STM32 G.P. Timer Prescaler and Period Calc

stm32gpTimerCalc.py

#!/usr/bin/env python

timerBusClkFreq=216000000
timerDesiredIntFreq=5000

#counts=43200
counts=timerBusClkFreq/timerDesiredIntFreq
prescaler=0
period=0
#counts = (prescaler + 1)*(period + 1)
prescalerMax = counts - 1
periodMax = counts - 1

print "prescalerMax: ", prescalerMax
print "periodMax: ", periodMax
minDiffDelta=prescalerMax
for prescaler in range(0, counts):
    for period in range(0, counts):
        curCount = (prescaler + 1)*(period + 1)
        delta = abs(prescaler - period)
        if curCount > counts:
            break
        if curCount == counts:
            print "prescaler: ", prescaler,
            print "period: ", period,
            print "delta: ", delta,
            if delta < minDiffDelta:
                minDiffDelta = delta
                print "<"
            else:
                print ""