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Broadcasting Your Voice with ESP32-S3 & INMP441

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This commit is contained in:
Eric
2023-05-16 15:15:24 -07:00
parent ea26810ea0
commit de2b756bd6
7 changed files with 1227 additions and 0 deletions
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133
ESP32_MICROPHONE/Broadcasting_Your_Voice/ESP32-S3_INMP441_WebSocket_Client/ESP32-S3_INMP441_WebSocket_Client.ino Normal file
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/////////////////////////////////////////////////////////////////
/*
Broadcasting Your Voice with ESP32-S3 & INMP441
For More Information: https://youtu.be/qq2FRv0lCPw
Created by Eric N. (ThatProject)
*/
/////////////////////////////////////////////////////////////////
/*
- Device
ESP32-S3 DevKit-C
https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/hw-reference/esp32s3/user-guide-devkitc-1.html
- Required Library
Arduino ESP32: 2.0.9
Arduino Websockets: 0.5.3
https://github.com/gilmaimon/ArduinoWebsockets
*/
#include <driver/i2s.h>
#include <WiFi.h>
#include <ArduinoWebsockets.h>
#define I2S_SD 10
#define I2S_WS 11
#define I2S_SCK 12
#define I2S_PORT I2S_NUM_0
#define bufferCnt 10
#define bufferLen 1024
int16_t sBuffer[bufferLen];
const char* ssid = "<YOUR_WIFI_SSID>";
const char* password = "<YOUR_WIFI_PW>";
const char* websocket_server_host = "<WEBSOCKET_SERVER_HOST_IP>";
const uint16_t websocket_server_port = 8888; // <WEBSOCKET_SERVER_PORT>
using namespace websockets;
WebsocketsClient client;
bool isWebSocketConnected;
void onEventsCallback(WebsocketsEvent event, String data) {
if (event == WebsocketsEvent::ConnectionOpened) {
Serial.println("Connnection Opened");
isWebSocketConnected = true;
} else if (event == WebsocketsEvent::ConnectionClosed) {
Serial.println("Connnection Closed");
isWebSocketConnected = false;
} else if (event == WebsocketsEvent::GotPing) {
Serial.println("Got a Ping!");
} else if (event == WebsocketsEvent::GotPong) {
Serial.println("Got a Pong!");
}
}
void i2s_install() {
// Set up I2S Processor configuration
const i2s_config_t i2s_config = {
.mode = i2s_mode_t(I2S_MODE_MASTER | I2S_MODE_RX),
.sample_rate = 44100,
//.sample_rate = 16000,
.bits_per_sample = i2s_bits_per_sample_t(16),
.channel_format = I2S_CHANNEL_FMT_ONLY_LEFT,
.communication_format = i2s_comm_format_t(I2S_COMM_FORMAT_STAND_I2S),
.intr_alloc_flags = 0,
.dma_buf_count = bufferCnt,
.dma_buf_len = bufferLen,
.use_apll = false
};
i2s_driver_install(I2S_PORT, &i2s_config, 0, NULL);
}
void i2s_setpin() {
// Set I2S pin configuration
const i2s_pin_config_t pin_config = {
.bck_io_num = I2S_SCK,
.ws_io_num = I2S_WS,
.data_out_num = -1,
.data_in_num = I2S_SD
};
i2s_set_pin(I2S_PORT, &pin_config);
}
void setup() {
Serial.begin(115200);
connectWiFi();
connectWSServer();
xTaskCreatePinnedToCore(micTask, "micTask", 10000, NULL, 1, NULL, 1);
}
void loop() {
}
void connectWiFi() {
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
}
void connectWSServer() {
client.onEvent(onEventsCallback);
while (!client.connect(websocket_server_host, websocket_server_port, "/")) {
delay(500);
Serial.print(".");
}
Serial.println("Websocket Connected!");
}
void micTask(void* parameter) {
i2s_install();
i2s_setpin();
i2s_start(I2S_PORT);
size_t bytesIn = 0;
while (1) {
esp_err_t result = i2s_read(I2S_PORT, &sBuffer, bufferLen, &bytesIn, portMAX_DELAY);
if (result == ESP_OK && isWebSocketConnected) {
client.sendBinary((const char*)sBuffer, bytesIn);
}
}
}

