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    T-rgb (half circle)

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    t-rgb
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    • teastain2
      teastain2 @basvandepavert last edited by

      @basvandepavert What kind of errors? Have you gotten a basic test sketch to compile and run?
      Have you been to the GitHub repository?
      https://github.com/Xinyuan-LilyGO/T-RGB
      -Terry

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        basvandepavert @teastain2 last edited by

        @teastain2 Yes I've downloaded the examples from there but none will compile in the Arduino IDE. I am not certain which board I should select though. At this moment I'm just interested in getting the basics running, not more than a simple "Hello world" example. From there I can develop the rest.
        I'm building an altitude-indicator for my gliderplane, using the BMP280 sensor. I have it running on an Arduino Nano, but I want to display clock-like hands on a round display.
        Any help is welcome, since I cannot get any example to compile and upload.
        (I know the Nano is an AVR board and the T-RGB is ESP32, so modifications will be necessary)

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          basvandepavert @teastain2 last edited by

          @teastain2
          Hi Terry, after some experiments with boards I now get this error:

          Sketch uses 735085 bytes (23%) of program storage space. Maximum is 3145728 bytes.
          Global variables use 20632 bytes (6%) of dynamic memory, leaving 307048 bytes for local variables. Maximum is 327680 bytes.
          esptool.py v4.5.1
          Serial port COM16

          A fatal error occurred: Could not open COM16, the port doesn't exist
          Failed uploading: uploading error: exit status 2

          However, I'm sure the board is connected to COM16. Obviously something wrong in my installation, but what....? I'm lost. I re-installed most of the environment, but still this error. It also fails on other ports (changed port in windows device manager).
          Looks like esptool.py v4.5.1 has a problem somewhere, but I do not know what is wrong or how to fix this.

          Your help is highly appreciated !!!

          teastain2 1 Reply Last reply Reply Quote 0
          • teastain2
            teastain2 @basvandepavert last edited by

            @basvandepavert The S3 ESP32 variant can be tricky with connection.
            On Arduino IDE select ESP32S3-Dev Module
            If you do not see a port, press the Boot button and hold. Then press Reset button and release, then release Boot. See if a port opens up.
            This is just a start, get back to me of you need more help!
            -Terry

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            • teastain2
              teastain2 @teastain2 last edited by

              @teastain2 Simple Serial Monitor test code:

              bool ticktock = true;
              
              void setup() {
              Serial.begin (115200);
              }
              
              void loop() {
              ticktock = !ticktock;
                if (ticktock) {
                  Serial.println("tick");  
                } else {
                  Serial.println("tock");
                }
              delay (1000);
              }
              
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              • B
                basvandepavert @teastain2 last edited by

                @teastain2
                Hi Terry, this tick-tock works! I see the output in the Serial monitor
                So, connection is OK

                I use the board LilyGo T-Display-S3 an I can now compile, upload and run the display.ino example:-)

                However, the factory.ino gives me many errors that seem to be related to the lvgl library. There are many lvgl libraries, which one do I need to install for the factory.ino to compile?

                Again, your help is really preventing me from giving up!!

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                • B
                  basvandepavert @teastain2 last edited by

                  @teastain2
                  When I compile the factory.ino I get these messages:
                  H:\Bas\Arduino\Sketches\T-RGB\factory\photo2.c:24:30: error: unknown type name 'LV_ATTRIBUTE_LARGE_CONST'
                  const LV_ATTRIBUTE_MEM_ALIGN LV_ATTRIBUTE_LARGE_CONST LV_ATTRIBUTE_IMG_PHOTO2 uint8_t photo2_map[] = {
                  ^~~~~~~~~~~~~~~~~~~~~~~~
                  H:\Bas\Arduino\Sketches\T-RGB\factory\photo2.c:24:87: error: expected '=', ',', ';', 'asm' or 'attribute' before 'photo2_map'
                  const LV_ATTRIBUTE_MEM_ALIGN LV_ATTRIBUTE_LARGE_CONST LV_ATTRIBUTE_IMG_PHOTO2 uint8_t photo2_map[] = {
                  ^~~~~~~~~~
                  H:\Bas\Arduino\Sketches\T-RGB\factory\photo2.c:1959:7: error: unknown type name 'lv_img_dsc_t'
                  const lv_img_dsc_t photo2 = {
                  ^~~~~~~~~~~~
                  H:\Bas\Arduino\Sketches\T-RGB\factory\photo2.c:1960:3: error: field name not in record or union initializer
                  .header.cf = LV_IMG_CF_TRUE_COLOR,
                  ^
                  And a lot more, that cannot be included in this message (too many characters)

                  Compilation error: unknown type name 'LV_ATTRIBUTE_LARGE_CONST'

                  teastain2 1 Reply Last reply Reply Quote 0
                  • teastain2
                    teastain2 @basvandepavert last edited by teastain2

                    @basvandepavert Good morning.Sounds like excellent progress!
                    Did you copy all files from:
                    https://github.com/Xinyuan-LilyGO/T-RGB/tree/main/lib
                    and copy them to your libraries folder, overwriting (replacing), not merging them?
                    LilyGO is notorious for modifying (forking) established well know libraries to use on their products.

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                    • B
                      basvandepavert @teastain2 last edited by

                      @teastain2
                      Thank you Terry for this suggestion. I will try this in the coming days ....
                      Infortunately I have a medical issue that requires hospitalization for some days...

                      I sincerely hope I can come back to you in a couple of days
                      Thanks Bas

                      teastain2 1 Reply Last reply Reply Quote 0
                      • teastain2
                        teastain2 @basvandepavert last edited by

                        @basvandepavert Take care!

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                        • B
                          basvandepavert @teastain2 last edited by

                          @teastain2
                          Hi Terry, one last request before I'll be down for a couple days:

                          1. Yes, I copied all these files from https://github.com/Xinyuan-LilyGO/T-RGB/tree/main/lib
                          2. There is an example that I would very much use for my altimeter project:
                            https://github.com/Xinyuan-LilyGO/T-RGB/tree/main/lib/Arduino_GFX/examples/Clock
                            But, as expected, I cannot complie this sketch. Can you have a look at this example and try to get it running on the T-RGB? If you succeed, I then know that it is possible!

                          Thanks so far, Bas van de Pavert

                          teastain2 1 Reply Last reply Reply Quote 0
                          • teastain2
                            teastain2 @basvandepavert last edited by

                            @basvandepavert Sadly I do not have a T-RGB to use!
                            My advice is based on other LilyGO products using ESP32 S3.
                            Can you get ANY of the T-RGB examples running?
                            Regards, Terry

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                            • B
                              basvandepavert @teastain2 last edited by

                              @teastain2
                              Hi Terry, I'm back in business again!
                              And... I have solved the problems, thanks to this link:
                              Device declaration

                              My basic altitudemeter is working now. I still have to 'clean' my sketch. Afterwards I will post the code here.

                              Thank you again for helping me.

                              teastain2 1 Reply Last reply Reply Quote 1
                              • teastain2
                                teastain2 @basvandepavert last edited by

                                @basvandepavert Thanks for getting back to me!
                                Let me know!
                                -Terry

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