4517ec81fd
Comments were not consistent, and this serves no purpose. There's no reason to explicitly lock the flash first before unlocking. These bits are simply set when the keys are written.
46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
/** @addtogroup flash_file
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*
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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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* 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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/**@{*/
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#include <libopencm3/stm32/flash.h>
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#include <libopencm3/stm32/common/flash_common_f.h>
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void flash_unlock(void)
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{
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/* Authorize the FPEC access. */
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FLASH_KEYR = FLASH_KEYR_KEY1;
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FLASH_KEYR = FLASH_KEYR_KEY2;
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}
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void flash_lock(void)
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{
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FLASH_CR |= FLASH_CR_LOCK;
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}
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/* The bit number for EOP moves sometimes, but it's always a write 1 to clear */
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void flash_clear_eop_flag(void)
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{
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FLASH_SR |= FLASH_SR_EOP;
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}
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