Calculate IWDG Reload value

CalculateIWDG.py

import argparse
from tabulate import tabulate

parser = argparse.ArgumentParser(description='Calculate IWDG RLR')

parser.add_argument("-ms", help="Reload time in ms", default=20 , type=int)
parser.add_argument("-pr", help="PR value as decimal", default=1, type=int)
parser.add_argument("-lsi", help="LSI Clock in Hz", default=40000, type=int)

args = parser.parse_args()

ms = args.ms
PR = args.pr
LSI = args.lsi

RL = int(((ms*LSI)/(4*(2**PR)*1000))-1)

table = [
["Var", "Value", "HEX", "BIN"],
["MS", f'{ms} ms'],
["LSI", f'{LSI} Hz'],
["PR", PR, hex(PR), bin(PR)],
["RL", RL, hex(RL), bin(RL)]
]

print(tabulate(table, headers='firstrow', tablefmt='grid'))