X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=altosui%2FAltosConvert.java;h=db7039ec5294a5dc16b8e99248a6612360fb3a0a;hb=ca036c5616c3e745c0b878ed90618d4ff710c0e5;hp=c2ae9a507897079970036ebef8cca8505b306e66;hpb=81bb6f42d8b859195ea5a35806c42d98ba82e8e1;p=fw%2Faltos

diff --git a/altosui/AltosConvert.java b/altosui/AltosConvert.java
index c2ae9a50..db7039ec 100644
--- a/altosui/AltosConvert.java
+++ b/altosui/AltosConvert.java
@@ -220,4 +220,36 @@ public class AltosConvert {
 	static double radio_channel_to_frequency(int channel) {
 		return 434.550 + channel * 0.100;
 	}
+
+	static int[] ParseHex(String line) {
+		String[] tokens = line.split("\\s+");
+		int[] array = new int[tokens.length];
+
+		for (int i = 0; i < tokens.length; i++)
+			try {
+				array[i] = Integer.parseInt(tokens[i], 16);
+			} catch (NumberFormatException ne) {
+				return null;
+			}
+		return array;
+	}
+
+	static double meters_to_feet(double meters) {
+		return meters * (100 / (2.54 * 12));
+	}
+
+	static double meters_to_mach(double meters) {
+		return meters / 343;		/* something close to mach at usual rocket sites */
+	}
+
+	static double meters_to_g(double meters) {
+		return meters / 9.80665;
+	}
+
+	static int checksum(int[] data, int start, int length) {
+		int	csum = 0x5a;
+		for (int i = 0; i < length; i++)
+			csum += data[i + start];
+		return csum & 0xff;
+	}
 }