[STM32F0:COMP] Add preliminary support of module

lib/stm32/f0/Makefile

@@ -33,7 +33,7 @@ CFLAGS		= -Os -g \
 
 ARFLAGS		= rcs
 
-OBJS		= flash.o rcc.o usart.o dma.o rtc.o
+OBJS		= flash.o rcc.o usart.o dma.o rtc.o comparator.o
 
 OBJS            += gpio_common_all.o gpio_common_f0234.o crc_common_all.o \
                    pwr_common_all.o iwdg_common_all.o rtc_common_l1f024.o \

lib/stm32/f0/comparator.c

@@ -0,0 +1,61 @@
+/** @defgroup comp_file COMP
+ *
+ * @ingroup STM32F0xx
+ *
+ * @brief <b>libopencm3 STM32F0xx COMP</b>
+ *
+ * @version 1.0.0
+ *
+ * @date 10 July 2013
+ *
+ * LGPL License Terms @ref lgpl_license
+ */
+
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopencm3/stm32/comparator.h>
+
+void comp_enable(uint8_t id)
+{
+	COMP_CSR(id) |= COMP_CSR_EN;
+}
+
+void comp_disable(uint8_t id)
+{
+	COMP_CSR(id) &= ~COMP_CSR_EN;
+}
+
+void comp_select_input(uint8_t id, uint32_t input)
+{
+	COMP_CSR(id) = (COMP_CSR(id) & ~COMP_CSR_INSEL) | input;
+}
+
+void comp_select_output(uint8_t id, uint32_t output)
+{
+	COMP_CSR(id) = (COMP_CSR(id) & ~COMP_CSR_OUTSEL) | output;
+}
+
+void comp_select_hyst(uint8_t id, uint32_t hyst)
+{
+	COMP_CSR(id) = (COMP_CSR(id) & ~COMP_CSR_HYST) | hyst;
+}
+
+void comp_select_speed(uint8_t id, uint32_t speed)
+{
+	COMP_CSR(id) = (COMP_CSR(id) & ~COMP_CSR_SPEED) | speed;
+}