/*********************************************************
* LED Strip Demo with Stepper Motor
* Written by Andy Weese 
* March 21, 2023
*********************************************************/

//add libraries for nonblocking timing and LED control
#include <elapsedMillis.h>
#include <FastLED.h>
#include <AccelStepper.h>

#define MotorInterfaceType 4

//assign LED pin and number of LEDs
const int LED_PIN = 7;
const int NUM_LEDS = 100;

//set amount of time diffrent patterns will be held
unsigned long time_slide = 5;

CRGB leds[NUM_LEDS];  // tells LED library number of LEDs on strip
elapsedMillis LEDms;  // sets up timer for use with the LEDs
AccelStepper stepMtr(MotorInterfaceType, 8, 10, 9, 11); //pin definitions for IN1-IN3-IN2-IN4

void setup() {
  FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);
  stepMtr.setMaxSpeed(1000.0);
	stepMtr.setAcceleration(50.0);
	stepMtr.setSpeed(200);
	stepMtr.moveTo(2038);
}

void loop() {


  moveMotor();  // move the motor
  

  FastLED.setBrightness(50);  // sets/resets LED brightness each loop
  colorsrand(255,0,0,100);
  colorsrand(255,255,0,100);
  colorsrand(0,255,0,100);
  colorsrand(0,255,255,100);
  colorsrand(0,0,255,100);


}

// the function for the random LED lighting
void colorsrand(int redval, int greenval, int blueval, int lednum){
  for (int i = 0; i < lednum; i++){
    if (LEDms > time_slide){
      leds[i] = CRGB(redval, greenval, blueval);
      FastLED.show();
      LEDms = 0;
    }
  // resets LED timer each time while loop is exited and in the for loop lights led # that i is currently at
  }
}

// the function to move the motor
void moveMotor(){
  if (stepMtr.distanceToGo() == 0) {  // check if it's time to change direction
    stepMtr.moveTo(-stepMtr.currentPosition());
  }
  stepMtr.run(); // move the motor one step
}