doc: efm32: acmp: document, and include via peripheral_apis

Requires a stub .c file as it has common includes with out any common
code (yet)

include/libopencm3/efm32/common/acmp_common.h

@@ -1,3 +1,5 @@
+/** @addtogroup acmp_defines
+ */
 /*
  * This file is part of the libopencm3 project.
  *
@@ -17,8 +19,9 @@
  * along with this library.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef LIBOPENCM3_EFM32_ACMP_H
-#define LIBOPENCM3_EFM32_ACMP_H
+#pragma once
+
+/**@{*/
 
 #include <libopencm3/efm32/memorymap.h>
 #include <libopencm3/cm3/common.h>
@@ -181,5 +184,4 @@
 #define ACMP1_IFC		ACMP_IFC(ACMP1)
 #define ACMP1_ROUTE		ACMP_ROUTE(ACMP1)
 
-#endif
-
+/**@}*/

include/libopencm3/efm32/ezr32wg/acmp.h

@@ -1,3 +1,11 @@
+/** @defgroup acmp_defines ACMP Defines
+ *
+ * @brief <b>Defined Constants and Types for the Analog Comparator module</b>
+ *
+ * @ingroup EZR32WG_defines
+ *
+ * LGPL License Terms @ref lgpl_license
+ */
 /*
  * This file is part of the libopencm3 project.
  *
@@ -17,9 +25,6 @@
  * along with this library.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef LIBOPENCM3_EFM32_EZR32WG_ACMP_H
-#define LIBOPENCM3_EFM32_EZR32WG_ACMP_H
+#pragma once
 
 #include <libopencm3/efm32/common/acmp_common.h>
-
-#endif

include/libopencm3/efm32/lg/acmp.h

@@ -1,3 +1,11 @@
+/** @defgroup acmp_defines ACMP Defines
+ *
+ * @brief <b>Defined Constants and Types for the Analog Comparator module</b>
+ *
+ * @ingroup EFM32LG_defines
+ *
+ * LGPL License Terms @ref lgpl_license
+ */
 /*
  * This file is part of the libopencm3 project.
  *
@@ -17,9 +25,6 @@
  * along with this library.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef LIBOPENCM3_EFM32_LG_ACMP_H
-#define LIBOPENCM3_EFM32_LG_ACMP_H
+#pragma once
 
 #include <libopencm3/efm32/common/acmp_common.h>
-
-#endif

include/libopencm3/efm32/wg/acmp.h

@@ -1,3 +1,11 @@
+/** @defgroup acmp_defines ACMP Defines
+ *
+ * @brief <b>Defined Constants and Types for the Analog Comparator module</b>
+ *
+ * @ingroup EFM32WG_defines
+ *
+ * LGPL License Terms @ref lgpl_license
+ */
 /*
  * This file is part of the libopencm3 project.
  *
@@ -17,9 +25,6 @@
  * along with this library.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef LIBOPENCM3_EFM32_WG_ACMP_H
-#define LIBOPENCM3_EFM32_WG_ACMP_H
+#pragma once
 
 #include <libopencm3/efm32/common/acmp_common.h>
-
-#endif

lib/efm32/ezr32wg/Makefile

@@ -37,6 +37,7 @@ TGT_CFLAGS      += $(DEBUG_FLAGS)
 # ARFLAGS	= rcsv
 ARFLAGS		= rcs
 
+OBJS += acmp_common.o
 OBJS += adc_common.o
 OBJS += cmu_common.o
 OBJS += dac_common.o

lib/efm32/lg/Makefile

@@ -37,6 +37,7 @@ TGT_CFLAGS	+= $(STANDARD_FLAGS)
 # ARFLAGS	= rcsv
 ARFLAGS		= rcs
 
+OBJS += acmp_common.o
 OBJS += adc_common.o
 OBJS += cmu_common.o
 OBJS += dac_common.o

lib/efm32/wg/Makefile

@@ -37,6 +37,7 @@ TGT_CFLAGS      += $(DEBUG_FLAGS)
 # ARFLAGS	= rcsv
 ARFLAGS		= rcs
 
+OBJS += acmp_common.o
 OBJS += adc_common.o
 OBJS += cmu_common.o
 OBJS += dac_common.o