Detect a HMC5883 magnetometer by reading the id registers for NUCLEO-L432KC

Revision:
1:8cd11758eff3
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/compass_3d.h	Thu Aug 30 20:07:17 2018 +0000
@@ -0,0 +1,6 @@
+/*
+3d compass
+need a vector3d
+*/
+
+struct 
\ No newline at end of file