stm32f7: enable existing CRC support

include/libopencm3/stm32/crc.h

@@ -30,6 +30,8 @@
 #       include <libopencm3/stm32/f3/crc.h>
 #elif defined(STM32F4)
 #       include <libopencm3/stm32/f4/crc.h>
+#elif defined(STM32F7)
+#       include <libopencm3/stm32/f7/crc.h>
 #elif defined(STM32L1)
 #       include <libopencm3/stm32/l1/crc.h>
 #elif defined(STM32L4)

include/libopencm3/stm32/f7/crc.h

@@ -0,0 +1,36 @@
+/** @defgroup crc_defines CRC Defines
+ *
+ * @brief <b>libopencm3 Defined Constants and Types for the STM32F7xx CRC
+ * Generator </b>
+ *
+ * @ingroup STM32F7xx_defines
+ *
+ * @version 1.0.0
+ *
+ * @date 11 Apr 2019
+ *
+ *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/>.
+ */
+
+#ifndef LIBOPENCM3_CRC_H
+#define LIBOPENCM3_CRC_H
+
+#include <libopencm3/stm32/common/crc_v2.h>
+
+#endif

lib/stm32/f7/Makefile

@@ -44,6 +44,7 @@ ARFLAGS		= rcs
 
 OBJS		= desig.o
 OBJS		+= dma_common_f24.o
+OBJS		+= crc_common_all.o crc_v2.o
 OBJS		+= flash_common_all.o flash_common_f.o flash_common_f24.o flash.o
 OBJS		+= gpio.o gpio_common_all.o gpio_common_f0234.o
 OBJS		+= i2c_common_v2.o