128
ESP32_MICROPHONE/Broadcasting_Your_Voice/wsAudioServer/audio_client.html Normal file
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<html>
<head>
<title>PCM Player</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href='http://fonts.googleapis.com/css?family=Roboto' rel='stylesheet' type='text/css'>
<link rel="icon" href="image/favicon.ico" type="image/x-icon">
<script src="https://cdn.jsdelivr.net/npm/darkmode-js@1.5.7/lib/darkmode-js.min.js"></script>
<script src="https://cdn.plot.ly/plotly-latest.min.js" charset="utf-8"></script>
<script src="https://unpkg.com/pcm-player"></script>
<script type="js/worker.js"></script>
</head>
<style>
body {
font-family: 'Roboto', sans-serif;
}
.button {
border: none;
padding: 15px 32px;
text-align: center;
text-decoration: none;
display: inline-block;
font-size: 16px;
margin: 4px 2px;
cursor: pointer;
}
</style>
<body>
<h1>ESP32-S3 + I²S Digital Microphone</h1>
<p>Connect to WebSocket by pressing the [Connect] button first!</p>
<button id="connectBtn" class="button" onclick="connect()">Connect</button>
<input type="range" max="1" value="0.5" min="0" id="range" onchange="changeVolume(event)" step="0.1"><br />
<button id="pauseBtn" class="button" onclick="pause()">Pause Playing</button>
<button id="continueBtn" class="button" onclick="continuePlay()">Continue Playing</button>
<div id="graph"></div>
<script>
function addDarkmodeWidget() {
new Darkmode().showWidget();
}
window.addEventListener('load', addDarkmodeWidget);
var connectBtn = document.getElementById("connectBtn");
var pauseBtn = document.getElementById("pauseBtn");
var continueBtn = document.getElementById("continueBtn");
connectBtn.disabled = false;
pauseBtn.disabled = true;
continueBtn.disabled = true;
var worker = new Worker('js/worker.js')
worker.addEventListener('message', function (e) {
graphDataArray = graphDataArray.concat(e.data)
graphDataArray.splice(0, 1)
var data_update = {
y: [graphDataArray]
};
Plotly.update('graph', data_update)
}, false);
const arrayLength = 100
var graphDataArray = []
for (var i = 0; i < arrayLength; i++) {
graphDataArray[i] = 0;
}
var layout = {
title: 'Streaming Data',
paper_bgcolor: "#000",
plot_bgcolor: "#000",
xaxis: {
domain: [0, 1],
showticklabels: false,
color: "#FFF",
},
yaxis: { domain: [0, 1],
color: "#FFF",
rangemode: "auto",
},
}
Plotly.newPlot('graph', [{
y: graphDataArray,
mode: 'lines',
line: { color: '#DF56F1' }
}], layout);
let player;
window.connect = function connect() {
connectBtn.disabled = !connectBtn.disabled;
pauseBtn.disabled = !pauseBtn.disabled;
player = new PCMPlayer({
inputCodec: 'Int16',
channels: 1,
//sampleRate: 16000,
sampleRate: 44100,
});
const WS_URL = 'ws:///<HOST_IP>:<Port>'
var ws = new WebSocket(WS_URL)
ws.binaryType = 'arraybuffer'
ws.addEventListener('message', function (event) {
if(continueBtn.disabled){
player.feed(event.data)
worker.postMessage(event.data) // Remove if it makes the web browser slow.
}
});
}
window.changeVolume = function changeVolume(e) {
player.volume(document.querySelector('#range').value)
}
window.pause = async function pause() {
pauseBtn.disabled = true;
continueBtn.disabled = false;
await player.pause()
}
window.continuePlay = function continuePlay() {
player.continue()
pauseBtn.disabled = false;
continueBtn.disabled = true;
}
</script>
</body>
</html>

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ESP32_MICROPHONE/Broadcasting_Your_Voice/wsAudioServer/image/favicon.ico Executable file
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ESP32_MICROPHONE/Broadcasting_Your_Voice/wsAudioServer/js/worker.js Normal file
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// worker.js
self.addEventListener('message', function (e) {
var mean = 0;
var samples_read = e.data.byteLength / 8;
if (samples_read > 0) {
var byteArray = new Int16Array(e.data);
for (var i = 0; i < samples_read; ++i) {
mean += (byteArray[i]);
}
mean /= samples_read;
self.postMessage(mean);
}
});

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ESP32_MICROPHONE/Broadcasting_Your_Voice/wsAudioServer/package-lock.json generated Normal file
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{
"name": "wsAudioServer",
"version": "1.0.0",
"lockfileVersion": 2,
"requires": true,
"packages": {
"": {
"name": "wsAudioServer",
"version": "1.0.0",
"license": "ISC",
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"express": "^4.17.1",
"ws": "^7.2.0"
}
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16
ESP32_MICROPHONE/Broadcasting_Your_Voice/wsAudioServer/package.json Normal file
View File

@@ -0,0 +1,16 @@
{
"name": "wsAudioServer",
"version": "1.0.0",
"description": "",
"main": "server.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"keywords": [],
"author": "Eric Nam",
"license": "ISC",
"dependencies": {
"express": "^4.17.1",
"ws": "^7.2.0"
}
}

48
ESP32_MICROPHONE/Broadcasting_Your_Voice/wsAudioServer/server.js Normal file
View File

@@ -0,0 +1,48 @@
/////////////////////////////////////////////////////////////////
/*
Broadcasting Your Voice with ESP32-S3 & INMP441
For More Information: https://youtu.be/qq2FRv0lCPw
Created by Eric N. (ThatProject)
*/
/////////////////////////////////////////////////////////////////
const path = require("path");
const express = require("express");
const WebSocket = require("ws");
const app = express();
const WS_PORT = process.env.WS_PORT || 8888;
const HTTP_PORT = process.env.HTTP_PORT || 8000;
const wsServer = new WebSocket.Server({ port: WS_PORT }, () =>
console.log(`WS server is listening at ws://localhost:${WS_PORT}`)
);
// array of connected websocket clients
let connectedClients = [];
wsServer.on("connection", (ws, req) => {
console.log("Connected");
// add new connected client
connectedClients.push(ws);
// listen for messages from the streamer, the clients will not send anything so we don't need to filter
ws.on("message", (data) => {
connectedClients.forEach((ws, i) => {
if (ws.readyState === ws.OPEN) {
ws.send(data);
} else {
connectedClients.splice(i, 1);
}
});
});
});
// HTTP stuff
app.use("/image", express.static("image"));
app.use("/js", express.static("js"));
app.get("/audio", (req, res) =>
res.sendFile(path.resolve(__dirname, "./audio_client.html"))
);
app.listen(HTTP_PORT, () =>
console.log(`HTTP server listening at http://localhost:${HTTP_PORT}`)
);