PTP Increment and Addend calculator

ptp-calc.py

#!/usr/bin/env python
from tabulate import tabulate
import math

def getHexStr(num, dig):
    return '0x{0:0{1}X}'.format(num, dig)

minClk=50000000.0
sysClk=216000000.0
#sysClk=76000000.0
#sysClk=144000000.0
ratio=sysClk/minClk

tHeaders = ["Tick", "Increment", "Addend"]
ANtable = []
RMtable = []

for increment in range(1, 256):
    # Application Note Calculus
    tick = increment*math.pow(10,9)/math.pow(2,31)
    addend = int(math.pow(2,63)/(sysClk*increment))
    ANtable.append([tick, increment, getHexStr(addend, 8)])
# Reference Manual Calculus
addend = int(math.pow(2, 32) / ratio)
increment= int(math.pow(2,63)/(sysClk*addend))
tick = increment*math.pow(10,9)/math.pow(2,31)
RMtable.append([tick, increment, getHexStr(addend, 8)])
print "Application Note Calculus"
print(tabulate(ANtable, tHeaders, tablefmt="grid"))
print "Reference Manual Calculus"
print(tabulate(RMtable, tHeaders, tablefmt="grid"))