Lup Yuen Lee 李立源 @lupyuen@qoto.org
- Pronouns/Gender/Sexuality
- He/Him/They, Bisexual/Asexual 🇸🇬
- Date of Birth
- 1969
- Articles
- https://lupyuen.org
IoT Techie and Educator / Apache NuttX PMC
Joined Jan 2020
How does #PinePhone @PINE64 control its LCD Display? Let's uncover all the secrets about PinePhone's mysterious LCD Display and its MIPI Display Serial Interface...
Lup Yuen Lee 李立源
boosted
I use STM32F405/F446 for audio processing in modular synthesizer products.
To get there, variance of 3-4 microseconds on the 20.8microsecond target is audible, and had to be clever to solve that.
The software doesn't do buffering (well, technically 1 sample).
https://github.com/awesomeaudioapparatus/demiurge/
The software/ is a bit gnarly to navigate, since several hardwares are to be supported (just gave up on CH32V307 Risc-V mcu), but the base audio processing is in components/demiurge
Lup Yuen Lee 李立源
boosted
@lupyuen Interesting. In something like audio, you need sub 1ms timing. I don't think there's any Linux that will do this. I actually wonder if RISCOS would be good for real-time systems.
My big dream is to have some kind of RP2040/Pi combo, so one can have fast and proper real-time where necessary.
#ZigLang runs OK on #PinePhone ... With Apache #NuttX RTOS! 🎉
Real-Time programming with #Linux
https://shuhaowu.com/blog/2022/01-linux-rt-appdev-part1.html
"Chinese smartphone maker #Xiaomi Corp ... said it was "disappointed" with an Indian order that froze US$ 682 million of its assets and would continue to protect its interests"
NFT sales plunge in Q3, down by 60% from Q2
https://finance.yahoo.com/news/nft-sales-plunge-q3-down-083419438.html
#PinePhone Keyboard Driver prepped ahead of #Linux 6.1
Experimenting with #PinePhone Display ... On Apache #NuttX RTOS 🤔
https://gist.github.com/lupyuen/ee3adf76e76881609845d0ab0f768a95
Bruce Willis denies selling rights to his face
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
"Indonesia police say 129 people killed after stampede at football match"
https://www.channelnewsasia.com/sport/indonesia-football-match-riot-stampede-deaths-stadium-disaster-2980276
"Millions of Chinese are in limbo as cash-strapped developers halt construction"
#PinePhone p-boot has helpful code for Allwinner A64's Display Engine and Timing Controller
"Same-sex couples from China are getting married in Utah over Zoom"
https://restofworld.org/2022/chinese-same-sex-couples-married-zoom-utah/
Rendering on #PinePhone's MIPI DSI Display gets complicated ... We need Allwinner A64's Display Engine and Timing Controller
- Pronouns/Gender/Sexuality
- He/Him/They, Bisexual/Asexual 🇸🇬
- Date of Birth
- 1969
- Articles
- https://lupyuen.org
IoT Techie and Educator / Apache NuttX PMC
Joined Jan 2020
