crees
Well-known member
Hi Group
I am working on E1.31 DMX and needs some help getting it fine tuned. I currently have 6 universes working on it but trying to at least double that and more.
Here is the code so far (sloppy, hacked up, needs improvement, be kind
) What I need help with is how to process the ethernet packet buffer better to get all desired universes. In my serial out inside the LED send loop I get 6 universes consistently. anything over is hit or miss. universe 7 is about once per second and 8 is every few seconds.
I have ethernet set to 1 socket at 24Mhz. I am using the wiz820io .
I am working on E1.31 DMX and needs some help getting it fine tuned. I currently have 6 universes working on it but trying to at least double that and more.
Here is the code so far (sloppy, hacked up, needs improvement, be kind
) What I need help with is how to process the ethernet packet buffer better to get all desired universes. In my serial out inside the LED send loop I get 6 universes consistently. anything over is hit or miss. universe 7 is about once per second and 8 is every few seconds. I have ethernet set to 1 socket at 24Mhz. I am using the wiz820io .
Code:
// E1.31 Receiver and pixel controller by Andrew Huxtable (andrew@hux.net.au)
// This code may be freely distributed and used as you see fit for non-profit
// purposes and as long as the original author is credited and it remains open
// source
#include <SPI.h>
#include <Ethernet.h>
#include <EthernetUdp.h>
#define USE_OCTOWS2811
#include<OctoWS2811.h>
#include<FastLED.h>
//*********************************************************************************
// enter desired universe and subnet (sACN first universe is 1)
#define DMX_SUBNET 0
#define DMX_UNIVERSE 1 //**Start** universe
// Set a different MAC address for each...
byte mac[] = { 0x74, 0x69, 0x69, 0x2D, 0x30, 0x15 };
// Uncomment if you want to use static IP
//*******************************************************
// ethernet interface ip address
IPAddress ip(192, 168, 2, 21); //IP address of ethernet shield
//*******************************************************
EthernetUDP Udp;
// By sacrificing some of the Ethernet receive buffer, we can allocate more to the LED array
// but this is **technically** slower because 2 packets must be processed for all 240 pixels.
/// DONT CHANGE unless you know the consequences...
#define ETHERNET_BUFFER 540 //540
#define CHANNEL_COUNT 4080 //because it divides by 3 nicely
#define NUM_LEDS 1360 // can not go higher than this - Runs out of SRAM
#define NUM_LEDS_PER_STRIP 170
#define NUM_STRIPS 8
#define UNIVERSE_COUNT 7
#define LEDS_PER_UNIVERSE 170
//#define BRIGHTNESS 100
//********************************************************************************
// Define the array of leds
CRGB leds[NUM_STRIPS * NUM_LEDS_PER_STRIP];
// Pin layouts on the teensy 3:
// OctoWS2811: 2,14,7,8,6,20,21,5
unsigned char packetBuffer[ETHERNET_BUFFER];
unsigned char unidrop[UNIVERSE_COUNT + 1];
int s = 0;
void setup() {
pinMode(9, OUTPUT);
digitalWrite(9, LOW); // reset the WIZ820io
delay(10);
digitalWrite(9, HIGH); // reset the WIZ820io
//pinMode(10, OUTPUT);
// digitalWrite(10, HIGH); // de-select WIZ820io
//pinMode(4, OUTPUT);
//digitalWrite(4, HIGH); // de-select the SD Card
Serial.begin(115200);
delay(10);
// Using different LEDs or colour order? Change here...
// ********************************************************
LEDS.addLeds<OCTOWS2811>(leds, NUM_LEDS_PER_STRIP);
LEDS.setBrightness(32);
// ********************************************************
// ********************************************************
Ethernet.begin(mac,ip);
Udp.begin(5568);
// ********************************************************
Serial.print("server is at ");
Serial.println(Ethernet.localIP());
//Once the Ethernet is initialised, run a test on the LEDs
//initTest();
}
void sacnDMXReceived(unsigned char* pbuff, int count) {
if (count > CHANNEL_COUNT) count = CHANNEL_COUNT;
byte b = pbuff[113]; //DMX Subnet
if ( b == DMX_SUBNET) {
b = pbuff[114]; //DMX Universe
Serial.println(b );
if ( b >= DMX_UNIVERSE && b <= DMX_UNIVERSE + UNIVERSE_COUNT ) {
if ( pbuff[125] == 0 ) { //start code must be 0
int ledNumber = (b - DMX_UNIVERSE) * LEDS_PER_UNIVERSE;
// sACN packets come in seperate RGB but we have to set each led's RGB value together
// this 'reads ahead' for all 3 colours before moving to the next led.
//Serial.println("*");
for (int i = 126;i < 126+count;i = i + 3){
byte charValueR = pbuff[i];
byte charValueG = pbuff[i+1];
byte charValueB = pbuff[i+2];
leds[ledNumber] = CRGB(charValueR,charValueG,charValueB);
//Serial.println(ledNumber);
ledNumber++;
}
LEDS.show();
}
}
}
}
int checkACNHeaders(unsigned char* messagein, int messagelength) {
//Do some VERY basic checks to see if it's an E1.31 packet.
//Bytes 4 to 12 of an E1.31 Packet contain "ACN-E1.17"
//Only checking for the A and the 7 in the right places as well as 0x10 as the header.
//Technically this is outside of spec and could cause problems but its enough checks for us
//to determine if the packet should be tossed or used.
//This improves the speed of packet processing as well as reducing the memory overhead.
//On an Isolated network this should never be a problem....
if ( messagein[1] == 0x10 && messagein[4] == 0x41 && messagein[12] == 0x37) {
int addresscount = (byte) messagein[123] * 256 + (byte) messagein[124]; // number of values plus start code
return addresscount -1; //Return how many values are in the packet.
}
return 0;
}
void initTest() //runs at board boot to make sure pixels are working
{
LEDS.showColor(CRGB(255, 0, 0)); //turn all pixels on red
delay(1000);
LEDS.showColor(CRGB(0, 255, 0)); //turn all pixels on green
delay(1000);
LEDS.showColor(CRGB(0, 0, 255)); //turn all pixels on blue
delay(1000);
LEDS.showColor(CRGB(0, 0, 0)); //turn all pixels off
}
void loop() {
//Process packets
int packetSize = Udp.parsePacket(); //Read UDP packet count
if(packetSize){
Udp.read(packetBuffer,ETHERNET_BUFFER); //read UDP packet
int count = checkACNHeaders(packetBuffer, packetSize);
if (count) {
// Serial.println("packet");
sacnDMXReceived(packetBuffer, count); //process data function
}
}
}
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