From 2b13e010fe9542bbca8287949880cef3112a94a3 Mon Sep 17 00:00:00 2001
From: smckown <smckown@4bc1554a-c7f2-4f65-a403-e0be01f0239c>
Date: Wed, 4 Nov 2009 19:17:59 +0000
Subject: [PATCH] Chagne the wind vane compass accumulator from an uint16_t to
 an uint8_t array.

We are suposed to accumulate wind readings every 2 minutes, which is only 120
points at one per second.
---
 tos/platforms/tmirws/sensors/WindVaneP.nc | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/tos/platforms/tmirws/sensors/WindVaneP.nc b/tos/platforms/tmirws/sensors/WindVaneP.nc
index 8ec74fc5..8557c8cc 100644
--- a/tos/platforms/tmirws/sensors/WindVaneP.nc
+++ b/tos/platforms/tmirws/sensors/WindVaneP.nc
@@ -49,7 +49,7 @@ generic module WindVaneP(uint8_t sectors) {
   }
 }
 implementation {
-  uint16_t m_compass[sectors];
+  uint8_t m_compass[sectors];
   bool m_overflow;
   wind_vane_t* m_data;
 
@@ -69,7 +69,7 @@ implementation {
   }
 
   /* Convert a degree heading into a sector */
-  uint16_t degreeToSector(uint16_t degree)
+  uint8_t degreeToSector(uint16_t degree)
   {
     return ((degree * sectors + 180) / 360) % sectors;
   }
@@ -83,7 +83,7 @@ implementation {
   /* circularly examine compass, starting with pos + 1, for the next compass
    * position having a value of zero.
    */
-  uint8_t nextNonZero(uint16_t* compass, uint8_t pos)
+  uint8_t nextNonZero(uint8_t* compass, uint8_t pos)
   {
     do {
       pos = (pos + 1) % sectors;
@@ -91,7 +91,7 @@ implementation {
     return pos;
   }
 
-  bool isCompassEmpty(uint16_t* compass)
+  bool isCompassEmpty(uint8_t* compass)
   {
     int i;
 
@@ -105,7 +105,7 @@ implementation {
   /* Reduce all compass headings equally until a compass heading has a value
    * of zero.
    */
-  void minimizeCompass(uint16_t* compass)
+  void minimizeCompass(uint8_t* compass)
   {
     uint8_t min = 255;
     int i;
@@ -124,7 +124,7 @@ implementation {
    * that arc in m_data's left and right fields.  The compass arc is always
    * defined clockwise, from left to right.
    */
-  void findArc(uint16_t* compass)
+  void findArc(uint8_t* compass)
   {
     uint8_t begin;
     uint8_t save = 255;
@@ -146,7 +146,7 @@ implementation {
     m_data->left = (save + dist) % sectors;
   }
 
-  void calcAvg(uint16_t* compass)
+  void calcAvg(uint8_t* compass)
   {
     /* Find the average compass heading */
     uint32_t sum = 0;
@@ -208,7 +208,7 @@ implementation {
   task void readCompass()
   {
     bool overflow;
-    uint16_t compass[sectors];
+    uint8_t compass[sectors];
     wind_vane_t* data = m_data;
 
     atomic {
-- 
2.39.2