overhauled documentation

includes minor refactoring in example code and modification of how the
generic and the tinygecko specific vector.h go together (bringing it in
line with stm32/f1's memorymap.h)

lib/efm32/tinygecko/Makefile

@@ -19,6 +19,7 @@
 ##
 
 LIBNAME		= libopencm3_efm32tinygecko
+FAMILY		= TINYGECKO
 
 PREFIX		?= arm-none-eabi
 #PREFIX		?= arm-elf
@@ -26,7 +27,7 @@ CC		= $(PREFIX)-gcc
 AR		= $(PREFIX)-ar
 CFLAGS		= -Os -g -Wall -Wextra -I../../../include -fno-common \
 		  -mcpu=cortex-m3 -mthumb -Wstrict-prototypes \
-		  -ffunction-sections -fdata-sections -MD -DSTM32F1
+		  -ffunction-sections -fdata-sections -MD -D$(FAMILY)
 # ARFLAGS	= rcsv
 ARFLAGS		= rcs
 OBJS		= vector.o devicerevision.o

lib/efm32/tinygecko/vector.c

@@ -18,7 +18,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <libopencm3/efm32/tinygecko/vector.h>
+#include <libopencm3/efm32/vector.h>
 
 #define WEAK __attribute__ ((weak))