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85 lines
3.4 KiB
ReStructuredText
85 lines
3.4 KiB
ReStructuredText
=======
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Renesas
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=======
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`Renesas <https://renesas.com/>`__ is an official partner of LVGL.
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Therefore, LVGL contains built-in support for `Dave2D <https://www.renesas.com/document/mas/tes-dave2d-driver-documentation>`__ (the GPU of Renesas)
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and LVGL also hosts ready-to-use Renesas projects.
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Dave2D
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------
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Dave2D is capable of accelerating most of the drawing operations of LVGL:
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- Rectangle drawing, even with gradients
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- Image drawing, scaling, and rotation
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- Letter drawing
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- Triangle drawing
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- Line drawing
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As Dave2D works in the background, the CPU is free for other tasks. In practice, during rendering, Dave2D can reduce the CPU usage by half or to one-third, depending on the application.
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Certified boards
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----------------
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LVGL has `certified <https://lvgl.io/certificate>`__ one Renesas board so far (more will come soon).
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.. raw:: html
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<iframe width="560" height="315" src="https://www.youtube.com/embed/LHPIqBV_MGA?si=mtW3g-av56bCdR4k" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
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Get started with the Renesas ecosystem
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--------------------------------------
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The official IDE of Renesas is called `e² studio <https://www.renesas.com/us/en/software-tool/e-studio?gad_source=1&gclid=CjwKCAjw5ImwBhBtEiwAFHDZx2V3lumaenbyJnc5Ctrclr_lEQM3G22iZgB-4F92OVLCI7xmzp1YQRoCcRgQAvD_BwE>`__. As it's Eclipse-based, it runs on Windows, Linux, and Mac as well.
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To get started, just download and install e² studio.
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Getting started with LVGL
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-------------------------
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LVGL provides a ready-to-use project for the `EK-RA8D1 <https://www.renesas.com/us/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/ek-ra8d1-evaluation-kit-ra8d1-mcu-group>`__ development board. Its main features from the HMI's point of view are:
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- 480MHz, Arm Cortex®-M85 core
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- 2MB Code Flash, 1MB SRAM
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- MIPI DSI & Parallel Graphics Expansion Ports
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- 4.5 Inch backlit TFT display, 16.7M display colors
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- 480x854 pixels resolution
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To get a ready-to-use project, clone the `lv_renesas <https://github.com/lvgl/lv_renesas.git>`__ repository:
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.. code:: shell
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git clone https://github.com/lvgl/lv_renesas.git --recurse-submodules
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After that, *Import* ``lv_ek_ra8d1`` into e² studio, build the project, and flash it.
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Note that on the ``SW1`` DIP switch (middle of the board) 7 should be ON, all others are OFF.
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Modify the project
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------------------
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Open a demo
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~~~~~~~~~~~
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In `LVGL_thread_entry <https://github.com/lvgl/lv_renesas/blob/master/lv_ek_ra8d1/src/LVGL_thread_entry.c>`__, the demos are automatically enabled based on the settings in `lv_conf.h <https://github.com/lvgl/lv_renesas/blob/master/lv_ek_ra8d1/src/lv_conf.h>`__.
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You can disable all demos (or just comment them out) and call some ``lv_example_...()`` functions, or add your custom code.
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Configuration
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~~~~~~~~~~~~~
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``lv_conf.h`` contains the most important settings for LVGL. Namely:
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- ``LV_COLOR_DEPTH`` to set LVGL's default color depth
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- ``LV_MEM_SIZE to`` set the maximum RAM available for LVGL
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- ``LV_USE_DAVE2D`` to enable the GPU
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``configuration.xml`` contains the settings for the board and the MCU. By opening this file, all the hardware and software components can be customized in a visual way.
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Support
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-------
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In case of an problems or questions open an issue in the `lv_renesas <https://github.com/lvgl/lv_renesas/issues>`__ repository.
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