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<rss version="2.0">
<channel>
<title>lupyuen</title>
<link>https://lupyuen.github.io</link>
<description>IoT Techie and Educator</description>
<item>
<title>Rust Standard Library on Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/articles/rust7</link>
<description><![CDATA[Rust Standard Library is now available on Apache NuttX RTOS, thanks to awesome work by Huang Qi! In this article we explain (1) How to build NuttX + Rust Standard Library (2) Handling JSON with the Serde Crate (3) Async Functions with the Tokio Crate (4) Blinking LEDs with the Nix Crate]]></description>
<guid>https://lupyuen.github.io/articles/rust7</guid>
<pubDate>Sun, 26 Jan 2025 00:00:00 +0000</pubDate>
</item>
<item>
<title>Fixing a uname bug (Apache NuttX RTOS)</title>
<link>https://lupyuen.github.io/articles/uname</link>
<description><![CDATA[Earlier This Week: uname became unusually quieter on Apache NuttX RTOS... The Commit Hash is missing! Watch as we stomp the seemingly simple bug, that turns out to be something seriously sinister! (Spoiler: Static Vars are broken)]]></description>
<guid>https://lupyuen.github.io/articles/uname</guid>
<pubDate>Sun, 19 Jan 2025 00:00:00 +0000</pubDate>
</item>
<item>
<title>Forgejo Git Forge for Apache NuttX RTOS (Experimental)</title>
<link>https://lupyuen.github.io/articles/forgejo</link>
<description><![CDATA[Life Without GitHub: What's it like? Today we talk about Forgejo Git Forge, and whether Apache NuttX RTOS could possibly switch from GitHub to our own Git Forge.]]></description>
<guid>https://lupyuen.github.io/articles/forgejo</guid>
<pubDate>Sun, 12 Jan 2025 00:00:00 +0000</pubDate>
</item>
<item>
<title>Git Bisecting a Bug (Apache NuttX RTOS)</title>
<link>https://lupyuen.github.io/articles/bisect</link>
<description><![CDATA[Suppose we hit a Runtime Bug in Apache NuttX RTOS. We think that the Breaking Commit (causing the bug) is somewhere inside these hundreds of NuttX Commits. But which one? In this article: We run Git Bisect to discover the Breaking Commit.]]></description>
<guid>https://lupyuen.github.io/articles/bisect</guid>
<pubDate>Sun, 05 Jan 2025 00:00:00 +0000</pubDate>
</item>
<item>
<title>Mastodon Server for Continuous Integration (Apache NuttX RTOS)</title>
<link>https://lupyuen.github.io/articles/mastodon</link>
<description><![CDATA[We're out for a 50 km overnight hike. Our Build Farm for Apache NuttX RTOS runs non-stop all day, all night. Continuously compiling over 1,000 NuttX Targets. Can we be 100% sure that NuttX is OK? Without getting spammed by alert emails all night? In this article: We talk about Mastodon as a fun new way to broadcast NuttX Alerts in real time.]]></description>
<guid>https://lupyuen.github.io/articles/mastodon</guid>
<pubDate>Sun, 29 Dec 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Buy a Coffee for Lup Yuen Lee</title>
<link>https://lupyuen.github.io/articles/sponsor</link>
<description><![CDATA[Please sponsor my open-source writing and projects. Thank you so much!]]></description>
<guid>https://lupyuen.github.io/articles/sponsor</guid>
<pubDate>Sat, 28 Dec 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Failing a Continuous Integration Test for Apache NuttX RTOS (QEMU RISC-V)</title>
<link>https://lupyuen.github.io/articles/ci7</link>
<description><![CDATA[Every Day: Apache NuttX RTOS on QEMU RISC-V Emulator fails our Continuous Integration Test. The Bug Stops Here! In this article, we study the internals of a NuttX CI Test (Continuous Integration) as we fix the bug.]]></description>
<guid>https://lupyuen.github.io/articles/ci7</guid>
<pubDate>Sun, 22 Dec 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Rewinding a Build for Apache NuttX RTOS (Docker)</title>
<link>https://lupyuen.github.io/articles/ci6</link>
<description><![CDATA[When something breaks the Daily Build for Apache NuttX RTOS: Our NuttX Maintainers will scramble to identify the Breaking Commit. Not any more! Now we can go back in time and Rewind The Build.]]></description>
<guid>https://lupyuen.github.io/articles/ci6</guid>
<pubDate>Sun, 15 Dec 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>macOS Build Farm for Apache NuttX RTOS (Apple Silicon)</title>
<link>https://lupyuen.github.io/articles/ci5</link>
<description><![CDATA[Folks on macOS: Compiling Apache NuttX RTOS used to be so tiresome. Not any more! In this article, we explain how to build anything on macOS, by patching the NuttX CI Script. Which also becomes our macOS Build Farm.]]></description>
<guid>https://lupyuen.github.io/articles/ci5</guid>
<pubDate>Sun, 08 Dec 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Continuous Integration Dashboard for Apache NuttX RTOS (Prometheus and Grafana)</title>
<link>https://lupyuen.github.io/articles/ci4</link>
<description><![CDATA[Last article we spoke about the (Twice) Daily Builds for Apache NuttX RTOS. Today we talk about Monitoring the Daily Builds (also the NuttX Build Farm) with our new NuttX Dashboard.]]></description>
<guid>https://lupyuen.github.io/articles/ci4</guid>
<pubDate>Sun, 24 Nov 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Optimising the Continuous Integration for Apache NuttX RTOS (GitHub Actions)</title>
<link>https://lupyuen.github.io/articles/ci3</link>
<description><![CDATA[Within Two Weeks: We squashed our GitHub Actions spending from $4,900 (weekly) down to $890. Previously: Our developers waited 2.5 Hours for a Pull Request to be checked. Now we wait at most 1.5 Hours! This article explains everything we did in the (Semi-Chaotic) Two Weeks for Apache NuttX RTOS.]]></description>
<guid>https://lupyuen.github.io/articles/ci3</guid>
<pubDate>Sun, 10 Nov 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Your very own Build Farm for Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/articles/ci2</link>
<description><![CDATA[Refurbished Ubuntu PCs have become quite affordable. Let's turn them into a (Low-Cost) Build Farm for Apache NuttX RTOS, thanks to the Docker Image provided by NuttX.]]></description>
<guid>https://lupyuen.github.io/articles/ci2</guid>
<pubDate>Sun, 27 Oct 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>LLM Bot that reviews Pull Requests for Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/articles/llm</link>
<description><![CDATA[We’re experimenting with an LLM Bot (Large Language Model) that will review Pull Requests for Apache NuttX RTOS. This article explains how we created the Bot in One Week... By sheer accident!]]></description>
<guid>https://lupyuen.github.io/articles/llm</guid>
<pubDate>Sun, 29 Sep 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Continuous Integration for Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/articles/ci</link>
<description><![CDATA[This article explains how Apache NuttX RTOS is running Continuous Integration with GitHub Actions. Every NuttX Pull Request will trigger 1,594 NuttX Builds!]]></description>
<guid>https://lupyuen.github.io/articles/ci</guid>
<pubDate>Wed, 11 Sep 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Early Days of Rust Apps on Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/articles/rust6</link>
<description><![CDATA[My student Rushabh Gala has just completed his project for Google Summer of Code, on creating Safer Rust Apps for Apache NuttX RTOS. In this article we walk through Rushabh’s contributions, and understand how we’re evolving Rust Apps for NuttX.]]></description>
<guid>https://lupyuen.github.io/articles/rust6</guid>
<pubDate>Mon, 19 Aug 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>RISC-V Emulator for Sophgo SG2000 SoC (Pine64 Oz64 / Milk-V Duo S)</title>
<link>https://lupyuen.github.io/articles/sg2000b</link>
<description><![CDATA[Earlier this year we made a RISC-V Emulator for Ox64 BL808 SBC, thanks to our customised TinyEMU RISC-V Emulator. (Not the small flightless bird) Now that NuttX supports Sophgo SG2000 SoC: Let's create a similar emulator for Pine64 Oz64 SBC and Milk-V Duo S!]]></description>
<guid>https://lupyuen.github.io/articles/sg2000b</guid>
<pubDate>Sun, 07 Jul 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Daily Automated Testing for Milk-V Duo S RISC-V SBC (IKEA TRETAKT / Apache NuttX RTOS)</title>
