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/******************************************************************************
* The MIT License
*
* Copyright (c) 2010 Perry Hung.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*****************************************************************************/
/**
* @file flash.h
* @brief STM32 Medium and high density Flash register map and setup
* routines
*/
#ifndef _FLASH_H_
#define _FLASH_H_
#ifdef __cplusplus
extern "C"{
#endif
/** Flash register map type */
typedef struct flash_reg_map {
__io uint32 ACR; /**< Access control register */
__io uint32 KEYR; /**< Key register */
__io uint32 OPTKEYR; /**< OPTKEY register */
__io uint32 SR; /**< Status register */
__io uint32 CR; /**< Control register */
__io uint32 AR; /**< Address register */
__io uint32 OBR; /**< Option byte register */
__io uint32 WRPR; /**< Write protection register */
} flash_reg_map;
/** Flash register map base pointer */
#define FLASH_BASE ((struct flash_reg_map*)0x40022000)
/*
* Register bit definitions
*/
/* Access control register */
#define FLASH_ACR_PRFTBS_BIT 5
#define FLASH_ACR_PRFTBE_BIT 4
#define FLASH_ACR_HLFCYA_BIT 3
#define FLASH_ACR_PRFTBS BIT(FLASH_ACR_PRFTBS_BIT)
#define FLASH_ACR_PRFTBE BIT(FLASH_ACR_PRFTBE_BIT)
#define FLASH_ACR_HLFCYA BIT(FLASH_ACR_HLFCYA_BIT)
#define FLASH_ACR_LATENCY 0x7
/* Status register */
#define FLASH_SR_EOP_BIT 5
#define FLASH_SR_WRPRTERR_BIT 4
#define FLASH_SR_PGERR_BIT 2
#define FLASH_SR_BSY_BIT 0
#define FLASH_SR_EOP BIT(FLASH_SR_EOP_BIT)
#define FLASH_SR_WRPRTERR BIT(FLASH_SR_WRPRTERR_BIT)
#define FLASH_SR_PGERR BIT(FLASH_SR_PGERR_BIT)
#define FLASH_SR_BSY BIT(FLASH_SR_BSY_BIT)
/* Control register */
#define FLASH_CR_EOPIE_BIT 12
#define FLASH_CR_ERRIE_BIT 10
#define FLASH_CR_OPTWRE_BIT 9
#define FLASH_CR_LOCK_BIT 7
#define FLASH_CR_STRT_BIT 6
#define FLASH_CR_OPTER_BIT 5
#define FLASH_CR_OPTPG_BIT 4
#define FLASH_CR_MER_BIT 2
#define FLASH_CR_PER_BIT 1
#define FLASH_CR_PG_BIT 0
#define FLASH_CR_EOPIE BIT(FLASH_CR_EOPIE_BIT)
#define FLASH_CR_ERRIE BIT(FLASH_CR_ERRIE_BIT)
#define FLASH_CR_OPTWRE BIT(FLASH_CR_OPTWRE_BIT)
#define FLASH_CR_LOCK BIT(FLASH_CR_LOCK_BIT)
#define FLASH_CR_STRT BIT(FLASH_CR_STRT_BIT)
#define FLASH_CR_OPTER BIT(FLASH_CR_OPTER_BIT)
#define FLASH_CR_OPTPG BIT(FLASH_CR_OPTPG_BIT)
#define FLASH_CR_MER BIT(FLASH_CR_MER_BIT)
#define FLASH_CR_PER BIT(FLASH_CR_PER_BIT)
#define FLASH_CR_PG BIT(FLASH_CR_PG_BIT)
/* Option byte register */
#define FLASH_OBR_nRST_STDBY_BIT 4
#define FLASH_OBR_nRST_STOP_BIT 3
#define FLASH_OBR_WDG_SW_BIT 2
#define FLASH_OBR_RDPRT_BIT 1
#define FLASH_OBR_OPTERR_BIT 0
#define FLASH_OBR_DATA1 (0xFF << 18)
#define FLASH_OBR_DATA0 (0xFF << 10)
#define FLASH_OBR_USER 0x3FF
#define FLASH_OBR_nRST_STDBY BIT(FLASH_OBR_nRST_STDBY_BIT)
#define FLASH_OBR_nRST_STOP BIT(FLASH_OBR_nRST_STOP_BIT)
#define FLASH_OBR_WDG_SW BIT(FLASH_OBR_WDG_SW_BIT)
#define FLASH_OBR_RDPRT BIT(FLASH_OBR_RDPRT_BIT)
#define FLASH_OBR_OPTERR BIT(FLASH_OBR_OPTERR_BIT)
/*
* Setup routines
*/
#define FLASH_WAIT_STATE_0 0x0
#define FLASH_WAIT_STATE_1 0x1
#define FLASH_WAIT_STATE_2 0x2
void flash_enable_prefetch(void);
void flash_set_latency(uint32 wait_states);
#ifdef __cplusplus
}
#endif
#endif
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