From 88e29e62e4ca69e9b08410d9bbeb23cfb6b27c5f Mon Sep 17 00:00:00 2001
From: Walter Bender <walter.bender@gmail.com>
Date: Sun, 03 Jun 2012 13:33:56 +0000
Subject: more robust bounds checking for resistance sensors

---
(limited to 'plugins')

diff --git a/plugins/audio_sensors/audio_sensors.py b/plugins/audio_sensors/audio_sensors.py
index 978a17d..0662acb 100644
--- a/plugins/audio_sensors/audio_sensors.py
+++ b/plugins/audio_sensors/audio_sensors.py
@@ -354,13 +354,21 @@ class Audio_sensors(Plugin):
                 else:
                     resistance = 420000000
             elif self.hw == XO175:
-                return (180000000 / (30700 - avg_buf)) - 3150
+                if avg_buf < 30700:
+                    return (180000000 / (30700 - avg_buf)) - 3150
+                else:
+                    resistance = 999999999
             else:  # XO 3.0
-                return (46000000 / (30514 - avg_buf)) - 1150
+                if avg_buf < 30514:
+                    return (46000000 / (30514 - avg_buf)) - 1150
+                else:
+                    resistance = 999999999
             if channel == 0:
                 self._parent.lc.update_label_value('resistance', resistance)
             else:
                 self._parent.lc.update_label_value('resistance2', resistance)
+            if resistance < 0:
+                resistance = 0
             return resistance
         else:
             return 0
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