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FlashWriter/stm32f4xx_flash.c@0:571a1835428e, 2021-01-25 (annotated)

Committer:: shaorui
Date:: Mon Jan 25 08:36:48 2021 +0000
Revision:: 0:571a1835428e

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User	Revision	Line number	New contents of line
shaorui	0:571a1835428e	1	/**
shaorui	0:571a1835428e	2	******************************************************************************
shaorui	0:571a1835428e	3	* @file stm32f4xx_flash.c
shaorui	0:571a1835428e	4	* @author MCD Application Team
shaorui	0:571a1835428e	5	* @version V1.7.1
shaorui	0:571a1835428e	6	* @date 20-May-2016
shaorui	0:571a1835428e	7	* @brief This file provides firmware functions to manage the following
shaorui	0:571a1835428e	8	* functionalities of the FLASH peripheral:
shaorui	0:571a1835428e	9	* + FLASH Interface configuration
shaorui	0:571a1835428e	10	* + FLASH Memory Programming
shaorui	0:571a1835428e	11	* + Option Bytes Programming
shaorui	0:571a1835428e	12	* + Interrupts and flags management
shaorui	0:571a1835428e	13	*
shaorui	0:571a1835428e	14	@verbatim
shaorui	0:571a1835428e	15	===============================================================================
shaorui	0:571a1835428e	16	##### How to use this driver #####
shaorui	0:571a1835428e	17	===============================================================================
shaorui	0:571a1835428e	18	[..]
shaorui	0:571a1835428e	19	This driver provides functions to configure and program the FLASH memory
shaorui	0:571a1835428e	20	of all STM32F4xx devices. These functions are split in 4 groups:
shaorui	0:571a1835428e	21
shaorui	0:571a1835428e	22	(#) FLASH Interface configuration functions: this group includes the
shaorui	0:571a1835428e	23	management of the following features:
shaorui	0:571a1835428e	24	(++) Set the latency
shaorui	0:571a1835428e	25	(++) Enable/Disable the prefetch buffer
shaorui	0:571a1835428e	26	(++) Enable/Disable the Instruction cache and the Data cache
shaorui	0:571a1835428e	27	(++) Reset the Instruction cache and the Data cache
shaorui	0:571a1835428e	28
shaorui	0:571a1835428e	29	(#) FLASH Memory Programming functions: this group includes all needed
shaorui	0:571a1835428e	30	functions to erase and program the main memory:
shaorui	0:571a1835428e	31	(++) Lock and Unlock the FLASH interface
shaorui	0:571a1835428e	32	(++) Erase function: Erase sector, erase all sectors
shaorui	0:571a1835428e	33	(++) Program functions: byte, half word, word and double word
shaorui	0:571a1835428e	34
shaorui	0:571a1835428e	35	(#) Option Bytes Programming functions: this group includes all needed
shaorui	0:571a1835428e	36	functions to manage the Option Bytes:
shaorui	0:571a1835428e	37	(++) Set/Reset the write protection
shaorui	0:571a1835428e	38	(++) Set the Read protection Level
shaorui	0:571a1835428e	39	(++) Set the BOR level
shaorui	0:571a1835428e	40	(++) Program the user Option Bytes
shaorui	0:571a1835428e	41	(++) Launch the Option Bytes loader
shaorui	0:571a1835428e	42
shaorui	0:571a1835428e	43	(#) Interrupts and flags management functions: this group
shaorui	0:571a1835428e	44	includes all needed functions to:
shaorui	0:571a1835428e	45	(++) Enable/Disable the FLASH interrupt sources
shaorui	0:571a1835428e	46	(++) Get flags status
shaorui	0:571a1835428e	47	(++) Clear flags
shaorui	0:571a1835428e	48	(++) Get FLASH operation status
shaorui	0:571a1835428e	49	(++) Wait for last FLASH operation
shaorui	0:571a1835428e	50	@endverbatim
shaorui	0:571a1835428e	51	******************************************************************************
shaorui	0:571a1835428e	52	* @attention
shaorui	0:571a1835428e	53	*
shaorui	0:571a1835428e	54	* <h2><center>© COPYRIGHT 2016 STMicroelectronics</center></h2>
shaorui	0:571a1835428e	55	*
shaorui	0:571a1835428e	56	* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
shaorui	0:571a1835428e	57	* You may not use this file except in compliance with the License.
shaorui	0:571a1835428e	58	* You may obtain a copy of the License at:
shaorui	0:571a1835428e	59	*
shaorui	0:571a1835428e	60	* http://www.st.com/software_license_agreement_liberty_v2
shaorui	0:571a1835428e	61	*
shaorui	0:571a1835428e	62	* Unless required by applicable law or agreed to in writing, software
shaorui	0:571a1835428e	63	* distributed under the License is distributed on an "AS IS" BASIS,
shaorui	0:571a1835428e	64	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
shaorui	0:571a1835428e	65	* See the License for the specific language governing permissions and
shaorui	0:571a1835428e	66	* limitations under the License.
shaorui	0:571a1835428e	67	*
shaorui	0:571a1835428e	68	******************************************************************************
shaorui	0:571a1835428e	69	*/
shaorui	0:571a1835428e	70
shaorui	0:571a1835428e	71	/* Includes ------------------------------------------------------------------*/
shaorui	0:571a1835428e	72	#include "stm32f4xx_flash.h"
shaorui	0:571a1835428e	73
shaorui	0:571a1835428e	74	/** @addtogroup STM32F4xx_StdPeriph_Driver
shaorui	0:571a1835428e	75	* @{
shaorui	0:571a1835428e	76	*/
shaorui	0:571a1835428e	77
shaorui	0:571a1835428e	78	/** @defgroup FLASH
shaorui	0:571a1835428e	79	* @brief FLASH driver modules
shaorui	0:571a1835428e	80	* @{
shaorui	0:571a1835428e	81	*/
shaorui	0:571a1835428e	82
shaorui	0:571a1835428e	83	/* Private typedef -----------------------------------------------------------*/
shaorui	0:571a1835428e	84	/* Private define ------------------------------------------------------------*/
shaorui	0:571a1835428e	85	#define SECTOR_MASK ((uint32_t)0xFFFFFF07)
shaorui	0:571a1835428e	86
shaorui	0:571a1835428e	87	/* Private macro -------------------------------------------------------------*/
shaorui	0:571a1835428e	88	/* Private variables ---------------------------------------------------------*/
shaorui	0:571a1835428e	89	/* Private function prototypes -----------------------------------------------*/
shaorui	0:571a1835428e	90	/* Private functions ---------------------------------------------------------*/
shaorui	0:571a1835428e	91
shaorui	0:571a1835428e	92	/** @defgroup FLASH_Private_Functions
shaorui	0:571a1835428e	93	* @{
shaorui	0:571a1835428e	94	*/
shaorui	0:571a1835428e	95
shaorui	0:571a1835428e	96	/** @defgroup FLASH_Group1 FLASH Interface configuration functions
shaorui	0:571a1835428e	97	* @brief FLASH Interface configuration functions
shaorui	0:571a1835428e	98	*
shaorui	0:571a1835428e	99
shaorui	0:571a1835428e	100	@verbatim
shaorui	0:571a1835428e	101	===============================================================================
shaorui	0:571a1835428e	102	##### FLASH Interface configuration functions #####
shaorui	0:571a1835428e	103	===============================================================================
shaorui	0:571a1835428e	104	[..]
shaorui	0:571a1835428e	105	This group includes the following functions:
shaorui	0:571a1835428e	106	(+) void FLASH_SetLatency(uint32_t FLASH_Latency)
shaorui	0:571a1835428e	107	To correctly read data from FLASH memory, the number of wait states (LATENCY)
shaorui	0:571a1835428e	108	must be correctly programmed according to the frequency of the CPU clock
shaorui	0:571a1835428e	109	(HCLK) and the supply voltage of the device.
shaorui	0:571a1835428e	110	[..]
shaorui	0:571a1835428e	111	For STM32F405xx/07xx and STM32F415xx/17xx devices
shaorui	0:571a1835428e	112	+-------------------------------------------------------------------------------------+
shaorui	0:571a1835428e	113	\| Latency \| HCLK clock frequency (MHz) \|
shaorui	0:571a1835428e	114	\| \|---------------------------------------------------------------------\|
shaorui	0:571a1835428e	115	\| \| voltage range \| voltage range \| voltage range \| voltage range \|
shaorui	0:571a1835428e	116	\| \| 2.7 V - 3.6 V \| 2.4 V - 2.7 V \| 2.1 V - 2.4 V \| 1.8 V - 2.1 V \|
shaorui	0:571a1835428e	117	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	118	\|0WS(1CPU cycle)\|0 < HCLK <= 30 \|0 < HCLK <= 24 \|0 < HCLK <= 22 \|0 < HCLK <= 20 \|
shaorui	0:571a1835428e	119	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	120	\|1WS(2CPU cycle)\|30 < HCLK <= 60 \|24 < HCLK <= 48 \|22 < HCLK <= 44 \|20 < HCLK <= 40 \|
shaorui	0:571a1835428e	121	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	122	\|2WS(3CPU cycle)\|60 < HCLK <= 90 \|48 < HCLK <= 72 \|44 < HCLK <= 66 \|40 < HCLK <= 60 \|
shaorui	0:571a1835428e	123	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	124	\|3WS(4CPU cycle)\|90 < HCLK <= 120\|72 < HCLK <= 96 \|66 < HCLK <= 88 \|60 < HCLK <= 80 \|
shaorui	0:571a1835428e	125	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	126	\|4WS(5CPU cycle)\|120< HCLK <= 150\|96 < HCLK <= 120\|88 < HCLK <= 110 \|80 < HCLK <= 100 \|
shaorui	0:571a1835428e	127	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	128	\|5WS(6CPU cycle)\|150< HCLK <= 168\|120< HCLK <= 144\|110 < HCLK <= 132\|100 < HCLK <= 120\|
shaorui	0:571a1835428e	129	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	130	\|6WS(7CPU cycle)\| NA \|144< HCLK <= 168\|132 < HCLK <= 154\|120 < HCLK <= 140\|
shaorui	0:571a1835428e	131	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	132	\|7WS(8CPU cycle)\| NA \| NA \|154 < HCLK <= 168\|140 < HCLK <= 160\|
shaorui	0:571a1835428e	133	+---------------\|----------------\|----------------\|-----------------\|-----------------+
shaorui	0:571a1835428e	134
shaorui	0:571a1835428e	135	[..]
shaorui	0:571a1835428e	136	For STM32F42xxx/43xxx devices
shaorui	0:571a1835428e	137	+-------------------------------------------------------------------------------------+
shaorui	0:571a1835428e	138	\| Latency \| HCLK clock frequency (MHz) \|
shaorui	0:571a1835428e	139	\| \|---------------------------------------------------------------------\|
shaorui	0:571a1835428e	140	\| \| voltage range \| voltage range \| voltage range \| voltage range \|
shaorui	0:571a1835428e	141	\| \| 2.7 V - 3.6 V \| 2.4 V - 2.7 V \| 2.1 V - 2.4 V \| 1.8 V - 2.1 V \|
shaorui	0:571a1835428e	142	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	143	\|0WS(1CPU cycle)\|0 < HCLK <= 30 \|0 < HCLK <= 24 \|0 < HCLK <= 22 \|0 < HCLK <= 20 \|
shaorui	0:571a1835428e	144	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	145	\|1WS(2CPU cycle)\|30 < HCLK <= 60 \|24 < HCLK <= 48 \|22 < HCLK <= 44 \|20 < HCLK <= 40 \|
shaorui	0:571a1835428e	146	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	147	\|2WS(3CPU cycle)\|60 < HCLK <= 90 \|48 < HCLK <= 72 \|44 < HCLK <= 66 \|40 < HCLK <= 60 \|
shaorui	0:571a1835428e	148	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	149	\|3WS(4CPU cycle)\|90 < HCLK <= 120\|72 < HCLK <= 96 \|66 < HCLK <= 88 \|60 < HCLK <= 80 \|
shaorui	0:571a1835428e	150	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	151	\|4WS(5CPU cycle)\|120< HCLK <= 150\|96 < HCLK <= 120\|88 < HCLK <= 110 \|80 < HCLK <= 100 \|
shaorui	0:571a1835428e	152	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	153	\|5WS(6CPU cycle)\|120< HCLK <= 180\|120< HCLK <= 144\|110 < HCLK <= 132\|100 < HCLK <= 120\|
shaorui	0:571a1835428e	154	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	155	\|6WS(7CPU cycle)\| NA \|144< HCLK <= 168\|132 < HCLK <= 154\|120 < HCLK <= 140\|
shaorui	0:571a1835428e	156	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	157	\|7WS(8CPU cycle)\| NA \|168< HCLK <= 180\|154 < HCLK <= 176\|140 < HCLK <= 160\|
shaorui	0:571a1835428e	158	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	159	\|8WS(9CPU cycle)\| NA \| NA \|176 < HCLK <= 180\|160 < HCLK <= 168\|
shaorui	0:571a1835428e	160	+-------------------------------------------------------------------------------------+
shaorui	0:571a1835428e	161
shaorui	0:571a1835428e	162	[..]
