Lup Yuen Lee 李立源 @lupyuen@qoto.org

Python Crossing ... No more night walks ew 😲

Plenty to document for #PinePhone's Allwinner A64 Display Engine ... While we're building the #NuttX Driver in #ZigLang 🤔

Source: https://github.com/lupyuen/pinephone-nuttx/blob/main/render.zig#L527-L568

#ZigLang renders graphics with #PinePhone's Allwinner A64 Display Engine ... On Apache #NuttX RTOS 🎉

Source: https://github.com/lupyuen/pinephone-nuttx/blob/main/render.zig#L53-L162

Now porting #PinePhone's Allwinner A64 Display Engine to Apache #NuttX RTOS ... With a little help from #ZigLang 👍

https://github.com/lupyuen/pinephone-nuttx/blob/main/render.zig#L312-L380

Apache #NuttX RTOS coming soon to #RISCV BL808 👍

https://twitter.com/btashton/status/1586381334439923713?t=w5xRRUR74HGK2O1Zg_aFyw&s=19

Here's how we program #PinePhone's Allwinner A64 Display Engine to render 3 Framebuffers

https://lupyuen.github.io/articles/de?15#appendix-programming-the-allwinner-a64-display-engine

Overview of #PinePhone's Allwinner A64 Display Engine

https://lupyuen.github.io/articles/de?12#appendix-overview-of-allwinner-a64-display-engine

Now that we understand #PinePhone's A64 Display Engine ... Here's how we'll create the PinePhone Display Driver for Apache #NuttX RTOS

https://lupyuen.github.io/articles/de?11#nuttx-display-driver-for-pinephone

#PinePhone's p-boot Bootloader is super helpful for deciphering the Allwinner A64 Display Engine

https://lupyuen.github.io/articles/de?10#p-boot-display-code

Here's how we test #PinePhone's A64 Display Engine ... By booting Apache #NuttX RTOS on microSD

https://lupyuen.github.io/articles/de?9#test-pinephone-display-engine

#PinePhone's A64 Display Engine supports blending of 3 Framebuffers ... Let's render all 3 Framebuffers

https://lupyuen.github.io/articles/de?8#render-circle-overlay

#PinePhone's A64 Display Engine can render Framebuffers as Overlays ... Let's render a Square Overlay

https://lupyuen.github.io/articles/de?7#render-square-overlay

Updates to #PinePhone's Framebuffers are pushed instantly to the LCD Display ... Because the Framebuffers are connected to the A64 Display Engine over DMA

https://lupyuen.github.io/articles/de?6#animate-madelbrot-set

Let's render something infinitely fascinating with #PinePhone's A64 Display Engine: Mandelbrot Set

https://lupyuen.github.io/articles/de?5#render-mandelbrot-set

Maybe Apache #NuttX RTOS on #Pine64 Quartz64? 🤩

https://www.linkedin.com/feed/update/urn:li:activity:6991217306840293376?commentUrn=urn%3Ali%3Acomment%3A%28activity%3A6991217306840293376%2C6991330231714254848%29

Rendering Colour Blocks with #PinePhone's A64 Display Engine

https://lupyuen.github.io/articles/de?4#render-colours

#PinePhone's A64 Display Engine handles DMA, Overlay, Scaling and Blending of the Framebuffers

https://lupyuen.github.io/articles/de?3#display-engine-in-allwinner-a64

#PinePhone graphics rendering gets complicated ... Because the ST7703 LCD Controller is RAM-less

https://lupyuen.github.io/articles/de?2#display-rendering-on-pinephone

Bedtime Reading

https://www.oreilly.com/library/view/version-control-with/9781492091189/

#PinePhone renders graphics to the LCD Display ... By calling the A64 Display Engine and Timing Controller

https://lupyuen.github.io/articles/de?2#display-rendering-on-pinephone