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/** @defgroup crc_defines CRC Defines
*
* @brief <b>Defined Constants and Types for the STM32F3xx CRC Generator </b>
*
* @ingroup STM32F3xx_defines
*
* @version 1.0.0
*
* @date 18 August 2012
*
* 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>
/* --- CRC registers ------------------------------------------------------- */
/* Initial CRC value (CRC_INIT) */
#define CRC_INIT MMIO32(CRC_BASE + 0x10)
/* CRC polynomial (CRC_POL) */
#define CRC_POL MMIO32(CRC_BASE + 0x14)
/* --- CRC_CR values ------------------------------------------------------- */
/* REV_OUT: Reverse output data */
#define CRC_CR_REV_OUT (1 << 7)
/* REV_IN[1:0]: Reverse input data */
#define CRC_CR_REV_IN_NOT_AFFECTED (0x0 << 5)
#define CRC_CR_REV_IN_BYTE (0x1 << 5)
#define CRC_CR_REV_IN_HALF_WORD (0x2 << 5)
#define CRC_CR_REV_IN_WORD (0x3 << 5)
/* POLYSIZE[1:0]: Polynomial size */
#define CRC_CR_POLYSIZE_32 (0x0 << 3)
#define CRC_CR_POLYSIZE_16 (0x1 << 3)
#define CRC_CR_POLYSIZE_8 (0x2 << 3)
#define CRC_CR_POLYSIZE_7 (0x3 << 3)
/* --- CRC_INIT values ----------------------------------------------------- */
/* Bits 31:0 CRC_INIT: Programmable initial CRC value */
/* --- CRC_POL values ------------------------------------------------------ */
/* Bits 31:0 POL[31:0]: Programmable polynomial */
#endif
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