Hacker News Reader

lupyuenon Fixing a uname bug (Apache NuttX RTOS)

Thanks for the tip! I fixed the CSS, it should look better on desktop now :-)

lupyuenon Fixing a uname bug (Apache NuttX RTOS)

Thank you so much! :-)

lupyuenon Continuous Integration Dashboard for Apache NuttX RTOS (Prometheus and Grafana)

Thank you so much! :-)

lupyuenon Nim on a Real-Time Operating System: Apache NuttX RTOS and Ox64 BL808 SBC

Thanks for the tip! I'll check with the folks who added Nim support to NuttX, and figure out whether we should call GC_runOrc()

lupyuenon Nim on a Real-Time Operating System: Apache NuttX RTOS and Ox64 BL808 SBC

Thank you so much! 2024 will be an awesome year for 64-bit RISC-V Gadgets (like Ox64), I'll write lots more :-)

lupyuenon Nim on a Real-Time Operating System: Apache NuttX RTOS and Ox64 BL808 SBC

Thanks! Yep we should do more Nim programming on microcontrollers, since they have lots more RAM nowadays.

lupyuenon Fixed the UART Interrupt and Platform-Level Interrupt Controller (Ox64 BL808)

This is very helpful, thank you so much!

lupyuenon UART Interrupt and Platform-Level Interrupt Controller

Thank you for reading :-)

lupyuenon UART Interrupt and Platform-Level Interrupt Controller

Thanks! I'm still having problems with UART Interrupts and PLIC. Hopefully I can rethink what I wrote, and figure out the solution :-)

lupyuenon UART Interrupt and Platform-Level Interrupt Controller

Thank you so much! And thanks for reading :-)

lupyuenon RISC-V Ox64 BL808 SBC: Starting Apache NuttX Real-Time Operating System

Bouffalo Lab seems to be rolling out a new SDK that supports BL602 and BL808: BouffaloSDK https://github.com/bouffalolab/bouffalo_sdk

Ox64 won't work with MIPI DSI Displays, because it runs on BL808C (instead of BL808D). Too bad I will be stuck with tiny screens for a while.

lupyuenon RISC-V Ox64 BL808 SBC: Starting Apache NuttX Real-Time Operating System

Yep I agree, programming the 64-bit and 32-bit RISC-V Cores in BL808 SoC can be really challenging! I hope to run NuttX RTOS on both cores, talking over OpenAMP.

lupyuenon Star64 JH7110 RISC-V SBC: Experiments with OpenSBI (Supervisor Binary Interface)

Thanks! The JH7110 Display Controller is super complex, it might take a while to get it working with NuttX. Right now I'm building the I2C Driver for JH7110, which is needed to power up the PMIC for HDMI Output:

https://github.com/lupyuen/nuttx-star64#power-up-the-i2c-con...

lupyuenon Star64 JH7110 and NuttX RTOS: RISC-V PLIC Interrupts and Serial I/O

Update: We fixed the Spurious UART Interrupts by waiting for UART to be not busy before setting the Line Control Register: https://github.com/lupyuen2/wip-pinephone-nuttx/pull/36/file...

I'm sorry that Codeberg is having problems, here's the backup link for the article: https://lupyuen.github.io/articles/plic

lupyuenon Star64 JH7110 and NuttX RTOS: RISC-V PLIC Interrupts and Serial I/O

Thank you so much! I'll check it out.

lupyuenon Star64 JH7110 and NuttX RTOS: RISC-V Semihosting and Initial RAM Disk

Yep indeed! The internals of these boards (and PineTab-V) are quite similar. Hopefully my work will show that it's not that hard to roll out our own OS on JH7110 boards.

lupyuenon 64-Bit RISC-V with Apache NuttX Real-Time Operating System

Thanks! I'll take note of this while I'm working on NuttX and RISC-V.

lupyuenon NuttX RTOS for PinePhone: Feature Phone UI in LVGL, Zig and WebAssembly

Yep since I'm already coding with LVGL on PinePhone, I just had to find out whether LVGL works with Zig and WebAssembly. It was a fun and educational experience, I hope LVGL coding will be just as fun someday :-)

lupyuenon NuttX RTOS for PinePhone: Framebuffer

Thank you so much! :-)

lupyuenon NuttX RTOS for PinePhone: Display Engine

Thank you so much for reading my articles :-)

lupyuenon NuttX RTOS for PinePhone: Display Engine

Thank you so much! I'll write more about PinePhone and NuttX :-)

lupyuenon NuttX RTOS for PinePhone: Display Engine

I haven't used Zephyr much, but I think NuttX is a smaller, simpler OS than Zephyr? NuttX feels like a great way to learn about the internals of smartphone operating systems.

lupyuenon Debug Rust on PineCone BL602 with VSCode and GDB

Here's how we build and debug Embedded Rust Firmware for PineCone BL602... With VSCode and GDB

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

lupyuenon Connect PineCone BL602 to OpenOCD

Here's how we connect PineCone BL602 Evaluation Board to OpenOCD... For flashing and debugging RISC-V firmware

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

lupyuenon Quick Peek of PineCone BL602 RISC-V Evaluation Board

What's inside the PineCone BL602 Evaluation Board... And how we're using it to contribute to the RISC-V Open Source Ecosystem

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

lupyuenon Create Your Own PineTime Watch Face in Rust and Publish on Crates.io

Publish your Watch Face in Rust on crates.io... For all PineTime Smart Watch Owners to Discover, Install and Enjoy! Here's how...

https://lupyuen.github.io/pinetime-rust-mynewt/articles/watc...

lupyuenon Bluetooth Time Sync and LVGL on PineTime Mynewt

How does PineTime Smart Watch sync the time with your mobile phone? Lemme explain how Bluetooth LE Time Sync works with Mynewt and NimBLE... And how we create PineTime Watch Faces with LVGL

https://lupyuen.github.io/pinetime-rust-mynewt/articles/time...

lupyuenon Telegram Bot to flash and test PineTime Smart Watch firmware remotely

I have set up a PineTime Smart Watch for flashing firmware and testing remotely...

1. You can send flash commands to the Telegram Bot...

    /flash 0x0 https://.../firmware.bin

2. Then view the live video stream on YouTube

Hope this will encourage more people to try PineTime programming. More details here...

https://github.com/lupyuen/remote-pinetime-bot/blob/master/R...

lupyuenon Porting PineTime Watch Face from C to Rust on Riot with LVGL

Converting Embedded C to Rust is not that hard... Here's how we convert a PineTime Watch Face with LVGL from C to Rust on RIOT

https://lupyuen.github.io/pinetime-rust-riot/articles/watch_...