shaorui	0:571a1835428e	163	For STM32F401x devices
shaorui	0:571a1835428e	164	+-------------------------------------------------------------------------------------+
shaorui	0:571a1835428e	165	\| Latency \| HCLK clock frequency (MHz) \|
shaorui	0:571a1835428e	166	\| \|---------------------------------------------------------------------\|
shaorui	0:571a1835428e	167	\| \| voltage range \| voltage range \| voltage range \| voltage range \|
shaorui	0:571a1835428e	168	\| \| 2.7 V - 3.6 V \| 2.4 V - 2.7 V \| 2.1 V - 2.4 V \| 1.8 V - 2.1 V \|
shaorui	0:571a1835428e	169	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	170	\|0WS(1CPU cycle)\|0 < HCLK <= 30 \|0 < HCLK <= 24 \|0 < HCLK <= 22 \|0 < HCLK <= 20 \|
shaorui	0:571a1835428e	171	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	172	\|1WS(2CPU cycle)\|30 < HCLK <= 60 \|24 < HCLK <= 48 \|22 < HCLK <= 44 \|20 < HCLK <= 40 \|
shaorui	0:571a1835428e	173	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	174	\|2WS(3CPU cycle)\|60 < HCLK <= 84 \|48 < HCLK <= 72 \|44 < HCLK <= 66 \|40 < HCLK <= 60 \|
shaorui	0:571a1835428e	175	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	176	\|3WS(4CPU cycle)\| NA \|72 < HCLK <= 84 \|66 < HCLK <= 84 \|60 < HCLK <= 80 \|
shaorui	0:571a1835428e	177	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	178	\|4WS(5CPU cycle)\| NA \| NA \| NA \|80 < HCLK <= 84 \|
shaorui	0:571a1835428e	179	+-------------------------------------------------------------------------------------+
shaorui	0:571a1835428e	180
shaorui	0:571a1835428e	181	[..]
shaorui	0:571a1835428e	182	For STM32F410xx/STM32F411xE devices
shaorui	0:571a1835428e	183	+-------------------------------------------------------------------------------------+
shaorui	0:571a1835428e	184	\| Latency \| HCLK clock frequency (MHz) \|
shaorui	0:571a1835428e	185	\| \|---------------------------------------------------------------------\|
shaorui	0:571a1835428e	186	\| \| voltage range \| voltage range \| voltage range \| voltage range \|
shaorui	0:571a1835428e	187	\| \| 2.7 V - 3.6 V \| 2.4 V - 2.7 V \| 2.1 V - 2.4 V \| 1.8 V - 2.1 V \|
shaorui	0:571a1835428e	188	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	189	\|0WS(1CPU cycle)\|0 < HCLK <= 30 \|0 < HCLK <= 24 \|0 < HCLK <= 18 \|0 < HCLK <= 16 \|
shaorui	0:571a1835428e	190	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	191	\|1WS(2CPU cycle)\|30 < HCLK <= 64 \|24 < HCLK <= 48 \|18 < HCLK <= 36 \|16 < HCLK <= 32 \|
shaorui	0:571a1835428e	192	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	193	\|2WS(3CPU cycle)\|64 < HCLK <= 90 \|48 < HCLK <= 72 \|36 < HCLK <= 54 \|32 < HCLK <= 48 \|
shaorui	0:571a1835428e	194	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	195	\|3WS(4CPU cycle)\|90 < HCLK <= 100\|72 < HCLK <= 96 \|54 < HCLK <= 72 \|48 < HCLK <= 64 \|
shaorui	0:571a1835428e	196	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	197	\|4WS(5CPU cycle)\| NA \|96 < HCLK <= 100\|72 < HCLK <= 90 \|64 < HCLK <= 80 \|
shaorui	0:571a1835428e	198	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	199	\|5WS(6CPU cycle)\| NA \| NA \|90 < HCLK <= 100 \|80 < HCLK <= 96 \|
shaorui	0:571a1835428e	200	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|
shaorui	0:571a1835428e	201	\|6WS(7CPU cycle)\| NA \| NA \| NA \|96 < HCLK <= 100 \|
shaorui	0:571a1835428e	202	+-------------------------------------------------------------------------------------+
shaorui	0:571a1835428e	203
shaorui	0:571a1835428e	204	[..]
shaorui	0:571a1835428e	205	+-------------------------------------------------------------------------------------------------------------------+
shaorui	0:571a1835428e	206	\| \| voltage range \| voltage range \| voltage range \| voltage range \| voltage range 2.7 V - 3.6 V \|
shaorui	0:571a1835428e	207	\| \| 2.7 V - 3.6 V \| 2.4 V - 2.7 V \| 2.1 V - 2.4 V \| 1.8 V - 2.1 V \| with External Vpp = 9V \|
shaorui	0:571a1835428e	208	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|-----------------------------\|
shaorui	0:571a1835428e	209	\|Max Parallelism\| x32 \| x16 \| x8 \| x64 \|
shaorui	0:571a1835428e	210	\|---------------\|----------------\|----------------\|-----------------\|-----------------\|-----------------------------\|
shaorui	0:571a1835428e	211	\|PSIZE[1:0] \| 10 \| 01 \| 00 \| 11 \|
shaorui	0:571a1835428e	212	+-------------------------------------------------------------------------------------------------------------------+
shaorui	0:571a1835428e	213
shaorui	0:571a1835428e	214	-@- On STM32F405xx/407xx and STM32F415xx/417xx devices:
shaorui	0:571a1835428e	215	(++) when VOS = '0' Scale 2 mode, the maximum value of fHCLK = 144MHz.
shaorui	0:571a1835428e	216	(++) when VOS = '1' Scale 1 mode, the maximum value of fHCLK = 168MHz.
shaorui	0:571a1835428e	217	[..]
shaorui	0:571a1835428e	218	On STM32F42xxx/43xxx devices:
shaorui	0:571a1835428e	219	(++) when VOS[1:0] = '0x01' Scale 3 mode, the maximum value of fHCLK is 120MHz.
shaorui	0:571a1835428e	220	(++) when VOS[1:0] = '0x10' Scale 2 mode, the maximum value of fHCLK is 144MHz if OverDrive OFF and 168MHz if OverDrive ON.
shaorui	0:571a1835428e	221	(++) when VOS[1:0] = '0x11' Scale 1 mode, the maximum value of fHCLK is 168MHz if OverDrive OFF and 180MHz if OverDrive ON.
shaorui	0:571a1835428e	222	[..]
shaorui	0:571a1835428e	223	On STM32F401x devices:
shaorui	0:571a1835428e	224	(++) when VOS[1:0] = '0x01' Scale 3 mode, the maximum value of fHCLK is 60MHz.
shaorui	0:571a1835428e	225	(++) when VOS[1:0] = '0x10' Scale 2 mode, the maximum value of fHCLK is 84MHz.
shaorui	0:571a1835428e	226	[..]
shaorui	0:571a1835428e	227	On STM32F410xx/STM32F411xE devices:
shaorui	0:571a1835428e	228	(++) when VOS[1:0] = '0x01' Scale 3 mode, the maximum value of fHCLK is 64MHz.
shaorui	0:571a1835428e	229	(++) when VOS[1:0] = '0x10' Scale 2 mode, the maximum value of fHCLK is 84MHz.
shaorui	0:571a1835428e	230	(++) when VOS[1:0] = '0x11' Scale 1 mode, the maximum value of fHCLK is 100MHz.
shaorui	0:571a1835428e	231
shaorui	0:571a1835428e	232	For more details please refer product DataSheet
shaorui	0:571a1835428e	233	You can use PWR_MainRegulatorModeConfig() function to control VOS bits.
shaorui	0:571a1835428e	234
shaorui	0:571a1835428e	235	(+) void FLASH_PrefetchBufferCmd(FunctionalState NewState)
shaorui	0:571a1835428e	236	(+) void FLASH_InstructionCacheCmd(FunctionalState NewState)
shaorui	0:571a1835428e	237	(+) void FLASH_DataCacheCmd(FunctionalState NewState)
shaorui	0:571a1835428e	238	(+) void FLASH_InstructionCacheReset(void)
shaorui	0:571a1835428e	239	(+) void FLASH_DataCacheReset(void)
shaorui	0:571a1835428e	240
shaorui	0:571a1835428e	241	[..]
shaorui	0:571a1835428e	242	The unlock sequence is not needed for these functions.
shaorui	0:571a1835428e	243
shaorui	0:571a1835428e	244	@endverbatim
shaorui	0:571a1835428e	245	* @{
shaorui	0:571a1835428e	246	*/
shaorui	0:571a1835428e	247
shaorui	0:571a1835428e	248	/**
shaorui	0:571a1835428e	249	* @brief Sets the code latency value.
shaorui	0:571a1835428e	250	* @param FLASH_Latency: specifies the FLASH Latency value.
shaorui	0:571a1835428e	251	* This parameter can be one of the following values:
shaorui	0:571a1835428e	252	* @arg FLASH_Latency_0: FLASH Zero Latency cycle
shaorui	0:571a1835428e	253	* @arg FLASH_Latency_1: FLASH One Latency cycle
shaorui	0:571a1835428e	254	* @arg FLASH_Latency_2: FLASH Two Latency cycles
shaorui	0:571a1835428e	255	* @arg FLASH_Latency_3: FLASH Three Latency cycles
shaorui	0:571a1835428e	256	* @arg FLASH_Latency_4: FLASH Four Latency cycles
shaorui	0:571a1835428e	257	* @arg FLASH_Latency_5: FLASH Five Latency cycles
shaorui	0:571a1835428e	258	* @arg FLASH_Latency_6: FLASH Six Latency cycles
shaorui	0:571a1835428e	259	* @arg FLASH_Latency_7: FLASH Seven Latency cycles
shaorui	0:571a1835428e	260	* @arg FLASH_Latency_8: FLASH Eight Latency cycles
shaorui	0:571a1835428e	261	* @arg FLASH_Latency_9: FLASH Nine Latency cycles
shaorui	0:571a1835428e	262	* @arg FLASH_Latency_10: FLASH Teen Latency cycles
shaorui	0:571a1835428e	263	* @arg FLASH_Latency_11: FLASH Eleven Latency cycles
shaorui	0:571a1835428e	264	* @arg FLASH_Latency_12: FLASH Twelve Latency cycles
shaorui	0:571a1835428e	265	* @arg FLASH_Latency_13: FLASH Thirteen Latency cycles
shaorui	0:571a1835428e	266	* @arg FLASH_Latency_14: FLASH Fourteen Latency cycles
shaorui	0:571a1835428e	267	* @arg FLASH_Latency_15: FLASH Fifteen Latency cycles
shaorui	0:571a1835428e	268	*
shaorui	0:571a1835428e	269	* @note For STM32F405xx/407xx, STM32F415xx/417xx, STM32F401xx/411xE and STM32F412xG devices
shaorui	0:571a1835428e	270	* this parameter can be a value between FLASH_Latency_0 and FLASH_Latency_7.
shaorui	0:571a1835428e	271	*
shaorui	0:571a1835428e	272	* @note For STM32F42xxx/43xxx devices this parameter can be a value between
shaorui	0:571a1835428e	273	* FLASH_Latency_0 and FLASH_Latency_15.
shaorui	0:571a1835428e	274	*
shaorui	0:571a1835428e	275	* @retval None
shaorui	0:571a1835428e	276	*/
shaorui	0:571a1835428e	277	void FLASH_SetLatency(uint32_t FLASH_Latency)
shaorui	0:571a1835428e	278	{
shaorui	0:571a1835428e	279	/* Check the parameters */
shaorui	0:571a1835428e	280	assert_param(IS_FLASH_LATENCY(FLASH_Latency));
shaorui	0:571a1835428e	281
shaorui	0:571a1835428e	282	/* Perform Byte access to FLASH_ACR[8:0] to set the Latency value */
shaorui	0:571a1835428e	283	(__IO uint8_t )ACR_BYTE0_ADDRESS = (uint8_t)FLASH_Latency;
shaorui	0:571a1835428e	284	}
shaorui	0:571a1835428e	285
shaorui	0:571a1835428e	286	/**
shaorui	0:571a1835428e	287	* @brief Enables or disables the Prefetch Buffer.
shaorui	0:571a1835428e	288	* @param NewState: new state of the Prefetch Buffer.
shaorui	0:571a1835428e	289	* This parameter can be: ENABLE or DISABLE.
shaorui	0:571a1835428e	290	* @retval None
shaorui	0:571a1835428e	291	*/
shaorui	0:571a1835428e	292	void FLASH_PrefetchBufferCmd(FunctionalState NewState)
shaorui	0:571a1835428e	293	{
shaorui	0:571a1835428e	294	/* Check the parameters */
shaorui	0:571a1835428e	295	assert_param(IS_FUNCTIONAL_STATE(NewState));
shaorui	0:571a1835428e	296
shaorui	0:571a1835428e	297	/* Enable or disable the Prefetch Buffer */
shaorui	0:571a1835428e	298	if(NewState != DISABLE)
shaorui	0:571a1835428e	299	{
shaorui	0:571a1835428e	300	FLASH->ACR \|= FLASH_ACR_PRFTEN;
shaorui	0:571a1835428e	301	}
shaorui	0:571a1835428e	302	else
shaorui	0:571a1835428e	303	{
shaorui	0:571a1835428e	304	FLASH->ACR &= (~FLASH_ACR_PRFTEN);
shaorui	0:571a1835428e	305	}
shaorui	0:571a1835428e	306	}
shaorui	0:571a1835428e	307
shaorui	0:571a1835428e	308	/**
shaorui	0:571a1835428e	309	* @brief Enables or disables the Instruction Cache feature.
shaorui	0:571a1835428e	310	* @param NewState: new state of the Instruction Cache.
shaorui	0:571a1835428e	311	* This parameter can be: ENABLE or DISABLE.
shaorui	0:571a1835428e	312	* @retval None
shaorui	0:571a1835428e	313	*/
shaorui	0:571a1835428e	314	void FLASH_InstructionCacheCmd(FunctionalState NewState)
shaorui	0:571a1835428e	315	{
shaorui	0:571a1835428e	316	/* Check the parameters */
shaorui	0:571a1835428e	317	assert_param(IS_FUNCTIONAL_STATE(NewState));
shaorui	0:571a1835428e	318
shaorui	0:571a1835428e	319	if(NewState != DISABLE)
shaorui	0:571a1835428e	320	{
shaorui	0:571a1835428e	321	FLASH->ACR \|= FLASH_ACR_ICEN;
shaorui	0:571a1835428e	322	}
shaorui	0:571a1835428e	323	else
shaorui	0:571a1835428e	324	{
shaorui	0:571a1835428e	325	FLASH->ACR &= (~FLASH_ACR_ICEN);
shaorui	0:571a1835428e	326	}
shaorui	0:571a1835428e	327	}
shaorui	0:571a1835428e	328
shaorui	0:571a1835428e	329	/**
shaorui	0:571a1835428e	330	* @brief Enables or disables the Data Cache feature.
