Walkthrough for a small embedded system based on ATmega328p which controls a PC cooler fan. The focus of this experiment is on using only open-source CLI software tooling for the solution. Additionally, no development boards were used, just the bare microcontroller, which should be helpful in transitioning to building your own boards.
Exploring a minimal implementation of a time-sharing kernel on RISC-V, implemented in Zig, on top of OpenSBI.
Walkthrough for how the Mrav CPU project handles RTL simulation and other testing aspects.
Quick overview of how Go tools for the Mrav custom CPU are run inside a browser by leveraging WASM. The project is built with Bazel using Go rules.
Overview of how SystemVerilog RTL code is generated in the build flow for the Mrav custom CPU core.
Deep-dive into software tooling for a custom CPU platform Mrav.
Practical example of using Bazel to build an embedded C program, bare-metal. Concrete example with AVR ATmega328p.
Explainer for how Mrav CPU assembler was created. Shortest path towards a small, working assembler for a custom ISA.
First part of the series explaining the development of a custom CPU called Mrav and the tooling for it. Lessons learned from working on Google TPU chips.
Learn how to use Bazel to easily integrate (with a single command) mainline Lua in Go and potentially other languages (e.g. embedded C programs).
Walkthrough for cross compiling a mixed C and Go binary for another platform using cgo and Bazel. Example is done with x86_64/Linux compiling for RISC-V/Linux.
Quick demonstration of using User Mode Linux (UML) to run a Linux VM inside Linux's userspace, without additional VM software or even root permissions
See how AI is pushing the boundaries of computer engineering. I'm sharing my journey driving AI to build a functional RISC-V 32-bit VM simulation, reaching the milestone of booting OpenSBI. Discover the process behind this AI-assisted journey and what's next on the path to a fully bootable Linux kernel and potentially an FPGA implementation.
Explore how to run JavaScript directly on bare metal, like microcontrollers. This post shows you how to get JavaScript code executing on embedded hardware without an operating system, opening up new ways to program these chips. The example is done on a RISC-V VM.
Guide to implementing a C standard library for bare metal hardware using Newlib, enabling powerful functions like printf and malloc without relying on an operating system. This step-by-step guide demonstrates how to configure and integrate Newlib on RISC-V architecture, showing you how to redirect standard I/O through UART for embedded systems development.
End-to-end documentation of a journey from no PCB experience to fabricating my own Linux-ready system that can boot the latest mainline kernel. This article is the recommended reading for someone building their first embedded Linux board. F1C100s SoC is used for this sample board.
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