altos: Add floating point math functions from newlib

[fw/altos] / altoslib / AltosConvert.java

diff --git a/altoslib/AltosConvert.java b/altoslib/AltosConvert.java
index a1e2cdcab7715293f08707b92cd03548294909db..760d9eb98c273a0501f15aad1e09b4dc6a6dca67 100644 (file)
--- a/altoslib/AltosConvert.java
+++ b/altoslib/AltosConvert.java
@@ -18,7 +18,7 @@
 /*
  * Sensor data conversion functions
  */
-package org.altusmetrum.altoslib_1;
+package org.altusmetrum.altoslib_2;
 
 public class AltosConvert {
        /*
@@ -196,6 +196,40 @@ public class AltosConvert {
                return ((count / 16.0) / 2047.0 + 0.095) / 0.009 * 1000.0;
        }
 
+       static double
+       thermometer_to_temperature(double thermo)
+       {
+               return (thermo - 19791.268) / 32728.0 * 1.25 / 0.00247;
+       }
+
+       static double mega_adc(int raw) {
+               return raw / 4095.0;
+       }
+
+       static public double mega_battery_voltage(int v_batt) {
+               if (v_batt != AltosLib.MISSING)
+                       return 3.3 * mega_adc(v_batt) * (15.0 + 27.0) / 27.0;
+               return AltosLib.MISSING;
+       }
+
+       static double mega_pyro_voltage(int raw) {
+               if (raw != AltosLib.MISSING)
+                       return 3.3 * mega_adc(raw) * (100.0 + 27.0) / 27.0;
+               return AltosLib.MISSING;
+       }
+
+       static double tele_mini_voltage(int sensor) {
+               double  supply = 3.3;
+
+               return sensor / 32767.0 * supply * 127/27;
+       }
+
+       static double easy_mini_voltage(int sensor) {
+               double  supply = 3.0;
+
+               return sensor / 32767.0 * supply * 127/27;
+       }
+
        public static double radio_to_frequency(int freq, int setting, int cal, int channel) {
                double  f;