shaorui	0:571a1835428e	331	* @param NewState: new state of the Data Cache.
shaorui	0:571a1835428e	332	* This parameter can be: ENABLE or DISABLE.
shaorui	0:571a1835428e	333	* @retval None
shaorui	0:571a1835428e	334	*/
shaorui	0:571a1835428e	335	void FLASH_DataCacheCmd(FunctionalState NewState)
shaorui	0:571a1835428e	336	{
shaorui	0:571a1835428e	337	/* Check the parameters */
shaorui	0:571a1835428e	338	assert_param(IS_FUNCTIONAL_STATE(NewState));
shaorui	0:571a1835428e	339
shaorui	0:571a1835428e	340	if(NewState != DISABLE)
shaorui	0:571a1835428e	341	{
shaorui	0:571a1835428e	342	FLASH->ACR \|= FLASH_ACR_DCEN;
shaorui	0:571a1835428e	343	}
shaorui	0:571a1835428e	344	else
shaorui	0:571a1835428e	345	{
shaorui	0:571a1835428e	346	FLASH->ACR &= (~FLASH_ACR_DCEN);
shaorui	0:571a1835428e	347	}
shaorui	0:571a1835428e	348	}
shaorui	0:571a1835428e	349
shaorui	0:571a1835428e	350	/**
shaorui	0:571a1835428e	351	* @brief Resets the Instruction Cache.
shaorui	0:571a1835428e	352	* @note This function must be used only when the Instruction Cache is disabled.
shaorui	0:571a1835428e	353	* @param None
shaorui	0:571a1835428e	354	* @retval None
shaorui	0:571a1835428e	355	*/
shaorui	0:571a1835428e	356	void FLASH_InstructionCacheReset(void)
shaorui	0:571a1835428e	357	{
shaorui	0:571a1835428e	358	FLASH->ACR \|= FLASH_ACR_ICRST;
shaorui	0:571a1835428e	359	}
shaorui	0:571a1835428e	360
shaorui	0:571a1835428e	361	/**
shaorui	0:571a1835428e	362	* @brief Resets the Data Cache.
shaorui	0:571a1835428e	363	* @note This function must be used only when the Data Cache is disabled.
shaorui	0:571a1835428e	364	* @param None
shaorui	0:571a1835428e	365	* @retval None
shaorui	0:571a1835428e	366	*/
shaorui	0:571a1835428e	367	void FLASH_DataCacheReset(void)
shaorui	0:571a1835428e	368	{
shaorui	0:571a1835428e	369	FLASH->ACR \|= FLASH_ACR_DCRST;
shaorui	0:571a1835428e	370	}
shaorui	0:571a1835428e	371
shaorui	0:571a1835428e	372	/**
shaorui	0:571a1835428e	373	* @}
shaorui	0:571a1835428e	374	*/
shaorui	0:571a1835428e	375
shaorui	0:571a1835428e	376	/** @defgroup FLASH_Group2 FLASH Memory Programming functions
shaorui	0:571a1835428e	377	* @brief FLASH Memory Programming functions
shaorui	0:571a1835428e	378	*
shaorui	0:571a1835428e	379	@verbatim
shaorui	0:571a1835428e	380	===============================================================================
shaorui	0:571a1835428e	381	##### FLASH Memory Programming functions #####
shaorui	0:571a1835428e	382	===============================================================================
shaorui	0:571a1835428e	383	[..]
shaorui	0:571a1835428e	384	This group includes the following functions:
shaorui	0:571a1835428e	385	(+) void FLASH_Unlock(void)
shaorui	0:571a1835428e	386	(+) void FLASH_Lock(void)
shaorui	0:571a1835428e	387	(+) FLASH_Status FLASH_EraseSector(uint32_t FLASH_Sector, uint8_t VoltageRange)
shaorui	0:571a1835428e	388	(+) FLASH_Status FLASH_EraseAllSectors(uint8_t VoltageRange)
shaorui	0:571a1835428e	389	(+) FLASH_Status FLASH_ProgramDoubleWord(uint32_t Address, uint64_t Data)
shaorui	0:571a1835428e	390	(+) FLASH_Status FLASH_ProgramWord(uint32_t Address, uint32_t Data)
shaorui	0:571a1835428e	391	(+) FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data)
shaorui	0:571a1835428e	392	(+) FLASH_Status FLASH_ProgramByte(uint32_t Address, uint8_t Data)
shaorui	0:571a1835428e	393	The following functions can be used only for STM32F42xxx/43xxx devices.
shaorui	0:571a1835428e	394	(+) FLASH_Status FLASH_EraseAllBank1Sectors(uint8_t VoltageRange)
shaorui	0:571a1835428e	395	(+) FLASH_Status FLASH_EraseAllBank2Sectors(uint8_t VoltageRange)
shaorui	0:571a1835428e	396	[..]
shaorui	0:571a1835428e	397	Any operation of erase or program should follow these steps:
shaorui	0:571a1835428e	398	(#) Call the FLASH_Unlock() function to enable the FLASH control register access
shaorui	0:571a1835428e	399
shaorui	0:571a1835428e	400	(#) Call the desired function to erase sector(s) or program data
shaorui	0:571a1835428e	401
shaorui	0:571a1835428e	402	(#) Call the FLASH_Lock() function to disable the FLASH control register access
shaorui	0:571a1835428e	403	(recommended to protect the FLASH memory against possible unwanted operation)
shaorui	0:571a1835428e	404
shaorui	0:571a1835428e	405	@endverbatim
shaorui	0:571a1835428e	406	* @{
shaorui	0:571a1835428e	407	*/
shaorui	0:571a1835428e	408
shaorui	0:571a1835428e	409	/**
shaorui	0:571a1835428e	410	* @brief Unlocks the FLASH control register access
shaorui	0:571a1835428e	411	* @param None
shaorui	0:571a1835428e	412	* @retval None
shaorui	0:571a1835428e	413	*/
shaorui	0:571a1835428e	414	void FLASH_Unlock(void)
shaorui	0:571a1835428e	415	{
shaorui	0:571a1835428e	416	if((FLASH->CR & FLASH_CR_LOCK) != RESET)
shaorui	0:571a1835428e	417	{
shaorui	0:571a1835428e	418	/* Authorize the FLASH Registers access */
shaorui	0:571a1835428e	419	FLASH->KEYR = FLASH_KEY1;
shaorui	0:571a1835428e	420	FLASH->KEYR = FLASH_KEY2;
shaorui	0:571a1835428e	421	}
shaorui	0:571a1835428e	422	}
shaorui	0:571a1835428e	423
shaorui	0:571a1835428e	424	/**
shaorui	0:571a1835428e	425	* @brief Locks the FLASH control register access
shaorui	0:571a1835428e	426	* @param None
shaorui	0:571a1835428e	427	* @retval None
shaorui	0:571a1835428e	428	*/
shaorui	0:571a1835428e	429	void FLASH_Lock(void)
shaorui	0:571a1835428e	430	{
shaorui	0:571a1835428e	431	/* Set the LOCK Bit to lock the FLASH Registers access */
shaorui	0:571a1835428e	432	FLASH->CR \|= FLASH_CR_LOCK;
shaorui	0:571a1835428e	433	}
shaorui	0:571a1835428e	434
shaorui	0:571a1835428e	435	/**
shaorui	0:571a1835428e	436	* @brief Erases a specified FLASH Sector.
shaorui	0:571a1835428e	437	*
shaorui	0:571a1835428e	438	* @note If an erase and a program operations are requested simultaneously,
shaorui	0:571a1835428e	439	* the erase operation is performed before the program one.
shaorui	0:571a1835428e	440	*
shaorui	0:571a1835428e	441	* @param FLASH_Sector: The Sector number to be erased.
shaorui	0:571a1835428e	442	*
shaorui	0:571a1835428e	443	* @note For STM32F405xx/407xx and STM32F415xx/417xx devices this parameter can
shaorui	0:571a1835428e	444	* be a value between FLASH_Sector_0 and FLASH_Sector_11.
shaorui	0:571a1835428e	445	*
shaorui	0:571a1835428e	446	* For STM32F42xxx/43xxx devices this parameter can be a value between
shaorui	0:571a1835428e	447	* FLASH_Sector_0 and FLASH_Sector_23.
shaorui	0:571a1835428e	448	*
shaorui	0:571a1835428e	449	* For STM32F401xx devices this parameter can be a value between
shaorui	0:571a1835428e	450	* FLASH_Sector_0 and FLASH_Sector_5.
shaorui	0:571a1835428e	451	*
shaorui	0:571a1835428e	452	* For STM32F411xE and STM32F412xG devices this parameter can be a value between
shaorui	0:571a1835428e	453	* FLASH_Sector_0 and FLASH_Sector_7.
shaorui	0:571a1835428e	454	*
shaorui	0:571a1835428e	455	* For STM32F410xx devices this parameter can be a value between
shaorui	0:571a1835428e	456	* FLASH_Sector_0 and FLASH_Sector_4.
shaorui	0:571a1835428e	457	*
shaorui	0:571a1835428e	458	* @param VoltageRange: The device voltage range which defines the erase parallelism.
shaorui	0:571a1835428e	459	* This parameter can be one of the following values:
shaorui	0:571a1835428e	460	* @arg VoltageRange_1: when the device voltage range is 1.8V to 2.1V,
shaorui	0:571a1835428e	461	* the operation will be done by byte (8-bit)
shaorui	0:571a1835428e	462	* @arg VoltageRange_2: when the device voltage range is 2.1V to 2.7V,
shaorui	0:571a1835428e	463	* the operation will be done by half word (16-bit)
shaorui	0:571a1835428e	464	* @arg VoltageRange_3: when the device voltage range is 2.7V to 3.6V,
shaorui	0:571a1835428e	465	* the operation will be done by word (32-bit)
shaorui	0:571a1835428e	466	* @arg VoltageRange_4: when the device voltage range is 2.7V to 3.6V + External Vpp,
shaorui	0:571a1835428e	467	* the operation will be done by double word (64-bit)
shaorui	0:571a1835428e	468	*
shaorui	0:571a1835428e	469	* @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
shaorui	0:571a1835428e	470	* FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
shaorui	0:571a1835428e	471	*/
shaorui	0:571a1835428e	472	FLASH_Status FLASH_EraseSector(uint32_t FLASH_Sector, uint8_t VoltageRange)
shaorui	0:571a1835428e	473	{
shaorui	0:571a1835428e	474	uint32_t tmp_psize = 0x0;
shaorui	0:571a1835428e	475	FLASH_Status status = FLASH_COMPLETE2;
shaorui	0:571a1835428e	476
shaorui	0:571a1835428e	477	/* Check the parameters */
shaorui	0:571a1835428e	478	assert_param(IS_FLASH_SECTOR(FLASH_Sector));
shaorui	0:571a1835428e	479	assert_param(IS_VOLTAGERANGE(VoltageRange));
shaorui	0:571a1835428e	480
shaorui	0:571a1835428e	481	if(VoltageRange == VoltageRange_1)
shaorui	0:571a1835428e	482	{
shaorui	0:571a1835428e	483	tmp_psize = FLASH_PSIZE_BYTE;
shaorui	0:571a1835428e	484	}
shaorui	0:571a1835428e	485	else if(VoltageRange == VoltageRange_2)
shaorui	0:571a1835428e	486	{
shaorui	0:571a1835428e	487	tmp_psize = FLASH_PSIZE_HALF_WORD;
shaorui	0:571a1835428e	488	}
shaorui	0:571a1835428e	489	else if(VoltageRange == VoltageRange_3)
shaorui	0:571a1835428e	490	{
shaorui	0:571a1835428e	491	tmp_psize = FLASH_PSIZE_WORD;
shaorui	0:571a1835428e	492	}
shaorui	0:571a1835428e	493	else
shaorui	0:571a1835428e	494	{
shaorui	0:571a1835428e	495	tmp_psize = FLASH_PSIZE_DOUBLE_WORD;
shaorui	0:571a1835428e	496	}
shaorui	0:571a1835428e	497	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	498	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	499
shaorui	0:571a1835428e	500	if(status == FLASH_COMPLETE2)
shaorui	0:571a1835428e	501	{
shaorui	0:571a1835428e	502	/* if the previous operation is completed, proceed to erase the sector */
shaorui	0:571a1835428e	503	FLASH->CR &= CR_PSIZE_MASK;
shaorui	0:571a1835428e	504	FLASH->CR \|= tmp_psize;
shaorui	0:571a1835428e	505	FLASH->CR &= SECTOR_MASK;
shaorui	0:571a1835428e	506	FLASH->CR \|= FLASH_CR_SER \| FLASH_Sector;
shaorui	0:571a1835428e	507	FLASH->CR \|= FLASH_CR_STRT;
shaorui	0:571a1835428e	508
shaorui	0:571a1835428e	509	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	510	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	511
shaorui	0:571a1835428e	512	/* if the erase operation is completed, disable the SER Bit */
shaorui	0:571a1835428e	513	FLASH->CR &= (~FLASH_CR_SER);
shaorui	0:571a1835428e	514	FLASH->CR &= SECTOR_MASK;
shaorui	0:571a1835428e	515	}
shaorui	0:571a1835428e	516	/* Return the Erase Status */
shaorui	0:571a1835428e	517	return status;
shaorui	0:571a1835428e	518	}
shaorui	0:571a1835428e	519
shaorui	0:571a1835428e	520	/**
shaorui	0:571a1835428e	521	* @brief Erases all FLASH Sectors.
