crc_common_all.c

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/** @addtogroup crc_file CRC peripheral API
@ingroup peripheral_apis
 
@author @htmlonly &copy; @endhtmlonly 2012 Karl Palsson <karlp@remake.is>
 
*/
 
/*
 * This file is part of the libopencm3 project.
 *
 * Copyright (C) 2012 Karl Palsson <karlp@remake.is>
 *
 * 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/>.
 */
 
#include <libopencm3/stm32/crc.h>
 
/**@{*/
 
void crc_reset(void)
{
        CRC_CR |= CRC_CR_RESET;
}
 
uint32_t crc_calculate(uint32_t data)
{
        CRC_DR = data;
        /* Data sheet says this blocks until it's ready.... */
        return CRC_DR;
}
 
uint32_t crc_calculate_block(uint32_t *datap, int size)
{
        int i;
 
        for (i = 0; i < size; i++) {
                CRC_DR = datap[i];
        }
 
        return CRC_DR;
}
/**@}*/