Websocket send data from ina219 help

Using Arduino Programming Questions
#1

First I want to apologize for the mess in the code. it’s a hodge pod of different snippets :confused: I’m trying to send the ina219 data to the webpage and well Im totally lost ive watched several tutorials and well I copied some code here from it and tried to edit :frowning: please let me know in the many ways I have botched this code. Thanks :blush: I’m advanced

/*********
Rui Santos
Complete project details at ESP32 WebSocket Server: Control Outputs (Arduino IDE) | Random Nerd Tutorials
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
*********/

// Import required libraries
#include <WiFi.h>
#include <AsyncTCP.h>
#include <ESPAsyncWebServer.h>
#include <Adafruit_INA219.h>

Adafruit_INA219 ina219;

// Replace with your network credentials
const char* ssid = "waGgs";
const char* password = "wfk#r";

bool ledState = 0;
const int ledPin = 19;

// Create AsyncWebServer object on port 80
AsyncWebServer server(80);
AsyncWebSocket ws("/ws");

const char index_html[] PROGMEM = R"rawliteral(

Topward 3603D Server html { font-family: Arial, Helvetica, sans-serif; text-align: center; } h1 { font-size: 1.8rem; color: white; } h2{ font-size: 1.5rem; font-weight: bold; color: #778899; } .topnav { overflow: hidden; background-color: #143642; } body { margin: 0; } .content { padding: 30px; max-width: 600px; margin: 0 auto; } .card { background-color: #F8F7F9;; box-shadow: 2px 2px 12px 1px rgba(140,140,140,.5); padding-top:10px; padding-bottom:20px; } .button { padding: 15px 50px; font-size: 24px; text-align: center; outline: none; color: #fff; background-color: #0f8b8d; border: none; border-radius: 5px; -webkit-touch-callout: none; -webkit-user-select: none; -khtml-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; -webkit-tap-highlight-color: rgba(0,0,0,0); } /*.button:hover {background-color: #0f8b8d}*/ .button:active { background-color: #0f8b8d; box-shadow: 2 2px #CDCDCD; transform: translateY(2px); } .state { font-size: 1.5rem; color:#8c8c8c; font-weight: bold; } Topward 3603D Server

Topward 3603D Server

Channel 1

Voltage %VOLTAGE% &Mv;C

Current %CURRENT% &Ma;

%STATE%

Output

)rawliteral";

// Replaces placeholder with INA219 values
String processor(const String& var){
//Serial.println(var);
if(var == "voltage"){
return ina219.getBusVoltage_V();
}
else if(var == "current"){
return ina219.current_mA();
}
return String();
}

void notifyClients() {
ws.textAll(String(ledState));
}

void handleWebSocketMessage(void *arg, uint8_t data, size_t len) {
AwsFrameInfo info = (AwsFrameInfo)arg;
if (info->final && info->index == 0 && info->len == len && info->opcode == WS_TEXT) {
data[len] = 0;
if (strcmp((char)data, "toggle") == 0) {
ledState = !ledState;
notifyClients();
}
}
}

void onEvent(AsyncWebSocket *server, AsyncWebSocketClient *client, AwsEventType type,
void *arg, uint8_t *data, size_t len) {
switch (type) {
case WS_EVT_CONNECT:
Serial.printf("WebSocket client #%u connected from %s\n", client->id(), client->remoteIP().toString().c_str());
break;
case WS_EVT_DISCONNECT:
Serial.printf("WebSocket client #%u disconnected\n", client->id());
break;
case WS_EVT_DATA:
handleWebSocketMessage(arg, data, len);
break;
case WS_EVT_PONG:
case WS_EVT_ERROR:
break;
}
}

void initWebSocket() {
ws.onEvent(onEvent);
server.addHandler(&ws);
}

String processor(const String& var){
Serial.println(var);
if(var == "STATE"){
if (ledState){
return "ON";
}
else{
return "OFF";
}
}
}

void setup(){
// Serial port for debugging purposes
Serial.begin(115200);

