Lup Yuen Lee 李立源 @lupyuen@qoto.org

#RISCV T-Head C906 Errata in Linux Kernel ... Says that we need Strong Ordering for I/O Memory in #Ox64 BL808 SBC

Article: https://lupyuen.codeberg.page/articles/plic3.html#t-head-errata

@pancake That's very cool! We can follow these steps to build and run NuttX on QEMU RISC-V 64-bit:

https://lupyuen.github.io/articles/riscv

Then add our code to the `hello` app:

apps/examples/hello/hello_main.c

Note that the Hello App needs to be enabled (change "M" to "*"):

https://github.com/lupyuen/lupyuen.github.io/issues/21#issuecomment-1809337352

Generally, any code that targets Linux Command-Line, will probably compile on NuttX without changes.

If NuttX fails to build something because of missing headers (e.g. GTK), then it's probably not supported by NuttX :-)

Barebones TCC #RISCV Compiler in #WebAssembly 🎉

Source: https://lupyuen.github.io/tcc-riscv32-wasm/

#Ox64 BL808 UART Controller has Leaky Reads and Writes ... But there's a simple fix!

Article: https://lupyuen.codeberg.page/articles/plic3.html#leaky-reads-in-uart

TCC #RISCV Compiler, compiled to #WebAssembly by #ZigLang Compiler ... Generates correct ELF Code! 🎉

Source: https://github.com/lupyuen/tcc-riscv32-wasm#tcc-webassembly-runs-ok-in-a-web-browser

Running TCC #RISCV Compiler inside the Web Browser ... Thanks to #ZigLang Compiler 👍

Source: https://github.com/lupyuen/tcc-riscv32-wasm#test-the-tcc-webassembly-in-a-web-browser

Strange problems in #Ox64 BL808 UART and Interrupt Controller ... Let's investigate the alligator in the vest

Article: https://lupyuen.codeberg.page/articles/plic3.html#uart-and-plic-troubles

foundation-libc: libc in #ZigLang for Freestanding targets

https://github.com/ZigEmbeddedGroup/foundation-libc

TCC: The simple C Compiler for #RISCV ... Can we compile TCC to #WebAssembly with #ZigLang Compiler? 🤔

Source: https://github.com/lupyuen/tcc-riscv32-wasm

"#Apple said it would not charge a commission to developers of apps who avoided the App Store, but it would levy a Core Technology Fee of €0.50 for each App Installation"

https://www.theguardian.com/technology/2024/jan/25/apple-to-allow-eu-customers-to-download-apps-without-using-app-store

"#RustLang Community suffers from a collective Stockholm Syndrome when it comes to Compile Times. They are bad"

https://thenewstack.io/where-does-the-time-go-rusts-problem-with-slow-compiles/

"expect" script works OK for testing our #Ox64 BL808 Emulator 🎉

Source: https://github.com/lupyuen/nuttx-tinyemu

Here's how we handle a UART Interrupt on #Ox64 BL808 #RISCV SBC

Article: https://lupyuen.codeberg.page/articles/plic3.html#uart-interrupt

Butter Chicken: "two Indian restaurant chains doing battle in court over claims to its origins"

https://www.channelnewsasia.com/asia/butter-chicken-who-invented-india-dispute-judge-rule-4070506

"This second stage Malicious Script read the Private SSH Key stored in the id_rsa file located in the homedir/.ssh directory. It then uploaded the Base64 encoded key to an attacker-controlled GitHub repository"

https://www.reversinglabs.com/blog/gitgot-cybercriminals-using-github-to-store-stolen-data

Bus Pirate 5: Color LCD, 100 MB Flash with RP2040 ($38)

https://www.hackster.io/news/dangerous-prototypes-unveils-the-next-generation-bus-pirate-5-now-powered-by-a-raspberry-pi-rp2040-e253c0322bbd

Kconfig in #Zephyr OS

https://interrupt.memfault.com/blog/practical_zephyr_kconfig

Comparing ADCs on #ESP32, #RP2040 and Arduino Uno

http://www.doctormonk.com/2024/01/comparingadcs.html

@jrsharp Cool! Lemme know if you have any questions :-)