meCoffee_in_CPP

meCoffee firmware

PlatformIO project (ATmega328P, 8 MHz, Arduino core) that re-implements the behaviour of the original V10 image.

Toolchain

The registry toolchain toolchain-atmelavr@1.70300.191015 is an x86_64 build and does not run on Apple Silicon without Rosetta. platformio.ini therefore points toolchain-atmelavr at tools/toolchain-native, which symlinks /opt/homebrew/bin/avr-* (avr-gcc 9.5, avr-libc 2.1.0). On an Intel or Rosetta host replace that line with toolchain-atmelavr@1.70300.191015. The framework is pinned to framework-arduino-avr@5.4.0 (Arduino core 1.8.8); the original used an older core, which phase 0 still has to compare in simulation.

Naming

Project code uses the meCoffee C++ namespace, meCoffee_ library names, and MECOFFEE_ macros and environment variables. These names stay independent of firmware versions. The original-image simulator remains tools/sim/v10sim.py; its image override is MECOFFEE_FLASH.

Identifiers are complete descriptive words. Persisted and on-the-wire names (tmpsp, pd1p, the COMPAT_V10 build flag, oracle IDs in test names) are compatibility contracts and are kept; the internal members that hold them have descriptive names (for example brewSetpoint).