<link>https://lupyuen.github.io/articles/sg2000a</link>
<description><![CDATA[Last week we upstreamed Milk-V Duo S SBC to Apache NuttX RTOS. (Based on Sophgo SG2000 RISC-V SoC) But NuttX Mainline changes every day. Will Milk-V Duo S suffer “Software Bit Rot”? And fail to boot NuttX someday? Let’s do Daily Automated Testing for NuttX on a Milk-V Duo S SBC, controlled by an IKEA Smart Power Plug with Home Assistant API.]]></description>
<guid>https://lupyuen.github.io/articles/sg2000a</guid>
<pubDate>Sun, 23 Jun 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Slides) TinyEMU RISC-V Emulator for Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/nuttx#tinyemu-risc-v-emulator-for-apache-nuttx-rtos</link>
<description><![CDATA[What if we could boot and test Apache NuttX RTOS inside a Web Browser? This presentation explains how we created a NuttX Emulator in WebAssembly, based on TinyEMU RISC-V Emulator.]]></description>
<guid>https://lupyuen.github.io/nuttx#tinyemu-risc-v-emulator-for-apache-nuttx-rtos</guid>
<pubDate>Tue, 13 Jun 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Video) TinyEMU RISC-V Emulator for Apache NuttX RTOS</title>
<link>https://youtu.be/JlEo3lfi0CU</link>
<description><![CDATA[What if we could boot and test Apache NuttX RTOS inside a Web Browser? This presentation explains how we created a NuttX Emulator in WebAssembly, based on TinyEMU RISC-V Emulator.]]></description>
<guid>https://youtu.be/JlEo3lfi0CU</guid>
<pubDate>Tue, 13 Jun 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Slides) Adventures of Ox64 BL808 RISC-V SBC with Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/nuttx#adventures-of-ox64-bl808-risc-v-sbc-with-apache-nuttx-rtos</link>
<description><![CDATA[We ported Apache NuttX RTOS to PINE64’s Ox64 BL808 64-bit Single-Board Computer. And we created an Emulator for Ox64 SBC that runs in the Web Browser, thanks to TinyEMU RISC-V Emulator. Today we run Daily Automated Testing of NuttX on the Ox64 Emulator. In this presentation we explain how we used the Ox64 Emulator in our experiments with WebAssembly and NuttX: (1) Testing the TCC RISC-V Compiler in WebAssembly (2) Porting the QuickJS JavaScript Engine to NuttX (3) Creating a Drag-n-Drop App Builder for NuttX]]></description>
<guid>https://lupyuen.github.io/nuttx#adventures-of-ox64-bl808-risc-v-sbc-with-apache-nuttx-rtos</guid>
<pubDate>Tue, 13 Jun 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Video) Adventures of Ox64 BL808 RISC-V SBC with Apache NuttX RTOS</title>
<link>https://youtu.be/Eoy-X4ouuLI</link>
<description><![CDATA[We ported Apache NuttX RTOS to PINE64’s Ox64 BL808 64-bit Single-Board Computer. And we created an Emulator for Ox64 SBC that runs in the Web Browser, thanks to TinyEMU RISC-V Emulator. Today we run Daily Automated Testing of NuttX on the Ox64 Emulator. In this presentation we explain how we used the Ox64 Emulator in our experiments with WebAssembly and NuttX: (1) Testing the TCC RISC-V Compiler in WebAssembly (2) Porting the QuickJS JavaScript Engine to NuttX (3) Creating a Drag-n-Drop App Builder for NuttX]]></description>
<guid>https://youtu.be/Eoy-X4ouuLI</guid>
<pubDate>Tue, 13 Jun 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Slides) Analysis of Real-Time Logs for Apache NuttX RTOS with PureScript</title>
<link>https://lupyuen.github.io/nuttx#analysis-of-real-time-logs-for-apache-nuttx-rtos-with-purescript</link>
<description><![CDATA[Today we can get Real-Time NuttX Logs from our RISC-V Devices: Ox64 SBC (Web Serial API) and Ox64 Emulator (Term.js). What if we could analyse the RISC-V Logs in Real-Time? And show the results in the Web Browser? Let’s do it with PureScript, the Functional Language that compiles to JavaScript. We’ll also support Online Scripting of PureScript for Log Parsing. Can we enhance the NuttX Developer Experience with Functional Programming Tools like PureScript? Or newer hardware like PINE64 Ox64 SBC and Sophgo SG2000 / Milk-V Duo S? Let’s chat about this.]]></description>
<guid>https://lupyuen.github.io/nuttx#analysis-of-real-time-logs-for-apache-nuttx-rtos-with-purescript</guid>
<pubDate>Tue, 13 Jun 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Video) Analysis of Real-Time Logs for Apache NuttX RTOS with PureScript</title>
<link>https://youtu.be/d09SNQye2tc</link>
<description><![CDATA[Today we can get Real-Time NuttX Logs from our RISC-V Devices: Ox64 SBC (Web Serial API) and Ox64 Emulator (Term.js). What if we could analyse the RISC-V Logs in Real-Time? And show the results in the Web Browser? Let’s do it with PureScript, the Functional Language that compiles to JavaScript. We’ll also support Online Scripting of PureScript for Log Parsing. Can we enhance the NuttX Developer Experience with Functional Programming Tools like PureScript? Or newer hardware like PINE64 Ox64 SBC and Sophgo SG2000 / Milk-V Duo S? Let’s chat about this.]]></description>
<guid>https://youtu.be/d09SNQye2tc</guid>
<pubDate>Tue, 13 Jun 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>Apache NuttX RTOS on Sophgo SG2000 RISC-V SoC (Milk-V Duo S / Oz64 SBC)</title>
<link>https://lupyuen.github.io/articles/sg2000</link>
<description><![CDATA[Soon we'll see many new 64-bit RISC-V SBCs based on the Sophgo SG2000 RISC-V SoC. Will they work with Apache NuttX RTOS? Let's find out!]]></description>
<guid>https://lupyuen.github.io/articles/sg2000</guid>
<pubDate>Sun, 19 May 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Rust Apps on Ox64 BL808 RISC-V SBC and Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/articles/rust5</link>
<description><![CDATA[Will Rust Apps run on a 64-bit RISC-V SBC? Like Ox64 BL808 SBC? Let's find out with Apache NuttX RTOS!]]></description>
<guid>https://lupyuen.github.io/articles/rust5</guid>
<pubDate>Sun, 05 May 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Rust Custom Target for QEMU RISC-V on Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/articles/rust4</link>
<description><![CDATA[Our Rust App compiles for Software Floating-Point, but Apache NuttX RTOS expects Hardware Floating-Point... Let's fix this with a Rust Custom Target for QEMU RISC-V]]></description>
<guid>https://lupyuen.github.io/articles/rust4</guid>
<pubDate>Sun, 21 Apr 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Rust Apps on Apache NuttX RTOS and QEMU RISC-V</title>
<link>https://lupyuen.github.io/articles/rust3</link>
<description><![CDATA[Here's how we run Rust Apps on Apache NuttX RTOS and QEMU RISC-V Emulator.]]></description>
<guid>https://lupyuen.github.io/articles/rust3</guid>
<pubDate>Sun, 07 Apr 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Too many Embedded Logs? PureScript might help (Ox64 BL808 SBC / Apache NuttX RTOS)</title>
<link>https://lupyuen.github.io/articles/purescript</link>
<description><![CDATA[Troubleshooting Crash Dumps for Apache NuttX RTOS will become a little less painful... Thanks to our new NuttX Log Parser! This is how we created with PureScript, a Real-Time Parser and Explainer for RISC-V Exceptions and Stack Dumps.]]></description>
<guid>https://lupyuen.github.io/articles/purescript</guid>
<pubDate>Sun, 03 Mar 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Homage to MakeCode) Coding Ox64 BL808 SBC the Drag-n-Drop Way</title>
<link>https://lupyuen.github.io/articles/quickjs2</link>
<description><![CDATA[Remember Makecode? BBC micro:bit and its Drag-n-Drop App Builder? Let's give MakeCode a wholesome wholesale makeover... With Blockly, QuickJS JavaScript Engine, Apache NuttX RTOS and Ox64 BL808 64-bit RISC-V SBC]]></description>
<guid>https://lupyuen.github.io/articles/quickjs2</guid>
<pubDate>Sun, 25 Feb 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>QuickJS JavaScript Engine on a Real-Time Operating System (Apache NuttX RTOS)</title>
<link>https://lupyuen.github.io/articles/quickjs</link>
<description><![CDATA[Can we run QuickJS JavaScript Engine on Apache NuttX RTOS? And Blink the LED on Ox64 BL808 RISC-V SBC... In 4 lines of JavaScript? Let’s do it!]]></description>
<guid>https://lupyuen.github.io/articles/quickjs</guid>
<pubDate>Sun, 18 Feb 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Zig runs ROM FS Filesystem in the Web Browser (thanks to Apache NuttX RTOS)</title>
