I join below the content of the main file, just 111 lines. It's
very easy to control the led strip from arduino. Contrary to the
comments , it seems I modified the code to use Adafruit DotStar
library instead of NeoPixel library. I made the arduino part and
the system was used for a show through the software Madmapper on
Apple, connected to the arduino through the Artnet protocol other
Ethernet. I took my last version of the code, I'm relatively
confident it's the good one.
================
#include <Adafruit_DotStar.h> /* This example will receive multiple universes via Artnet and control a strip of ws2811 leds via Adafruit's NeoPixel library: https://github.com/adafruit/Adafruit_NeoPixel This example may be copied under the terms of the MIT license, see the LICENSE file for details */
#include <Artnet.h>
#include <Ethernet.h>
#include <EthernetUdp.h>
#include <SPI.h>
// Neopixel settings
const int numLeds = 60; // change for your setup
const int numberOfChannels = numLeds * 3; // Total number of channels you want to receive (1 led = 3 channels)
#define DATAPIN 4
#define CLOCKPIN 5
Adafruit_DotStar leds = Adafruit_DotStar(numLeds, DATAPIN, CLOCKPIN, DOTSTAR_BRG);
// Artnet settings
Artnet artnet;
const int startUniverse = 1; // CHANGE FOR YOUR SETUP most software this is 1, some software send out artnet first universe as 0.
// Check if we got all universes
const int maxUniverses = numberOfChannels / 512 + ((numberOfChannels % 512) ? 1 : 0);
bool universesReceived[maxUniverses];
bool sendFrame = 1;
int previousDataLength = 0;
// Change ip and mac address for your setup
byte ip[] = {192, 168, 1, 57};
byte mac[] = {0x04, 0xE9, 0xE5, 0x00, 0x69, 0xEC};
byte broadcast[] = {10, 0, 1, 255};
void setup()
{
//Serial.begin(115200);
artnet.begin(mac, ip);
leds.begin();
artnet.setBroadcast(broadcast);
initTest();
// this will be called for each packet received
artnet.setArtDmxCallback(onDmxFrame);
}
void loop()
{
// we call the read function inside the loop
artnet.read();
}
void onDmxFrame(uint16_t universe, uint16_t length, uint8_t sequence, uint8_t* data, IPAddress remoteIP)
{
sendFrame = 1;
// set brightness of the whole strip
if (universe == 15)
{
leds.setBrightness(data[0]);
leds.show();
}
// Store which universe has got in
if ((universe - startUniverse) < maxUniverses)
universesReceived[universe - startUniverse] = 1;
for (int i = 0 ; i < maxUniverses ; i++)
{
if (universesReceived[i] == 0)
{
//Serial.println("Broke");
sendFrame = 0;
break;
}
}
// read universe and put into the right part of the display buffer
for (int i = 0; i < length / 3; i++)
{
int led = i + (universe - startUniverse) * (previousDataLength / 3);
if (led < numLeds)
leds.setPixelColor(led, data[i * 3], data[i * 3 + 1], data[i * 3 + 2]);
}
previousDataLength = length;
if (sendFrame)
{
leds.show();
// Reset universeReceived to 0
memset(universesReceived, 0, maxUniverses);
}
}
void initTest()
{
for (int i = 0 ; i < numLeds ; i++)
leds.setPixelColor(i, 127, 0, 0);
leds.show();
delay(500);
for (int i = 0 ; i < numLeds ; i++)
leds.setPixelColor(i, 0, 127, 0);
leds.show();
delay(500);
for (int i = 0 ; i < numLeds ; i++)
leds.setPixelColor(i, 0, 0, 127);
leds.show();
delay(500);
for (int i = 0 ; i < numLeds ; i++)
leds.setPixelColor(i, 0, 0, 0);
leds.show();
}
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