LGFX + ESP-IDF + VSCode

[Yelgurk]

Thanks for the great library for working with graphics. Already had time to work in ArduinoIDE environment, but when switching to VSCode + ESP-IDF bundle, there is a problem to connect the library for further development. Maybe you have some manual?

[lovyan03]

@Yelgurk

I am able to use LovyanGFX with VSCode+ESP-IDF without any problems.

you need REQUIRES LovyanGFX in CMakeLists.txt

CMakeLists.txt

idf_component_register(SRCS "main.cpp"
                    INCLUDE_DIRS "."
                    REQUIRES LovyanGFX)

main.cpp

#include <stdio.h>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
#include "sdkconfig.h"

#define LGFX_USE_V1
#define LGFX_AUTODETECT
#include <LovyanGFX.h>
#include <LGFX_AUTODETECT.hpp>

LGFX lcd;

extern "C"
{
  void app_main(void)
  {
    lcd.init();
    while(1) {
      vTaskDelay(1);
      lcd.print("TEST");
    }
  }
}

[Yelgurk]

Thanks for the setup code! I guess I'm one step closer to solving the problem of starting development. However, the following error occurred during the build.

Terminal:

 ...\esp-idf\components\lovyangfx\src\lgfx\internal\memory.h:13:10: fatal error: memory: No such file or directory
 #include <memory>
          ^~~~~~~~
compilation terminated.
[1110/1117] Building C object esp-idf/u8g2/CMakeFiles/__idf_u8g2.dir/csrc/u8g2_d_setup.c.obj
ninja: build stopped: subcommand failed.
The terminal process "C:\Windows\System32\cmd.exe /d /c cmake --build ." terminated with exit code: 1.

Can you tell me what the problem may be and how it can be solved?

[lovyan03]

@Yelgurk LovyanGFX is a C++ library. (NOT c library) In other words, it cannot be used from a *.c file. Please use it from .cpp files as shown in the example.

[Yelgurk]

Yes, I was just making sure of that while studying the library. I'm going to try it now. Thanks for the tips!

[Yelgurk]

@lovyan03 Got it! Please tell me, to select my display and set the connection pins, I need to manually change the lgfx_user file, right? (I use ili9488)

[lovyan03]

@Yelgurk In the lgfx_user folder is a sample configuration. You can copy the file and give it any name you like. You can put the file in the lgfx_user folder, but it may disappear when the library is updated. To be safe, you may copy it to your project folder for use.

[Yelgurk]

@lovyan03 Did I understand correctly that to connect the display I need to do the following procedure:

1. Copy "LGFX_ESP32_sample.hpp" into the project folder;
2. Modify the copied settings file;
3. In main.cpp #include edited <.../LGFX_ESP32_sample.hpp>.

Right?

[lovyan03]

@Yelgurk Yes, I think that's fine. There are no strict rules, so treat it as you see fit.

[Yelgurk]

@lovyan03 With "LGFX_AUTODETECT.hpp" there is no problem to build. When using any of the examples like #include <lgfx_user/LGFX_ESP32_sample.hpp> the following error occurs:

.../esp-idf/components/LovyanGFX/src/lgfx_user/LGFX_ESP32_sample.hpp:21:7: error: using typedef-name 'using LGFX = class lgfx::v1::LGFX' after 'class'
 class LGFX : public lgfx::LGFX_Device

.../esp-idf/components/LovyanGFX/src/lgfx/v1_autodetect/LGFX_AutoDetect_ESP32.hpp:1636:24: note: 'using LGFX = class lgfx::v1::LGFX' has a previous declaration here
 using LGFX = lgfx::LGFX;

To test the build, I used your code above, replacing only #include <LGFX_AUTODETECT.hpp>, with #include <lgfx_user/LGFX_ESP32_sample.hpp>

[lovyan03]

@Yelgurk AUTODETECT is for auto-detection of major boards such as M5Stack and TTGO T-Watch. If you don't want to use AUTODETECT, please remove "# define LGFX_AUTODETECT" this description. Users should not use any functions related to AUTODETECT if they are doing their own configuration.

[Yelgurk]

It's funny, as soon as I figure out the error myself and want to write about what I've got, you manage to give me some tips. Thank you for your time and guidance!

[lovyan03]

@Yelgurk oh… I'm not a free support center… so please read the errors yourself a bit…

[Yelgurk]

I understand. I apologize. I'll be sure to sponsor you with my next paycheck! Thank you for your time and help.