<link>https://lupyuen.github.io/articles/romfs</link>
<description><![CDATA[We solve a hefty headache in our port of TCC Compiler to WebAssembly: Missing C Header Files... Thanks to the ROM FS Filesystem and the ROM FS Driver from Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/romfs</guid>
<pubDate>Sun, 11 Feb 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>TCC RISC-V Compiler runs in the Web Browser (thanks to Zig Compiler)</title>
<link>https://lupyuen.github.io/articles/tcc</link>
<description><![CDATA[Today we're running Apache NuttX RTOS inside a Web Browser. What if we could compile and test NuttX Apps in the Web Browser? Let's explore with TCC 64-bit RISC-V Compiler, compiled to WebAssembly with Zig Compiler.]]></description>
<guid>https://lupyuen.github.io/articles/tcc</guid>
<pubDate>Sun, 04 Feb 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Automated Testing with Ox64 BL808 Emulator (Apache NuttX RTOS)</title>
<link>https://lupyuen.github.io/articles/tinyemu3</link>
<description><![CDATA[Every day we're auto-building Apache NuttX RTOS for Ox64 BL808 SBC... Can we test NuttX on Ox64 Emulator automatically after building? Let's find out!]]></description>
<guid>https://lupyuen.github.io/articles/tinyemu3</guid>
<pubDate>Sun, 28 Jan 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Emulate Ox64 BL808 in the Web Browser: Experiments with TinyEMU RISC-V Emulator and Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/articles/tinyemu2</link>
<description><![CDATA[Let's create a barebones Ox64 BL808 Emulator that runs in the Web Browser... By tweaking TinyEMU RISC-V Emulator and booting Apache NuttX RTOS without any modification]]></description>
<guid>https://lupyuen.github.io/articles/tinyemu2</guid>
<pubDate>Sun, 21 Jan 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Apache NuttX RTOS in a Web Browser? Adventures with TinyEMU and VirtIO</title>
<link>https://lupyuen.github.io/articles/tinyemu</link>
<description><![CDATA[Here's how we boot and run Apache NuttX RTOS in the Web Browser... Thanks to TinyEMU RISC-V Emulator, VirtIO Virtual Devices and OpenAMP Library]]></description>
<guid>https://lupyuen.github.io/articles/tinyemu</guid>
<pubDate>Sun, 14 Jan 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>Nim on a Real-Time Operating System: Apache NuttX RTOS + Ox64 BL808 SBC</title>
<link>https://lupyuen.github.io/articles/nim</link>
<description><![CDATA[Let's blink an LED on Pine64 Ox64 BL808 64-bit RISC-V Single-Board Computer... With Nim Programming Language and Apache NuttX Real-Time Operating System]]></description>
<guid>https://lupyuen.github.io/articles/nim</guid>
<pubDate>Mon, 01 Jan 2024 00:00:00 +0000</pubDate>
</item>
<item>
<title>$8 RISC-V SBC on a Real-Time Operating System: Ox64 + NuttX</title>
<link>https://www.hackster.io/lupyuen/8-risc-v-sbc-on-a-real-time-operating-system-ox64-nuttx-474358</link>
<description><![CDATA[Bare Metal Experiments with Apache NuttX RTOS (Real-Time Operating System) on the affordable Pine64 Ox64 BL808 64-bit RISC-V SBC]]></description>
<guid>https://www.hackster.io/lupyuen/8-risc-v-sbc-on-a-real-time-operating-system-ox64-nuttx-474358</guid>
<pubDate>Sun, 17 Dec 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>Fixed the UART Interrupt and Platform-Level Interrupt Controller (Ox64 BL808)</title>
<link>https://lupyuen.github.io/articles/plic3</link>
<description><![CDATA[Weak Ordering in the Ox64 BL808 Memory Management Unit (T-Head C906)... Causes problems with UART Interrupts and the Platform-Level Interrupt Controller]]></description>
<guid>https://lupyuen.github.io/articles/plic3</guid>
<pubDate>Sun, 10 Dec 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>RISC-V Ox64 BL808 SBC: UART Interrupt and Platform-Level Interrupt Controller (PLIC)</title>
<link>https://lupyuen.github.io/articles/plic2</link>
<description><![CDATA[We dive into the Platform-Level Interrupt Controller (PLIC) for the tiny adorable Pine64 Ox64 BL808 64-bit Single-Board Computer... Using Apache NuttX Real-Time Operating System to explain the inner workings of PLIC]]></description>
<guid>https://lupyuen.github.io/articles/plic2</guid>
<pubDate>Sun, 03 Dec 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>RISC-V Ox64 BL808 SBC: NuttX Apps and Initial RAM Disk</title>
<link>https://lupyuen.github.io/articles/app</link>
<description><![CDATA[(1) What's inside an Application for Apache NuttX RTOS (2) How it calls the NuttX Kernel (3) How NuttX Apps are bundled into the Initial RAM Disk for Pine64 Ox64 BL808 RISC-V SBC]]></description>
<guid>https://lupyuen.github.io/articles/app</guid>
<pubDate>Sun, 26 Nov 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>RISC-V Ox64 BL808 SBC: Sv39 Memory Management Unit</title>
<link>https://lupyuen.github.io/articles/mmu</link>
<description><![CDATA[Let's boot Apache NuttX RTOS on Pine64 Ox64 64-bit RISC-V SBC... And figure out how the Sv39 Memory Management Unit works]]></description>
<guid>https://lupyuen.github.io/articles/mmu</guid>
<pubDate>Sun, 19 Nov 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>RISC-V Ox64 BL808 SBC: Starting Apache NuttX Real-Time Operating System</title>
<link>https://lupyuen.github.io/articles/ox2</link>
<description><![CDATA[Let's boot a tiny bit of Apache NuttX Real-Time Operating System... On Pine64 Ox64 BL808 RISC-V SBC]]></description>
<guid>https://lupyuen.github.io/articles/ox2</guid>
<pubDate>Sun, 12 Nov 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>Ox64 BL808 RISC-V SBC: Booting Linux and (maybe) Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/articles/ox64</link>
<description><![CDATA[Let's boot Linux on Pine64 Ox64 BL808 RISC-V SBC... As we figure out how Apache NuttX RTOS might run on Ox64]]></description>
<guid>https://lupyuen.github.io/articles/ox64</guid>
<pubDate>Sun, 05 Nov 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>Star64 JH7110 RISC-V SBC: Experiments with OpenSBI (Supervisor Binary Interface)</title>
<link>https://lupyuen.github.io/articles/sbi</link>
<description><![CDATA[Let's boot Apache NuttX RTOS on the Star64 JH7110 RISC-V SBC (VisionFive5 too)... And experiment with the OpenSBI Supervisor Binary Interface]]></description>
<guid>https://lupyuen.github.io/articles/sbi</guid>
<pubDate>Sun, 29 Oct 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>Strange Workaround for TFTP Timeout in U-Boot Bootloader (Star64 JH7110 RISC-V SBC)</title>
<link>https://lupyuen.github.io/articles/tftp2</link>
<description><![CDATA[Here's how we fixed TFTP Timeouts in the Star64 JH7110 U-Boot Bootloader... By sending every TFTP Data Packet twice]]></description>
<guid>https://lupyuen.github.io/articles/tftp2</guid>
<pubDate>Fri, 06 Oct 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Slides) Apache NuttX RTOS for PINE64 PinePhone</title>
<link>https://docs.google.com/presentation/d/15qIBW4hoCwGCX5KGwjjV2Zo_G1M4At64UqztYBf8j08/edit?usp=sharing</link>
<description><![CDATA[Smartphones are incredibly complex gadgets. What if we could learn the internals of smartphones... By booting Apache NuttX RTOS on our phone? Over the past year, we have ported NuttX to PINE64 PinePhone as an Educational Experiment. Today we can run NuttX Touchscreen Apps on PinePhone, based on Allwinner A64 SoC with Arm64 CPUs. NuttX on PinePhone will soon support Phone Calls and Text Messages on the 4G LTE Network. We hope NuttX will become a valuable tool for teaching the inner workings of modern smartphones.]]></description>
<guid>https://docs.google.com/presentation/d/15qIBW4hoCwGCX5KGwjjV2Zo_G1M4At64UqztYBf8j08/edit?usp=sharing</guid>
<pubDate>Fri, 29 Sep 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Video) Apache NuttX RTOS for PINE64 PinePhone</title>
<link>https://youtu.be/Eiact17m_g8?si=RuBjdPGJdfZ4tGie</link>
<description><![CDATA[Smartphones are incredibly complex gadgets. What if we could learn the internals of smartphones... By booting Apache NuttX RTOS on our phone? Over the past year, we have ported NuttX to PINE64 PinePhone as an Educational Experiment. Today we can run NuttX Touchscreen Apps on PinePhone, based on Allwinner A64 SoC with Arm64 CPUs. NuttX on PinePhone will soon support Phone Calls and Text Messages on the 4G LTE Network. We hope NuttX will become a valuable tool for teaching the inner workings of modern smartphones.]]></description>
