Arduino Compilation Issue

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Environment ( 実行環境 )

MCU or Board name: ESP32-S3 (Makerlabs MATouch 7" TFT)
Panel Driver IC: GT911
Bus type: Parallel16
LovyanGFX version: v1.1.16
FrameWork version: ArduinoESP32 v3.1.0
Build Environment: ArduinoIDE2 (V2.3.3)
Operating System: macOS Sequoia 15.0.1 (ARM64)

Problem Description ( 問題の内容 )

Unable to compile any Arduino sketch using the LovyanGFX library. Output throws an error related to 'lcd_periph_signals' not being declared in scope (please refer below). I have supplied manufacturer example of Lovyan usage for analysis.

Expected Behavior ( 期待される動作 )

Successful compilation.

Actual Behavior ( 実際の動作 )

Error message relating to 'lcd_periph_signals' declaration as below:

/Users/user/Arduino/libraries/LovyanGFX/src/lgfx/v1/platforms/esp32s3/Bus_RGB.cpp:159:19: error: 'lcd_periph_signals' was not declared in this scope; did you mean 'lcd_periph_rgb_signals'?
  159 |       auto sigs = lcd_periph_signals.panels[_cfg.port];
      |                   ^~~~~~~~~~~~~~~~~~
      |                   lcd_periph_rgb_signals
/Users/user/Arduino/libraries/LovyanGFX/src/lgfx/v1/platforms/esp32s3/Bus_RGB.cpp:307:31: error: 'lcd_periph_signals' was not declared in this scope; did you mean 'lcd_periph_rgb_signals'?
  307 |     esp_intr_alloc_intrstatus(lcd_periph_signals.panels[_cfg.port].irq_id, isr_flags,
      |                               ^~~~~~~~~~~~~~~~~~
      |                               lcd_periph_rgb_signals

The complete output is found here: https://gist.github.com/brodendan/b29762f0bc1aab73dc1f10cf6782509a#file-error-output

Steps to reproduce ( 再現のための前提条件 )

Create Arduino sketch with below source (or copy from https://github.com/Makerfabs/ESP32-S3-Parallel-TFT-with-Touch-7inch/tree/main/example/lovyanGFX/7inch800)
Compile sketch.

// If possible, attach a picture of your setup/wiring here. This is unmodified unit from Makerlabs: https://www.makerfabs.com/esp32-s3-parallel-tft-with-touch-7-inch.html

Code to reproduce this issue ( 再現させるためのコード )

Please refer to: https://gist.github.com/brodendan/b29762f0bc1aab73dc1f10cf6782509a

hi,

Please group all feedback in this issue and close the redundant #623, as it is likely the same solution for both arduino IDE and esp-idf.

LovyanGFX neither supports release versions of arduino-core (this excludes beta/alpha/RC) nor esp-idf untagged versions, however it does support lcd_periph_rgb_signals() function, so this is likely a bug that will need to be solved when idf 5.4 becomes officially supported.

Possible cause of the problem: LGFX uses the SOC_LCDCAM_RGB_LCD_SUPPORTED macro (see SoC table) to confirm the presence of lcd_periph_rgb_signals(), but that macro is disabled or out of scope and the test fails when esp-idf version >= 5.1.4.

#if SOC_LCDCAM_RGB_LCD_SUPPORTED // <<<< this test fails
      auto sigs = &lcd_periph_rgb_signals.panels[_cfg.port];
#else
      auto sigs = &lcd_periph_signals.panels[_cfg.port];
#endif

a quick solve for you only (this may break compilation for other devices/versions) is to add this after the includes in esp32s3/Bus_RGB.cpp

#if (ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 4, 0))
  #define lcd_periph_signals lcd_periph_rgb_signals
#endif

please confirm the effectiveness of that temporary workaround so I can think of a cleaner way to address the problem :wink:

lovyan03 / LovyanGFX