Renesas（瑞萨）

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Renesas is an official partner of LVGL. Therefore, LVGL contains built-in support for Dave2D (the GPU of Renesas)

Renesas 是 LVGL 的官方合作伙伴。因此，LVGL 包含对 Dave2D 的内置支持( Renesas 的 GPU)和 LVGL 还托管即用型 Renesas 项目。

Dave2D（Dave2D）

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Dave2D is capable of accelerating most of the drawing operations of LVGL:

Rectangle drawing, even with gradients
Image drawing, scaling, and rotation
Letter drawing
Triangle drawing
Line drawing

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.

Dave2D 能够加速 LVGL 的大部分绘图操作：

矩形绘制，即使有渐变
图像绘制、缩放和旋转
字母图画
三角形画法
画线

由于 Dave2D 在后台运行，因此 CPU 可用于其他任务。实际上，在渲染过程中，Dave2D 可以将 CPU 使用率减少一半或三分之一，具体取决于应用程序。

Certified boards（认证板）

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LVGL has certified one Renesas board so far (more will come soon).

到目前为止，LVGL 已认证一块瑞萨电子主板（很快就会有更多主板）。

Get started with the Renesas ecosystem（开始使用瑞萨电子生态系统）

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The official IDE of Renesas is called e² studio. As it's Eclipse-based, it runs on Windows, Linux, and Mac as well.

To get started, just download and install e² studio.

Renesas 的官方 IDE 名为 e² studio 。由于它基于 Eclipse，因此也可以在 Windows、Linux 和 Mac 上运行。

首先，只需下载并安装 e²studio。

Getting started with LVGL（LVGL 入门）

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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:

480MHz, Arm Cortex®-M85 core
2MB Code Flash, 1MB SRAM
MIPI DSI & Parallel Graphics Expansion Ports
4.5 Inch backlit TFT display, 16.7M display colors
480x854 pixels resolution

To get a ready-to-use project, clone the lv_renesas repository:

After that, Import lv_ek_ra8d1 into e² studio, build the project, and flash it.

Note that on the SW1 DIP switch (middle of the board) 7 should be ON, all others are OFF.

LVGL 为 [EK-RA8D1] 提供了一个即用型项目( https://www.renesas.com/us/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/ek-ra8d1-evaluation -kit-ra8d1-mcu-group ) 开发板。从HMI的角度来看，其主要特点是：

480MHz，Arm Cortex®-M85 内核
2MB 代码闪存、1MB SRAM
MIPI DSI 和并行图形扩展端口
4.5 英寸背光 TFT 显示屏，1670 万种显示颜色
480x854 像素分辨率

要获得现成的项目，请克隆 lv_renesas 存储库：

..code:: shell: git clone https://github.com/lvgl/lv_renesas.git --recurse-submodules

之后，将 lv_ek_ra8d1 导入到e²studio中，构建项目并刷新它。

请注意， SW1 DIP 开关（板中间）7 应为 ON，所有其他开关均为 OFF。

Modify the project（修改项目）

Open a demo（打开演示）

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In LVGL_thread_entry, the demos are automatically enabled based on the settings in lv_conf.h.

You can disable all demos (or just comment them out) and call some lv_example_...() functions, or add your custom code.

在 LVGL_thread_entry 中，演示会根据 lv_conf.h 中的设置自动启用。

您可以禁用所有演示（或只是将其注释掉）并调用某些 lv_example_...() 函数，或添加自定义代码。

Configuration（配置）

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lv_conf.h contains the most important settings for LVGL. Namely:
LV_COLOR_DEPTH to set LVGL's default color depth
LV_MEM_SIZE to set the maximum RAM available for LVGL
LV_USE_DAVE2D to enable the GPU

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.

lv_conf.h 包含 LVGL 最重要的设置。即：
LV_COLOR_DEPTH 用于设置 LVGL 的默认颜色深度
LV_MEM_SIZE to 用于设置 LVGL 可用的最大 RAM
LV_USE_DAVE2D 用于启用 GPU 配置.
configuration.xml 包含板和 MCU 的设置。通过打开该文件，可以以可视化方式自定义所有硬件和软件组件。

Support（支持）

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In case of an problems or questions open an issue in the lv_renesas repository.

如果出现问题或疑问，请在 lv_renesas 存储库中提出问题。