<guid>https://youtu.be/Eiact17m_g8?si=RuBjdPGJdfZ4tGie</guid>
<pubDate>Fri, 29 Sep 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Slides) PinePhone Touchscreen on NuttX: Handling MIPI DSI, Display Engine and I2C Touch Input</title>
<link>https://docs.google.com/presentation/d/1FXHqfzEKwaI9ufcZ8x8rJwCfso2N9XoZeDtERRhqeNs/edit?usp=sharing</link>
<description><![CDATA[This presentation explains how we built the NuttX Drivers to support Touchscreen Apps on PINE64 PinePhone: (1) MIPI DSI on Allwinner A64 SoC (2) Allwinner Display Engine (3) Goodix I2C Touch Panel (4) Integration with LVGL Graphics Library. To derisk the development, we prototyped the NuttX Drivers in the Zig Programming Language, before rewriting to C.]]></description>
<guid>https://docs.google.com/presentation/d/1FXHqfzEKwaI9ufcZ8x8rJwCfso2N9XoZeDtERRhqeNs/edit?usp=sharing</guid>
<pubDate>Fri, 29 Sep 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Video) PinePhone Touchscreen on NuttX: Handling MIPI DSI, Display Engine and I2C Touch Input</title>
<link>https://youtu.be/xpBzokOyvM0?si=MxnxyZK2t7vcLP3V</link>
<description><![CDATA[This presentation explains how we built the NuttX Drivers to support Touchscreen Apps on PINE64 PinePhone: (1) MIPI DSI on Allwinner A64 SoC (2) Allwinner Display Engine (3) Goodix I2C Touch Panel (4) Integration with LVGL Graphics Library. To derisk the development, we prototyped the NuttX Drivers in the Zig Programming Language, before rewriting to C.]]></description>
<guid>https://youtu.be/xpBzokOyvM0?si=MxnxyZK2t7vcLP3V</guid>
<pubDate>Fri, 29 Sep 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Slides) LVGL in WebAssembly: Building NuttX Touchscreen Apps with Zig and testing them in the Web Browser</title>
<link>https://docs.google.com/presentation/d/1aXM5JeuoXdGCkumZQL0Oe7ROBkVTgXhGZD7JfIzQGUI/edit?usp=sharing</link>
<description><![CDATA[What if we could prototype and test Touchscreen Apps in the Web Browser, before running on a real device? In this presentation we explain how we compiled the LVGL Graphics Library to WebAssembly with Zig Compiler. We created a NuttX App in the Zig Programming Language that runs in the Web Browser, calling the LVGL Library in WebAssembly. We hope that this will someday enable NuttX Apps to be created and tested easily in the Web Browser.]]></description>
<guid>https://docs.google.com/presentation/d/1aXM5JeuoXdGCkumZQL0Oe7ROBkVTgXhGZD7JfIzQGUI/edit?usp=sharing</guid>
<pubDate>Fri, 29 Sep 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Video) LVGL in WebAssembly: Building NuttX Touchscreen Apps with Zig and testing them in the Web Browser</title>
<link>https://youtu.be/8gnD8pW7Bw8?si=cYf_7MYykx8AUTlf</link>
<description><![CDATA[What if we could prototype and test Touchscreen Apps in the Web Browser, before running on a real device? In this presentation we explain how we compiled the LVGL Graphics Library to WebAssembly with Zig Compiler. We created a NuttX App in the Zig Programming Language that runs in the Web Browser, calling the LVGL Library in WebAssembly. We hope that this will someday enable NuttX Apps to be created and tested easily in the Web Browser.]]></description>
<guid>https://youtu.be/8gnD8pW7Bw8?si=cYf_7MYykx8AUTlf</guid>
<pubDate>Fri, 29 Sep 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>RISC-V Star64 JH7110: Power Up the Display Controller with U-Boot Bootloader</title>
<link>https://lupyuen.github.io/articles/display3</link>
<description><![CDATA[Let's power up the DC8200 Display Controller inside Star64 JH7110 RISC-V Single-Board Computer... By running simple commands in the U-Boot Bootloader]]></description>
<guid>https://lupyuen.github.io/articles/display3</guid>
<pubDate>Sat, 02 Sep 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>RISC-V Star64 JH7110: Inside the Display Controller</title>
<link>https://lupyuen.github.io/articles/display2</link>
<description><![CDATA[Let's take a walk inside the Display Controller for Pine64's Star64 JH7110 RISC-V SBC... And find out how we'll create the Display Driver for Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/display2</guid>
<pubDate>Wed, 23 Aug 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Slides) What's inside a Smartphone? Exploring the internals with Apache NuttX Real-Time Operating System</title>
<link>https://docs.google.com/presentation/d/1xB0uzIUlzbd5-Lkh9QGaJe5ZPlbgXTTDvDV5EWn3G0E/edit?usp=sharing</link>
<description><![CDATA[Smartphones are incredibly complex gadgets. What if we could learn the internals of smartphones... By booting Apache NuttX RTOS (Real-Time Operating System) on our phone? Over the past year, we have written a series of 24 articles explaining the inner workings of PINE64 PinePhone, and how we implemented the smartphone features with Apache NuttX RTOS. The articles cover the essential (and esoteric) topics on smartphone technology: MIPI DSI LCD Display, I2C Touch Panel, USB Controller, LTE Modem, Accelerometer / Gyroscope, Arm64 Interrupts and many more. We are also experimenting with newer, easier ways to create Smartphone Apps, with LVGL Graphics Library, Zig Programming Language, WebAssembly Simulation and Arm64 Emulation.]]></description>
<guid>https://docs.google.com/presentation/d/1xB0uzIUlzbd5-Lkh9QGaJe5ZPlbgXTTDvDV5EWn3G0E/edit?usp=sharing</guid>
<pubDate>Sat, 19 Aug 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Video) What's inside a Smartphone? Exploring the internals with Apache NuttX Real-Time Operating System</title>
<link>https://youtu.be/Wnrq9BlNP9o</link>
<description><![CDATA[Smartphones are incredibly complex gadgets. What if we could learn the internals of smartphones... By booting Apache NuttX RTOS (Real-Time Operating System) on our phone? Over the past year, we have written a series of 24 articles explaining the inner workings of PINE64 PinePhone, and how we implemented the smartphone features with Apache NuttX RTOS. The articles cover the essential (and esoteric) topics on smartphone technology: MIPI DSI LCD Display, I2C Touch Panel, USB Controller, LTE Modem, Accelerometer / Gyroscope, Arm64 Interrupts and many more. We are also experimenting with newer, easier ways to create Smartphone Apps, with LVGL Graphics Library, Zig Programming Language, WebAssembly Simulation and Arm64 Emulation.]]></description>
<guid>https://youtu.be/Wnrq9BlNP9o</guid>
<pubDate>Sat, 19 Aug 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>RTOS on a RISC-V SBC: Star64 JH7110 + Apache NuttX</title>
<link>https://www.hackster.io/lupyuen/rtos-on-a-risc-v-sbc-star64-jh7110-apache-nuttx-2a7429</link>
<description><![CDATA[Here's how we boot a Real-Time Operating System (Apache NuttX) on the Star64 JH7110 64-bit RISC-V Single-Board Computer]]></description>
<guid>https://www.hackster.io/lupyuen/rtos-on-a-risc-v-sbc-star64-jh7110-apache-nuttx-2a7429</guid>
<pubDate>Tue, 08 Aug 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>Star64 JH7110 + NuttX RTOS: Creating the First Release for the RISC-V SBC</title>
<link>https://lupyuen.github.io/articles/release</link>
<description><![CDATA[Pine64's Star64 JH7110 RISC-V SBC is now supported in Apache NuttX RTOS Mainline! Let's review how we created the first release of NuttX for Star64]]></description>
<guid>https://lupyuen.github.io/articles/release</guid>
<pubDate>Mon, 07 Aug 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>Star64 JH7110 + NuttX RTOS: RISC-V PLIC Interrupts and Serial I/O</title>
<link>https://lupyuen.github.io/articles/plic</link>
<description><![CDATA[Apache NuttX RTOS on Pine64's Star64 JH7110 RISC-V SBC has a problem with Serial I/O Interrupts and the RISC-V Platform-Level Interrupt Controller (PLIC)... Let's fix this!]]></description>
<guid>https://lupyuen.github.io/articles/plic</guid>
<pubDate>Wed, 02 Aug 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>Star64 JH7110 + NuttX RTOS: RISC-V Semihosting and Initial RAM Disk</title>
<link>https://lupyuen.github.io/articles/semihost</link>
