Arduino DMX slave

dmx_slave.ino

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Project name: Arduino DMX slave
Project page: https://electronza.com/arduino-dmx-master-and-slave/
 
********************************************************************/

/*
  Example code for using the Conceptinetics DMX library with RS485 click board from Mikroelectronika
  Slave device using 4x4 RGB click and Arduino Uno
  CH1: Red
  CH2: Blue
  CH3: Green
  Ver.1.0, 2 November 2015
  http://microcontroller-projects.com

  Based on:
  Conceptinetics DMX library,
  Copyright (c) 2013 W.A. van der Meeren <danny@illogic.nl>.  All right reserved.
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 3 of the License, or (at your option) any later version.
  http://sourceforge.net/projects/dmxlibraryforar/files/

  Also inspired by:
  NeoPixel Ring simple sketch (c) 2013 Shae Erisson
  released under the GPLv3 license to match the rest of the AdaFruit NeoPixel library
  https://github.com/adafruit/Adafruit_NeoPixel
*/

#include <Conceptinetics.h>
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif

#define SLAVE_CHANNELS 3
#define RXEN_PIN       6

DMX_Slave dmx_slave ( SLAVE_CHANNELS , RXEN_PIN );

// Which pin on the Arduino is connected to the NeoPixels?
// If the 4x4 RGB click is in socket #2 the pin is A2
#define LED_PIN A2

// How many NeoPixels are attached to the Arduino?
#define NUMPIXELS 16

// the LEDs should not be drivel at full intensity
// or they will overheat
#define MAXLEVEL 150

// When we setup the NeoPixel library, we tell it how many pixels, and which pin to use to send signals.
// Note that for older NeoPixel strips you might need to change the third parameter--see the strandtest
// example for more information on possible values.
// See the explanations from the Adafruit library
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, LED_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  // Enable DMX slave interface and start recording
  dmx_slave.onReceiveComplete (OnFrameReceiveComplete);
  dmx_slave.enable ();
  // Set start address to 1, this is also the default setting
  // You can change this address at any time during the program
  dmx_slave.setStartAddress (1);

  pixels.begin(); // This initializes the NeoPixel library.
  // now we turn off the neopixels
  for(int i=0; i< NUMPIXELS;i++){
   // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
   pixels.setPixelColor(i, pixels.Color(0,0,0)); // Off.
   pixels.show(); // This sends the updated pixel color to the hardware.
  }
}

void loop() {
  // put your main code here, to run repeatedly:
}

void OnFrameReceiveComplete (unsigned short ch)
{
    // Called every time when it collected its data
    // and no interference from other interrupts
    int red;
    int blue;
    int green;
    // map(value, fromLow, fromHigh, toLow, toHigh)
    red = map ( dmx_slave.getChannelValue(1) ,0 , 255, 0, MAXLEVEL);
    blue = map ( dmx_slave.getChannelValue(2) ,0 , 255, 0, MAXLEVEL);
    green = map ( dmx_slave.getChannelValue(3) ,0 , 255, 0, MAXLEVEL);

    // now we send data to the neopixels
    for(int i=0; i< 16;i++){
     // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
     pixels.setPixelColor(i, pixels.Color(red,green,blue)); // Moderately bright green color.
     pixels.show(); // This sends the updated pixel color to the hardware.

 }
 delay(10);
}