53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
/** @addtogroup flash_file FLASH peripheral API
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* @ingroup peripheral_apis
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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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void flash_prefetch_enable(void)
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{
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FLASH_ACR |= FLASH_ACR_PRFTEN;
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}
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void flash_prefetch_disable(void)
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{
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FLASH_ACR &= ~FLASH_ACR_PRFTEN;
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}
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void flash_set_ws(uint32_t ws)
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{
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uint32_t reg32;
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reg32 = FLASH_ACR;
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reg32 &= ~(FLASH_ACR_LATENCY_MASK << FLASH_ACR_LATENCY_SHIFT);
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reg32 |= (ws << FLASH_ACR_LATENCY_SHIFT);
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FLASH_ACR = reg32;
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}
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void flash_unlock_option_bytes(void)
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{
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FLASH_OPTKEYR = FLASH_OPTKEYR_KEY1;
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FLASH_OPTKEYR = FLASH_OPTKEYR_KEY2;
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}
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/**@}*/
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