Help SPIN to ASEM

Julian800

I am new to microcontroller. I just did some code use counter to generate clock for stepper with ramp. I need code run faster, But I am not familiar with assembly. ·Could someone help me to write some assembly code to do same thing?
·
pub Ramp (freq) | preFreq, tempFreqReg , RampSpeed
·
····· RampSpeed: =53687
····· tempFreqReg:= NcoFrqReg(freq)
·
····· if tempFreqReg <> frqa
······· repeat·· until tempFreqReg == frqa
·········· if tempFreqReg > frqa
··············· frqa :=· frqa + RampSpeed <# tempFreqReg
···············
·········· elseif· tempFreqReg < frqa·
··············· frqa := frqa· - RampSpeed #> tempFreqReg
···············
·····················
········· waitcnt(clkfreq/1_000 + cnt)
·
·········
PUB NcoFrqReg(frequency) : frqReg
{{
Returns frqReg = frequency × (2³² ÷ clkfreq) calculated with binary long
division.· This is faster than the floating point library, and takes less
code space.· This method is an adaptation of the CTR object's fraction
method.
}}
·
·frqReg := fraction(frequency, clkfreq, 1)
·
·
PRI fraction(a, b, shift) : f
·
· if shift > 0························ 'if shift, pre-shift a or b left
··· a <<= shift······················· 'to maintain significant bits while
· if shift < 0························ 'insuring proper result
··· b <<= -shift
·
· repeat 32··························· 'perform long division of a/b
··· f <<= 1
··· if a => b
····· a -= b
····· f++··········
··· a <<= 1 ··

Ale

how about decreasing the delay imposed by waitcnt ?...

btw, get to read one of the multiple asm tutorials around and then use the simulator in my sig to test out your code!

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Visit some of my articles at Propeller Wiki:
MATH on the propeller propeller.wikispaces.com/MATH
pPropQL: propeller.wikispaces.com/pPropQL
pPropQL020: propeller.wikispaces.com/pPropQL020
OMU for the pPropQL/020 propeller.wikispaces.com/OMU
pPropellerSim - A propeller simulator for ASM development sourceforge.net/projects/ppropellersim