audio-reactive-led-strip/arduino/ws2812_controller/ws2812_controller.ino

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#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <WebSocketsServer.h>
#include <Hash.h>
#include <WiFiUdp.h>
#include "ws2812_i2s.h"
// Set this to the number of LEDs in your LED strip
#define NUM_LEDS 60
// Maximum number of packets to hold in the buffer. Don't change this.
#define BUFFER_LEN 1024
// Wifi and socket settings
const char* ssid = "YOUR_WIFI_SSID";
const char* password = "YOUR_WIFI_PASSWORD";
unsigned int localPort = 7777;
char packetBuffer[BUFFER_LEN];
// LED strip
static WS2812 ledstrip;
static Pixel_t pixels[NUM_LEDS];
WiFiUDP port;
// Network information
// IP must match the IP in config.py
IPAddress ip(192, 168, 0, 150);
// Set gateway to your router's gateway
IPAddress gateway(192, 168, 0, 1);
IPAddress subnet(255, 255, 255, 0);
void setup() {
Serial.begin(115200);
WiFi.config(ip, gateway, subnet);
WiFi.begin(ssid, password);
Serial.println("");
// Connect to wifi and print the IP address over serial
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
port.begin(localPort);
ledstrip.init(NUM_LEDS);
pinMode(0, OUTPUT);
}
uint8_t N = 0;
void loop() {
// Read data over socket
int packetSize = port.parsePacket();
// If packets have been received, interpret the command
if (packetSize) {
digitalWrite(0, 1);
int len = port.read(packetBuffer, BUFFER_LEN);
for(int i = 0; i < len; i+=4){
packetBuffer[len] = 0;
N = packetBuffer[i];
pixels[N].R = (uint8_t)packetBuffer[i+1];
pixels[N].G = (uint8_t)packetBuffer[i+2];
pixels[N].B = (uint8_t)packetBuffer[i+3];
}
ledstrip.show(pixels);
digitalWrite(0, 0);
}
}