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

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

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

Let's fill the #PinePhone Framebuffer in #ZigLang

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

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

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

Safely setting #PinePhone's Framebuffer Address in #ZigLang

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

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

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

Setting #PinePhone's Framebuffer properties in #ZigLang

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

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

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

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

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

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

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

#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

Programming #PinePhone's Allwinner A64 Display Engine ... To render Multiple Framebuffers

Article: https://lupyuen.github.io/articles/de2?16#appendix-render-multiple-framebuffers

#PinePhone renders Multiple Framebuffers ... With #ZigLang and Apache #NuttX RTOS 🎉

Article: https://lupyuen.github.io/articles/de2?17#test-multiple-framebuffers

Some more bits of #PinePhone's Display Driver to be reverse engineered and documented

Article: https://lupyuen.github.io/articles/de2?18#appendix-upcoming-features-in-pinephone-display-driver