Allwinner R128 runs LVGL on SPI TFT GUI

aleksib · Published on 2023-10-23 14:07

Allwinner R128 runs LVGL on SPI TFT GUI [Copy link]

# LVGL and SPI TFT GUI This time we use Dshan_Display Module, as shown below: ![Insert picture description here](https://img-blog.csdnimg.cn/97448d6c29e9468cbf826b816dacaf40.png#pic_center) The pin configuration is as follows: | R128 Devkit | TFT Module| | ----------- | -------- | | PA12 | CS | | PA13 | SCK | | PA18 | MOSI | | PA9 | PWM | | PA20 | RESET | | PA19 | RS | | 3V3 | 3.3V | | GND | GND | ![Insert picture description here](https://img-blog.csdnimg.cn/9e1e25016f684c7a94323299cbe4bca5.png#pic_center) ## Loading scheme The development board we use is R128-Devkit, and we need to develop applications for the C906 core, so the loading scheme selects `r128s2_module_c906` ```bash $ source envsetup.sh $ lunch_rtos 1 ``` ![Insert picture description here](https://img-blog.csdnimg.cn/61ab8e1f0b0a499895eda3b1a6732a71.png#pic_center) ## Configure SPI LCD driver For driver configuration, please refer to the article "SPI driver TFT LCD screen" for configuration. ## Configure LVGL software package Run `mrtos_menuconfig` to enter the configuration page. Find the relevant software package at the following address and check it. ``` System components ---> thirdparty components ---> [*] Littlevgl-8 ---> [*] lvgl examples [*] lvgl-8.1.0 use sunxifb double buffer [*] lvgl-8.1.0 use sunxifb cache ``` ![Insert image description here](https://img-blog.csdnimg.cn/6c55096da6124752b1bc0f6764ad9c89.png#pic_center) Note that `lv_examples` and `lv_g2d_test` cannot be checked at the same time, otherwise a duplicate definition error will be reported. > Forum question: [I want to transplant LVGL to R128 according to the tutorial but failed](https://bbs.aw-ol.com/topic/4421/share/1) ![Insert image description here](https://img-blog.csdnimg.cn/5a6f0f8c49834ef9a0c5e216b1701ff3.png#pic_center) The error is as follows: ![Insert image description here](https://img-blog.csdnimg.cn/6f534f6065f049058a90686332b93f46.png#pic_center) If `update_mbr_failed` appears, please refer to [FAQ](/others/faq) Modify the partition table to increase the partition capacity## Modify LVGL Display configuration Enter `lichee/rtos-components/thirdparty/littlevgl-8/lv_examples/src/lv_conf.h`, find `LV_COLOR_DEPTH` and modify it to 16 bits, and set `LV_COLOR_16_SWAP` to 1 to swap the red and blue colors. ![Insert picture description here](https://img-blog.csdnimg.cn/a5a115055aa04842bde3feb6ea284be2.png#pic_center) ## Test After compiling, packaging and flashing, enter `lv_examples` in the console to view related commands. ![Insert image description here](https://img-blog.csdnimg.cn/613142ae22ab4266b8d81c4ee90e07e4.png#pic_center) Run `lv_examples 1` to display the LVGL interface on the screen. ![Insert image description here](https://img-blog.csdnimg.cn/80d4ccec34ab4cb182d5672c5af216df.png#pic_center) ![Insert image description here](https://img-blog.csdnimg.cn/0d1f4a6d681c4b1ab7d50d0a83d601ce.png#pic_center)

bobo214 · Published on 2023-10-24 15:13

Is this LVGL embedded in the Linux system?

freebsder · Published on 2023-10-25 16:32

bobo214 posted on 2023-10-24 15:13 Is this embedded LVGL in the Linux system?

It seems that

Martin_chen6

It seems that

Allwinner R128 runs LVGL on SPI TFT GUI [Copy link]

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