<description><![CDATA[Apache NuttX RTOS crashes on Pine64's Star64 JH7110 RISC-V SBC because there's no Semihosting. But no worries! We modified NuttX to boot with an Initial RAM Disk instead (initrd).]]></description>
<guid>https://lupyuen.github.io/articles/semihost</guid>
<pubDate>Fri, 28 Jul 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>Star64 JH7110 + NuttX RTOS: RISC-V Privilege Levels and UART Registers</title>
<link>https://lupyuen.github.io/articles/privilege</link>
<description><![CDATA[We're porting Apache NuttX RTOS to Pine64's Star64 JH7110 RISC-V SBC... And we see interesting issues with RISC-V Privilege Levels and 16550 UART Registers]]></description>
<guid>https://lupyuen.github.io/articles/privilege</guid>
<pubDate>Wed, 19 Jul 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>Star64 JH7110 RISC-V SBC: Boot from Network with U-Boot and TFTP</title>
<link>https://lupyuen.github.io/articles/tftp</link>
<description><![CDATA[Let's boot Apache NuttX RTOS (or Linux) over the Network with U-Boot Bootloader and TFTP... On Pine64's Star64 JH7110 RISC-V Single-Board Computer]]></description>
<guid>https://lupyuen.github.io/articles/tftp</guid>
<pubDate>Thu, 13 Jul 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>Apache NuttX RTOS on RISC-V: Star64 JH7110 SBC</title>
<link>https://lupyuen.github.io/articles/nuttx2</link>
<description><![CDATA[(Partially) Booting Apache NuttX Real-Time Operating System on Pine64's Star64 64-bit RISC-V Single-Board Computer, based on StarFive JH7110 SoC]]></description>
<guid>https://lupyuen.github.io/articles/nuttx2</guid>
<pubDate>Sun, 09 Jul 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>Booting RISC-V Linux on Star64 JH7110 SBC</title>
<link>https://lupyuen.github.io/articles/linux</link>
<description><![CDATA[Watch what happens when we boot Yocto and Armbian Linux on Pine64's Star64 64-bit RISC-V Single-Board Computer, based on StarFive JH7110 SoC]]></description>
<guid>https://lupyuen.github.io/articles/linux</guid>
<pubDate>Tue, 04 Jul 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>Inspecting the RISC-V Linux Images for Star64 SBC</title>
<link>https://lupyuen.github.io/articles/star64</link>
<description><![CDATA[Let's look inside the Linux Images for Pine64's Star64 64-bit RISC-V Single-Board Computer: Armbian and Yocto]]></description>
<guid>https://lupyuen.github.io/articles/star64</guid>
<pubDate>Fri, 30 Jun 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>64-bit RISC-V with Apache NuttX Real-Time Operating System</title>
<link>https://lupyuen.github.io/articles/riscv</link>
<description><![CDATA[Let's boot Apache NuttX Real-Time Operating System on a 64-bit RISC-V Device (QEMU Emulator) and explore the Boot Code inside NuttX]]></description>
<guid>https://lupyuen.github.io/articles/riscv</guid>
<pubDate>Sun, 25 Jun 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: The First Year</title>
<link>https://lupyuen.github.io/articles/pinephone2</link>
<description><![CDATA[2023 has been an awesome year for Apache NuttX RTOS on Pine64 PinePhone! Let's review the features that we've implemented... And what we'll do next]]></description>
<guid>https://lupyuen.github.io/articles/pinephone2</guid>
<pubDate>Wed, 21 Jun 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: Feature Phone UI in LVGL, Zig and WebAssembly</title>
<link>https://lupyuen.github.io/articles/lvgl4</link>
<description><![CDATA[How we created the LVGL Feature Phone UI for Pine64 PinePhone on Apache NuttX RTOS... By tweaking and testing in a Web Browser!]]></description>
<guid>https://lupyuen.github.io/articles/lvgl4</guid>
<pubDate>Sat, 10 Jun 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Possibly) LVGL in WebAssembly with Zig Compiler</title>
<link>https://lupyuen.github.io/articles/lvgl3</link>
<description><![CDATA[Can we preview an LVGL App in the Web Browser... With WebAssembly and Zig Compiler? Let's find out!]]></description>
<guid>https://lupyuen.github.io/articles/lvgl3</guid>
<pubDate>Wed, 31 May 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>Recipe for Wholemeal Sourdough with Bread Machine</title>
<link>https://lupyuen.github.io/articles/sourdough</link>
<description><![CDATA[Yep it's a Sourdough Recipe]]></description>
<guid>https://lupyuen.github.io/articles/sourdough</guid>
<pubDate>Mon, 22 May 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>Inside a Smartphone Accelerometer: PinePhone with NuttX RTOS</title>
<link>https://www.hackster.io/lupyuen/inside-a-smartphone-accelerometer-pinephone-with-nuttx-rtos-b92b58</link>
<description><![CDATA[When we tilt our Smartphone from Portrait to Landscape... How does it know that we're tilting our phone? Watch what happens when we snoop the MPU-6050 Accelerometer Data from PinePhone with Apache NuttX RTOS]]></description>
<guid>https://www.hackster.io/lupyuen/inside-a-smartphone-accelerometer-pinephone-with-nuttx-rtos-b92b58</guid>
<pubDate>Wed, 17 May 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: Phone Calls and Text Messages</title>
<link>https://lupyuen.github.io/articles/lte2</link>
<description><![CDATA[Making Phone Calls and Sending SMS Text Messages with PinePhone's Quectel EG25-G 4G LTE Modem... How we'll do it with Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/lte2</guid>
<pubDate>Thu, 04 May 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: 4G LTE Modem</title>
<link>https://lupyuen.github.io/articles/lte</link>
<description><![CDATA[All about the Quectel EG25-G 4G LTE Modem inside Pine64 PinePhone... And how we'll control it with Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/lte</guid>
<pubDate>Wed, 12 Apr 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: Simpler USB with EHCI (Enhanced Host Controller Interface)</title>
<link>https://lupyuen.github.io/articles/usb3</link>
<description><![CDATA[Porting the Enhanced Host Controller Interface (EHCI) USB Driver... From Apache NuttX RTOS to Pine64 PinePhone]]></description>
<guid>https://lupyuen.github.io/articles/usb3</guid>
<pubDate>Fri, 24 Mar 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Clickable) Call Graph for Apache NuttX Real-Time Operating System</title>
<link>https://lupyuen.github.io/articles/unicorn2</link>
<description><![CDATA[Here's how Apache NuttX RTOS boots on Pine64 PinePhone... Visualised as a Call Graph with Unicorn Emulator and Rust]]></description>
<guid>https://lupyuen.github.io/articles/unicorn2</guid>
<pubDate>Sun, 05 Mar 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Possibly) Emulate PinePhone with Unicorn Emulator</title>
<link>https://lupyuen.github.io/articles/unicorn</link>
<description><![CDATA[To make PinePhone testing easier... Can we emulate Arm64 PinePhone with Unicorn Emulator? Let's find out! We'll call the Unicorn Emulator in Rust]]></description>
<guid>https://lupyuen.github.io/articles/unicorn</guid>
<pubDate>Fri, 24 Feb 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: Exploring USB</title>
<link>https://lupyuen.github.io/articles/usb2</link>
<description><![CDATA[What's inside the USB Controller of Pine64 PinePhone... And how we'll create a USB Driver for Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/usb2</guid>
<pubDate>Mon, 20 Feb 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: LVGL Terminal for NSH Shell</title>
<link>https://lupyuen.github.io/articles/terminal</link>
<description><![CDATA[Let's build a Terminal App for PinePhone... With LVGL and Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/terminal</guid>
<pubDate>Fri, 03 Feb 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>Apache NuttX RTOS trips ChatGPT</title>
<link>https://lupyuen.github.io/articles/chatgpt</link>
<description><![CDATA[ChatGPT (the AI chatbot) will gladly answer questions about Apache NuttX RTOS! But the answers aren't always correct. Let's turn this into a learning opportunity, and understand why ChatGPT's answers are incorrect]]></description>
<guid>https://lupyuen.github.io/articles/chatgpt</guid>
<pubDate>Sun, 29 Jan 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: Boot to LVGL</title>
<link>https://lupyuen.github.io/articles/lvgl2</link>
<description><![CDATA[How we configure Apache NuttX RTOS to boot an LVGL Touchscreen App on Pine64 PinePhone]]></description>