shaorui	0:571a1835428e	522	*
shaorui	0:571a1835428e	523	* @note If an erase and a program operations are requested simultaneously,
shaorui	0:571a1835428e	524	* the erase operation is performed before the program one.
shaorui	0:571a1835428e	525	*
shaorui	0:571a1835428e	526	* @param VoltageRange: The device voltage range which defines the erase parallelism.
shaorui	0:571a1835428e	527	* This parameter can be one of the following values:
shaorui	0:571a1835428e	528	* @arg VoltageRange_1: when the device voltage range is 1.8V to 2.1V,
shaorui	0:571a1835428e	529	* the operation will be done by byte (8-bit)
shaorui	0:571a1835428e	530	* @arg VoltageRange_2: when the device voltage range is 2.1V to 2.7V,
shaorui	0:571a1835428e	531	* the operation will be done by half word (16-bit)
shaorui	0:571a1835428e	532	* @arg VoltageRange_3: when the device voltage range is 2.7V to 3.6V,
shaorui	0:571a1835428e	533	* the operation will be done by word (32-bit)
shaorui	0:571a1835428e	534	* @arg VoltageRange_4: when the device voltage range is 2.7V to 3.6V + External Vpp,
shaorui	0:571a1835428e	535	* the operation will be done by double word (64-bit)
shaorui	0:571a1835428e	536	*
shaorui	0:571a1835428e	537	* @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
shaorui	0:571a1835428e	538	* FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
shaorui	0:571a1835428e	539	*/
shaorui	0:571a1835428e	540	FLASH_Status FLASH_EraseAllSectors(uint8_t VoltageRange)
shaorui	0:571a1835428e	541	{
shaorui	0:571a1835428e	542	uint32_t tmp_psize = 0x0;
shaorui	0:571a1835428e	543	FLASH_Status status = FLASH_COMPLETE2;
shaorui	0:571a1835428e	544
shaorui	0:571a1835428e	545	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	546	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	547	assert_param(IS_VOLTAGERANGE(VoltageRange));
shaorui	0:571a1835428e	548
shaorui	0:571a1835428e	549	if(VoltageRange == VoltageRange_1)
shaorui	0:571a1835428e	550	{
shaorui	0:571a1835428e	551	tmp_psize = FLASH_PSIZE_BYTE;
shaorui	0:571a1835428e	552	}
shaorui	0:571a1835428e	553	else if(VoltageRange == VoltageRange_2)
shaorui	0:571a1835428e	554	{
shaorui	0:571a1835428e	555	tmp_psize = FLASH_PSIZE_HALF_WORD;
shaorui	0:571a1835428e	556	}
shaorui	0:571a1835428e	557	else if(VoltageRange == VoltageRange_3)
shaorui	0:571a1835428e	558	{
shaorui	0:571a1835428e	559	tmp_psize = FLASH_PSIZE_WORD;
shaorui	0:571a1835428e	560	}
shaorui	0:571a1835428e	561	else
shaorui	0:571a1835428e	562	{
shaorui	0:571a1835428e	563	tmp_psize = FLASH_PSIZE_DOUBLE_WORD;
shaorui	0:571a1835428e	564	}
shaorui	0:571a1835428e	565	if(status == FLASH_COMPLETE2)
shaorui	0:571a1835428e	566	{
shaorui	0:571a1835428e	567	/* if the previous operation is completed, proceed to erase all sectors */
shaorui	0:571a1835428e	568	#if defined(STM32F427_437xx) \|\| defined(STM32F429_439xx) \|\| defined(STM32F469_479xx)
shaorui	0:571a1835428e	569	FLASH->CR &= CR_PSIZE_MASK;
shaorui	0:571a1835428e	570	FLASH->CR \|= tmp_psize;
shaorui	0:571a1835428e	571	FLASH->CR \|= (FLASH_CR_MER1 \| FLASH_CR_MER2);
shaorui	0:571a1835428e	572	FLASH->CR \|= FLASH_CR_STRT;
shaorui	0:571a1835428e	573
shaorui	0:571a1835428e	574	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	575	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	576
shaorui	0:571a1835428e	577	/* if the erase operation is completed, disable the MER Bit */
shaorui	0:571a1835428e	578	FLASH->CR &= ~(FLASH_CR_MER1 \| FLASH_CR_MER2);
shaorui	0:571a1835428e	579	#endif /* STM32F427_437xx \|\| STM32F429_439xx \|\| STM32F469_479xx */
shaorui	0:571a1835428e	580
shaorui	0:571a1835428e	581	#if defined(STM32F40_41xxx) \|\| defined(STM32F401xx) \|\| defined(STM32F410xx) \|\| defined(STM32F411xE) \|\| defined(STM32F412xG) \|\| defined(STM32F446xx)
shaorui	0:571a1835428e	582	FLASH->CR &= CR_PSIZE_MASK;
shaorui	0:571a1835428e	583	FLASH->CR \|= tmp_psize;
shaorui	0:571a1835428e	584	FLASH->CR \|= FLASH_CR_MER;
shaorui	0:571a1835428e	585	FLASH->CR \|= FLASH_CR_STRT;
shaorui	0:571a1835428e	586
shaorui	0:571a1835428e	587	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	588	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	589
shaorui	0:571a1835428e	590	/* if the erase operation is completed, disable the MER Bit */
shaorui	0:571a1835428e	591	FLASH->CR &= (~FLASH_CR_MER);
shaorui	0:571a1835428e	592	#endif /* STM32F40_41xxx \|\| STM32F401xx \|\| STM32F410xx \|\| STM32F411xE \|\| STM32F412xG \|\| STM32F446xx */
shaorui	0:571a1835428e	593
shaorui	0:571a1835428e	594	}
shaorui	0:571a1835428e	595	/* Return the Erase Status */
shaorui	0:571a1835428e	596	return status;
shaorui	0:571a1835428e	597	}
shaorui	0:571a1835428e	598
shaorui	0:571a1835428e	599	/**
shaorui	0:571a1835428e	600	* @brief Erases all FLASH Sectors in Bank 1.
shaorui	0:571a1835428e	601	*
shaorui	0:571a1835428e	602	* @note This function can be used only for STM32F42xxx/43xxx devices.
shaorui	0:571a1835428e	603	*
shaorui	0:571a1835428e	604	* @note If an erase and a program operations are requested simultaneously,
shaorui	0:571a1835428e	605	* the erase operation is performed before the program one.
shaorui	0:571a1835428e	606	*
shaorui	0:571a1835428e	607	* @param VoltageRange: The device voltage range which defines the erase parallelism.
shaorui	0:571a1835428e	608	* This parameter can be one of the following values:
shaorui	0:571a1835428e	609	* @arg VoltageRange_1: when the device voltage range is 1.8V to 2.1V,
shaorui	0:571a1835428e	610	* the operation will be done by byte (8-bit)
shaorui	0:571a1835428e	611	* @arg VoltageRange_2: when the device voltage range is 2.1V to 2.7V,
shaorui	0:571a1835428e	612	* the operation will be done by half word (16-bit)
shaorui	0:571a1835428e	613	* @arg VoltageRange_3: when the device voltage range is 2.7V to 3.6V,
shaorui	0:571a1835428e	614	* the operation will be done by word (32-bit)
shaorui	0:571a1835428e	615	* @arg VoltageRange_4: when the device voltage range is 2.7V to 3.6V + External Vpp,
shaorui	0:571a1835428e	616	* the operation will be done by double word (64-bit)
shaorui	0:571a1835428e	617	*
shaorui	0:571a1835428e	618	* @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
shaorui	0:571a1835428e	619	* FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
shaorui	0:571a1835428e	620	*/
shaorui	0:571a1835428e	621	FLASH_Status FLASH_EraseAllBank1Sectors(uint8_t VoltageRange)
shaorui	0:571a1835428e	622	{
shaorui	0:571a1835428e	623	uint32_t tmp_psize = 0x0;
shaorui	0:571a1835428e	624	FLASH_Status status = FLASH_COMPLETE2;
shaorui	0:571a1835428e	625
shaorui	0:571a1835428e	626	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	627	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	628	assert_param(IS_VOLTAGERANGE(VoltageRange));
shaorui	0:571a1835428e	629
shaorui	0:571a1835428e	630	if(VoltageRange == VoltageRange_1)
shaorui	0:571a1835428e	631	{
shaorui	0:571a1835428e	632	tmp_psize = FLASH_PSIZE_BYTE;
shaorui	0:571a1835428e	633	}
shaorui	0:571a1835428e	634	else if(VoltageRange == VoltageRange_2)
shaorui	0:571a1835428e	635	{
shaorui	0:571a1835428e	636	tmp_psize = FLASH_PSIZE_HALF_WORD;
shaorui	0:571a1835428e	637	}
shaorui	0:571a1835428e	638	else if(VoltageRange == VoltageRange_3)
shaorui	0:571a1835428e	639	{
shaorui	0:571a1835428e	640	tmp_psize = FLASH_PSIZE_WORD;
shaorui	0:571a1835428e	641	}
shaorui	0:571a1835428e	642	else
shaorui	0:571a1835428e	643	{
shaorui	0:571a1835428e	644	tmp_psize = FLASH_PSIZE_DOUBLE_WORD;
shaorui	0:571a1835428e	645	}
shaorui	0:571a1835428e	646	if(status == FLASH_COMPLETE2)
shaorui	0:571a1835428e	647	{
shaorui	0:571a1835428e	648	/* if the previous operation is completed, proceed to erase all sectors */
shaorui	0:571a1835428e	649	FLASH->CR &= CR_PSIZE_MASK;
shaorui	0:571a1835428e	650	FLASH->CR \|= tmp_psize;
shaorui	0:571a1835428e	651	FLASH->CR \|= FLASH_CR_MER1;
shaorui	0:571a1835428e	652	FLASH->CR \|= FLASH_CR_STRT;
shaorui	0:571a1835428e	653
shaorui	0:571a1835428e	654	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	655	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	656
shaorui	0:571a1835428e	657	/* if the erase operation is completed, disable the MER Bit */
shaorui	0:571a1835428e	658	FLASH->CR &= (~FLASH_CR_MER1);
shaorui	0:571a1835428e	659
shaorui	0:571a1835428e	660	}
shaorui	0:571a1835428e	661	/* Return the Erase Status */
shaorui	0:571a1835428e	662	return status;
shaorui	0:571a1835428e	663	}
shaorui	0:571a1835428e	664
shaorui	0:571a1835428e	665
shaorui	0:571a1835428e	666	/**
shaorui	0:571a1835428e	667	* @brief Erases all FLASH Sectors in Bank 2.
shaorui	0:571a1835428e	668	*
shaorui	0:571a1835428e	669	* @note This function can be used only for STM32F42xxx/43xxx devices.
shaorui	0:571a1835428e	670	*
shaorui	0:571a1835428e	671	* @note If an erase and a program operations are requested simultaneously,
shaorui	0:571a1835428e	672	* the erase operation is performed before the program one.
shaorui	0:571a1835428e	673	*
shaorui	0:571a1835428e	674	* @param VoltageRange: The device voltage range which defines the erase parallelism.
shaorui	0:571a1835428e	675	* This parameter can be one of the following values:
shaorui	0:571a1835428e	676	* @arg VoltageRange_1: when the device voltage range is 1.8V to 2.1V,
shaorui	0:571a1835428e	677	* the operation will be done by byte (8-bit)
shaorui	0:571a1835428e	678	* @arg VoltageRange_2: when the device voltage range is 2.1V to 2.7V,
shaorui	0:571a1835428e	679	* the operation will be done by half word (16-bit)
shaorui	0:571a1835428e	680	* @arg VoltageRange_3: when the device voltage range is 2.7V to 3.6V,
shaorui	0:571a1835428e	681	* the operation will be done by word (32-bit)
shaorui	0:571a1835428e	682	* @arg VoltageRange_4: when the device voltage range is 2.7V to 3.6V + External Vpp,
shaorui	0:571a1835428e	683	* the operation will be done by double word (64-bit)
shaorui	0:571a1835428e	684	*
shaorui	0:571a1835428e	685	* @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
shaorui	0:571a1835428e	686	* FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
shaorui	0:571a1835428e	687	*/
shaorui	0:571a1835428e	688	FLASH_Status FLASH_EraseAllBank2Sectors(uint8_t VoltageRange)
shaorui	0:571a1835428e	689	{
shaorui	0:571a1835428e	690	uint32_t tmp_psize = 0x0;
shaorui	0:571a1835428e	691	FLASH_Status status = FLASH_COMPLETE2;
shaorui	0:571a1835428e	692
shaorui	0:571a1835428e	693	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	694	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	695	assert_param(IS_VOLTAGERANGE(VoltageRange));
shaorui	0:571a1835428e	696
shaorui	0:571a1835428e	697	if(VoltageRange == VoltageRange_1)
shaorui	0:571a1835428e	698	{
shaorui	0:571a1835428e	699	tmp_psize = FLASH_PSIZE_BYTE;
shaorui	0:571a1835428e	700	}
shaorui	0:571a1835428e	701	else if(VoltageRange == VoltageRange_2)
shaorui	0:571a1835428e	702	{
shaorui	0:571a1835428e	703	tmp_psize = FLASH_PSIZE_HALF_WORD;
shaorui	0:571a1835428e	704	}
shaorui	0:571a1835428e	705	else if(VoltageRange == VoltageRange_3)
shaorui	0:571a1835428e	706	{
shaorui	0:571a1835428e	707	tmp_psize = FLASH_PSIZE_WORD;
shaorui	0:571a1835428e	708	}
shaorui	0:571a1835428e	709	else
shaorui	0:571a1835428e	710	{
shaorui	0:571a1835428e	711	tmp_psize = FLASH_PSIZE_DOUBLE_WORD;
shaorui	0:571a1835428e	712	}
shaorui	0:571a1835428e	713	if(status == FLASH_COMPLETE2)
shaorui	0:571a1835428e	714	{
shaorui	0:571a1835428e	715	/* if the previous operation is completed, proceed to erase all sectors */
shaorui	0:571a1835428e	716	FLASH->CR &= CR_PSIZE_MASK;
shaorui	0:571a1835428e	717	FLASH->CR \|= tmp_psize;
shaorui	0:571a1835428e	718	FLASH->CR \|= FLASH_CR_MER2;
shaorui	0:571a1835428e	719	FLASH->CR \|= FLASH_CR_STRT;
shaorui	0:571a1835428e	720
shaorui	0:571a1835428e	721	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	722	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	723
shaorui	0:571a1835428e	724	/* if the erase operation is completed, disable the MER Bit */
shaorui	0:571a1835428e	725	FLASH->CR &= (~FLASH_CR_MER2);
shaorui	0:571a1835428e	726
shaorui	0:571a1835428e	727	}
shaorui	0:571a1835428e	728	/* Return the Erase Status */
shaorui	0:571a1835428e	729	return status;
shaorui	0:571a1835428e	730	}
shaorui	0:571a1835428e	731
shaorui	0:571a1835428e	732	/**
shaorui	0:571a1835428e	733	* @brief Programs a double word (64-bit) at a specified address.
