Lup Yuen Lee 李立源 @lupyuen@qoto.org

Some parts of the #NuttX Driver for #PinePhone's Display were tested on QEMU Arm64 ... Super convenient! 👍

https://github.com/lupyuen/pinephone-nuttx#test-pinephone-mipi-dsi-driver-with-qemu

#ZigLang composes a MIPI DSI Short Packet ... In our #PinePhone Display Driver for Apache #NuttX RTOS

https://github.com/lupyuen/pinephone-nuttx#compose-mipi-dsi-short-packet-in-zig

#PinePhone also sends MIPI DSI Short Packets to its LCD Controller ... Let's do this with #ZigLang on Apache #NuttX RTOS

https://lupyuen.github.io/articles/dsi#appendix-short-packet-for-mipi-dsi

Windows: "Let's finish setting up your device"

#ZigLang computes the Error Correction Code for a MIPI DSI Packet ... In our #PinePhone Display Driver for Apache #NuttX RTOS

https://github.com/lupyuen/pinephone-nuttx#compute-error-correction-code-in-zig

Inside a MIPI DSI Long Packet: 1️⃣ 4-byte Header 2️⃣ Payload 3️⃣ 2-byte Footer (CRC)

https://github.com/lupyuen/pinephone-nuttx#compose-mipi-dsi-long-packet-in-zig

#ZigLang composes a MIPI DSI Long Packet ... For #PinePhone's Display Driver on Apache #NuttX RTOS

https://github.com/lupyuen/pinephone-nuttx#compose-mipi-dsi-long-packet-in-zig

#ZigLang Driver for #PinePhone MIPI Display Serial Interface ... Now building a Quick Prototype on Apache #NuttX RTOS

https://github.com/lupyuen/pinephone-nuttx#zig-driver-for-pinephone-mipi-dsi

Walked 3 km at the Airport 👍

Morning Walk at the Airport ... Driest place in Singapore right now 🌧️

https://en.m.wikipedia.org/wiki/Jewel_Changi_Airport

Hello again ST7789 on PineCone #BL602 ... Time to test SPI DMA on Apache #NuttX RTOS! 👍

https://github.com/apache/incubator-nuttx/pull/7229

#ZigLang runs OK on #PinePhone ... With Apache #NuttX RTOS! 🎉

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

For details on MIPI Display Serial Interface, check out the BL808 Reference Manual

https://lupyuen.github.io/articles/dsi?18#notes

Experimenting with #PinePhone Display ... On Apache #NuttX RTOS 🤔

https://gist.github.com/lupyuen/ee3adf76e76881609845d0ab0f768a95

MIPI DPHY is the Physical Layer for #PinePhone's MIPI DSI Display ... Doesn't seem to be documented in Allwinner A64 🤔

https://lupyuen.github.io/articles/dsi?18#appendix-mipi-dphy

Apache #NuttX Display Driver for #PinePhone ... Here's how we'll create the driver

https://lupyuen.github.io/articles/dsi?17#nuttx-display-driver-for-pinephone

#PinePhone p-boot has helpful code for Allwinner A64's Display Engine and Timing Controller

https://lupyuen.github.io/articles/dsi?16#render-display

Rendering on #PinePhone's MIPI DSI Display gets complicated ... We need Allwinner A64's Display Engine and Timing Controller

https://lupyuen.github.io/articles/dsi?16#render-display

How #PinePhone transmits Long Packets over the MIPI Display Serial Interface

https://lupyuen.github.io/articles/dsi?15#transmit-packet-over-mipi-dsi

#PinePhone sends Long Packets to the MIPI Display Serial Interface ... To init the ST7703 LCD Controller

https://lupyuen.github.io/articles/dsi?12#long-packet-for-mipi-dsi