<guid>https://lupyuen.github.io/articles/lvgl2</guid>
<pubDate>Sun, 22 Jan 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: Touch Panel</title>
<link>https://lupyuen.github.io/articles/touch2</link>
<description><![CDATA[All about the Capacitive Touch Panel inside Pine64 PinePhone... And how we created the PinePhone Touch Panel Driver for Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/touch2</guid>
<pubDate>Thu, 12 Jan 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: What is it?</title>
<link>https://lupyuen.github.io/articles/what</link>
<description><![CDATA[Let's talk about Apache NuttX RTOS for Pine64 PinePhone: What is it? Why are we doing this? How will we use it?]]></description>
<guid>https://lupyuen.github.io/articles/what</guid>
<pubDate>Tue, 03 Jan 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: Framebuffer</title>
<link>https://lupyuen.github.io/articles/fb</link>
<description><![CDATA[How NuttX Apps call the NuttX Framebuffer Interface to render graphics... And what's inside the Framebuffer Driver for Pine64 PinePhone]]></description>
<guid>https://lupyuen.github.io/articles/fb</guid>
<pubDate>Sun, 01 Jan 2023 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: LCD Panel</title>
<link>https://lupyuen.github.io/articles/lcd</link>
<description><![CDATA[Apache NuttX RTOS now boots with a Test Pattern on Pine64 PinePhone! Let's find out what's inside our new NuttX Driver for PinePhone's LCD Panel.]]></description>
<guid>https://lupyuen.github.io/articles/lcd</guid>
<pubDate>Wed, 28 Dec 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: Display Engine</title>
<link>https://lupyuen.github.io/articles/de3</link>
<description><![CDATA[Apache NuttX Kernel now supports Allwinner A64 Display Engine on Pine64 PinePhone! Here's how we call it to render graphics on PinePhone's LCD Display]]></description>
<guid>https://lupyuen.github.io/articles/de3</guid>
<pubDate>Fri, 23 Dec 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: MIPI Display Serial Interface</title>
<link>https://lupyuen.github.io/articles/dsi3</link>
<description><![CDATA[Apache NuttX Kernel has a driver for MIPI Display Serial Interface... Here's how it will be called for rendering PinePhone's LCD Display]]></description>
<guid>https://lupyuen.github.io/articles/dsi3</guid>
<pubDate>Thu, 15 Dec 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Preparing a Pull Request for Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/articles/pr</link>
<description><![CDATA[Here are the steps to prepare a Pull Request for Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/pr</guid>
<pubDate>Mon, 28 Nov 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: Render Graphics in Zig</title>
<link>https://lupyuen.github.io/articles/de2</link>
<description><![CDATA[How we render graphics directly to PinePhone's Display Hardware... With the Zig Programming Language and Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/de2</guid>
<pubDate>Tue, 15 Nov 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Rendering PinePhone's Display (DE and TCON0)</title>
<link>https://lupyuen.github.io/articles/de</link>
<description><![CDATA[How does Pine64 PinePhone render graphics on its LCD Display? Let's find out about the Allwinner A64 SoC's Display Engine (DE) and Timing Controller (TCON0).]]></description>
<guid>https://lupyuen.github.io/articles/de</guid>
<pubDate>Sun, 30 Oct 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: Display Driver in Zig</title>
<link>https://lupyuen.github.io/articles/dsi2</link>
<description><![CDATA[Let's build a PinePhone Display Driver in Zig... That will run on Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/dsi2</guid>
<pubDate>Tue, 18 Oct 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Understanding PinePhone's Display (MIPI DSI)</title>
<link>https://lupyuen.github.io/articles/dsi</link>
<description><![CDATA[How does Pine64 PinePhone control its LCD Display over MIPI Display Serial Interface? Let's find out!]]></description>
<guid>https://lupyuen.github.io/articles/dsi</guid>
<pubDate>Sun, 02 Oct 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX on a RISC-V IoT Gadget: PineDio Stack BL604</title>
<link>https://lupyuen.github.io/nuttx#nuttx-on-a-risc-v-iot-gadget-pinedio-stack-bl604</link>
<description><![CDATA[Pine64’s PineDio Stack BL604 is a RISC-V board that’s packed with IoT features: Touchscreen, LoRa, WiFi, BLE, GPS and more. In this presentation we’ll talk about the porting of NuttX to PineDio Stack, how we simplified the developer onboarding, and our plans to support LoRaWAN and LVGL Apps in Zig.]]></description>
<guid>https://lupyuen.github.io/nuttx#nuttx-on-a-risc-v-iot-gadget-pinedio-stack-bl604</guid>
<pubDate>Sun, 25 Sep 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Visual Programming with Zig and NuttX Sensors</title>
<link>https://lupyuen.github.io/nuttx#visual-programming-with-zig-and-nuttx-sensors</link>
<description><![CDATA[What if we could drag-and-drop NuttX Sensors to create IoT Apps? In this presentation we’ll explore Blockly, the web-based toolkit for Visual Programming, and how we might customise Blockly to create NuttX Sensor Apps. We’ll also discuss the Zig Programming Language, and why Blockly will generate NuttX Sensor Apps as Zig programs.]]></description>
<guid>https://lupyuen.github.io/nuttx#visual-programming-with-zig-and-nuttx-sensors</guid>
<pubDate>Sat, 24 Sep 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Simpler, safer LVGL Touchscreen Apps with Zig and NuttX</title>
<link>https://lupyuen.github.io/nuttx#simpler-safer-lvgl-touchscreen-apps-with-zig-and-nuttx</link>
<description><![CDATA[Is there a simpler and safer way to code Touchscreen Apps with the LVGL Graphics Library? In this presentation we’ll talk about migrating a NuttX LVGL App from C to Zig, and the benefits that it brings.]]></description>
<guid>https://lupyuen.github.io/nuttx#simpler-safer-lvgl-touchscreen-apps-with-zig-and-nuttx</guid>
<pubDate>Sat, 24 Sep 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: Blinking the LEDs</title>
<link>https://lupyuen.github.io/articles/pio</link>
<description><![CDATA[Let's experiment with the GPIO Hardware on Pine64 PinePhone... With a little help from Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/pio</guid>
<pubDate>Thu, 22 Sep 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: UART Driver</title>
<link>https://lupyuen.github.io/articles/serial</link>
<description><![CDATA[Our PinePhone Operating System will be awfully quiet if we don't implement UART Input and Output... Here's how we implemented the UART Driver for Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/serial</guid>
<pubDate>Fri, 09 Sep 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX RTOS for PinePhone: Fixing the Interrupts</title>
<link>https://lupyuen.github.io/articles/interrupt</link>
<description><![CDATA[How Pine64 PinePhone handles Arm64 Interrupts with the Generic Interrupt Controller... And how we implemented PinePhone Interrupt Handling in Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/interrupt</guid>
<pubDate>Thu, 01 Sep 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>PinePhone boots Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/articles/uboot</link>
<description><![CDATA[How we ported Apache NuttX RTOS to PinePhone... And what's inside the U-Boot Bootloader]]></description>
<guid>https://lupyuen.github.io/articles/uboot</guid>
<pubDate>Sun, 28 Aug 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Apache NuttX RTOS on Arm Cortex-A53: How it might run on PinePhone</title>
<link>https://lupyuen.github.io/articles/arm</link>
<description><![CDATA[Apache NuttX RTOS now runs on 64-bit Arm Cortex-A53 with Multi-Core Symmetric Multi-Processing... Will it run on PinePhone? Let's find out!]]></description>
<guid>https://lupyuen.github.io/articles/arm</guid>
<pubDate>Thu, 25 Aug 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Visual Programming with Zig and NuttX Sensors</title>
<link>https://lupyuen.github.io/articles/visual</link>
<description><![CDATA[What if we could drag-and-drop NuttX Sensors... To create IoT Sensor Apps in Zig? Let's find out!]]></description>