shaorui	0:571a1835428e	734	* @note This function must be used when the device voltage range is from
shaorui	0:571a1835428e	735	* 2.7V to 3.6V and an External Vpp is present.
shaorui	0:571a1835428e	736	*
shaorui	0:571a1835428e	737	* @note If an erase and a program operations are requested simultaneously,
shaorui	0:571a1835428e	738	* the erase operation is performed before the program one.
shaorui	0:571a1835428e	739	*
shaorui	0:571a1835428e	740	* @param Address: specifies the address to be programmed.
shaorui	0:571a1835428e	741	* @param Data: specifies the data to be programmed.
shaorui	0:571a1835428e	742	* @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
shaorui	0:571a1835428e	743	* FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
shaorui	0:571a1835428e	744	*/
shaorui	0:571a1835428e	745	FLASH_Status FLASH_ProgramDoubleWord(uint32_t Address, uint64_t Data)
shaorui	0:571a1835428e	746	{
shaorui	0:571a1835428e	747	FLASH_Status status = FLASH_COMPLETE2;
shaorui	0:571a1835428e	748
shaorui	0:571a1835428e	749	/* Check the parameters */
shaorui	0:571a1835428e	750	assert_param(IS_FLASH_ADDRESS(Address));
shaorui	0:571a1835428e	751
shaorui	0:571a1835428e	752	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	753	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	754
shaorui	0:571a1835428e	755	if(status == FLASH_COMPLETE2)
shaorui	0:571a1835428e	756	{
shaorui	0:571a1835428e	757	/* if the previous operation is completed, proceed to program the new data */
shaorui	0:571a1835428e	758	FLASH->CR &= CR_PSIZE_MASK;
shaorui	0:571a1835428e	759	FLASH->CR \|= FLASH_PSIZE_DOUBLE_WORD;
shaorui	0:571a1835428e	760	FLASH->CR \|= FLASH_CR_PG;
shaorui	0:571a1835428e	761
shaorui	0:571a1835428e	762	(__IO uint64_t)Address = Data;
shaorui	0:571a1835428e	763
shaorui	0:571a1835428e	764	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	765	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	766
shaorui	0:571a1835428e	767	/* if the program operation is completed, disable the PG Bit */
shaorui	0:571a1835428e	768	FLASH->CR &= (~FLASH_CR_PG);
shaorui	0:571a1835428e	769	}
shaorui	0:571a1835428e	770	/* Return the Program Status */
shaorui	0:571a1835428e	771	return status;
shaorui	0:571a1835428e	772	}
shaorui	0:571a1835428e	773
shaorui	0:571a1835428e	774	/**
shaorui	0:571a1835428e	775	* @brief Programs a word (32-bit) at a specified address.
shaorui	0:571a1835428e	776	*
shaorui	0:571a1835428e	777	* @note This function must be used when the device voltage range is from 2.7V to 3.6V.
shaorui	0:571a1835428e	778	*
shaorui	0:571a1835428e	779	* @note If an erase and a program operations are requested simultaneously,
shaorui	0:571a1835428e	780	* the erase operation is performed before the program one.
shaorui	0:571a1835428e	781	*
shaorui	0:571a1835428e	782	* @param Address: specifies the address to be programmed.
shaorui	0:571a1835428e	783	* This parameter can be any address in Program memory zone or in OTP zone.
shaorui	0:571a1835428e	784	* @param Data: specifies the data to be programmed.
shaorui	0:571a1835428e	785	* @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
shaorui	0:571a1835428e	786	* FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
shaorui	0:571a1835428e	787	*/
shaorui	0:571a1835428e	788	FLASH_Status FLASH_ProgramWord(uint32_t Address, uint32_t Data)
shaorui	0:571a1835428e	789	{
shaorui	0:571a1835428e	790	FLASH_Status status = FLASH_COMPLETE2;
shaorui	0:571a1835428e	791
shaorui	0:571a1835428e	792	/* Check the parameters */
shaorui	0:571a1835428e	793	assert_param(IS_FLASH_ADDRESS(Address));
shaorui	0:571a1835428e	794
shaorui	0:571a1835428e	795	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	796	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	797
shaorui	0:571a1835428e	798	if(status == FLASH_COMPLETE2)
shaorui	0:571a1835428e	799	{
shaorui	0:571a1835428e	800	/* if the previous operation is completed, proceed to program the new data */
shaorui	0:571a1835428e	801	FLASH->CR &= CR_PSIZE_MASK;
shaorui	0:571a1835428e	802	FLASH->CR \|= FLASH_PSIZE_WORD;
shaorui	0:571a1835428e	803	FLASH->CR \|= FLASH_CR_PG;
shaorui	0:571a1835428e	804
shaorui	0:571a1835428e	805	(__IO uint32_t)Address = Data;
shaorui	0:571a1835428e	806
shaorui	0:571a1835428e	807	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	808	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	809
shaorui	0:571a1835428e	810	/* if the program operation is completed, disable the PG Bit */
shaorui	0:571a1835428e	811	FLASH->CR &= (~FLASH_CR_PG);
shaorui	0:571a1835428e	812	}
shaorui	0:571a1835428e	813	/* Return the Program Status */
shaorui	0:571a1835428e	814	return status;
shaorui	0:571a1835428e	815	}
shaorui	0:571a1835428e	816
shaorui	0:571a1835428e	817	/**
shaorui	0:571a1835428e	818	* @brief Programs a half word (16-bit) at a specified address.
shaorui	0:571a1835428e	819	* @note This function must be used when the device voltage range is from 2.1V to 3.6V.
shaorui	0:571a1835428e	820	*
shaorui	0:571a1835428e	821	* @note If an erase and a program operations are requested simultaneously,
shaorui	0:571a1835428e	822	* the erase operation is performed before the program one.
shaorui	0:571a1835428e	823	*
shaorui	0:571a1835428e	824	* @param Address: specifies the address to be programmed.
shaorui	0:571a1835428e	825	* This parameter can be any address in Program memory zone or in OTP zone.
shaorui	0:571a1835428e	826	* @param Data: specifies the data to be programmed.
shaorui	0:571a1835428e	827	* @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
shaorui	0:571a1835428e	828	* FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
shaorui	0:571a1835428e	829	*/
shaorui	0:571a1835428e	830	FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data)
shaorui	0:571a1835428e	831	{
shaorui	0:571a1835428e	832	FLASH_Status status = FLASH_COMPLETE2;
shaorui	0:571a1835428e	833
shaorui	0:571a1835428e	834	/* Check the parameters */
shaorui	0:571a1835428e	835	assert_param(IS_FLASH_ADDRESS(Address));
shaorui	0:571a1835428e	836
shaorui	0:571a1835428e	837	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	838	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	839
shaorui	0:571a1835428e	840	if(status == FLASH_COMPLETE2)
shaorui	0:571a1835428e	841	{
shaorui	0:571a1835428e	842	/* if the previous operation is completed, proceed to program the new data */
shaorui	0:571a1835428e	843	FLASH->CR &= CR_PSIZE_MASK;
shaorui	0:571a1835428e	844	FLASH->CR \|= FLASH_PSIZE_HALF_WORD;
shaorui	0:571a1835428e	845	FLASH->CR \|= FLASH_CR_PG;
shaorui	0:571a1835428e	846
shaorui	0:571a1835428e	847	(__IO uint16_t)Address = Data;
shaorui	0:571a1835428e	848
shaorui	0:571a1835428e	849	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	850	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	851
shaorui	0:571a1835428e	852	/* if the program operation is completed, disable the PG Bit */
shaorui	0:571a1835428e	853	FLASH->CR &= (~FLASH_CR_PG);
shaorui	0:571a1835428e	854	}
shaorui	0:571a1835428e	855	/* Return the Program Status */
shaorui	0:571a1835428e	856	return status;
shaorui	0:571a1835428e	857	}
shaorui	0:571a1835428e	858
shaorui	0:571a1835428e	859	/**
shaorui	0:571a1835428e	860	* @brief Programs a byte (8-bit) at a specified address.
shaorui	0:571a1835428e	861	* @note This function can be used within all the device supply voltage ranges.
shaorui	0:571a1835428e	862	*
shaorui	0:571a1835428e	863	* @note If an erase and a program operations are requested simultaneously,
shaorui	0:571a1835428e	864	* the erase operation is performed before the program one.
shaorui	0:571a1835428e	865	*
shaorui	0:571a1835428e	866	* @param Address: specifies the address to be programmed.
shaorui	0:571a1835428e	867	* This parameter can be any address in Program memory zone or in OTP zone.
shaorui	0:571a1835428e	868	* @param Data: specifies the data to be programmed.
shaorui	0:571a1835428e	869	* @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
shaorui	0:571a1835428e	870	* FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
shaorui	0:571a1835428e	871	*/
shaorui	0:571a1835428e	872	FLASH_Status FLASH_ProgramByte(uint32_t Address, uint8_t Data)
shaorui	0:571a1835428e	873	{
shaorui	0:571a1835428e	874	FLASH_Status status = FLASH_COMPLETE2;
shaorui	0:571a1835428e	875
shaorui	0:571a1835428e	876	/* Check the parameters */
shaorui	0:571a1835428e	877	assert_param(IS_FLASH_ADDRESS(Address));
shaorui	0:571a1835428e	878
shaorui	0:571a1835428e	879	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	880	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	881
shaorui	0:571a1835428e	882	if(status == FLASH_COMPLETE2)
shaorui	0:571a1835428e	883	{
shaorui	0:571a1835428e	884	/* if the previous operation is completed, proceed to program the new data */
shaorui	0:571a1835428e	885	FLASH->CR &= CR_PSIZE_MASK;
shaorui	0:571a1835428e	886	FLASH->CR \|= FLASH_PSIZE_BYTE;
shaorui	0:571a1835428e	887	FLASH->CR \|= FLASH_CR_PG;
shaorui	0:571a1835428e	888
shaorui	0:571a1835428e	889	(__IO uint8_t)Address = Data;
shaorui	0:571a1835428e	890
shaorui	0:571a1835428e	891	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	892	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	893
shaorui	0:571a1835428e	894	/* if the program operation is completed, disable the PG Bit */
shaorui	0:571a1835428e	895	FLASH->CR &= (~FLASH_CR_PG);
shaorui	0:571a1835428e	896	}
shaorui	0:571a1835428e	897
shaorui	0:571a1835428e	898	/* Return the Program Status */
shaorui	0:571a1835428e	899	return status;
shaorui	0:571a1835428e	900	}
shaorui	0:571a1835428e	901
shaorui	0:571a1835428e	902	/**
shaorui	0:571a1835428e	903	* @}
shaorui	0:571a1835428e	904	*/
shaorui	0:571a1835428e	905
shaorui	0:571a1835428e	906	/** @defgroup FLASH_Group3 Option Bytes Programming functions
shaorui	0:571a1835428e	907	* @brief Option Bytes Programming functions
shaorui	0:571a1835428e	908	*
shaorui	0:571a1835428e	909	@verbatim
shaorui	0:571a1835428e	910	===============================================================================
shaorui	0:571a1835428e	911	##### Option Bytes Programming functions #####
shaorui	0:571a1835428e	912	===============================================================================
shaorui	0:571a1835428e	913	[..]
shaorui	0:571a1835428e	914	This group includes the following functions:
shaorui	0:571a1835428e	915	(+) void FLASH_OB_Unlock(void)
shaorui	0:571a1835428e	916	(+) void FLASH_OB_Lock(void)
shaorui	0:571a1835428e	917	(+) void FLASH_OB_WRPConfig(uint32_t OB_WRP, FunctionalState NewState)
shaorui	0:571a1835428e	918	(+) void FLASH_OB_WRP1Config(uint32_t OB_WRP, FunctionalState NewState)
shaorui	0:571a1835428e	919	(+) void FLASH_OB_PCROPSelectionConfig(uint8_t OB_PCROPSelect)
shaorui	0:571a1835428e	920	(+) void FLASH_OB_PCROPConfig(uint32_t OB_PCROP, FunctionalState NewState)
shaorui	0:571a1835428e	921	(+) void FLASH_OB_PCROP1Config(uint32_t OB_PCROP, FunctionalState NewState)
shaorui	0:571a1835428e	922	(+) void FLASH_OB_RDPConfig(uint8_t OB_RDP)
shaorui	0:571a1835428e	923	(+) void FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY)
shaorui	0:571a1835428e	924	(+) void FLASH_OB_BORConfig(uint8_t OB_BOR)
shaorui	0:571a1835428e	925	(+) FLASH_Status FLASH_ProgramOTP(uint32_t Address, uint32_t Data)
shaorui	0:571a1835428e	926	(+) FLASH_Status FLASH_OB_Launch(void)
shaorui	0:571a1835428e	927	(+) uint32_t FLASH_OB_GetUser(void)
shaorui	0:571a1835428e	928	(+) uint8_t FLASH_OB_GetWRP(void)
shaorui	0:571a1835428e	929	(+) uint8_t FLASH_OB_GetWRP1(void)
shaorui	0:571a1835428e	930	(+) uint8_t FLASH_OB_GetPCROP(void)
shaorui	0:571a1835428e	931	(+) uint8_t FLASH_OB_GetPCROP1(void)
shaorui	0:571a1835428e	932	(+) uint8_t FLASH_OB_GetRDP(void)
shaorui	0:571a1835428e	933	(+) uint8_t FLASH_OB_GetBOR(void)
shaorui	0:571a1835428e	934	[..]
