ESP32 Websocket problem

[Andykun233]

Hi, I'm trying use ESP32 to send the BT&ET temp via websocket, and this is part what im code:

if (command == "getBT")
{
root["id"] = ln_id;
data["BT"] = temperature_data.BT_AvgTemp;
}
else if (command == "getET")
{
root["id"] = ln_id;
data["ET"] = temperature_data.ET_AvgTemp;
}
else if (command == "getData")
{
root["id"] = ln_id;
data["BT"] = temperature_data.BT_AvgTemp;
data["ET"] = temperature_data.ET_AvgTemp;
}

And the set up in artisan:
Device -> Meter -> Websocket
Port:

After all set up, the Artisan always connect and disconnet.

[MAKOMO]

The WebSocket support is documented here. You configured to be "roasterID", but in your code fragment you are using "id". Unclear what root is exactly in your code. If could help if you would share the payload you are sending to Artisan to see where it goes wrong.

[Andykun233]

Get info from serial monitor when conneted to Aritsan Websocket and click start, I'm not connet the max6675:
ws[/websocket][44] disconnect: 0
ws[/websocket][45] connect
ws[/websocket][45] pong[0]:
ws[/websocket][45] pong[0]:
ws[/websocket][45] disconnect: 0
ws[/websocket][46] connect
ws[/websocket][46] pong[0]:
ws[/websocket][46] disconnect: 0
ws[/websocket][47] connect
ws[/websocket][47] text-message[46]: {"data":{"BT":null,"ET":null},"id":52468}
ws[/websocket][47] pong[0]:
ws[/websocket][47] disconnect: 0
ws[/websocket][48] connect
ws[/websocket][48] text-message[46]: {"data":{"BT":null,"ET":null},"id":36806}
ws[/websocket][49] connect
ws[/websocket][49] text-message[46]: {"data":{"BT":null,"ET":null},"id":24622}

[beanoccio]

<" I'm not connet the max6675:>

If they haven't connected their thermocouple and aren't sending anything to Artisan, why should Artisan maintain the connection?

The problem is that the values ​​for "BT" (Bean Temperature) and "ET" (Environmental Temperature) in the transmitted JSON string are null. This indicates that your ESP32 is unable to correctly read the temperature values ​​from the thermocouple sensors (presumably MAX6675 modules) before sending the data [1, 2].
Artisan receives the data correctly via the WebSocket (recognizable by the connect messages and the JSON format), but cannot display it because there are no valid numerical values.

[Andykun233]

I have connected it shows temp

[Andykun233]

Hi, beanoccio, my means that after I connected the Max6675
The serial monitor print out:
ws[/websocket][45] connect
ws[/websocket][45] pong[0]:
ws[/websocket][45] pong[0]:
ws[/websocket][45] disconnect: 0
ws[/websocket][46] connect
ws[/websocket][46] pong[0]:
ws[/websocket][46] disconnect: 0
ws[/websocket][47] connect
ws[/websocket][47] text-message[46]: {"data":{"BT":null,"ET":null},"id":52468}
ws[/websocket][47] pong[0]:
ws[/websocket][47] disconnect: 0
ws[/websocket][48] connect
ws[/websocket][48] text-message[46]: {"data":{"BT":null,"ET":null},"id":36806}
ws[/websocket][49] connect
ws[/websocket][49] text-message[46]: {"data":{"BT":null,"ET":null},"id":24622}

{"BT":null,"ET":null}, shows temp, but Artisan still always shows connect and disconnect.

[Andykun233]

ws-artisan.txt
And this is my Artisan Set-up

[Andykun233]

This is the part of my code:

case WS_EVT_DISCONNECT:
Serial.printf("ws[%s][%u] disconnect: %u\n", server->url(), client->id());
break;
case WS_EVT_CONNECT:
//client connected
Serial.printf("ws[%s][%u] connect\n", server->url(), client->id());
client->printf("Hello Client %u :", client->id());
client->ping();
break;
case WS_EVT_ERROR:
//error was received from the other end
Serial.printf("ws[%s][%u] error(%u): %s\n", server->url(), client->id(), ((uint16_t)arg), (char*)data);
break;
case WS_EVT_PONG:
//pong message was received (in response to a ping request maybe)
Serial.printf("ws[%s][%u] pong[%u]: %s\n", server->url(), client->id(), len, (len)?(char*)data:"");
break;
case WS_EVT_DATA:
AwsFrameInfo * info = (AwsFrameInfo*)arg;
if(info->final && info->index == 0 && info->len == len){

     Serial.printf("ws[%s][%u] %s-message[%llu]: ",
                   server->url(),
                   client->id(),
                   (info->opcode == WS_TEXT)?"text":"binary",
                   info->len);

        if(info->opcode == WS_TEXT){
                deserializeJson(doc, (char *)data);
                String command = doc["command"].as<  const char *>();
                long ln_id = doc["id"].as<long>();
                JsonObject root = doc.to<JsonObject>();
                JsonObject data = root.createNestedObject("data");
                if (command == "getBT")
                {
                    root["id"] = ln_id;
                    data["BT"] = temperature_data.BT_AvgTemp;
                }
                else if (command == "getET")
                {
                    root["id"] = ln_id;
                    data["ET"] = temperature_data.ET_AvgTemp;
                }

                else if (command == "getData")
                {
                    root["id"] = ln_id;
                    data["BT"] = temperature_data.BT_AvgTemp;
                    data["ET"] = temperature_data.ET_AvgTemp;
                }

                char buffer[200];                        // create temp buffer 200
                size_t len = serializeJson(doc, buffer); // serialize to buffer

                Serial.println(buffer);
                client->text(buffer);
            }
        }   
break;
}

}
#endif