stm32f4/7: DCMI: extract common registers

And enable for the f7

Originally filed as: https://github.com/libopencm3/libopencm3/pull/1208
Rviewed-by: Karl Palsson <karlp@tweak.net.au>

include/libopencm3/stm32/f7/dcmi.h

@@ -0,0 +1,57 @@
+/** @defgroup dcmi_defines DCMI Defines
+ *
+ * @ingroup STM32F7xx_defines
+ *
+ * @brief Defined Constants and Macros for the STM32F7xx DCMI Peripheral
+ *
+ * @version 1.0.0
+ *
+ * @date 2020-05-15
+ *
+ * LGPL License Terms @ref lgpl_license
+ */
+
+
+/*
+ * STM32F7 DCMI Defines
+ * Copyright (C) 2020, Smolyaninov Nikolay <smolin35@gmail.org>
+ *
+ * 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_DCMI_H
+#define LIBOPENCM3_DCMI_H
+
+#include <libopencm3/stm32/common/dcmi_common_f47.h>
+
+/**@{*/
+
+/**
+ * @defgroup dcmi_cr_values DCMI_CR Values
+ * @ingroup dcmi_defines
+ * @{
+ */
+#define DCMI_CR_OELS			(1 << 20)
+#define DCMI_CR_LSM			(1 << 19)
+#define DCMI_CR_OEBS			(1 << 18)
+#define DCMI_CR_BSM1			(1 << 17)
+#define DCMI_CR_BSM0			(1 << 16)
+
+
+/**@}*/
+
+#endif