/*
  Forum: https://forum.arduino.cc/t/arduino-uno-ledstrip-issue/1400615
  Wokwi: https://wokwi.com/projects/423791454389927937

  Changes done to original sketch:

  * const int Channel is outcommented - not used here
  * NUM_CHAN set to 51
  * NUM_LEDS equals NUm_CHAN so that a change of NUM_CHAN also changes NUM_LEDS
  * //DMX[i]= (recv.dmx(Channel[i])); outcommented and replaced by  DMX[i]= random(0,256);
  * Led.show(); has been moved outside the for-loop;  makes sense to call show after all changes are done
  * Added delay(100) in loop to slow down the color changes

  Effect found:

  * works for up to 51 channels/leds
  * does not work for 52 or more

*/

#include "Ethernet.h"
#include "sACN.h"
#include "Adafruit_NeoPixel.h"

//Setup Ethernet
uint8_t mac[] = {0x90, 0xA2, 0xDA, 0x10, 0x14, 0x48}; 
IPAddress ip(169, 254, 89, 67); 
IPAddress dns(169, 254, 89, 1); 
IPAddress gateway(169, 254, 89, 1); 
IPAddress subnet(255, 255, 0, 0); 

//Setup sACN
EthernetUDP sacn;
Receiver recv(sacn);
const int Universe= 32;
const int NUM_CHAN= 51;
//const int Channel[NUM_CHAN]= {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36};
int DMX[NUM_CHAN];

//Setup LED
const int DATA_PIN= 7;
const int NUM_LEDS= NUM_CHAN;
Adafruit_NeoPixel Led(NUM_LEDS, DATA_PIN, NEO_GRB + NEO_KHZ800);

// Define colours
#define On 255,75,0
#define Off 0,65,255
#define Other 255,0,0
#define None  0,0,0
int Brightness=100;


void setup() {
	Serial.begin(9600);
  Ethernet.begin(mac, ip, dns, gateway, subnet);
 	recv.begin(Universe);
  Led.begin();
  Led.clear();
  Led.show();
  Led.setBrightness(Brightness);
 	}

void loop() {
	recv.update();

  for (int i=0; i<NUM_CHAN; i++){
    // Read Channel input, Write to DMX value
    //DMX[i]= (recv.dmx(Channel[i]));
    DMX[i]= random(0,256);
    //Apply values to Leds
    if (DMX[i]> 127){
      Led.setPixelColor(i, Led.Color(On));
    } else {
      Led.setPixelColor(i, Led.Color(Off));
      } 
  }
  Led.show();
  delay(100);
}