Advent of Code on Arduino Uno R4 Minima.
Arduino Specs
- Clock Speed: 48 MHz
- Memory: 256 kB Flash, 32 kB RAM
With 32kB of RAM, at least some of the problems should be possible to solve on an Arduino. I chose not to upload the input as a part of the program because I think it's more interesting this way. As a result, every solution must handle reading the input character by character.
In aoc.ino change the first line to choose the solution to compile.
You need an aforementioned Arduino board and arduino-cli. Adjust the PORT
variable in the Makefile and run make arduino-all. This will compile the
solution, upload the program to the board and run monitor which let's you
communicate with the board. Then paste the input to the terminal.
In local.c change the first line to choose the solution to compile.
Compile with make local and run, for instance, like this: cat input.txt | ./bin/aoc (shortcut: make run). Note that locally the memory is not limited
to 32 kB.
I'm not trying to optimize every byte so the numbers below definitely can be improved. For instance, by making various arrays in the code just large enough to hold the input.
| Problem | Flash [bytes] | RAM [bytes] | Notes |
|---|---|---|---|
| 2024-01 | 40108 | 11960 | |
| 2024-02 | 39532 | 4044 | |
| 2024-03 | 39872 | 4024 | |
| 2024-04 | 39908 | 19964 | |
| 2024-05 | - | - | doesn't work on arduino |
| 2024-06 | - | - | only part 1 done |