altosui: Handle Monitor Idle errors better

Deal with missing data by checking for MISSING in more places.
Handle serial communication failures during send by reporting back
from libaltos.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/altoslib/AltosRecord.java b/altoslib/AltosRecord.java
index e468f84b..8722bc05 100644
--- a/altoslib/AltosRecord.java
+++ b/altoslib/AltosRecord.java
@@ -127,7 +127,7 @@ public class AltosRecord implements Comparable <AltosRecord>, Cloneable {
 
 		double	p = filtered_pressure();
 		if (p == MISSING)
-			return MISSING;
+			return raw_altitude();
 		return AltosConvert.pressure_to_altitude(p);
 	}