IAN219.begin();

pinMode(ledPin, OUTPUT);
digitalWrite(ledPin, LOW);

// Connect to Wi-Fi
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi..");
}

// Print ESP Local IP Address
Serial.println(WiFi.localIP());

initWebSocket();

// Route for root / web page
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
request->send_P(200, "text/html", index_html, processor);
});
server.on("/voltage", HTTP_GET, [](AsyncWebServerRequest *request){
request->send_P(200, "text/plain", busvoltage().c_str());
});
server.on("/current", HTTP_GET, [](AsyncWebServerRequest *request){
request->send_P(200, "text/plain", current().c_str());
});

// Start server
server.begin();
}

void loop() {
ws.cleanupClients();
digitalWrite(ledPin, ledState);
float parameter = 12.12; // floating number
String myStringe = ""; // empty string
myString.concat(parameter);
}

#2

Hello, do yourself a favour and please read How to get the best out of this forum and modify your post accordingly (including code tags and necessary documentation of your ask).

#3

Ok I added the code tags. I’m trying to accomplish something like /This with ina219

#4

hum... look again...

#5 

/*********
  Rui Santos
  Complete project details at https://RandomNerdTutorials.com/esp32-websocket-server-arduino/
  The above copyright notice and this permission notice shall be included in all
  copies or substantial portions of the Software.
*********/

// Import required libraries
#include <WiFi.h>
#include <AsyncTCP.h>
#include <ESPAsyncWebServer.h>
#include <Adafruit_INA219.h>

Adafruit_INA219 ina219;

// Replace with your network credentials
const char* ssid = "waGgs";
const char* password = "wfk#r";

bool ledState = 0;
const int ledPin = 19;

// Create AsyncWebServer object on port 80
AsyncWebServer server(80);
AsyncWebSocket ws("/ws");

const char index_html[] PROGMEM = R"rawliteral(
<!DOCTYPE HTML><html>
<head>
  <title>Topward 3603D Server</title>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="icon" href="data:,">
  <style>
  html {
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
  }
  h1 {
    font-size: 1.8rem;
    color: white;
  }
  h2{
    font-size: 1.5rem;
    font-weight: bold;
    color: #778899;
  }
  .topnav {
    overflow: hidden;
    background-color: #143642;
  }
  body {
    margin: 0;
  }
  .content {
    padding: 30px;
    max-width: 600px;
    margin: 0 auto;
  }
  .card {
    background-color: #F8F7F9;;
    box-shadow: 2px 2px 12px 1px rgba(140,140,140,.5);
    padding-top:10px;
    padding-bottom:20px;
  }
  .button {
    padding: 15px 50px;
    font-size: 24px;
    text-align: center;
    outline: none;
    color: #fff;
    background-color: #0f8b8d;
    border: none;
    border-radius: 5px;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: rgba(0,0,0,0);
   }
   /*.button:hover {background-color: #0f8b8d}*/
   .button:active {
     background-color: #0f8b8d;
     box-shadow: 2 2px #CDCDCD;
     transform: translateY(2px);
   }
   .state {
     font-size: 1.5rem;
     color:#8c8c8c;
     font-weight: bold;
   }
  </style>
<title>Topward 3603D Server</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" href="data:,">
</head>
<body>
  <div class="topnav">
    <h1>Topward 3603D Server</h1>
  </div>
  <div class="content">
    <div class="card">
      <h2>Channel 1 </h2>
       <p>
    <i class="fas fa-thermometer-half" style="color:#059e8a;"></i> 
    <span class="dht-labels">Voltage</span> 
    <span id="voltage">%VOLTAGE%</span>
    <sup class="units">&Mv;C</sup>
  </p>
  <p>
    <i class="fas fa-tint" style="color:#00add6;"></i> 
    <span class="dht-labels">Current</span>
    <span id="current">%CURRENT%</span>
    <sup class="units">&Ma;</sup>
  </p>
      <p class="state"> <span id="state">%STATE%</span></p>
      <p><button id="button" class="button">Output</button></p>
    </div>
  </div>
<script>
setInterval(function ( ) {
  var xhttp = new XMLHttpRequest();
  xhttp.onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
      document.getElementById("voltage").innerHTML = this.responseText;
    }
  };
  xhttp.open("GET", "/ina219.getBusVoltage_V", true);
  xhttp.send();
}, 10000 ) ;

