Lup Yuen Lee 李立源 @lupyuen@qoto.org

#PinePhone's Allwinner A64 Display Engine supports up to 3 Framebuffers ... Here's how we render the 3 Framebuffers in #ZigLang

Article: https://lupyuen.github.io/articles/de2?15#multiple-framebuffers

Testing our #ZigLang Driver for #PinePhone's A64 Display Engine ... By booting Apache #NuttX RTOS on microSD

Article: https://lupyuen.github.io/articles/de2?12#test-pinephone-display-driver

How we enable #PinePhone's A64 Display Engine Blender in #ZigLang

Article: https://lupyuen.github.io/articles/de2?11#enable-blender

Our #ZigLang Driver configures #PinePhone's A64 Display Engine Blender ... To render a Framebuffer on Apache #NuttX RTOS

Article: https://lupyuen.github.io/articles/de2?10#configure-blender

u13 and other odd integers ... No problem for #ZigLang 👍

Article: https://lupyuen.github.io/articles/de2?9#framebuffer-attributes

Setting #PinePhone's Framebuffer properties in #ZigLang

Article: https://lupyuen.github.io/articles/de2?8#framebuffer-pitch

Compile-Time Asserts in #ZigLang ... Super helpful for verifying #PinePhone's Hardware Addresses

Article: https://lupyuen.github.io/articles/de2?6#framebuffer-address

Will #PinePhone Blend? Yep for sure!

Article: https://lupyuen.github.io/articles/de2?7#configure-blender

Safely setting #PinePhone's Framebuffer Address in #ZigLang

Article: https://lupyuen.github.io/articles/de2?6#framebuffer-address

How we configure #PinePhone's Framebuffer ... By setting the A64 Display Engine registers

Article: https://lupyuen.github.io/articles/de2?5#configure-framebuffer

Let's fill the #PinePhone Framebuffer in #ZigLang

Article: https://lupyuen.github.io/articles/de2?4#fill-framebuffer

Here's how we define #PinePhone's Framebuffer in #ZigLang ... With a little help from Apache #NuttX RTOS

Article: https://lupyuen.github.io/articles/de2?3#graphics-framebuffer

#PinePhone Framebuffer: 720 x 1440, 4 bytes per pixel (ARGB 8888)

Article: https://lupyuen.github.io/articles/de2?2#graphics-framebuffer

Building a #PinePhone Display Engine Driver in #ZigLang for Apache #NuttX RTOS ... All shall be explained in this article

Article: https://lupyuen.github.io/articles/de2?1

We might have created an "Executable Specification" for #PinePhone's Hardware ... Someday we can make a PinePhone Emulator in FPGA! 🤔

Source: https://github.com/lupyuen/pinephone-nuttx/blob/main/render.zig#L322-L353

#ZigLang's Compile-Time Asserts are super helpful ... For checking that #NuttX Framebuffers are defined correctly for #PinePhone 👍

Source: https://github.com/lupyuen/pinephone-nuttx/blob/main/render.zig#L57-L76

#PinePhone's Init Sequence for Allwinner A64 Display Engine ... Now fully documented and ready to implement for Apache #NuttX RTOS 🎉

Source: https://lupyuen.github.io/articles/de?2#appendix-initialising-the-allwinner-a64-display-engine

Fancy modules for #PinePhone's Allwinner A64 Display Engine

Source: https://lupyuen.github.io/articles/de?1#appendix-initialising-the-allwinner-a64-display-engine

Watchmen at the Public Library

Slowly documenting the Init Sequence for #PinePhone's Allwinner A64 Display Engine

Source: https://lupyuen.github.io/articles/de#appendix-initialising-the-allwinner-a64-display-engine