create device open error type

lyimmi · Sep 7, 2023 · 7cf7d9f · 7cf7d9f
1 parent 40244a3
commit 7cf7d9f
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/device.go b/device.go
@@ -59,10 +59,10 @@ func (d *Device) Open(readState bool) (err error) {
 	if d.deviceInfo == nil {
 		return ErrDeviceInfoNotFound
 	}
-	
+
 	d.device, err = d.deviceInfo.Open()
 	if err != nil {
-		return
+		return fmt.Errorf("%w, %w", ErrDeviceOpen, err)
 	}
 
 	d.connected = true

diff --git a/error.go b/error.go
@@ -5,6 +5,7 @@ import "errors"
 // Error types
 var (
 	ErrNoDeviceFound         = errors.New("no device found")
+	ErrDeviceOpen            = errors.New("cannot connect to device")
 	ErrDeviceInfoNotFound    = errors.New("cannot connect to device, device information not found")
 	ErrDeviceNotConnected    = errors.New("device is not connected, call Open()")
 	ErrInvalidNumberOfRelays = errors.New("invalid number of relays found")