My solutions for Advent of Code 2025, on the TI-84 Plus CE Graphing Calculator. We'll see how much I end up actually doing.
This is a script I made to download a specified day's input and convert it to an 8xv file to send to the calculator. It also replaces all newlines (0x0A) with nulls (0x00) to make life easier. Syntax is as follows:
./grabInput.sh <year> <day>
It will create a directory called "Day<day>", with a converted input.txt and Input.8xv. It requires a file cookies.txt to be in the same directory as the script, which has the necessary info to allow you to properly download the input. You can generate a cookies.txt file with the cookies.txt extension for Chrome or Firefox. The script uses wget, tr, and convbin.
This script sets up my template directories for the specified year/day, along with creating a makefile. Syntax is as follows:
./setupDirectories.sh <year> <day>
It will generate a filestructure like this:
├── Day<day>
│ ├── Part1
│ │ ├── src
│ │ ├── makefile
│ ├── Part2
│ │ ├── src
│ │ ├── makefile
It will generate a template makefile something like this (note that the part will change based on the part directory it is in):
NAME = AOC<day>
DESCRIPTION = "Advent of Code <year>, Day <day>, Part 1"
COMPRESSED = YES
ARCHIVED = YES
CFLAGS = -Wall -Wextra -Oz
CXXFLAGS = -Wall -Wextra -Oz
include $(shell cedev-config --makefile)