Lup Yuen Lee 李立源 @lupyuen@qoto.org

Apache #NuttX Apps render graphics by calling the Framebuffer Interface

Article: https://lupyuen.github.io/articles/fb?2#framebuffer-interface

Apache #NuttX RTOS comes with a Framebuffer App that runs on #PinePhone

Article: https://lupyuen.github.io/articles/fb?2#framebuffer-demo

How will Apache #NuttX Apps render graphics on #PinePhone? What's inside the Framebuffer Driver for PinePhone? All shall be explained in this article

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

LVGL on Apache #NuttX RTOS on #PinePhone 🤩 ... No touch input yet 😬

Source: https://github.com/lupyuen/pinephone-nuttx#lvgl-on-nuttx-on-pinephone

Bedtime Reading ... NXP i.MX8 Reference Manual

#BL602 FCC Antenna Test Report

https://fccid.io/2A9HW-BL602/Test-Report/Antenna-specifications-6296449

Fixed #PinePhone's Framebuffer for Apache #NuttX RTOS ... By copying the RAM Framebuffer to itself 🤔

Source: https://github.com/lupyuen/pinephone-nuttx#fix-missing-pixels-in-pinephone-image

Missing #PinePhone pixels are appearing in a curious pattern ... Gotta fix this lag in our Apache #NuttX Framebuffer 🤔

Source: https://github.com/lupyuen/pinephone-nuttx#missing-pixels-in-pinephone-image

ROYGBV is missing some ROY pixels ... Now fixing the Apache #NuttX Framebuffer on #PinePhone 🤔

Source: https://github.com/lupyuen/pinephone-nuttx#missing-pixels-in-pinephone-image

#PinePhone's LCD Panel is officially supported by Apache #NuttX Kernel! 🎉

Source: https://github.com/apache/nuttx/pull/7977

Up Next: #NuttX Framebuffer Driver for #PinePhone

Article: https://lupyuen.github.io/articles/lcd?9#framebuffer-driver

Our #NuttX Display Driver for #PinePhone is now complete! Here's how we call all the bits in the NuttX Kernel

Article: https://lupyuen.github.io/articles/lcd?8#complete-display-driver

Rendering of graphics on #PinePhone's LCD Display is handled by Allwinner A64's Display Engine and Timing Controller TCON0

Article: https://lupyuen.github.io/articles/lcd?7#render-lcd-display

We initialise the Sitronix ST7703 LCD Controller inside #PinePhone ... By sending 20 MIPI DSI Commands

Article: https://lupyuen.github.io/articles/lcd?6#initialise-lcd-controller

To power on #PinePhone's LCD Panel, we talk to the Power Mgmt IC

Article: https://lupyuen.github.io/articles/lcd?5#power-on-lcd-panel

Here's how we Reset #PinePhone's LCD Panel

Article: https://lupyuen.github.io/articles/lcd?4#reset-lcd-panel

We turn on #PinePhone's LCD Backlight ... With PWM and PIO

Article: https://lupyuen.github.io/articles/lcd?3#lcd-panel-backlight

Inside #PinePhone is the Xingbangda XBD599 LCD Panel ... Connected over MIPI Display Serial Interface

Article: https://lupyuen.github.io/articles/lcd?2#xingbangda-xbd599-lcd-panel

Apache #NuttX RTOS now boots on #PinePhone and renders a Test Pattern! What's inside our NuttX Driver for PinePhone's LCD Panel? All shall be explained in this article

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

Apache #NuttX Kernel now supports Allwinner A64's Reduced Serial Bus ... Which controls #PinePhone's Power Mgmt IC

Source: https://github.com/apache/nuttx/pull/7962