
  5. Hypnos

    Hypnos Active Member Licensed User

    Hi Cableguy,

    Want to know some more about this Nextion Display, seems it is very interesting but I'm hesitate to purchase as no library for B4R yet, do you have any sample code or class for this display? Thanks!
     
  6. Cableguy

    Cableguy Expert Licensed User

    You don't need any lib for it. The nextion display stores and loads the UI in an SD card, and communicates with the Arduino or esp by serial com. Depending on the control, it will pass the control I'd and value in the serial string.
    The UI is composed using the Nextion UI editor, and really is easy to use.

    I must confess, I haven't used mine in quite some time, so I think that I haven't kept any code from my tinkering...
     
    Hypnos likes this.
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