#include<Servo.h>
Servo FS90;

byte FS90Pin = 9;
byte analogPinA0 = A0;
float PosS=0.5;
long int cycle;
long int tHigh=1000;
long int tLow=100;


void setup() {
  Serial.begin(9600);
}

void loop (){
  while (PosS<80){
    tHigh = pulseIn(A0, 1); 
    tLow = pulseIn(A0, 0);
    cycle = tHigh+tLow;
    PosS = tHigh/cycle;
    PosS=PosS*100;
    Serial.print("PosS:");
    Serial.print(PosS,4);
    Serial.print('\n');
    Serial.print("cycle:");
    Serial.print(cycle);
    Serial.print('\n');
    Serial.print("tHigh");
    Serial.print(tHigh);
    Serial.print('\n');
    Serial.print("tLow");
    Serial.print(tLow);
    Serial.print('\n');
  }
}