e2022f5884
to remove errors, duplications and inconsistencies. File lib/stm32/f1/pwr.c - all code removed as it duplicates that in common/pwr_common.c Remaining changes do not affect code. Compiles OK. TODO efm32 has no code so generates no modules TODO F2 needs pwr.c TODO L1 needs dma.h and dma.c
79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
/** @addtogroup crc_file
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@author @htmlonly © @endhtmlonly 2012 Karl Palsson <karlp@remake.is>
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2012 Karl Palsson <karlp@remake.is>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libopencm3/stm32/crc.h>
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/**@{*/
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/*-----------------------------------------------------------------------------*/
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/** @brief CRC Reset.
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Reset the CRC unit and forces the data register to all 1s.
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*/
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void crc_reset(void)
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{
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CRC_CR |= CRC_CR_RESET;
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}
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/*-----------------------------------------------------------------------------*/
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/** @brief CRC Calculate.
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Writes a data word to the register, the write operation stalling until the
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computation is complete.
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@param[in] data Unsigned int32.
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@returns int32 Computed CRC result
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*/
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u32 crc_calculate(u32 data)
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{
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CRC_DR = data;
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// Data sheet says this blocks until it's ready....
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return CRC_DR;
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}
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/*-----------------------------------------------------------------------------*/
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/** @brief CRC Calculate of a Block of Data.
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Writes data words consecutively to the register, the write operation stalling
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until the computation of each word is complete.
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@param[in] datap Unsigned int32. pointer to an array of 32 bit data words.
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@returns int32 Final computed CRC result
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*/
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u32 crc_calculate_block(u32 *datap, int size)
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{
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int i;
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for (i = 0; i < size; i++) {
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CRC_DR = datap[i];
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}
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return CRC_DR;
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}
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/**@}*/
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