[Eduardo-Brandt]

@Yelgurk LovyanGFX is a C++ library. (NOT c library) In other words, it cannot be used from a *.c file. Please use it from .cpp files as shown in the example.

Hi lovyan03

Thanks for this great Lib. I´ve used it in Arduino with ILI9486 paralell. But in ESP-IDF int the VSCode PlatformIO it not compiles. It shows-up some errors. What I did:

**I put a copy of the lib in project_root_folder\components\

**src\CMakeLists.txt

idf_component_register(SRCS "teste.cpp"
                    INCLUDE_DIRS "."
                    REQUIRES LovyanGFX)

**teste.cpp

#include <stdio.h>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
#include "sdkconfig.h"

#define LGFX_USE_V1
#define LGFX_AUTODETECT
#include <LovyanGFX.h>
#include <LGFX_AUTODETECT.hpp>

LGFX lcd;

extern "C"
{
  void app_main(void)
  {
    lcd.init();
    while(1) {
      vTaskDelay(1);
      lcd.print("TEST");
    }
  }
}

but it raises some errors as shown below:

Reading CMake configuration...
LDF: Library Dependency Finder -> https://bit.ly/configure-pio-ldf
LDF Modes: Finder ~ chain, Compatibility ~ soft
Found 0 compatible libraries
Scanning dependencies...
No dependencies
Building in release mode
Compiling .pio\build\esp32-s3-devkitc-1\components\LovyanGFX\src\lgfx\v1\platforms\esp32\common.o
Compiling .pio\build\esp32-s3-devkitc-1\components\LovyanGFX\src\lgfx\v1\touch\Touch_GT911.o
Compiling .pio\build\esp32-s3-devkitc-1\components\LovyanGFX\src\lgfx\v1\touch\Touch_NS2009.o
Compiling .pio\build\esp32-s3-devkitc-1\components\LovyanGFX\src\lgfx\v1\touch\Touch_STMPE610.o
Compiling .pio\build\esp32-s3-devkitc-1\components\LovyanGFX\src\lgfx\v1\touch\Touch_TT21xxx.o
Compiling .pio\build\esp32-s3-devkitc-1\components\LovyanGFX\src\lgfx\v1\touch\Touch_XPT2046.o
Compiling .pio\build\esp32-s3-devkitc-1\app_trace\app_trace.o
Compiling .pio\build\esp32-s3-devkitc-1\app_trace\app_trace_util.o
Compiling .pio\build\esp32-s3-devkitc-1\app_trace\host_file_io.o
Compiling .pio\build\esp32-s3-devkitc-1\app_trace\port\port_uart.o
Compiling .pio\build\esp32-s3-devkitc-1\app_update\esp_ota_ops.o
Archiving .pio\build\esp32-s3-devkitc-1\esp-idf\app_trace\libapp_trace.a
Compiling .pio\build\esp32-s3-devkitc-1\app_update\esp_ota_app_desc.o
Compiling .pio\build\esp32-s3-devkitc-1\bootloader_support\src\bootloader_common.o
Archiving .pio\build\esp32-s3-devkitc-1\esp-idf\app_update\libapp_update.a
components\LovyanGFX\src\lgfx\v1\platforms\esp32\common.cpp: In function 'void lgfx::v1::i2c::i2c_set_cmd(i2c_dev_t*, uint8_t, uint8_t, uint8_t, bool)':
components\LovyanGFX\src\lgfx\v1\platforms\esp32\common.cpp:812:14: error: 'struct i2c_dev_t' has no member named 'comd0'; did you mean 'comd'?
  812 |       (&dev->comd0)[index].val = cmd_val;
      |              ^~~~~
      |              comd
Compiling .pio\build\esp32-s3-devkitc-1\bootloader_support\src\bootloader_common_loader.o
Compiling .pio\build\esp32-s3-devkitc-1\bootloader_support\src\bootloader_clock_init.o
Compiling .pio\build\esp32-s3-devkitc-1\bootloader_support\src\bootloader_mem.o
Compiling .pio\build\esp32-s3-devkitc-1\bootloader_support\src\bootloader_random.o
*** [.pio\build\esp32-s3-devkitc-1\components\LovyanGFX\src\lgfx\v1\platforms\esp32\common.o] Error 1
====================================================== [FAILED] Took 9.53 seconds ========

I´m stucked on that. Is there some incompatibility of the lib? Or what can I´m doing wrong?

Thank you a lot!

[mhaberler]

@Eduardo-Brandt upgrade ESP-IDF to 5.1.2 and it works.