setInterval(function ( ) {
  var xhttp = new XMLHttpRequest();
  xhttp.onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
      document.getElementById("current").innerHTML = this.responseText;
    }
  };
  xhttp.open("GET", "/ina219.getCurrent_mA", true);
  xhttp.send();
}, 10000 ) ;
  var gateway = `ws://${window.location.hostname}/ws`;
  var websocket;
  window.addEventListener('load', onLoad);
  function initWebSocket() {
    console.log('Trying to open a WebSocket connection...');
    websocket = new WebSocket(gateway);
    websocket.onopen    = onOpen;
    websocket.onclose   = onClose;
    websocket.onmessage = onMessage; // <-- add this line
  }
  function onOpen(event) {
    console.log('Connection opened');
  }
  function onClose(event) {
    console.log('Connection closed');
    setTimeout(initWebSocket, 2000);
  }
  function onMessage(event) {
    var state;
    if (event.data == "1"){
      state = "ON";
    }
    else{
      state = "OFF";
    }
    document.getElementById('state').innerHTML = state;
  }
  function onLoad(event) {
    initWebSocket();
    initButton();
  }
  function initButton() {
    document.getElementById('button').addEventListener('click', toggle);
  }
  function toggle(){
    websocket.send('toggle');
  }
</script>

</body>
</html>
)rawliteral";

// Replaces placeholder with INA219 values
String processor(const String& var){
  //Serial.println(var);
  if(var == "voltage"){
    return ina219.getBusVoltage_V();
  }
  else if(var == "current"){
    return ina219.current_mA();
  }
  return String();
}


void notifyClients() {
  ws.textAll(String(ledState));
}

void handleWebSocketMessage(void *arg, uint8_t *data, size_t len) {
  AwsFrameInfo *info = (AwsFrameInfo*)arg;
  if (info->final && info->index == 0 && info->len == len && info->opcode == WS_TEXT) {
    data[len] = 0;
    if (strcmp((char*)data, "toggle") == 0) {
      ledState = !ledState;
      notifyClients();
    }
  }
}

void onEvent(AsyncWebSocket *server, AsyncWebSocketClient *client, AwsEventType type,
             void *arg, uint8_t *data, size_t len) {
  switch (type) {
    case WS_EVT_CONNECT:
      Serial.printf("WebSocket client #%u connected from %s\n", client->id(), client->remoteIP().toString().c_str());
      break;
    case WS_EVT_DISCONNECT:
      Serial.printf("WebSocket client #%u disconnected\n", client->id());
      break;
    case WS_EVT_DATA:
      handleWebSocketMessage(arg, data, len);
      break;
    case WS_EVT_PONG:
    case WS_EVT_ERROR:
      break;
  }
}

void initWebSocket() {
  ws.onEvent(onEvent);
  server.addHandler(&ws);
}

String processor(const String& var){
  Serial.println(var);
  if(var == "STATE"){
    if (ledState){
      return "ON";
    }
    else{
      return "OFF";
    }
  }
}

void setup(){
  // Serial port for debugging purposes
  Serial.begin(115200);

  IAN219.begin();

  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, LOW);
  
  // Connect to Wi-Fi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi..");
  }

  // Print ESP Local IP Address
  Serial.println(WiFi.localIP());

  initWebSocket();

  // Route for root / web page
  server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send_P(200, "text/html", index_html, processor);
  });
    server.on("/voltage", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send_P(200, "text/plain", busvoltage().c_str());
  });
  server.on("/current", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send_P(200, "text/plain", current().c_str());
  });

  // Start server
  server.begin();
}

void loop() {
  ws.cleanupClients();
  digitalWrite(ledPin, ledState);
  float parameter = 12.12; // floating number
    String myStringe = "";     // empty string
    myString.concat(parameter);
}
#6

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