Lup Yuen Lee 李立源 @lupyuen@qoto.org

Inside the #LVGL Demo App for #NuttX RTOS

https://lupyuen.github.io/articles/st7789?12#lvgl-demo-app

Running the ST7789 Display Driver on #NuttX RTOS

https://lupyuen.github.io/articles/st7789?11#run-st7789-driver

Here's how we configure the ST7789 Display Driver in #NuttX RTOS

https://lupyuen.github.io/articles/st7789?10#configure-nuttx

Why is AAAA pink? Because of RGB565 colour encoding

https://lupyuen.github.io/articles/st7789?9#rgb565-colour-encoding

Let's test the ST7789 Display Driver on #NuttX RTOS ... And render a pink screen!

https://lupyuen.github.io/articles/st7789?8#render-pink-screen

Here's how we load the ST7789 Display Driver on #NuttX RTOS

https://lupyuen.github.io/articles/st7789?7#st7789-driver

Before loading the #NuttX ST7789 Driver, we load the LCD Driver "/dev/lcd0"

https://lupyuen.github.io/articles/st7789?6#load-st7789-driver

#BL602 talks to ST7789 only in SPI Mode 3 ... Wonder why 🤔

https://lupyuen.github.io/articles/st7789?5#spi-mode-3

How we fixed SPI Send on #BL602 #NuttX

https://lupyuen.github.io/articles/st7789?4#fix-spi-send

#NuttX RTOS controls ST7789's Data / Command Pin through the SPI Driver

https://lupyuen.github.io/articles/st7789?3#st7789-data--command-pin

Here's how we connect ST7789 Display to #BL602 and #ESP32-C3

https://lupyuen.github.io/articles/st7789?2#connect-st7789-display

Apache #NuttX RTOS renders graphics on ST7789 Display with #LVGL Library ... All shall be explained in this article

https://lupyuen.github.io/articles/st7789?1

#NuttX RTOS is bundled with #LVGL 7.3.0 ... But latest version of LVGL is 8.2.0 ... And LVGL 8 is NOT backward compatible with LVGL 7 🤔

https://github.com/lupyuen/st7789-nuttx#lvgl-version

#LVGL Demo runs OK with ST7789 Display on Apache #NuttX RTOS! 🎉

https://github.com/lupyuen/st7789-nuttx#run-lvgl-demo

#NuttX's #LVGL Demo App inits the ST7789 Display, renders some widgets and handles LVGL Events

https://github.com/lupyuen/st7789-nuttx#lvgl-demo-app

Let's test the #LVGL Library and Demo App bundled with Apache #NuttX RTOS

https://github.com/lupyuen/st7789-nuttx#configure-nuttx

ST7789 Display Driver feels laggy on #BL602 #NuttX ... Hope to fix this with SPI DMA

https://github.com/lupyuen/st7789-nuttx#render-pink-screen

Apache #NuttX RTOS boots with a Pink Screen on ST7789 Display! 🎉

https://github.com/lupyuen/st7789-nuttx#render-pink-screen

Why is AAAA pink? Because ST7789 Display encodes colours as RGB565 ... 5 bits of Red, 6 bits of Green, 5 bits of Blue

https://github.com/lupyuen/st7789-nuttx#render-pink-screen

Cute round LCD ... Supported by Apache #NuttX RTOS

https://www.makerfabs.com/gc9a01-1.28-inch-round-lcd-module.html