simulator v1

internal/ble/service.go

@@ -0,0 +1,48 @@
+package ble
+
+import (
+	"ble_simulator/internal/device"
+	"log"
+
+	"tinygo.org/x/bluetooth"
+)
+
+// SetupService configures the GATT service with command and notify characteristics
+func SetupService(adapter *bluetooth.Adapter, state *device.DeviceState) (*bluetooth.Characteristic, error) {
+	var notifyChar bluetooth.Characteristic
+
+	err := adapter.AddService(&bluetooth.Service{
+		UUID: ServiceUUID,
+		Characteristics: []bluetooth.CharacteristicConfig{
+			{
+				UUID: CommandCharUUID,
+				Flags: bluetooth.CharacteristicWritePermission |
+					bluetooth.CharacteristicWriteWithoutResponsePermission,
+				WriteEvent: func(client bluetooth.Connection, offset int, value []byte) {
+					cmd := string(value)
+					log.Printf("[RX] Command: %s", cmd)
+
+					response := state.ProcessCommand(cmd)
+					log.Printf("[TX] Response: %s", response)
+
+					_, err := notifyChar.Write([]byte(response + "\n"))
+					if err != nil {
+						log.Printf("[ERR] Failed to send response: %v", err)
+					}
+				},
+			},
+			{
+				UUID: NotifyCharUUID,
+				Flags: bluetooth.CharacteristicReadPermission |
+					bluetooth.CharacteristicNotifyPermission,
+				Handle: &notifyChar,
+			},
+		},
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &notifyChar, nil
+}

internal/ble/uuids.go

@@ -0,0 +1,28 @@
+package ble
+
+import "tinygo.org/x/bluetooth"
+
+// Nordic UART Service (NUS) UUIDs - same as real V-BLACK sensor
+// This allows the Flutter app to discover the simulator using the same scan filter
+var (
+	// ServiceUUID - Nordic UART Service
+	// 6e400001-b5a3-f393-e0a9-e50e24dcca9e
+	ServiceUUID = bluetooth.NewUUID([16]byte{
+		0x6e, 0x40, 0x00, 0x01, 0xb5, 0xa3, 0xf3, 0x93,
+		0xe0, 0xa9, 0xe5, 0x0e, 0x24, 0xdc, 0xca, 0x9e,
+	})
+
+	// CommandCharUUID - NUS RX (Write from app's perspective)
+	// 6e400002-b5a3-f393-e0a9-e50e24dcca9e
+	CommandCharUUID = bluetooth.NewUUID([16]byte{
+		0x6e, 0x40, 0x00, 0x02, 0xb5, 0xa3, 0xf3, 0x93,
+		0xe0, 0xa9, 0xe5, 0x0e, 0x24, 0xdc, 0xca, 0x9e,
+	})
+
+	// NotifyCharUUID - NUS TX (Notify to app)
+	// 6e400003-b5a3-f393-e0a9-e50e24dcca9e
+	NotifyCharUUID = bluetooth.NewUUID([16]byte{
+		0x6e, 0x40, 0x00, 0x03, 0xb5, 0xa3, 0xf3, 0x93,
+		0xe0, 0xa9, 0xe5, 0x0e, 0x24, 0xdc, 0xca, 0x9e,
+	})
+)