Wi-Fi and Bluetooth BLE Connectivity on Proton AI Core

Proton AI Core’s ESP32-S3 integrates 2.4 GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5.0 with BLE support directly on the module — no external radio hardware required. This means you can stream camera images over HTTP, push sensor data to the cloud, or communicate with a mobile app over BLE, all from the same chip that runs your AI model.

Wi-Fi
Bluetooth

Connecting to Wi-Fi

The Arduino WiFi.h library included with the ESP32 board package handles connection management. Call WiFi.begin() with your network credentials and poll WiFi.status() until the connection is established.

wifi_connect.cpp

#include <WiFi.h>

const char* ssid     = "YourNetworkName";
const char* password = "YourPassword";

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);

  Serial.print("Connecting to Wi-Fi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println();
  Serial.print("Connected! IP address: ");
  Serial.println(WiFi.localIP());
}

void loop() {}

HTTP GET Request

Once connected, use the HTTPClient library to fetch data from a remote server. The library handles connection setup, request formatting, and response parsing for you.

http_get.cpp

#include <WiFi.h>
#include <HTTPClient.h>

void fetchData() {
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    http.begin("http://api.example.com/data");
    int httpCode = http.GET();
    if (httpCode > 0) {
      String payload = http.getString();
      Serial.println(payload);
    }
    http.end();
  }
}

Sending Camera Images via HTTP POST

You can combine the camera driver with HTTPClient to capture a JPEG frame and upload it directly to a server endpoint in a single function. This pattern is useful for remote monitoring, cloud-based AI processing, or building a timelapse pipeline. Grab a frame buffer with esp_camera_fb_get(), POST the raw JPEG bytes with the image/jpeg content type, then release the buffer.For a complete working sketch, see Wi-Fi Image Upload in the Examples page.

BLE Server Example

The ESP32 Arduino core includes a full BLE stack. The example below sets up Proton AI Core as a BLE peripheral that advertises a custom service and sends a notification to connected clients every two seconds.

ble_server.cpp

#include <BLEDevice.h>
#include <BLEServer.h>
#include <BLEUtils.h>
#include <BLE2902.h>

#define SERVICE_UUID        "4fafc201-1fb5-459e-8fcc-c5c9c331914b"
#define CHARACTERISTIC_UUID "beb5483e-36e1-4688-b7f5-ea07361b26a8"

BLECharacteristic *pCharacteristic;

void setup() {
  Serial.begin(115200);
  BLEDevice::init("ProtonAICore");
  BLEServer *pServer = BLEDevice::createServer();
  BLEService *pService = pServer->createService(SERVICE_UUID);

  pCharacteristic = pService->createCharacteristic(
      CHARACTERISTIC_UUID,
      BLECharacteristic::PROPERTY_READ |
      BLECharacteristic::PROPERTY_NOTIFY);
  pCharacteristic->addDescriptor(new BLE2902());
  pService->start();

  BLEAdvertising *pAdvertising = BLEDevice::getAdvertising();
  pAdvertising->addServiceUUID(SERVICE_UUID);
  pAdvertising->start();
  Serial.println("BLE advertising started");
}

void loop() {
  pCharacteristic->setValue("Hello BLE");
  pCharacteristic->notify();
  delay(2000);
}

Use a BLE scanner app (e.g., nRF Connect for iOS or Android) on your phone to verify the BLE advertisement is visible and to read the characteristic value without writing any client code.

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Wi-Fi and Bluetooth BLE Connectivity on Proton AI Core

Connecting to Wi-Fi

HTTP GET Request

Sending Camera Images via HTTP POST

BLE Server Example

​Connecting to Wi-Fi

​HTTP GET Request

​Sending Camera Images via HTTP POST

​BLE Server Example

Connecting to Wi-Fi

HTTP GET Request

Sending Camera Images via HTTP POST

BLE Server Example