Before we write a single line of Python, we have to understand what we are dealing with. UF2 is a container format. It strips away the complexity of Intel HEX or S-Records and replaces it with 512-byte blocks.
You cannot feed a .uf2 file directly into a decompiler like Ghidra or IDA Pro. You must strip the container headers and reconstruct the raw firmware image. uf2 decompiler
In Ghidra, you can rename FUN_10001234 to toggle_led . The decompiler will propagate your name. This is manual reverse engineering. Before we write a single line of Python,
Once you have the raw binary (usually ARM Thumb code for devices like the RP2040), you need a disassembler to see the logic. uf2 decompiler