67 lines
1.4 KiB
Go
67 lines
1.4 KiB
Go
package main
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import (
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"os"
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"github.com/tinygo-org/bluetooth"
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)
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var adapter = bluetooth.DefaultAdapter
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func main() {
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if len(os.Args) < 2 {
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println("usage: discover [local name]")
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os.Exit(1)
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}
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// look for device with specific name
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name := os.Args[1]
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// Enable BLE interface.
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must("enable BLE stack", adapter.Enable())
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ch := make(chan bluetooth.ScanResult, 1)
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// Start scanning.
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println("scanning...")
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err := adapter.Scan(func(adapter *bluetooth.Adapter, result bluetooth.ScanResult) {
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println("found device:", result.Address.String(), result.RSSI, result.LocalName())
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if result.LocalName() == name {
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adapter.StopScan()
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ch <- result
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}
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})
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var device *bluetooth.Device
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select {
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case result := <-ch:
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device, err = adapter.Connect(result.Address, bluetooth.ConnectionParams{})
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if err != nil {
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println(err.Error())
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os.Exit(1)
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}
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println("connected to ", result.LocalName())
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}
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// get services
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println("discovering services/characteristics")
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srvcs, err := device.DiscoverServices(nil)
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for _, srvc := range srvcs {
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println("- service", srvc.UUID.String())
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chars, _ := srvc.DiscoverCharacteristics(nil)
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for _, char := range chars {
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println("-- characteristic", char.UUID.String())
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}
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}
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must("start scan", err)
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}
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func must(action string, err error) {
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if err != nil {
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panic("failed to " + action + ": " + err.Error())
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}
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}
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