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150466f598
- Remove the EXAMPLE_LCD_IMAGE_SOURCE Kconfig option (embedded binary vs
file system) and always load images from LittleFS.
- Convert the PNG images into LZ4-compressed LVGL binary images (.bin)
at
build time using LVGLImage.py, and flash them to a LittleFS partition.
- Upgrade lvgl to 9.6.0 and add the espressif/lz4 component; link the
external LZ4 library into lvgl.
- Split the example: main.c focuses on the esp_lcd i80 API, while the
LVGL
porting (lvgl_port.c) and the UI (lvgl_demo_ui.c) live in separate
files.
- Rework the demo animation to use the LVGL animation engine (lv_anim)
with
easing paths instead of a manual software timer for smoother
rendering.
- Remove the embedded C image arrays (esp_logo.c, esp_text.c) and the
obsolete sdkconfig.ci.image_in_{bin,fs} variants.
20 lines
730 B
CMake
20 lines
730 B
CMake
# LVGLImage.py needs pypng and lz4. Install them into the IDF Python env
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# when this example is configured, instead of adding them to IDF requirements.
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idf_build_get_property(python PYTHON)
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execute_process(
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COMMAND ${python} -c "import png, lz4.block"
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RESULT_VARIABLE example_lvgl_image_py_ok
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OUTPUT_QUIET
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ERROR_QUIET)
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if(NOT example_lvgl_image_py_ok EQUAL 0)
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message(STATUS "Installing pypng and lz4 for LVGL image conversion")
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execute_process(
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COMMAND ${python} -m pip install pypng lz4
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RESULT_VARIABLE example_lvgl_image_pip_ok)
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if(NOT example_lvgl_image_pip_ok EQUAL 0)
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message(FATAL_ERROR "Failed to install pypng and lz4 (required by LVGLImage.py)")
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endif()
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endif()
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