shaorui	0:571a1835428e	935	The following function can be used only for STM32F42xxx/43xxx devices.
shaorui	0:571a1835428e	936	(+) void FLASH_OB_BootConfig(uint8_t OB_BOOT)
shaorui	0:571a1835428e	937	[..]
shaorui	0:571a1835428e	938	Any operation of erase or program should follow these steps:
shaorui	0:571a1835428e	939	(#) Call the FLASH_OB_Unlock() function to enable the FLASH option control
shaorui	0:571a1835428e	940	register access
shaorui	0:571a1835428e	941
shaorui	0:571a1835428e	942	(#) Call one or several functions to program the desired Option Bytes:
shaorui	0:571a1835428e	943	(++) void FLASH_OB_WRPConfig(uint32_t OB_WRP, FunctionalState NewState)
shaorui	0:571a1835428e	944	=> to Enable/Disable the desired sector write protection
shaorui	0:571a1835428e	945	(++) void FLASH_OB_RDPConfig(uint8_t OB_RDP) => to set the desired read
shaorui	0:571a1835428e	946	Protection Level
shaorui	0:571a1835428e	947	(++) void FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY)
shaorui	0:571a1835428e	948	=> to configure the user Option Bytes.
shaorui	0:571a1835428e	949	(++) void FLASH_OB_BORConfig(uint8_t OB_BOR) => to set the BOR Level
shaorui	0:571a1835428e	950
shaorui	0:571a1835428e	951	(#) Once all needed Option Bytes to be programmed are correctly written,
shaorui	0:571a1835428e	952	call the FLASH_OB_Launch() function to launch the Option Bytes
shaorui	0:571a1835428e	953	programming process.
shaorui	0:571a1835428e	954
shaorui	0:571a1835428e	955	-@- When changing the IWDG mode from HW to SW or from SW to HW, a system
shaorui	0:571a1835428e	956	reset is needed to make the change effective.
shaorui	0:571a1835428e	957
shaorui	0:571a1835428e	958	(#) Call the FLASH_OB_Lock() function to disable the FLASH option control
shaorui	0:571a1835428e	959	register access (recommended to protect the Option Bytes against
shaorui	0:571a1835428e	960	possible unwanted operations)
shaorui	0:571a1835428e	961
shaorui	0:571a1835428e	962	@endverbatim
shaorui	0:571a1835428e	963	* @{
shaorui	0:571a1835428e	964	*/
shaorui	0:571a1835428e	965
shaorui	0:571a1835428e	966	/**
shaorui	0:571a1835428e	967	* @brief Unlocks the FLASH Option Control Registers access.
shaorui	0:571a1835428e	968	* @param None
shaorui	0:571a1835428e	969	* @retval None
shaorui	0:571a1835428e	970	*/
shaorui	0:571a1835428e	971	void FLASH_OB_Unlock(void)
shaorui	0:571a1835428e	972	{
shaorui	0:571a1835428e	973	if((FLASH->OPTCR & FLASH_OPTCR_OPTLOCK) != RESET)
shaorui	0:571a1835428e	974	{
shaorui	0:571a1835428e	975	/* Authorizes the Option Byte register programming */
shaorui	0:571a1835428e	976	FLASH->OPTKEYR = FLASH_OPT_KEY1;
shaorui	0:571a1835428e	977	FLASH->OPTKEYR = FLASH_OPT_KEY2;
shaorui	0:571a1835428e	978	}
shaorui	0:571a1835428e	979	}
shaorui	0:571a1835428e	980
shaorui	0:571a1835428e	981	/**
shaorui	0:571a1835428e	982	* @brief Locks the FLASH Option Control Registers access.
shaorui	0:571a1835428e	983	* @param None
shaorui	0:571a1835428e	984	* @retval None
shaorui	0:571a1835428e	985	*/
shaorui	0:571a1835428e	986	void FLASH_OB_Lock(void)
shaorui	0:571a1835428e	987	{
shaorui	0:571a1835428e	988	/* Set the OPTLOCK Bit to lock the FLASH Option Byte Registers access */
shaorui	0:571a1835428e	989	FLASH->OPTCR \|= FLASH_OPTCR_OPTLOCK;
shaorui	0:571a1835428e	990	}
shaorui	0:571a1835428e	991
shaorui	0:571a1835428e	992	/**
shaorui	0:571a1835428e	993	* @brief Enables or disables the write protection of the desired sectors, for the first
shaorui	0:571a1835428e	994	* 1 Mb of the Flash
shaorui	0:571a1835428e	995	*
shaorui	0:571a1835428e	996	* @note When the memory read protection level is selected (RDP level = 1),
shaorui	0:571a1835428e	997	* it is not possible to program or erase the flash sector i if CortexM4
shaorui	0:571a1835428e	998	* debug features are connected or boot code is executed in RAM, even if nWRPi = 1
shaorui	0:571a1835428e	999	* @note Active value of nWRPi bits is inverted when PCROP mode is active (SPRMOD =1).
shaorui	0:571a1835428e	1000	*
shaorui	0:571a1835428e	1001	* @param OB_WRP: specifies the sector(s) to be write protected or unprotected.
shaorui	0:571a1835428e	1002	* This parameter can be one of the following values:
shaorui	0:571a1835428e	1003	* @arg OB_WRP: A value between OB_WRP_Sector0 and OB_WRP_Sector11
shaorui	0:571a1835428e	1004	* @arg OB_WRP_Sector_All
shaorui	0:571a1835428e	1005	* @param Newstate: new state of the Write Protection.
shaorui	0:571a1835428e	1006	* This parameter can be: ENABLE or DISABLE.
shaorui	0:571a1835428e	1007	* @retval None
shaorui	0:571a1835428e	1008	*/
shaorui	0:571a1835428e	1009	void FLASH_OB_WRPConfig(uint32_t OB_WRP, FunctionalState NewState)
shaorui	0:571a1835428e	1010	{
shaorui	0:571a1835428e	1011	FLASH_Status status = FLASH_COMPLETE2;
shaorui	0:571a1835428e	1012
shaorui	0:571a1835428e	1013	/* Check the parameters */
shaorui	0:571a1835428e	1014	assert_param(IS_OB_WRP(OB_WRP));
shaorui	0:571a1835428e	1015	assert_param(IS_FUNCTIONAL_STATE(NewState));
shaorui	0:571a1835428e	1016
shaorui	0:571a1835428e	1017	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	1018
shaorui	0:571a1835428e	1019	if(status == FLASH_COMPLETE2)
shaorui	0:571a1835428e	1020	{
shaorui	0:571a1835428e	1021	if(NewState != DISABLE)
shaorui	0:571a1835428e	1022	{
shaorui	0:571a1835428e	1023	(__IO uint16_t)OPTCR_BYTE2_ADDRESS &= (~OB_WRP);
shaorui	0:571a1835428e	1024	}
shaorui	0:571a1835428e	1025	else
shaorui	0:571a1835428e	1026	{
shaorui	0:571a1835428e	1027	(__IO uint16_t)OPTCR_BYTE2_ADDRESS \|= (uint16_t)OB_WRP;
shaorui	0:571a1835428e	1028	}
shaorui	0:571a1835428e	1029	}
shaorui	0:571a1835428e	1030	}
shaorui	0:571a1835428e	1031
shaorui	0:571a1835428e	1032	/**
shaorui	0:571a1835428e	1033	* @brief Enables or disables the write protection of the desired sectors, for the second
shaorui	0:571a1835428e	1034	* 1 Mb of the Flash
shaorui	0:571a1835428e	1035	*
shaorui	0:571a1835428e	1036	* @note This function can be used only for STM32F42xxx/43xxx devices.
shaorui	0:571a1835428e	1037	*
shaorui	0:571a1835428e	1038	* @note When the memory read out protection is selected (RDP level = 1),
shaorui	0:571a1835428e	1039	* it is not possible to program or erase the flash sector i if CortexM4
shaorui	0:571a1835428e	1040	* debug features are connected or boot code is executed in RAM, even if nWRPi = 1
shaorui	0:571a1835428e	1041	* @note Active value of nWRPi bits is inverted when PCROP mode is active (SPRMOD =1).
shaorui	0:571a1835428e	1042	*
shaorui	0:571a1835428e	1043	* @param OB_WRP: specifies the sector(s) to be write protected or unprotected.
shaorui	0:571a1835428e	1044	* This parameter can be one of the following values:
shaorui	0:571a1835428e	1045	* @arg OB_WRP: A value between OB_WRP_Sector12 and OB_WRP_Sector23
shaorui	0:571a1835428e	1046	* @arg OB_WRP_Sector_All
shaorui	0:571a1835428e	1047	* @param Newstate: new state of the Write Protection.
shaorui	0:571a1835428e	1048	* This parameter can be: ENABLE or DISABLE.
shaorui	0:571a1835428e	1049	* @retval None
shaorui	0:571a1835428e	1050	*/
shaorui	0:571a1835428e	1051	void FLASH_OB_WRP1Config(uint32_t OB_WRP, FunctionalState NewState)
shaorui	0:571a1835428e	1052	{
shaorui	0:571a1835428e	1053	FLASH_Status status = FLASH_COMPLETE2;
shaorui	0:571a1835428e	1054
shaorui	0:571a1835428e	1055	/* Check the parameters */
shaorui	0:571a1835428e	1056	assert_param(IS_OB_WRP(OB_WRP));
shaorui	0:571a1835428e	1057	assert_param(IS_FUNCTIONAL_STATE(NewState));
shaorui	0:571a1835428e	1058
shaorui	0:571a1835428e	1059	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	1060
shaorui	0:571a1835428e	1061	if(status == FLASH_COMPLETE2)
shaorui	0:571a1835428e	1062	{
shaorui	0:571a1835428e	1063	if(NewState != DISABLE)
shaorui	0:571a1835428e	1064	{
shaorui	0:571a1835428e	1065	(__IO uint16_t)OPTCR1_BYTE2_ADDRESS &= (~OB_WRP);
shaorui	0:571a1835428e	1066	}
shaorui	0:571a1835428e	1067	else
shaorui	0:571a1835428e	1068	{
shaorui	0:571a1835428e	1069	(__IO uint16_t)OPTCR1_BYTE2_ADDRESS \|= (uint16_t)OB_WRP;
shaorui	0:571a1835428e	1070	}
shaorui	0:571a1835428e	1071	}
shaorui	0:571a1835428e	1072	}
shaorui	0:571a1835428e	1073
shaorui	0:571a1835428e	1074	/**
shaorui	0:571a1835428e	1075	* @brief Select the Protection Mode (SPRMOD).
shaorui	0:571a1835428e	1076	*
shaorui	0:571a1835428e	1077	* @note This function can be used only for STM32F42xxx/43xxx and STM32F401xx/411xE devices.
shaorui	0:571a1835428e	1078	*
shaorui	0:571a1835428e	1079	* @note After PCROP activation, Option Byte modification is not possible.
shaorui	0:571a1835428e	1080	* Exception made for the global Read Out Protection modification level (level1 to level0)
shaorui	0:571a1835428e	1081	* @note Once SPRMOD bit is active unprotection of a protected sector is not possible
shaorui	0:571a1835428e	1082	*
shaorui	0:571a1835428e	1083	* @note Read a protected sector will set RDERR Flag and write a protected sector will set WRPERR Flag
shaorui	0:571a1835428e	1084	*
shaorui	0:571a1835428e	1085	* @note Some Precautions should be taken when activating the PCROP feature :
shaorui	0:571a1835428e	1086	* The active value of nWRPi bits is inverted when PCROP mode is active, this means if SPRMOD = 1
shaorui	0:571a1835428e	1087	* and WRPi = 1 (default value), then the user sector i is read/write protected.
shaorui	0:571a1835428e	1088	* In order to avoid activation of PCROP Mode for undesired sectors, please follow the
shaorui	0:571a1835428e	1089	* below safety sequence :
shaorui	0:571a1835428e	1090	* - Disable PCROP for all Sectors using FLASH_OB_PCROPConfig(OB_PCROP_Sector_All, DISABLE) function
shaorui	0:571a1835428e	1091	* for Bank1 or FLASH_OB_PCROP1Config(OB_PCROP_Sector_All, DISABLE) function for Bank2
shaorui	0:571a1835428e	1092	* - Enable PCROP for the desired Sector i using FLASH_OB_PCROPConfig(Sector i, ENABLE) function
shaorui	0:571a1835428e	1093	* - Activate the PCROP Mode FLASH_OB_PCROPSelectionConfig() function.
shaorui	0:571a1835428e	1094	*
shaorui	0:571a1835428e	1095	* @param OB_PCROP: Select the Protection Mode of nWPRi bits
shaorui	0:571a1835428e	1096	* This parameter can be one of the following values:
shaorui	0:571a1835428e	1097	* @arg OB_PcROP_Disable: nWRPi control the write protection of respective user sectors.
shaorui	0:571a1835428e	1098	* @arg OB_PcROP_Enable: nWRPi control the read&write protection (PCROP) of respective user sectors.
