diff --git a/cmd/bridge/bluetooth.go b/cmd/bridge/bluetooth.go
index 06ab7d0..2cdc95d 100644
--- a/cmd/bridge/bluetooth.go
+++ b/cmd/bridge/bluetooth.go
@@ -1 +1,83 @@
 package main
+
+import (
+	"encoding/binary"
+	"fmt"
+	"math"
+	"time"
+
+	"tinygo.org/x/bluetooth"
+)
+
+var adapter = bluetooth.DefaultAdapter
+
+func must(err error) {
+	if err != nil {
+		panic(err)
+	}
+}
+
+func ExposeBluetooth() {
+	must(adapter.Enable())
+
+	var powerChar bluetooth.Characteristic
+
+	must(adapter.AddService(&bluetooth.Service{
+		UUID: bluetooth.New16BitUUID(0x1818),
+		Characteristics: []bluetooth.CharacteristicConfig{
+			{
+				UUID:  bluetooth.New16BitUUID(0x2A65), // Cycling Power Feature
+				Flags: bluetooth.CharacteristicReadPermission,
+				Value: []byte{0, 0, 0, 0},
+			},
+			{
+				UUID:   bluetooth.New16BitUUID(0x2A63), // Cycling Power Measurement
+				Flags:  bluetooth.CharacteristicNotifyPermission,
+				Handle: &powerChar,
+			},
+		},
+	}))
+
+	must(adapter.DefaultAdvertisement().Configure(bluetooth.AdvertisementOptions{
+		LocalName:    "LinuxAntBtBridge",
+		ServiceUUIDs: []bluetooth.UUID{bluetooth.New16BitUUID(0x1818)},
+	}))
+	must(adapter.DefaultAdvertisement().Start())
+	fmt.Println("BLE advertising...")
+
+	var totalRevs float64
+	var lastCompletedRev float64 // time in 1/1024s of last completed revolution
+	lastUpdate := time.Now()
+	var elapsedTicks float64
+	for {
+		now := time.Now()
+		deltaT := now.Sub(lastUpdate).Seconds()
+		lastUpdate = now
+
+		sec := now.Second()
+		watts := uint16(100 + sec)
+		rpm := float64(50 + sec)
+
+		totalRevs += rpm / 60.0 * deltaT
+		elapsedTicks += deltaT * 1024.0
+
+		completedRevs := math.Floor(totalRevs)
+		// time at which the last completed revolution occurred
+		// = current time - fractional part of revolution * time per revolution
+		fracRev := totalRevs - completedRevs
+		timePerRev := 1024.0 * 60.0 / rpm
+		lastCompletedRev = elapsedTicks - fracRev*timePerRev
+
+		payload := make([]byte, 8)
+		binary.LittleEndian.PutUint16(payload[0:], 0x20)
+		binary.LittleEndian.PutUint16(payload[2:], watts)
+		binary.LittleEndian.PutUint16(payload[4:], uint16(completedRevs))
+		binary.LittleEndian.PutUint16(payload[6:], uint16(lastCompletedRev))
+
+		powerChar.Write(payload)
+		fmt.Printf("watts: %d  rpm: %.0f  completedRevs: %.0f  lastRevTime: %.0f\n",
+			watts, rpm, completedRevs, lastCompletedRev)
+
+		time.Sleep(250 * time.Millisecond)
+	}
+}
diff --git a/cmd/bridge/main.go b/cmd/bridge/main.go
index 466e455..ccc5421 100644
--- a/cmd/bridge/main.go
+++ b/cmd/bridge/main.go
@@ -1,14 +1,10 @@
 package main
 
 import (
-	"encoding/binary"
 	"fmt"
-	"math"
 	"os/exec"
-	"time"
 
 	"github.com/google/gousb"
-	"tinygo.org/x/bluetooth"
 )
 
 func oldMain() {
@@ -22,78 +18,9 @@ func oldMain() {
 	fmt.Println("channel closed")
 }
 
-var adapter = bluetooth.DefaultAdapter
-
 func main() {
 	exec.Command("hciconfig", "hci0", "down").Run()
 	exec.Command("hciconfig", "hci0", "up").Run()
 
-	must(adapter.Enable())
-
-	var powerChar bluetooth.Characteristic
-
-	must(adapter.AddService(&bluetooth.Service{
-		UUID: bluetooth.New16BitUUID(0x1818),
-		Characteristics: []bluetooth.CharacteristicConfig{
-			{
-				UUID:  bluetooth.New16BitUUID(0x2A65), // Cycling Power Feature
-				Flags: bluetooth.CharacteristicReadPermission,
-				Value: []byte{0, 0, 0, 0},
-			},
-			{
-				UUID:   bluetooth.New16BitUUID(0x2A63), // Cycling Power Measurement
-				Flags:  bluetooth.CharacteristicNotifyPermission,
-				Handle: &powerChar,
-			},
-		},
-	}))
-
-	must(adapter.DefaultAdvertisement().Configure(bluetooth.AdvertisementOptions{
-		LocalName:    "LinuxAntBtBridge",
-		ServiceUUIDs: []bluetooth.UUID{bluetooth.New16BitUUID(0x1818)},
-	}))
-	must(adapter.DefaultAdvertisement().Start())
-	fmt.Println("BLE advertising...")
-
-	var totalRevs float64
-	var lastCompletedRev float64 // time in 1/1024s of last completed revolution
-	lastUpdate := time.Now()
-	var elapsedTicks float64
-	for {
-		now := time.Now()
-		deltaT := now.Sub(lastUpdate).Seconds()
-		lastUpdate = now
-
-		sec := now.Second()
-		watts := uint16(100 + sec)
-		rpm := float64(50 + sec)
-
-		totalRevs += rpm / 60.0 * deltaT
-		elapsedTicks += deltaT * 1024.0
-
-		completedRevs := math.Floor(totalRevs)
-		// time at which the last completed revolution occurred
-		// = current time - fractional part of revolution * time per revolution
-		fracRev := totalRevs - completedRevs
-		timePerRev := 1024.0 * 60.0 / rpm
-		lastCompletedRev = elapsedTicks - fracRev*timePerRev
-
-		payload := make([]byte, 8)
-		binary.LittleEndian.PutUint16(payload[0:], 0x20)
-		binary.LittleEndian.PutUint16(payload[2:], watts)
-		binary.LittleEndian.PutUint16(payload[4:], uint16(completedRevs))
-		binary.LittleEndian.PutUint16(payload[6:], uint16(lastCompletedRev))
-
-		powerChar.Write(payload)
-		fmt.Printf("watts: %d  rpm: %.0f  completedRevs: %.0f  lastRevTime: %.0f\n",
-			watts, rpm, completedRevs, lastCompletedRev)
-
-		time.Sleep(250 * time.Millisecond)
-	}
-}
-
-func must(err error) {
-	if err != nil {
-		panic(err)
-	}
+	ExposeBluetooth()
 }