72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
#include <SPI.h>
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#include <Ethernet.h>
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#include <EthernetUdp.h>
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#include "Adafruit_NeoPixel.h"
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#define PIN 6
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#define WIDTH 16
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#define HEIGHT 16
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#define UDP_PACKET_MAX_SIZE 768
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#define PIXEL_OFFSET 0x80
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// Parameter 1 = number of pixels in strip
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// Parameter 2 = pin number (most are valid)
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// Parameter 3 = pixel type flags, add together as needed:
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// NEO_RGB Pixels are wired for RGB bitstream
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// NEO_GRB Pixels are wired for GRB bitstream
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// NEO_KHZ400 400 KHz bitstream (e.g. FLORA pixels)
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// NEO_KHZ800 800 KHz bitstream (e.g. High Density LED strip)
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Adafruit_NeoPixel strip = Adafruit_NeoPixel(WIDTH * HEIGHT, PIN, NEO_GRB + NEO_KHZ800);
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// Network configuration
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byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
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IPAddress ip(172, 22, 239, 182);
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unsigned int localPort = 8888;
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// buffers for receiving and sending data
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char packetBuffer[UDP_PACKET_MAX_SIZE]; // buffer to hold incoming packet
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// Create EthernetUdp instance to send and receive packets over UDP
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EthernetUDP Udp;
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void setup() {
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// initialize ethernet device
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Ethernet.begin(mac, ip);
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// Start UDP
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Udp.begin(localPort);
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strip.begin();
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// Initialize all pixels to 'off'
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for (int i=0; i<256; i++) {
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strip.setPixelColor(i, strip.Color(0, 0, 0));
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}
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strip.show();
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Serial.begin(115200);
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Serial.println("Ready.");
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}
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void loop() {
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// if there is data available, read a packet
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int packetSize = Udp.parsePacket();
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if (packetSize) {
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// read the packet into packet buffer
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Udp.read(packetBuffer, UDP_PACKET_MAX_SIZE);
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Serial.println("Received packet:");
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Serial.print("Length: ");
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Serial.println(packetSize);
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// assume an incoming uncompressed BMP image
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// assume we know the pixels start at offset 54
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for (int i = 0; i < packetSize; i = i + 3) {
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Serial.print(packetBuffer[i], HEX);
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Serial.print(packetBuffer[i+1], HEX);
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Serial.print(packetBuffer[i+2], HEX);
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Serial.print(" ");
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strip.setPixelColor(i / 3, packetBuffer[i], packetBuffer[i+1], packetBuffer[i+2]);
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}
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Serial.print("\n");
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strip.show();
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}
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}
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