shaorui	0:571a1835428e	1099	* @retval None
shaorui	0:571a1835428e	1100	*/
shaorui	0:571a1835428e	1101	void FLASH_OB_PCROPSelectionConfig(uint8_t OB_PcROP)
shaorui	0:571a1835428e	1102	{
shaorui	0:571a1835428e	1103	uint8_t optiontmp = 0xFF;
shaorui	0:571a1835428e	1104
shaorui	0:571a1835428e	1105	/* Check the parameters */
shaorui	0:571a1835428e	1106	assert_param(IS_OB_PCROP_SELECT(OB_PcROP));
shaorui	0:571a1835428e	1107
shaorui	0:571a1835428e	1108	/* Mask SPRMOD bit */
shaorui	0:571a1835428e	1109	optiontmp = (uint8_t)(((__IO uint8_t )OPTCR_BYTE3_ADDRESS) & (uint8_t)0x7F);
shaorui	0:571a1835428e	1110	/* Update Option Byte */
shaorui	0:571a1835428e	1111	(__IO uint8_t )OPTCR_BYTE3_ADDRESS = (uint8_t)(OB_PcROP \| optiontmp);
shaorui	0:571a1835428e	1112
shaorui	0:571a1835428e	1113	}
shaorui	0:571a1835428e	1114
shaorui	0:571a1835428e	1115	/**
shaorui	0:571a1835428e	1116	* @brief Enables or disables the read/write protection (PCROP) of the desired
shaorui	0:571a1835428e	1117	* sectors, for the first 1 MB of the Flash.
shaorui	0:571a1835428e	1118	*
shaorui	0:571a1835428e	1119	* @note This function can be used only for STM32F42xxx/43xxx , STM32F401xx/411xE
shaorui	0:571a1835428e	1120	* and STM32F412xG devices.
shaorui	0:571a1835428e	1121	*
shaorui	0:571a1835428e	1122	* @param OB_PCROP: specifies the sector(s) to be read/write protected or unprotected.
shaorui	0:571a1835428e	1123	* This parameter can be one of the following values:
shaorui	0:571a1835428e	1124	* @arg OB_PCROP: A value between OB_PCROP_Sector0 and OB_PCROP_Sector11 for
shaorui	0:571a1835428e	1125	* STM32F42xxx/43xxx devices and between OB_PCROP_Sector0 and
shaorui	0:571a1835428e	1126	* OB_PCROP_Sector5 for STM32F401xx/411xE devices.
shaorui	0:571a1835428e	1127	* @arg OB_PCROP_Sector_All
shaorui	0:571a1835428e	1128	* @param Newstate: new state of the Write Protection.
shaorui	0:571a1835428e	1129	* This parameter can be: ENABLE or DISABLE.
shaorui	0:571a1835428e	1130	* @retval None
shaorui	0:571a1835428e	1131	*/
shaorui	0:571a1835428e	1132	void FLASH_OB_PCROPConfig(uint32_t OB_PCROP, FunctionalState NewState)
shaorui	0:571a1835428e	1133	{
shaorui	0:571a1835428e	1134	FLASH_Status status = FLASH_COMPLETE2;
shaorui	0:571a1835428e	1135
shaorui	0:571a1835428e	1136	/* Check the parameters */
shaorui	0:571a1835428e	1137	assert_param(IS_OB_PCROP(OB_PCROP));
shaorui	0:571a1835428e	1138	assert_param(IS_FUNCTIONAL_STATE(NewState));
shaorui	0:571a1835428e	1139
shaorui	0:571a1835428e	1140	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	1141
shaorui	0:571a1835428e	1142	if(status == FLASH_COMPLETE2)
shaorui	0:571a1835428e	1143	{
shaorui	0:571a1835428e	1144	if(NewState != DISABLE)
shaorui	0:571a1835428e	1145	{
shaorui	0:571a1835428e	1146	(__IO uint16_t)OPTCR_BYTE2_ADDRESS \|= (uint16_t)OB_PCROP;
shaorui	0:571a1835428e	1147	}
shaorui	0:571a1835428e	1148	else
shaorui	0:571a1835428e	1149	{
shaorui	0:571a1835428e	1150	(__IO uint16_t)OPTCR_BYTE2_ADDRESS &= (~OB_PCROP);
shaorui	0:571a1835428e	1151	}
shaorui	0:571a1835428e	1152	}
shaorui	0:571a1835428e	1153	}
shaorui	0:571a1835428e	1154
shaorui	0:571a1835428e	1155	/**
shaorui	0:571a1835428e	1156	* @brief Enables or disables the read/write protection (PCROP) of the desired
shaorui	0:571a1835428e	1157	* sectors
shaorui	0:571a1835428e	1158	*
shaorui	0:571a1835428e	1159	* @note This function can be used only for STM32F42xxx/43xxx devices.
shaorui	0:571a1835428e	1160	*
shaorui	0:571a1835428e	1161	* @param OB_PCROP: specifies the sector(s) to be read/write protected or unprotected.
shaorui	0:571a1835428e	1162	* This parameter can be one of the following values:
shaorui	0:571a1835428e	1163	* @arg OB_PCROP: A value between OB_PCROP_Sector12 and OB_PCROP_Sector23
shaorui	0:571a1835428e	1164	* @arg OB_PCROP_Sector_All
shaorui	0:571a1835428e	1165	* @param Newstate: new state of the Write Protection.
shaorui	0:571a1835428e	1166	* This parameter can be: ENABLE or DISABLE.
shaorui	0:571a1835428e	1167	* @retval None
shaorui	0:571a1835428e	1168	*/
shaorui	0:571a1835428e	1169	void FLASH_OB_PCROP1Config(uint32_t OB_PCROP, FunctionalState NewState)
shaorui	0:571a1835428e	1170	{
shaorui	0:571a1835428e	1171	FLASH_Status status = FLASH_COMPLETE2;
shaorui	0:571a1835428e	1172
shaorui	0:571a1835428e	1173	/* Check the parameters */
shaorui	0:571a1835428e	1174	assert_param(IS_OB_PCROP(OB_PCROP));
shaorui	0:571a1835428e	1175	assert_param(IS_FUNCTIONAL_STATE(NewState));
shaorui	0:571a1835428e	1176
shaorui	0:571a1835428e	1177	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	1178
shaorui	0:571a1835428e	1179	if(status == FLASH_COMPLETE2)
shaorui	0:571a1835428e	1180	{
shaorui	0:571a1835428e	1181	if(NewState != DISABLE)
shaorui	0:571a1835428e	1182	{
shaorui	0:571a1835428e	1183	(__IO uint16_t)OPTCR1_BYTE2_ADDRESS \|= (uint16_t)OB_PCROP;
shaorui	0:571a1835428e	1184	}
shaorui	0:571a1835428e	1185	else
shaorui	0:571a1835428e	1186	{
shaorui	0:571a1835428e	1187	(__IO uint16_t)OPTCR1_BYTE2_ADDRESS &= (~OB_PCROP);
shaorui	0:571a1835428e	1188	}
shaorui	0:571a1835428e	1189	}
shaorui	0:571a1835428e	1190	}
shaorui	0:571a1835428e	1191
shaorui	0:571a1835428e	1192
shaorui	0:571a1835428e	1193	/**
shaorui	0:571a1835428e	1194	* @brief Sets the read protection level.
shaorui	0:571a1835428e	1195	* @param OB_RDP: specifies the read protection level.
shaorui	0:571a1835428e	1196	* This parameter can be one of the following values:
shaorui	0:571a1835428e	1197	* @arg OB_RDP_Level_0: No protection
shaorui	0:571a1835428e	1198	* @arg OB_RDP_Level_1: Read protection of the memory
shaorui	0:571a1835428e	1199	* @arg OB_RDP_Level_2: Full chip protection
shaorui	0:571a1835428e	1200	*
shaorui	0:571a1835428e	1201	* /!\ Warning /!\ When enabling OB_RDP level 2 it's no more possible to go back to level 1 or 0
shaorui	0:571a1835428e	1202	*
shaorui	0:571a1835428e	1203	* @retval None
shaorui	0:571a1835428e	1204	*/
shaorui	0:571a1835428e	1205	void FLASH_OB_RDPConfig(uint8_t OB_RDP)
shaorui	0:571a1835428e	1206	{
shaorui	0:571a1835428e	1207	FLASH_Status status = FLASH_COMPLETE2;
shaorui	0:571a1835428e	1208
shaorui	0:571a1835428e	1209	/* Check the parameters */
shaorui	0:571a1835428e	1210	assert_param(IS_OB_RDP(OB_RDP));
shaorui	0:571a1835428e	1211
shaorui	0:571a1835428e	1212	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	1213
shaorui	0:571a1835428e	1214	if(status == FLASH_COMPLETE2)
shaorui	0:571a1835428e	1215	{
shaorui	0:571a1835428e	1216	(__IO uint8_t)OPTCR_BYTE1_ADDRESS = OB_RDP;
shaorui	0:571a1835428e	1217
shaorui	0:571a1835428e	1218	}
shaorui	0:571a1835428e	1219	}
shaorui	0:571a1835428e	1220
shaorui	0:571a1835428e	1221	/**
shaorui	0:571a1835428e	1222	* @brief Programs the FLASH User Option Byte: IWDG_SW / RST_STOP / RST_STDBY.
shaorui	0:571a1835428e	1223	* @param OB_IWDG: Selects the IWDG mode
shaorui	0:571a1835428e	1224	* This parameter can be one of the following values:
shaorui	0:571a1835428e	1225	* @arg OB_IWDG_SW: Software IWDG selected
shaorui	0:571a1835428e	1226	* @arg OB_IWDG_HW: Hardware IWDG selected
shaorui	0:571a1835428e	1227	* @param OB_STOP: Reset event when entering STOP mode.
shaorui	0:571a1835428e	1228	* This parameter can be one of the following values:
shaorui	0:571a1835428e	1229	* @arg OB_STOP_NoRST: No reset generated when entering in STOP
shaorui	0:571a1835428e	1230	* @arg OB_STOP_RST: Reset generated when entering in STOP
shaorui	0:571a1835428e	1231	* @param OB_STDBY: Reset event when entering Standby mode.
shaorui	0:571a1835428e	1232	* This parameter can be one of the following values:
shaorui	0:571a1835428e	1233	* @arg OB_STDBY_NoRST: No reset generated when entering in STANDBY
shaorui	0:571a1835428e	1234	* @arg OB_STDBY_RST: Reset generated when entering in STANDBY
shaorui	0:571a1835428e	1235	* @retval None
shaorui	0:571a1835428e	1236	*/
shaorui	0:571a1835428e	1237	void FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY)
shaorui	0:571a1835428e	1238	{
shaorui	0:571a1835428e	1239	uint8_t optiontmp = 0xFF;
shaorui	0:571a1835428e	1240	FLASH_Status status = FLASH_COMPLETE2;
shaorui	0:571a1835428e	1241
shaorui	0:571a1835428e	1242	/* Check the parameters */
shaorui	0:571a1835428e	1243	assert_param(IS_OB_IWDG_SOURCE(OB_IWDG));
shaorui	0:571a1835428e	1244	assert_param(IS_OB_STOP_SOURCE(OB_STOP));
shaorui	0:571a1835428e	1245	assert_param(IS_OB_STDBY_SOURCE(OB_STDBY));
shaorui	0:571a1835428e	1246
shaorui	0:571a1835428e	1247	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	1248	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	1249
shaorui	0:571a1835428e	1250	if(status == FLASH_COMPLETE2)
shaorui	0:571a1835428e	1251	{
shaorui	0:571a1835428e	1252	#if defined(STM32F427_437xx) \|\| defined(STM32F429_439xx) \|\| defined(STM32F469_479xx)
shaorui	0:571a1835428e	1253	/* Mask OPTLOCK, OPTSTRT, BOR_LEV and BFB2 bits */
shaorui	0:571a1835428e	1254	optiontmp = (uint8_t)(((__IO uint8_t )OPTCR_BYTE0_ADDRESS) & (uint8_t)0x1F);
shaorui	0:571a1835428e	1255	#endif /* STM32F427_437xx \|\| STM32F429_439xx \|\| STM32F469_479xx */
shaorui	0:571a1835428e	1256
shaorui	0:571a1835428e	1257	#if defined(STM32F40_41xxx) \|\| defined(STM32F401xx) \|\| defined(STM32F410xx) \|\| defined(STM32F411xE) \|\| defined(STM32F446xx)
shaorui	0:571a1835428e	1258	/* Mask OPTLOCK, OPTSTRT and BOR_LEV bits */
shaorui	0:571a1835428e	1259	optiontmp = (uint8_t)(((__IO uint8_t )OPTCR_BYTE0_ADDRESS) & (uint8_t)0x0F);
shaorui	0:571a1835428e	1260	#endif /* STM32F40_41xxx \|\| STM32F401xx \|\| STM32F410xx \|\| STM32F411xE \|\| STM32F446xx */
shaorui	0:571a1835428e	1261
shaorui	0:571a1835428e	1262	/* Update User Option Byte */
shaorui	0:571a1835428e	1263	(__IO uint8_t )OPTCR_BYTE0_ADDRESS = OB_IWDG \| (uint8_t)(OB_STDBY \| (uint8_t)(OB_STOP \| ((uint8_t)optiontmp)));
shaorui	0:571a1835428e	1264	}
shaorui	0:571a1835428e	1265	}
shaorui	0:571a1835428e	1266
shaorui	0:571a1835428e	1267	/**
shaorui	0:571a1835428e	1268	* @brief Configure the Dual Bank Boot.
shaorui	0:571a1835428e	1269	*
shaorui	0:571a1835428e	1270	* @note This function can be used only for STM32F42xxx/43xxx devices.
shaorui	0:571a1835428e	1271	*
shaorui	0:571a1835428e	1272	* @param OB_BOOT: specifies the Dual Bank Boot Option byte.
