text: /** @addtogroup flash_defines
   *
   * @author @htmlonly &copy; @endhtmlonly 2010
   * Thomas Otto <tommi@viadmin.org>
   * @author @htmlonly &copy; @endhtmlonly 2010
   * Mark Butler <mbutler@physics.otago.ac.nz>
   *
   */
  /*
   * 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>
   *
   * 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/>.
   */
  
  /*
   * For details see:
   * PM0081 Programming manual: STM32F40xxx and STM32F41xxx Flash programming
   * September 2011, Doc ID 018520 Rev 1
   * https://github.com/libopencm3/libopencm3-archive/blob/master/st_micro/DM00023388.pdf
   */
  
  /** @cond */
  #ifdef LIBOPENCM3_FLASH_H
  /** @endcond */
  #ifndef LIBOPENCM3_FLASH_COMMON_F24_H
  #define LIBOPENCM3_FLASH_COMMON_F24_H
  /**@{*/
  
  #include <libopencm3/stm32/common/flash_common_f234.h>
  
  /* --- FLASH registers ----------------------------------------------------- */
  
  #define FLASH_OPTCR			MMIO32(FLASH_MEM_INTERFACE_BASE + 0x14)
  #define FLASH_OPTCR1			MMIO32(FLASH_MEM_INTERFACE_BASE + 0x18)
  
  /* --- FLASH_ACR values ---------------------------------------------------- */
  
  #define FLASH_ACR_DCRST			(1 << 12)
  #define FLASH_ACR_ICRST			(1 << 11)
  #define FLASH_ACR_DCE			(1 << 10)
  #define FLASH_ACR_ICE			(1 << 9)
  #define FLASH_ACR_PRFTEN		(1 << 8)
  
  /* --- FLASH_SR values ----------------------------------------------------- */
  
  #define FLASH_SR_BSY			(1 << 16)
  #define FLASH_SR_PGSERR			(1 << 7)
  #define FLASH_SR_PGPERR			(1 << 6)
  #define FLASH_SR_PGAERR			(1 << 5)
  #define FLASH_SR_WRPERR			(1 << 4)
  #define FLASH_SR_OPERR			(1 << 1)
  #define FLASH_SR_EOP			(1 << 0)
  
  /* --- FLASH_CR values ----------------------------------------------------- */
  
  #define FLASH_CR_LOCK			(1 << 31)
  #define FLASH_CR_ERRIE			(1 << 25)
  #define FLASH_CR_EOPIE			(1 << 24)
  #define FLASH_CR_STRT			(1 << 16)
  #define FLASH_CR_MER			(1 << 2)
  #define FLASH_CR_SER			(1 << 1)
  #define FLASH_CR_PG			(1 << 0)
  #define FLASH_CR_SNB_SHIFT		3
  #define FLASH_CR_SNB_MASK		0x1f
  #define FLASH_CR_PROGRAM_MASK		0x3
  #define FLASH_CR_PROGRAM_SHIFT		8
  /** @defgroup flash_cr_program_width Flash programming width
  @ingroup flash_group
  
  @{*/
  #define FLASH_CR_PROGRAM_X8		0
  #define FLASH_CR_PROGRAM_X16		1
  #define FLASH_CR_PROGRAM_X32		2
  #define FLASH_CR_PROGRAM_X64		3
  /**@}*/
  
  /* --- FLASH_OPTCR values -------------------------------------------------- */
  
  /* FLASH_OPTCR[27:16]: nWRP */
  /* FLASH_OBR[15:8]: RDP */
  #define FLASH_OPTCR_NRST_STDBY		(1 << 7)
  #define FLASH_OPTCR_NRST_STOP		(1 << 6)
  #define FLASH_OPTCR_WDG_SW		(1 << 5)
  #define FLASH_OPTCR_OPTSTRT		(1 << 1)
  #define FLASH_OPTCR_OPTLOCK		(1 << 0)
  #define FLASH_OPTCR_BOR_LEVEL_3		(0x00 << 2)
  #define FLASH_OPTCR_BOR_LEVEL_2		(0x01 << 2)
  #define FLASH_OPTCR_BOR_LEVEL_1		(0x02 << 2)
  #define FLASH_OPTCR_BOR_OFF		(0x03 << 2)
  
  /* --- FLASH_OPTCR1 values ------------------------------------------------- */
  /* Only on some devices */
  /* FLASH_OPTCR1[27:16]: nWRP bank 2 */
  
  /* --- FLASH Keys -----------------------------------------------------------*/
  
  #define FLASH_OPTKEYR_KEY1		((uint32_t)0x08192a3b)
  #define FLASH_OPTKEYR_KEY2		((uint32_t)0x4c5d6e7f)
  
  /* --- Function prototypes ------------------------------------------------- */
  
  BEGIN_DECLS
  
  void flash_unlock_option_bytes(void);
  void flash_lock_option_bytes(void);
  void flash_clear_pgserr_flag(void);
  void flash_clear_wrperr_flag(void);
  void flash_clear_pgaerr_flag(void);
  void flash_dcache_enable(void);
  void flash_dcache_disable(void);
  void flash_icache_enable(void);
  void flash_icache_disable(void);
  void flash_prefetch_enable(void);
  void flash_prefetch_disable(void);
  void flash_dcache_reset(void);
  void flash_icache_reset(void);
  void flash_erase_all_sectors(uint32_t program_size);
  void flash_erase_sector(uint8_t sector, uint32_t program_size);
  void flash_program_double_word(uint32_t address, uint64_t data);
  void flash_program_word(uint32_t address, uint32_t data);
  void flash_program_half_word(uint32_t address, uint16_t data);
  void flash_program_byte(uint32_t address, uint8_t data);
  void flash_program(uint32_t address, uint8_t *data, uint32_t len);
  void flash_program_option_bytes(uint32_t data);
  
  END_DECLS
  /**@}*/
  
  #endif
  /** @cond */
  #else
  #warning "flash_common_f24.h should not be included direcitly,"
  #warning "only via flash.h"
  #endif
  /** @endcond */
  
  