altosui: Convert from channels to frequencies

Major areas:

 * Preferences are stored as frequencies instead
   of channels

 * Serial configuration is done using frequencies

 * UI is presented with frequency lists

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

1 files changed, 6 insertions, 0 deletions

diff --git a/altosui/AltosFrequency.java b/altosui/AltosFrequency.java
index 8265eafc..0617ce74 100644
--- a/altosui/AltosFrequency.java
+++ b/altosui/AltosFrequency.java
@@ -44,6 +44,12 @@ public class AltosFrequency {
 				     frequency, description);
 	}
 
+	public boolean close(double f) {
+		double	diff = Math.abs(frequency - f);
+
+		return diff < 0.010;
+	}
+
 	public AltosFrequency(double f, String d) {
 		frequency = f;
 		description = d;