altosui: Flush telemetry lines before starting to watch for scan results

This prevents pending telemetry lines from being incorrectly
attributed to the wrong channel/telemetry.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/altosui/AltosScanUI.java b/altosui/AltosScanUI.java
index bc1638ed..96cab73b 100644
--- a/altosui/AltosScanUI.java
+++ b/altosui/AltosScanUI.java
@@ -280,6 +280,11 @@ public class AltosScanUI
 			reader = new AltosTelemetryReader(device);
 			reader.serial.set_channel(channel);
 			reader.serial.set_telemetry(telemetry);
+			try {
+				Thread.sleep(100);
+			} catch (InterruptedException ie) {
+			}
+			reader.flush();
 			handler = new TelemetryHandler();
 			thread = new Thread(handler);
 			thread.start();