tinygo-org · acouvreur · Apr 10, 2026 · acouvreur · Apr 11, 2026
diff --git a/adapter_js.go b/adapter_js.go
@@ -0,0 +1,44 @@
+package bluetooth
+
+import (
+	"errors"
+	"syscall/js"
+)
+
+var _ BLEAdapter = (*Adapter)(nil)
+
+// Adapter represents the WebBluetooth adapter accessed via navigator.bluetooth.
+type Adapter struct {
+	bluetooth      js.Value
+	connectHandler func(device Device, connected bool)
+
+	// RequestedServices is the list of service UUIDs that will be passed as
+	// optionalServices to navigator.bluetooth.requestDevice(). WebBluetooth
+	// requires services to be declared upfront — you cannot discover or
+	// access services that are not listed here or matched by a filter.
+	//
+	// Set this before calling Scan().
+	RequestedServices []UUID
+}
+
+// DefaultAdapter is the default adapter using the navigator.bluetooth API.
+//
+// Make sure to call Enable() before using it to initialize the adapter.
+var DefaultAdapter = &Adapter{
+	connectHandler: func(device Device, connected bool) {},
+}
+
+// Enable configures the BLE stack. It must be called before any
+// Bluetooth-related calls (unless otherwise indicated).
+func (a *Adapter) Enable() error {
+	navigator := js.Global().Get("navigator")
+	if navigator.IsUndefined() {
+		return errors.New("bluetooth: navigator is not available")
+	}
+	bt := navigator.Get("bluetooth")
+	if bt.IsUndefined() {
+		return errors.New("bluetooth: WebBluetooth is not supported in this browser")
+	}
+	a.bluetooth = bt
+	return nil
+}
diff --git a/examples/webbluetooth/html/index.html b/examples/webbluetooth/html/index.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>WebBluetooth – TinyGo Device Information</title>
+    <style>
+        body { font-family: system-ui, sans-serif; max-width: 720px; margin: 2rem auto; padding: 0 1rem; }
+        button { font-size: 1.1rem; padding: 0.5rem 1.5rem; cursor: pointer; }
+        #log { background: #f5f5f5; border: 1px solid #ddd; border-radius: 4px; padding: 1rem; margin-top: 1rem; min-height: 120px; }
+        #log p { margin: 0.25rem 0; font-family: monospace; font-size: 0.9rem; }
+    </style>
+</head>
+<body>
+    <h1>WebBluetooth – TinyGo Device Information</h1>
+    <p>Click the button below to connect to a BLE device and read its Device Information service (manufacturer, model, firmware).</p>
+    <button id="connectBtn" disabled>Loading WASM…</button>
+    <div id="log"></div>
+
+    <script src="wasm_exec.js"></script>
+    <script>
+        const go = new Go();
+        WebAssembly.instantiateStreaming(fetch("wasm.wasm"), go.importObject).then((result) => {
+            go.run(result.instance);
+            const btn = document.getElementById("connectBtn");
+            btn.textContent = "Connect";
+            btn.disabled = false;
+            btn.addEventListener("click", () => {
+                if (typeof btConnect === "function") {
+                    btConnect();
+                } else {
+                    alert("WASM not ready yet");
+                }
+            });
+        });
+    </script>
+</body>
+</html>
diff --git a/examples/webbluetooth/html/wasm.wasm b/examples/webbluetooth/html/wasm.wasm