takuya ichise / HMC5883L

The library for the HMC5883L, which allows you to receive directional information from this library.

Dependents:   Seeed_Grove_Digital_Compass_Example

Fork of HMC5883L by Tyler Weaver

Diff: HMC5883L.cpp

Revision:
2:8eb755577f83
Parent:
1:8a1357c351c6
Child:
3:14d274e0f9de
--- a/HMC5883L.cpp	Wed Oct 31 05:06:34 2012 +0000
+++ b/HMC5883L.cpp	Thu Nov 01 18:43:52 2012 +0000
@@ -133,15 +133,15 @@
 {
     int raw_data[3];
     getXYZ(raw_data);
-    double heading = atan2(raw_data[1], raw_data[0]); // heading = arctan(Y/X)
+    double heading = atan2(static_cast<double>(raw_data[1]), static_cast<double>(raw_data[0])); // heading = arctan(Y/X)
     
     // TODO: declenation angle compensation
     
     if(heading < 0.0) // fix sign
-        heading += 2PI;
+        heading += PI2;
         
-    if(heading > 2PI) // fix overflow
-        heading -= 2PI;
+    if(heading > PI2) // fix overflow
+        heading -= PI2;
         
     return heading;
 }
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