X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=boards%2Fek-lm3s1968%2Fexamples%2Fgps%2Fcompass.h;fp=boards%2Fek-lm3s1968%2Fexamples%2Fgps%2Fcompass.h;h=f1f4c5f60c2cd80dea14d4a7054f940b9b75bf08;hb=e9ccb7d4eec1b5e4d3fc670336828caa52df8056;hp=0000000000000000000000000000000000000000;hpb=bcf97d564b47214ec01b938524e11875ebb7239a;p=bertos.git

diff --git a/boards/ek-lm3s1968/examples/gps/compass.h b/boards/ek-lm3s1968/examples/gps/compass.h
new file mode 100644
index 00000000..f1f4c5f6
--- /dev/null
+++ b/boards/ek-lm3s1968/examples/gps/compass.h
@@ -0,0 +1,20 @@
+#ifndef COMPASS_H
+#define COMPASS_H
+
+#define PI 3.14159265358979323846
+
+INLINE float deg2rad(float deg)
+{
+	return deg * PI / 180;
+}
+
+INLINE float rad2deg(float rad)
+{
+	return rad * 180 / PI;
+}
+
+float distance(float lat1, float lon1, float lat2, float lon2);
+int bearing(float lat1, float lon1, float lat2, float lon2);
+const char *compass_heading(int bearing);
+
+#endif /* COMPASS_H */