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/** @defgroup crc_defines CRC Defines
*
* @brief <b>libopencm3 Defined Constants and Types for the STM32F1xx CRC
* Generator </b>
*
* @ingroup STM32F0xx_defines
*
* @version 1.0.0
*
* @date 29 Jun 2013
*
*LGPL License Terms @ref lgpl_license
*/
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
*
* 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_common_all.h>
/*****************************************************************************/
/* Module definitions */
/*****************************************************************************/
/*****************************************************************************/
/* Register definitions */
/*****************************************************************************/
/* Initial CRC Value */
#define CRC_INIT MMIO32(CRC_BASE + 0x10)
/* CRC Polynomial */
#define CRC_POL MMIO32(CRC_BASE + 0x14)
/*****************************************************************************/
/* Register values */
/*****************************************************************************/
#define CRC_CR_REV_OUT (1 << 7)
#define CRC_CR_REV_IN_SHIFT 5
#define CRC_CR_REV_IN (3 << CRC_CR_REV_IN_SHIFT)
#define CRC_CR_REV_IN_NONE (0 << CRC_CR_REV_IN_SHIFT)
#define CRC_CR_REV_IN_BYTE (1 << CRC_CR_REV_IN_SHIFT)
#define CRC_CR_REV_IN_HALF (2 << CRC_CR_REV_IN_SHIFT)
#define CRC_CR_REV_IN_WORD (3 << CRC_CR_REV_IN_SHIFT)
#define CRC_CR_POLYSIZE_SHIFT 3
#define CRC_CR_POLYSIZE (3 << CRC_CR_POLYSIZE_SHIFT)
#define CRC_CR_POLYSIZE_32BIT (0 << CRC_CR_POLYSIZE_SHIFT)
#define CRC_CR_POLYSIZE_16BIT (1 << CRC_CR_POLYSIZE_SHIFT)
#define CRC_CR_POLYSIZE_8BIT (2 << CRC_CR_POLYSIZE_SHIFT)
#define CRC_CR_POLYSIZE_7BIT (3 << CRC_CR_POLYSIZE_SHIFT)
/* Default polynomial */
#define CRC_POL_DEFAULT 0x04C11DB7
/*****************************************************************************/
/* API definitions */
/*****************************************************************************/
/*****************************************************************************/
/* API Functions */
/*****************************************************************************/
BEGIN_DECLS
END_DECLS
/**@}*/
#endif
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