Read a CrOS fan speed using the memmap, for Framework Laptops (AMD, but could be adjusted for other laptops)

ec-lpc-memmap.py

# Requires portio and usually root access
# If you're using a venv, run it something like `sudo .venv/bin/python ec-lpc-memmap.py`

import portio

EC_LPC_ADDR_MEMMAP = 0xE00 # will be 0x900 on most other models
EC_MEMMAP_SIZE = 255
EC_MEMMAP_FAN = 0x10

if portio.ioperm(EC_LPC_ADDR_MEMMAP, EC_MEMMAP_SIZE, True):
    print("Permission denied. Try running as root.")
    exit(1)

print(portio.inw(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_FAN))