<guid>https://lupyuen.github.io/articles/visual</guid>
<pubDate>Fri, 19 Aug 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Zig Visual Programming with Blockly</title>
<link>https://lupyuen.github.io/articles/blockly</link>
<description><![CDATA[How we create a Zig program visually with Blockly, the drag-n-drop way... And how we might use it to build Sensor IoT Apps for Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/blockly</guid>
<pubDate>Sun, 07 Aug 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Read NuttX Sensor Data with Zig</title>
<link>https://lupyuen.github.io/articles/sensor</link>
<description><![CDATA[Using Zig to read Sensor Data on Apache NuttX RTOS... With Bosch BME280 Temperature / Humidity / Air Pressure Sensor]]></description>
<guid>https://lupyuen.github.io/articles/sensor</guid>
<pubDate>Fri, 29 Jul 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Build an LVGL Touchscreen App with Zig</title>
<link>https://lupyuen.github.io/articles/lvgl</link>
<description><![CDATA[Can we use Zig to build an LVGL Touchscreen App for Apache NuttX RTOS? Also wrap the LVGL API in Zig to build simpler, safer LVGL Apps? Let's find out!]]></description>
<guid>https://lupyuen.github.io/articles/lvgl</guid>
<pubDate>Tue, 12 Jul 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Build a PinePhone App with Zig and zgt</title>
<link>https://lupyuen.github.io/articles/pinephone</link>
<description><![CDATA[Can we use Zig to code PinePhone Apps? Maybe make them simpler and safer? Let's find out!]]></description>
<guid>https://lupyuen.github.io/articles/pinephone</guid>
<pubDate>Sat, 25 Jun 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Build an IoT App with Zig and LoRaWAN</title>
<link>https://lupyuen.github.io/articles/iot</link>
<description><![CDATA[Let's build a complex IoT App with Zig and LoRaWAN... And run it on RISC-V BL602 with Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/iot</guid>
<pubDate>Wed, 15 Jun 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Zig on RISC-V BL602: Quick Peek with Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/articles/zig</link>
<description><![CDATA[How we run Zig on the BL602 RISC-V SoC... With Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/zig</guid>
<pubDate>Thu, 02 Jun 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>(Mostly) Automated Testing of Apache NuttX RTOS on PineDio Stack BL604 RISC-V Board</title>
<link>https://lupyuen.github.io/articles/auto2</link>
<description><![CDATA[Pine64 is about to launch the PineDio Stack BL604 RISC-V Board with LoRa and Touch Screen... Here's how we automatically flash and test every new release of Apache NuttX RTOS for PineDio Stack]]></description>
<guid>https://lupyuen.github.io/articles/auto2</guid>
<pubDate>Sun, 22 May 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX GPIO Expander for PineDio Stack BL604</title>
<link>https://lupyuen.github.io/articles/expander</link>
<description><![CDATA[PineDio Stack BL604 RISC-V Board has an interesting problem on Apache NuttX RTOS... Too many GPIOs! Let's fix this with a GPIO Expander]]></description>
<guid>https://lupyuen.github.io/articles/expander</guid>
<pubDate>Tue, 03 May 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>NuttX Touch Panel Driver for PineDio Stack BL604</title>
<link>https://lupyuen.github.io/articles/touch</link>
<description><![CDATA[How we created the Apache NuttX RTOS Driver for Hynitron CST816S I2C Touch Panel... For PineDio Stack BL604 RISC-V Board]]></description>
<guid>https://lupyuen.github.io/articles/touch</guid>
<pubDate>Thu, 21 Apr 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>PineDio Stack BL604 runs Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/articles/pinedio2</link>
<description><![CDATA[Running Apache NuttX RTOS on PineDio Stack BL604 RISC-V board... With ST7789 Display, LVGL Graphics and LoRaWAN]]></description>
<guid>https://lupyuen.github.io/articles/pinedio2</guid>
<pubDate>Tue, 12 Apr 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>ST7789 Display with LVGL Graphics on Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/articles/st7789</link>
<description><![CDATA[RISC-V BL602 SoC with ST7789 SPI Display and LVGL Graphics Library... Let's make it work on Apache NuttX RTOS!]]></description>
<guid>https://lupyuen.github.io/articles/st7789</guid>
<pubDate>Sat, 02 Apr 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Rust talks I2C on Apache NuttX RTOS</title>
<link>https://lupyuen.github.io/articles/rusti2c</link>
<description><![CDATA[Reading the Bosch BME280 I2C Sensor with Rust Embedded HAL... On BL602 RISC-V SoC and Apache NuttX RTOS]]></description>
<guid>https://lupyuen.github.io/articles/rusti2c</guid>
<pubDate>Tue, 22 Mar 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Apache NuttX Driver for BME280 Sensor: Ported from Zephyr OS</title>
<link>https://lupyuen.github.io/articles/bme280</link>
<description><![CDATA[Apache NuttX OS talks I2C with Bosch BME280 Sensor on BL602 RISC-V SoC... Thanks to the BME280 Driver ported from Zephyr OS]]></description>
<guid>https://lupyuen.github.io/articles/bme280</guid>
<pubDate>Thu, 10 Mar 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Connect IKEA Air Quality Sensor to Apache NuttX OS</title>
<link>https://lupyuen.github.io/articles/ikea</link>
<description><![CDATA[How we expose the UART Port on IKEA VINDRIKTNING Air Quality Sensor... And read the PM 2.5 data with PineDio Stack BL604 RISC-V Board]]></description>
<guid>https://lupyuen.github.io/articles/ikea</guid>
<pubDate>Sat, 12 Feb 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>BL602 EFlash Loader: Reverse Engineered with Ghidra</title>
<link>https://lupyuen.github.io/articles/loader</link>
<description><![CDATA[What's inside the EFlash Loader that flashes all firmware to the BL602 RISC-V SoC]]></description>
<guid>https://lupyuen.github.io/articles/loader</guid>
<pubDate>Wed, 02 Feb 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Auto Flash and Test NuttX on RISC-V BL602</title>
<link>https://lupyuen.github.io/articles/auto</link>
<description><![CDATA[How we automagically flash and test the daily build of Apache NuttX OS on BL602 RISC-V SoC]]></description>
<guid>https://lupyuen.github.io/articles/auto</guid>
<pubDate>Wed, 26 Jan 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Rust on Apache NuttX OS</title>
<link>https://lupyuen.github.io/articles/rust2</link>
<description><![CDATA[How we run Rust programs on Apache NuttX OS... And transmit a LoRa Message with Rust]]></description>
<guid>https://lupyuen.github.io/articles/rust2</guid>
<pubDate>Wed, 12 Jan 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>Encode Sensor Data with CBOR on Apache NuttX OS</title>
<link>https://lupyuen.github.io/articles/cbor2</link>
<description><![CDATA[Compressing Sensor Data with CBOR on Apache NuttX OS... By calling TinyCBOR Library]]></description>
<guid>https://lupyuen.github.io/articles/cbor2</guid>
<pubDate>Mon, 10 Jan 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>LoRaWAN on Apache NuttX OS</title>
<link>https://lupyuen.github.io/articles/lorawan3</link>
<description><![CDATA[Porting Semtech's LoRaWAN Stack to Apache NuttX OS... And testing it on PineDio Stack BL604 RISC-V Board]]></description>
<guid>https://lupyuen.github.io/articles/lorawan3</guid>
<pubDate>Mon, 03 Jan 2022 00:00:00 +0000</pubDate>
</item>
<item>
<title>LoRa SX1262 on Apache NuttX OS</title>
<link>https://lupyuen.github.io/articles/sx1262</link>
<description><![CDATA[Porting the LoRa Driver for Semtech SX1262 from Linux to Apache NuttX OS... And testing it on PineDio Stack BL604 RISC-V Board]]></description>
<guid>https://lupyuen.github.io/articles/sx1262</guid>
<pubDate>Wed, 22 Dec 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>SPI on Apache NuttX OS</title>
<link>https://lupyuen.github.io/articles/spi2</link>
<description><![CDATA[How we transmit and receive data over SPI on Apache NuttX OS... By coding a NuttX Device Driver]]></description>
<guid>https://lupyuen.github.io/articles/spi2</guid>
<pubDate>Mon, 13 Dec 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>Apache NuttX OS on RISC-V BL602 and BL604</title>
