Lup Yuen Lee 李立源 @lupyuen@qoto.org

#PinePhone's I2C Touch Panel ... Here's everything we know ... Let's read the Touch Panel with Apache #NuttX RTOS!

Source: https://lupyuen.github.io/articles/pio#touch-panel

OSCS for NuttX? 🤔

Apache #NuttX Mainline supports I2C on #PinePhone's Allwinner A64 🎉

Source: https://github.com/apache/nuttx/pull/8009

Booting Apache #NuttX RTOS on #PinePhone ... With a microSD Card

Article: https://lupyuen.github.io/articles/what?5#boot-nuttx

Here's how we build Apache #NuttX RTOS for #PinePhone

Article: https://lupyuen.github.io/articles/what?4#build-nuttx

To run Apache #NuttX RTOS on #PinePhone we need: 1️⃣ Serial Debug Cable 2️⃣ microSD Card

Article: https://lupyuen.github.io/articles/what?4#build-nuttx

Someday students might use Apache #NuttX RTOS to experiment with #PinePhone 🤔

Article: https://lupyuen.github.io/articles/what?3#smartphone-education

Apache #NuttX RTOS for #PinePhone isn't ready as a Daily Driver ... But it might help Learners

Article: https://lupyuen.github.io/articles/what?2#smaller-and-simpler

Apache #NuttX RTOS for #PinePhone ... What is it? How will we use it? All shall be explained here

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

Up Next: Apache #NuttX Touch Panel Driver for #PinePhone

Article: https://lupyuen.github.io/articles/fb?15#whats-next

Temp Fix for missing #PinePhone Pixels on #NuttX: Copy the RAM Framebuffer to itself ... Perm Fix: Flush the CPU Cache

Article: https://lupyuen.github.io/articles/fb?12#fix-missing-pixels

#PinePhone Pixels mysteriously missing on #NuttX RTOS ... But we have a temp workaround

Article: https://lupyuen.github.io/articles/fb?11#mystery-of-the-missing-pixels

Our #NuttX Framebuffer for #PinePhone supports these operations

Article: https://lupyuen.github.io/articles/fb?10#framebuffer-operations

Interesting book on RTOS ... Pricey though 🤔

What's inside our #NuttX Framebuffer Driver for #PinePhone

Article: https://lupyuen.github.io/articles/fb?8#pinephone-framebuffer-driver

Rendering graphics with #LVGL on #PinePhone ... With Apache #NuttX RTOS

Article: https://lupyuen.github.io/articles/fb?7#lvgl-graphics-library

Hacker News solved the Mystery of the Missing #PinePhone Pixels 🤔

Source: https://news.ycombinator.com/item?id=34186806

Let's render some Colour Blocks in our #NuttX Framebuffer for #PinePhone

Article: https://lupyuen.github.io/articles/fb?4#render-blocks

#PinePhone pixels are in 32-bit ARGB 8888 format

Article: https://lupyuen.github.io/articles/fb?3#render-grey-screen

Blasting Pixels to #PinePhone Framebuffer ... On Apache #NuttX RTOS

Article: https://lupyuen.github.io/articles/fb?3#render-grey-screen