As a thin layer on top of assembly language, C’s integer arithmetic APIs have always been minimal, effectively just mapping the underlying assembly opcodes to the C arithmetic operators. In addition, while unsigned arithmetic can safely overflow in C, signed arithmetic overflow is considered undefined behaviour, and UB can end up in heartache for C developers.
I was hoping to make more progress on self-hosting my scripting language (Kalos) this week, but I’m running out of steam because I think I coded myself into a corner. This is not a post where I’ve got everything figured out, but instead I’m taking a few moments to re-hash where things are at and figure out a plan for the future.
This is the last part of a three-part series covering the odyssey of getting a new coffeemaker, learning BTLE and how it works, reverse-engineering the Bluetooth interface and Android applications for the coffeemaker, writing a Rust-based CLI interface, and finally, hooking it all up to a GitHub actions bot that lets you brew a coffee just by filing an issue!
In part 2 we got the command-line application working, and now it’s time to connect the dots and build a secure, yet web-accessible interface.
This is part 2 of a three-part series covering the odyssey of getting a new coffeemaker, learning BTLE and how it works, reverse-engineering the Bluetooth interface and Android applications for the coffeemaker, writing a Rust-based CLI interface, and finally, hooking it all up to a GitHub actions bot that lets you brew a coffee just by filing an issue!
This is going to be a long journey in three parts that covers the odyssey of getting a new coffeemaker, learning BTLE and how it works, reverse-engineering the Bluetooth interface and Android applications for the coffeemaker, writing a Rust-based CLI interface, and finally, hooking it all up to a GitHub actions bot that lets you brew a coffee just by filing an issue!