package main

import (
	"tinygo.org/x/bluetooth"
)

var adapter = bluetooth.DefaultAdapter

func main() {
	// Enable BLE interface.
	must("enable BLE stack", adapter.Enable())

	// Start scanning.
	println("scanning...")
	err := adapter.Scan(func(adapter *bluetooth.Adapter, device bluetooth.ScanResult) {
		println("found device:", device.Address.String(), device.RSSI, device.LocalName())
	})
	must("start scan", err)
}

func must(action string, err error) {
	if err != nil {
		panic("failed to " + action + ": " + err.Error())
	}
}

package main

import (
	"context"
	"time"

	"tinygo.org/x/bluetooth"
)

var adapter = bluetooth.DefaultAdapter

func main() {
  	// Enable BLE interface.
	must("enable BLE stack", adapter.Enable())

	ctx, cancel := context.WithCancel(context.Background())
	adapter.SetConnectHandler(func(device bluetooth.Device, connected bool) {
		if connected {
			println("device connected:", device.Address.String())
			return
		}

		println("device disconnected:", device.Address.String())
		cancel()
	})

  	// Define the peripheral device info.
	adv := adapter.DefaultAdvertisement()
	must("config adv", adv.Configure(bluetooth.AdvertisementOptions{
		LocalName: "Go Bluetooth",
  	}))
  
  	// Start advertising
	must("start adv", adv.Start())
	
	// Stop advertising to release resources
	defer adv.Stop()

	println("advertising...")
	<- ctx.Done()
}

func must(action string, err error) {
	if err != nil {
		panic("failed to " + action + ": " + err.Error())
	}
}