Lup Yuen Lee 李立源 @lupyuen@social.cleverlibre.org
- Pronouns/Gender/Sexuality
- He/Him/They, Bisexual/Asexual 🇸🇬
- Date of Birth
- 1969
- Articles
- https://lupyuen.codeberg.page
IoT Techie and Educator / Apache NuttX PMC
Joined Jan 2020
Let's talk about #RISCV PLIC: Platform-Level Interrupt Controller ... For #Star64 JH7110 SBC
Source: https://github.com/lupyuen/nuttx-star64#platform-level-interrupt-controller-for-star64
The “Promise” of “Easier” Programming (LabVIEW)
Lup Yuen Lee 李立源
boosted
@gemlog @lupyuen Nice, thanks! Was testing myself some time ago, by walking around, but did not gps track myself, was more "to get a feeling" for how far I could get. In between houses it was quite disappointing, but in an open field I stopped walking after a km. What software are you using for tracking, I still have my diy bi quad laying around and could try an directional test.
My hw ist ESP32Lora: https://github.com/Vault2501/Meshed-Banana-Device/wiki
Lup Yuen Lee 李立源
boosted
FINALLY!
We just *fully* booted into #Linux on the #VisionFive2 #RISCV board using #oreboot as #firmware and a u-root rootfs. 🧑💻
This took quite a while again and I had needed some breaks here and there. Go 1.21RC2 has the necessary alignment checks for this to work without too much performance penalty otherwise caused if Linux or (even worse!) oreboot handled this.
In other news, this is a vast improvement to what OpenSBI offers. Less hacks, a cleaner architecture, and IT WORKS! 🥳
Let's install a TFTP Server for Network Boot ... Thanks to #RustLang
Article: https://lupyuen.codeberg.page/articles/tftp.html#install-tftp-server
#NuttX Shell runs OK on #Star64 JH7110 #RISCV SBC! 🎉 ... But 16550 UART Controller fires too many Spurious Interrupts ... Each Dot = 1 Million Interrupts! 😲
Source: https://github.com/lupyuen/nuttx-star64#nuttx-star64-handles-uart-interrupts
Dengue is breaking records in the Americas
Soluboard water-soluble PCB: "the glass fiber and epoxy resin of traditional PCBs are replaced with a natural fiber and a polymer that dissolves in hot water"
https://www.theregister.com/2023/07/28/infineon_recyclable_circuit/
How we'll boot Apache #NuttX RTOS (or Linux) over TFTP ... On #Star64 JH7110 #RISCV SBC
Article: https://lupyuen.codeberg.page/articles/tftp.html#boot-from-network
#StarFive JH7110 has 5 Harts (#RISCV Cores) ... Linux will boot on Hart 1 (not Hart 0)
Article: https://lupyuen.codeberg.page/articles/nuttx2.html#appendix-hart-id-from-opensbi
Scheduled Sessions for ApacheCon Asia 2023 (Aug 18 to 20)
How UART I/O works in Apache #NuttX RTOS
Source: https://github.com/lupyuen/nuttx-star64#uart-output-in-nuttx-qemu
"By pressing a Button on the remote, you set off a spring-loaded hammer that strikes a solid aluminum rod in the device, which then rings out at an Ultrasonic frequency"
https://www.theverge.com/23810061/zenith-space-command-remote-control-button-of-the-month
Interactive Primer on Bézier Curves
"Worldcoin doesn't seem to know what problem it's trying to solve, but they want to scan your Eyeballs anyway"
https://newsletter.mollywhite.net/p/worldcoin-a-solution-in-search-of
Apple Pencils can’t draw straight on third-party replacement iPad screens
- Pronouns/Gender/Sexuality
- He/Him/They, Bisexual/Asexual 🇸🇬
- Date of Birth
- 1969
- Articles
- https://lupyuen.codeberg.page
IoT Techie and Educator / Apache NuttX PMC
Joined Jan 2020