<link>https://lupyuen.github.io/articles/nuttx</link>
<description><![CDATA[How we build, flash and test the Apache NuttX operating system on BL602 and BL604 RISC-V SoCs]]></description>
<guid>https://lupyuen.github.io/articles/nuttx</guid>
<pubDate>Wed, 24 Nov 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>PineDio LoRa Gateway: Testing The Prototype</title>
<link>https://lupyuen.github.io/articles/gateway</link>
<description><![CDATA[How we test the pre-production PineDio LoRa Gateway by Pine64... And connect it to The Things Network]]></description>
<guid>https://lupyuen.github.io/articles/gateway</guid>
<pubDate>Thu, 11 Nov 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>Build a Linux Driver for PineDio LoRa SX1262 USB Adapter</title>
<link>https://lupyuen.github.io/articles/usb</link>
<description><![CDATA[How we build a LoRa SX1262 Driver for PineDio USB Adapter... And test it on Pinebook Pro]]></description>
<guid>https://lupyuen.github.io/articles/usb</guid>
<pubDate>Thu, 28 Oct 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>Monitor IoT Devices in The Things Network with Prometheus and Grafana</title>
<link>https://lupyuen.github.io/articles/prometheus</link>
<description><![CDATA[How we monitor our IoT Sensor Devices connected to The Things Network... With Prometheus Time Series Database and Grafana Dashboards]]></description>
<guid>https://lupyuen.github.io/articles/prometheus</guid>
<pubDate>Thu, 21 Oct 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>CBOR Payload Formatter for The Things Network</title>
<link>https://lupyuen.github.io/articles/payload</link>
<description><![CDATA[How we decode CBOR Sensor Data inside The Things Network... With a CBOR Payload Formatter]]></description>
<guid>https://lupyuen.github.io/articles/payload</guid>
<pubDate>Mon, 18 Oct 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>Internal Temperature Sensor on BL602</title>
<link>https://lupyuen.github.io/articles/tsen</link>
<description><![CDATA[How we read the Internal Temperature Sensor on the BL602 and BL604 RISC-V SoCs... And transmit to The Things Network]]></description>
<guid>https://lupyuen.github.io/articles/tsen</guid>
<pubDate>Thu, 14 Oct 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>IoT Digital Twin with Roblox and The Things Network</title>
<link>https://lupyuen.github.io/articles/roblox</link>
<description><![CDATA[Can we use Roblox to monitor and control an IoT Device... Through LoRaWAN and The Things Network?]]></description>
<guid>https://lupyuen.github.io/articles/roblox</guid>
<pubDate>Fri, 08 Oct 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>Encode Sensor Data with CBOR on BL602</title>
<link>https://lupyuen.github.io/articles/cbor</link>
<description><![CDATA[How we compress Sensor Data with CBOR... And transmit over LoRaWAN on the BL602 / BL604 RISC-V SoC]]></description>
<guid>https://lupyuen.github.io/articles/cbor</guid>
<pubDate>Tue, 05 Oct 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>Grafana Data Source for The Things Network</title>
<link>https://lupyuen.github.io/articles/grafana</link>
<description><![CDATA[How we visualise Sensor Data from The Things Network... With a Custom MQTT Data Source in Grafana]]></description>
<guid>https://lupyuen.github.io/articles/grafana</guid>
<pubDate>Mon, 27 Sep 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>The Things Network on PineDio Stack BL604 RISC-V Board</title>
<link>https://lupyuen.github.io/articles/ttn</link>
<description><![CDATA[How we join The Things Network and send data to the cloud on the new PineDio Stack BL604 RISC-V Board]]></description>
<guid>https://lupyuen.github.io/articles/ttn</guid>
<pubDate>Tue, 21 Sep 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>LoRaWAN on PineDio Stack BL604 RISC-V Board</title>
<link>https://lupyuen.github.io/articles/lorawan2</link>
<description><![CDATA[How we test LoRaWAN on the new PineDio Stack BL604 RISC-V Board]]></description>
<guid>https://lupyuen.github.io/articles/lorawan2</guid>
<pubDate>Thu, 16 Sep 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>Rust on RISC-V BL602: Rhai Scripting</title>
<link>https://lupyuen.github.io/articles/rhai</link>
<description><![CDATA[Can we drag-and-drop Rhai Scripts... And run them on WebAssembly and BL602 RISC-V SoC?]]></description>
<guid>https://lupyuen.github.io/articles/rhai</guid>
<pubDate>Sat, 04 Sep 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>PineDio Stack BL604 RISC-V Board: Testing The Prototype</title>
<link>https://lupyuen.github.io/articles/pinedio</link>
<description><![CDATA[What's it like to create Open Source Software for brand new prototype hardware? Read on to find out!]]></description>
<guid>https://lupyuen.github.io/articles/pinedio</guid>
<pubDate>Sun, 29 Aug 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>Rust on RISC-V BL602: Simulated with WebAssembly</title>
<link>https://lupyuen.github.io/articles/rustsim</link>
<description><![CDATA[Can we run Rust Firmware for BL602 RISC-V SoC in a Web Browser... Simulated with WebAssembly?]]></description>
<guid>https://lupyuen.github.io/articles/rustsim</guid>
<pubDate>Mon, 16 Aug 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>Rust on RISC-V BL602: Is It Sunny?</title>
<link>https://lupyuen.github.io/articles/adc</link>
<description><![CDATA[How we create Rust Firmware that reads Analog Inputs... With the Analog-to-Digital Converter on RISC-V BL602]]></description>
<guid>https://lupyuen.github.io/articles/adc</guid>
<pubDate>Tue, 03 Aug 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>RISC-V BL706 Audio Video Board</title>
<link>https://lupyuen.github.io/articles/bl706</link>
<description><![CDATA[What's inside the Bouffalo Lab RISC-V BL706 Audio Video Board... And how it differs from BL602]]></description>
<guid>https://lupyuen.github.io/articles/bl706</guid>
<pubDate>Wed, 14 Jul 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>Reverse Engineering WiFi on RISC-V BL602</title>
<link>https://lupyuen.github.io/articles/wifi</link>
<description><![CDATA[What happens inside the WiFi Driver on RISC-V BL602... And how we found the incomplete source code for the driver]]></description>
<guid>https://lupyuen.github.io/articles/wifi</guid>
<pubDate>Wed, 07 Jul 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>Machine Learning on RISC-V BL602 with TensorFlow Lite</title>
<link>https://lupyuen.github.io/articles/tflite</link>
<description><![CDATA[How we run TensorFlow Lite on RISC-V BL602... To create a Glowing LED]]></description>
<guid>https://lupyuen.github.io/articles/tflite</guid>
<pubDate>Tue, 22 Jun 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>BL602 Bootloader</title>
<link>https://lupyuen.github.io/articles/boot</link>
<description><![CDATA[All about the BL602 RISC-V Bootloader... And how it loads the Application Firmware into XIP Flash Memory]]></description>
<guid>https://lupyuen.github.io/articles/boot</guid>
<pubDate>Wed, 09 Jun 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>Simulate RISC-V BL602 with WebAssembly, uLisp and Blockly</title>
<link>https://lupyuen.github.io/articles/wasm</link>
<description><![CDATA[How we simulate the BL602 RISC-V SoC with uLisp in WebAssembly... And preview Blockly uLisp Apps in the Web Browser]]></description>
<guid>https://lupyuen.github.io/articles/wasm</guid>
<pubDate>Thu, 27 May 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>uLisp and Blockly on PineCone BL602 RISC-V Board</title>
<link>https://lupyuen.github.io/articles/lisp</link>
<description><![CDATA[Porting the uLisp Interpreter to PineCone BL602 RISC-V Board... And writing graphical programs with Blockly (Scratch)]]></description>
<guid>https://lupyuen.github.io/articles/lisp</guid>
<pubDate>Fri, 14 May 2021 00:00:00 +0000</pubDate>
</item>
<item>
<title>PineCone BL602 Talks LoRaWAN</title>
<link>https://lupyuen.github.io/articles/lorawan</link>
<description><![CDATA[How we connect PineCone BL602 RISC-V Board to LoRaWAN... With the Pine64 RFM90 LoRa Module]]></description>
<guid>https://lupyuen.github.io/articles/lorawan</guid>
<pubDate>Tue, 11 May 2021 00:00:00 +0000</pubDate>
</item>
<item>