/* This code uses the AccelStepper library to move a stepper at a constant speed
to a position  with setSpeed() and runSpeedToPosition, without acceleration and deceleration. Nonblocking???
*/

#include <AccelStepper.h>

#define step 13
#define dir  12

AccelStepper stepper(1, step, dir);

void setup(){
  stepper.setMaxSpeed(1000);

}

void loop(){
  stepper.setSpeed(200);
  stepper.moveTo(400);
  stepper.runSpeedToPosition();
}