ATTiny85; order of magnitude loss of speed when enabling map AnalogRead function

[lost_bro]

Good day Jiggy-Ninja

Now we have it See the attached scope shots.

I followed your advice, had to use one of older sketches which used the:

 if(Pwm==pwmMax)
        {
          digitalWrite(outPin,LOW);
          delay(ramplengthpause);
        }

This piece of code along with your suggestion to put:

  }
              while(micros()-delayStartTime<=INTERVAL);
              digitalWrite(outPin,HIGH);

here, made all the difference. Here's the final void() loop:

void loop()
{
  int static Dir=1; 
 
  if((micros()-StartUs) >= ramplength) 
      {                                           
        Pwm+=Dir;                 //increment or decrement PWM depending of sign of Dir 
        analogWrite(ledPin, Pwm); //Update built-in LED
        if(Pwm==pwmMax) Dir=-1;   //if PWM reaches the maximum: change direction 
        if(Pwm==pwmMax)
        {
          digitalWrite(outPin,LOW);
          delay(ramplengthpause);
        }
        if(Pwm==pwmMin) 
        { 
          digitalWrite(outPin,LOW);          
          delay(INTERVAL);
          
          Dir=+1;                 //delay *INTERVAL* & change direction 
          delayStartTime = micros();
          
              do
              {
                INTERVAL   = map(analogRead(intervalPin),0,1023,800,50000);               //800=16ms          // adjust all maps according to
                pwmMax     = map(analogRead(pwmMaxPin),0,1023,100,255);                    // circuit layout & potentiomenters
                ramplength = map(analogRead(ramplengthPin),0,1023,4,5800);     //5800=24ms          // adjust map for packetcount
                ramplengthpause==(ramplength/2);  
              }
              while(micros()-delayStartTime<=INTERVAL);
              digitalWrite(outPin,HIGH); 
         }                        
         
         StartUs=micros();         //loose control of pwmMaxPin // ramplenghtPin & intervalPin works      // with int Dir=2; min 4ms
  }                                 // All three work!!!! but....now Triangle wave!!!!!                   // with int static Dir=1; 
  
}

I might have to incorporate another do/while(micros()) function with this piece of code:

 if(Pwm==pwmMax)
        {
          digitalWrite(outPin,LOW);
          delay(ramplengthpause);
        }

because the minimum pwmMax ramp length is just over 6ms and I need 3-4ms. Not sure if it will help but I'll try tomorrow.

Thanks for the advice, and yes I did learn a lot from this code..... PM me and I'll buy you a beer.
take care, peace
lost_bro