flash.c

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/** @defgroup flash_file FLASH peripheral API
 *
 * @ingroup peripheral_apis
 *
 * @brief <b>libopencm3 STM32L1xx FLASH</b>
 *
 * @version 1.0.0
 *
 * @author @htmlonly &copy; @endhtmlonly 2010
 * Thomas Otto <tommi@viadmin.org>
 * @author @htmlonly &copy; @endhtmlonly 2010
 * Mark Butler <mbutler@physics.otago.ac.nz>
 * @author @htmlonly &copy; @endhtmlonly 2012
 * Karl Palsson <karlp@tweak.net.au>
 *
 * @date 14 January 2014
 *
 * For the STM32L1xx, accessing FLASH memory is described briefly in
 * section 2.3.3 of the STM32L1xx Reference Manual.
 * For detailed programming information see:
 * PM0062 programming manual: STM32L1xxxx Flash and EEPROM programming
 * March 2012, Doc ID 16024 Rev 5
 *
 * LGPL License Terms @ref lgpl_license
 */
 
/*
 * This file is part of the libopencm3 project.
 *
 * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
 * Copyright (C) 2010 Mark Butler <mbutler@physics.otago.ac.nz>
 * Copyright (C) 2012-13 Karl Palsson <karlp@tweak.net.au>
 *
 * 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/flash.h>
 
/*---------------------------------------------------------------------------*/
/** @brief Enable 64 Bit Programming Mode
 
*/
 
void flash_64bit_enable(void)
{
        FLASH_ACR |= FLASH_ACR_ACC64;
}
 
/*---------------------------------------------------------------------------*/
/** @brief Enable 32 Bit Programming Mode
 
This mode is a low power mode. It must be used at low frequencies and does not
allow prefetch or wait states to be used.
*/
 
void flash_64bit_disable(void)
{
        FLASH_ACR &= ~FLASH_ACR_ACC64;
}
 
/**@}*/