add Raspberry-Pico-LVGL README.md

bsp/raspberry-pico/applications/lvgl/README.md

+# Get Raspberry Pi PICO Running on RT-Thread RTOS with an Opensource Light Versatile Graphics Library
+
+## Hardware: 
+
+- [Raspberry Pi PICO](https://www.raspberrypi.com/products/raspberry-pi-pico/)
+
+- [TFT-SPI ST7789](https://pdf1.alldatasheet.com/datasheet-pdf/view/1170800/SITRONIX/ST7789H2.html)
+
+  - Single chip TFT-LCD Controller/Driver with On-chip Frame Memory (FM) 
+
+  - Display Resolution: 240*RGB (H) *320(V) 
+
+  - Frame Memory Size: 240 x 320 x 18-bit = 1,382,400 bits 
+
+  - LCD Driver Output Circuits 
+
+    \- Source Outputs: 240 RGB Channels 
+
+    \- Gate Outputs: 320 Channels 
+
+    \- Common Electrode Output 
+
+## Software:
+
+- Opensource [RT-Thread IoT OS](https://www.rt-thread.io/) Project
+- [RT-Thread Studio](https://www.rt-thread.io/studio.html) IDE (Free)
+- Opensource [LVGL](https://lvgl.io/) Project
+
+## Add LVGL Software Package
+
+* Double-click `RT-Thread Settings` to enter the configuration page.
+
+![](.\img_en\1.png)
+
+* Click `Add it now`
+
+![](.\img_en\2.png)
+
+* Choose the packages of LVGL and lv_music_demo 
+
+![](.\img_en\3.png)
+
+## Enable LVGL for LCD 
+
+![](.\img_en\4.png)
+
+## Configure Screen Parameter
+
+Select the screen size according to your project requirements (This tutorial is using ST7789).
+
+![](.\img_en\5.png)
+
+## LVGL Display Interface Adopting
+
+![](.\img_en\6.png)
+
+
+
+![]()![7](.\img_en\7.png)
+
+
+
+![](.\img_en\8.png)
+
+## Presentation
+
+<iframe src="//player.bilibili.com/player.html?aid=893079529&bvid=BV1oP4y1E7Md&cid=481212104&page=1" scrolling="no" border="0" frameborder="no" framespacing="0" allowfullscreen="true"> </iframe>