Compass KEYWORD1
AP_Compass KEYWORD1
APM_Compass KEYWORD1
init KEYWORD2
read KEYWORD2
calculate KEYWORD2
set_orientation KEYWORD2
set_offsets KEYWORD2
set_declination KEYWORD2
heading KEYWORD2
heading_x KEYWORD2
heading_y KEYWORD2
mag_x KEYWORD2
mag_y KEYWORD2
mag_z KEYWORD2
last_update KEYWORD2