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diff --git a/include/libopencm3/stm32/crc.h b/include/libopencm3/stm32/crc.h
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+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef LIBOPENCM3_CRC_H
+#define LIBOPENCM3_CRC_H
+
+#include <libopencm3/stm32/memorymap.h>
+#include <libopencm3/cm3/common.h>
+
+/* --- CRC registers ------------------------------------------------------- */
+
+/* Data register (CRC_DR) */
+#define CRC_DR MMIO32(CRC_BASE + 0x00)
+
+/* Independent data register (CRC_IDR) */
+#define CRC_IDR MMIO32(CRC_BASE + 0x04)
+
+/* Control register (CRC_CR) */
+#define CRC_CR MMIO32(CRC_BASE + 0x08)
+
+/* --- CRC_DR values ------------------------------------------------------- */
+
+/* Bits[31:0] Data register */
+
+/* --- CRC_IDR values ------------------------------------------------------ */
+
+/* Bits[7:0] General-purpose 8-bit data register bits */
+
+/* --- CRC_CR values ------------------------------------------------------- */
+
+/* RESET bit */
+#define CRC_CR_RESET (1 << 0)
+
+/* --- CRC function prototypes --------------------------------------------- */
+
+#endif