added menu option to choose board revision from the IDE

Author: ppescher

1.0.3/boards.txt

@@ -21,3 +21,12 @@ geolink_opentracker.build.variant=geolink_opentracker
 geolink_opentracker.build.variant_system_lib=libsam_sam3a4c_gcc_rel.a
 geolink_opentracker.build.vid=0x2341
 geolink_opentracker.build.pid=0x003e
+
+
+## Menu Additions
+
+menu.HWVersion=Board Version
+geolink_opentracker.menu.HWVersion.ver_2_4=OpenTracker 2.4
+geolink_opentracker.menu.HWVersion.ver_2_4.build.extra_flags=-D__SAM3A4C__ -mthumb {build.usb_flags} -DOPENTRACKER_HW_REV=0x0240
+geolink_opentracker.menu.HWVersion.ver_2_3=OpenTracker 2.3
+geolink_opentracker.menu.HWVersion.ver_2_3.build.extra_flags=-D__SAM3A4C__ -mthumb {build.usb_flags} -DOPENTRACKER_HW_REV=0x0230