X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=altoslib%2FAltosConvert.java;h=484f621377f1f168cd0920d0f9e0d482c5c31bd2;hb=fe14315d4cfccf8b53d9c4b7fa79302fd36b2c9a;hp=8f214c8b40c7a80fc6778a3b6806e471b76b7ad6;hpb=053d092b3dca4ebb98e97ec0fe24f5f5e1c31f88;p=fw%2Faltos

diff --git a/altoslib/AltosConvert.java b/altoslib/AltosConvert.java
index 8f214c8b..484f6213 100644
--- a/altoslib/AltosConvert.java
+++ b/altoslib/AltosConvert.java
@@ -18,7 +18,7 @@
 /*
  * Sensor data conversion functions
  */
-package org.altusmetrum.altoslib_3;
+package org.altusmetrum.altoslib_4;
 
 public class AltosConvert {
 	/*
@@ -224,10 +224,21 @@ public class AltosConvert {
 		return sensor / 32767.0 * supply * 127/27;
 	}
 
-	static double easy_mini_voltage(int sensor) {
-		double	supply = 3.0;
+	static double easy_mini_voltage(int sensor, int serial) {
+		double	supply = 3.3;
+		double	diode_offset = 0.0;
 
-		return sensor / 32767.0 * supply * 127/27;
+		/* early prototypes had a 3.0V regulator */
+		if (serial < 1000)
+			supply = 3.0;
+
+		/* Purple v1.0 boards had the sensor after the
+		 * blocking diode, which drops about 150mV
+		 */
+		if (serial < 1665)
+			diode_offset = 0.150;
+
+		return sensor / 32767.0 * supply * 127/27 + diode_offset;
 	}
 
 	public static double radio_to_frequency(int freq, int setting, int cal, int channel) {
@@ -348,4 +359,16 @@ public class AltosConvert {
 			csum += data[i + start];
 		return csum & 0xff;
 	}
+
+	public static double beep_value_to_freq(int value) {
+		if (value == 0)
+			return 4000;
+		return 1.0/2.0 * (24.0e6/32.0) / (double) value;
+	}
+
+	public static int beep_freq_to_value(double freq) {
+		if (freq == 0)
+			return 94;
+		return (int) Math.floor (1.0/2.0 * (24.0e6/32.0) / freq + 0.5);
+	}
 }