shaorui	0:571a1835428e	1273	* This parameter can be one of the following values:
shaorui	0:571a1835428e	1274	* @arg OB_Dual_BootEnabled: Dual Bank Boot Enable
shaorui	0:571a1835428e	1275	* @arg OB_Dual_BootDisabled: Dual Bank Boot Disabled
shaorui	0:571a1835428e	1276	* @retval None
shaorui	0:571a1835428e	1277	*/
shaorui	0:571a1835428e	1278	void FLASH_OB_BootConfig(uint8_t OB_BOOT)
shaorui	0:571a1835428e	1279	{
shaorui	0:571a1835428e	1280	/* Check the parameters */
shaorui	0:571a1835428e	1281	assert_param(IS_OB_BOOT(OB_BOOT));
shaorui	0:571a1835428e	1282
shaorui	0:571a1835428e	1283	/* Set Dual Bank Boot */
shaorui	0:571a1835428e	1284	(__IO uint8_t )OPTCR_BYTE0_ADDRESS &= (~FLASH_OPTCR_BFB2);
shaorui	0:571a1835428e	1285	(__IO uint8_t )OPTCR_BYTE0_ADDRESS \|= OB_BOOT;
shaorui	0:571a1835428e	1286
shaorui	0:571a1835428e	1287	}
shaorui	0:571a1835428e	1288
shaorui	0:571a1835428e	1289	/**
shaorui	0:571a1835428e	1290	* @brief Sets the BOR Level.
shaorui	0:571a1835428e	1291	* @param OB_BOR: specifies the Option Bytes BOR Reset Level.
shaorui	0:571a1835428e	1292	* This parameter can be one of the following values:
shaorui	0:571a1835428e	1293	* @arg OB_BOR_LEVEL3: Supply voltage ranges from 2.7 to 3.6 V
shaorui	0:571a1835428e	1294	* @arg OB_BOR_LEVEL2: Supply voltage ranges from 2.4 to 2.7 V
shaorui	0:571a1835428e	1295	* @arg OB_BOR_LEVEL1: Supply voltage ranges from 2.1 to 2.4 V
shaorui	0:571a1835428e	1296	* @arg OB_BOR_OFF: Supply voltage ranges from 1.62 to 2.1 V
shaorui	0:571a1835428e	1297	* @retval None
shaorui	0:571a1835428e	1298	*/
shaorui	0:571a1835428e	1299	void FLASH_OB_BORConfig(uint8_t OB_BOR)
shaorui	0:571a1835428e	1300	{
shaorui	0:571a1835428e	1301	/* Check the parameters */
shaorui	0:571a1835428e	1302	assert_param(IS_OB_BOR(OB_BOR));
shaorui	0:571a1835428e	1303
shaorui	0:571a1835428e	1304	/* Set the BOR Level */
shaorui	0:571a1835428e	1305	(__IO uint8_t )OPTCR_BYTE0_ADDRESS &= (~FLASH_OPTCR_BOR_LEV);
shaorui	0:571a1835428e	1306	(__IO uint8_t )OPTCR_BYTE0_ADDRESS \|= OB_BOR;
shaorui	0:571a1835428e	1307
shaorui	0:571a1835428e	1308	}
shaorui	0:571a1835428e	1309
shaorui	0:571a1835428e	1310	/**
shaorui	0:571a1835428e	1311	* @brief Launch the option byte loading.
shaorui	0:571a1835428e	1312	* @param None
shaorui	0:571a1835428e	1313	* @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
shaorui	0:571a1835428e	1314	* FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
shaorui	0:571a1835428e	1315	*/
shaorui	0:571a1835428e	1316	FLASH_Status FLASH_OB_Launch(void)
shaorui	0:571a1835428e	1317	{
shaorui	0:571a1835428e	1318	FLASH_Status status = FLASH_COMPLETE2;
shaorui	0:571a1835428e	1319
shaorui	0:571a1835428e	1320	/* Set the OPTSTRT bit in OPTCR register */
shaorui	0:571a1835428e	1321	(__IO uint8_t )OPTCR_BYTE0_ADDRESS \|= FLASH_OPTCR_OPTSTRT;
shaorui	0:571a1835428e	1322
shaorui	0:571a1835428e	1323	/* Wait for last operation to be completed */
shaorui	0:571a1835428e	1324	status = FLASH_WaitForLastOperation2();
shaorui	0:571a1835428e	1325
shaorui	0:571a1835428e	1326	return status;
shaorui	0:571a1835428e	1327	}
shaorui	0:571a1835428e	1328
shaorui	0:571a1835428e	1329	/**
shaorui	0:571a1835428e	1330	* @brief Returns the FLASH User Option Bytes values.
shaorui	0:571a1835428e	1331	* @param None
shaorui	0:571a1835428e	1332	* @retval The FLASH User Option Bytes values: IWDG_SW(Bit0), RST_STOP(Bit1)
shaorui	0:571a1835428e	1333	* and RST_STDBY(Bit2).
shaorui	0:571a1835428e	1334	*/
shaorui	0:571a1835428e	1335	uint8_t FLASH_OB_GetUser(void)
shaorui	0:571a1835428e	1336	{
shaorui	0:571a1835428e	1337	/* Return the User Option Byte */
shaorui	0:571a1835428e	1338	return (uint8_t)(FLASH->OPTCR >> 5);
shaorui	0:571a1835428e	1339	}
shaorui	0:571a1835428e	1340
shaorui	0:571a1835428e	1341	/**
shaorui	0:571a1835428e	1342	* @brief Returns the FLASH Write Protection Option Bytes value.
shaorui	0:571a1835428e	1343	* @param None
shaorui	0:571a1835428e	1344	* @retval The FLASH Write Protection Option Bytes value
shaorui	0:571a1835428e	1345	*/
shaorui	0:571a1835428e	1346	uint16_t FLASH_OB_GetWRP(void)
shaorui	0:571a1835428e	1347	{
shaorui	0:571a1835428e	1348	/* Return the FLASH write protection Register value */
shaorui	0:571a1835428e	1349	return ((__IO uint16_t )(OPTCR_BYTE2_ADDRESS));
shaorui	0:571a1835428e	1350	}
shaorui	0:571a1835428e	1351
shaorui	0:571a1835428e	1352	/**
shaorui	0:571a1835428e	1353	* @brief Returns the FLASH Write Protection Option Bytes value.
shaorui	0:571a1835428e	1354	*
shaorui	0:571a1835428e	1355	* @note This function can be used only for STM32F42xxx/43xxx devices.
shaorui	0:571a1835428e	1356	*
shaorui	0:571a1835428e	1357	* @param None
shaorui	0:571a1835428e	1358	* @retval The FLASH Write Protection Option Bytes value
shaorui	0:571a1835428e	1359	*/
shaorui	0:571a1835428e	1360	uint16_t FLASH_OB_GetWRP1(void)
shaorui	0:571a1835428e	1361	{
shaorui	0:571a1835428e	1362	/* Return the FLASH write protection Register value */
shaorui	0:571a1835428e	1363	return ((__IO uint16_t )(OPTCR1_BYTE2_ADDRESS));
shaorui	0:571a1835428e	1364	}
shaorui	0:571a1835428e	1365
shaorui	0:571a1835428e	1366	/**
shaorui	0:571a1835428e	1367	* @brief Returns the FLASH PC Read/Write Protection Option Bytes value.
shaorui	0:571a1835428e	1368	*
shaorui	0:571a1835428e	1369	* @note This function can be used only for STM32F42xxx/43xxx devices and STM32F401xx/411xE devices.
shaorui	0:571a1835428e	1370	*
shaorui	0:571a1835428e	1371	* @param None
shaorui	0:571a1835428e	1372	* @retval The FLASH PC Read/Write Protection Option Bytes value
shaorui	0:571a1835428e	1373	*/
shaorui	0:571a1835428e	1374	uint16_t FLASH_OB_GetPCROP(void)
shaorui	0:571a1835428e	1375	{
shaorui	0:571a1835428e	1376	/* Return the FLASH PC Read/write protection Register value */
shaorui	0:571a1835428e	1377	return ((__IO uint16_t )(OPTCR_BYTE2_ADDRESS));
shaorui	0:571a1835428e	1378	}
shaorui	0:571a1835428e	1379
shaorui	0:571a1835428e	1380	/**
shaorui	0:571a1835428e	1381	* @brief Returns the FLASH PC Read/Write Protection Option Bytes value.
shaorui	0:571a1835428e	1382	*
shaorui	0:571a1835428e	1383	* @note This function can be used only for STM32F42xxx/43xxx devices.
shaorui	0:571a1835428e	1384	*
shaorui	0:571a1835428e	1385	* @param None
shaorui	0:571a1835428e	1386	* @retval The FLASH PC Read/Write Protection Option Bytes value
shaorui	0:571a1835428e	1387	*/
shaorui	0:571a1835428e	1388	uint16_t FLASH_OB_GetPCROP1(void)
shaorui	0:571a1835428e	1389	{
shaorui	0:571a1835428e	1390	/* Return the FLASH write protection Register value */
shaorui	0:571a1835428e	1391	return ((__IO uint16_t )(OPTCR1_BYTE2_ADDRESS));
shaorui	0:571a1835428e	1392	}
shaorui	0:571a1835428e	1393
shaorui	0:571a1835428e	1394	/**
shaorui	0:571a1835428e	1395	* @brief Returns the FLASH Read Protection level.
shaorui	0:571a1835428e	1396	* @param None
shaorui	0:571a1835428e	1397	* @retval FLASH ReadOut Protection Status:
shaorui	0:571a1835428e	1398	* - SET, when OB_RDP_Level_1 or OB_RDP_Level_2 is set
shaorui	0:571a1835428e	1399	* - RESET, when OB_RDP_Level_0 is set
shaorui	0:571a1835428e	1400	*/
shaorui	0:571a1835428e	1401	FlagStatus FLASH_OB_GetRDP(void)
shaorui	0:571a1835428e	1402	{
shaorui	0:571a1835428e	1403	FlagStatus readstatus = RESET;
shaorui	0:571a1835428e	1404
shaorui	0:571a1835428e	1405	if (((__IO uint8_t)(OPTCR_BYTE1_ADDRESS) != (uint8_t)OB_RDP_Level_0))
shaorui	0:571a1835428e	1406	{
shaorui	0:571a1835428e	1407	readstatus = SET;
shaorui	0:571a1835428e	1408	}
shaorui	0:571a1835428e	1409	else
shaorui	0:571a1835428e	1410	{
shaorui	0:571a1835428e	1411	readstatus = RESET;
shaorui	0:571a1835428e	1412	}
shaorui	0:571a1835428e	1413	return readstatus;
shaorui	0:571a1835428e	1414	}
shaorui	0:571a1835428e	1415
shaorui	0:571a1835428e	1416	/**
shaorui	0:571a1835428e	1417	* @brief Returns the FLASH BOR level.
shaorui	0:571a1835428e	1418	* @param None
shaorui	0:571a1835428e	1419	* @retval The FLASH BOR level:
shaorui	0:571a1835428e	1420	* - OB_BOR_LEVEL3: Supply voltage ranges from 2.7 to 3.6 V
shaorui	0:571a1835428e	1421	* - OB_BOR_LEVEL2: Supply voltage ranges from 2.4 to 2.7 V
shaorui	0:571a1835428e	1422	* - OB_BOR_LEVEL1: Supply voltage ranges from 2.1 to 2.4 V
shaorui	0:571a1835428e	1423	* - OB_BOR_OFF : Supply voltage ranges from 1.62 to 2.1 V
shaorui	0:571a1835428e	1424	*/
shaorui	0:571a1835428e	1425	uint8_t FLASH_OB_GetBOR(void)
shaorui	0:571a1835428e	1426	{
shaorui	0:571a1835428e	1427	/* Return the FLASH BOR level */
shaorui	0:571a1835428e	1428	return (uint8_t)((__IO uint8_t )(OPTCR_BYTE0_ADDRESS) & (uint8_t)0x0C);
shaorui	0:571a1835428e	1429	}
shaorui	0:571a1835428e	1430
shaorui	0:571a1835428e	1431	/**
shaorui	0:571a1835428e	1432	* @}
shaorui	0:571a1835428e	1433	*/
shaorui	0:571a1835428e	1434
shaorui	0:571a1835428e	1435	/** @defgroup FLASH_Group4 Interrupts and flags management functions
shaorui	0:571a1835428e	1436	* @brief Interrupts and flags management functions
shaorui	0:571a1835428e	1437	*
shaorui	0:571a1835428e	1438	@verbatim
shaorui	0:571a1835428e	1439	===============================================================================
shaorui	0:571a1835428e	1440	##### Interrupts and flags management functions #####
shaorui	0:571a1835428e	1441	===============================================================================
shaorui	0:571a1835428e	1442	@endverbatim
shaorui	0:571a1835428e	1443	* @{
shaorui	0:571a1835428e	1444	*/
shaorui	0:571a1835428e	1445
shaorui	0:571a1835428e	1446	/**
shaorui	0:571a1835428e	1447	* @brief Enables or disables the specified FLASH interrupts.
shaorui	0:571a1835428e	1448	* @param FLASH_IT: specifies the FLASH interrupt sources to be enabled or disabled.
shaorui	0:571a1835428e	1449	* This parameter can be any combination of the following values:
shaorui	0:571a1835428e	1450	* @arg FLASH_IT_ERR: FLASH Error Interrupt
shaorui	0:571a1835428e	1451	* @arg FLASH_IT_EOP: FLASH end of operation Interrupt
shaorui	0:571a1835428e	1452	* @retval None
shaorui	0:571a1835428e	1453	*/
shaorui	0:571a1835428e	1454	void FLASH_ITConfig(uint32_t FLASH_IT, FunctionalState NewState)
shaorui	0:571a1835428e	1455	{
shaorui	0:571a1835428e	1456	/* Check the parameters */
shaorui	0:571a1835428e	1457	assert_param(IS_FLASH_IT(FLASH_IT));
shaorui	0:571a1835428e	1458	assert_param(IS_FUNCTIONAL_STATE(NewState));
shaorui	0:571a1835428e	1459
shaorui	0:571a1835428e	1460	if(NewState != DISABLE)
shaorui	0:571a1835428e	1461	{
shaorui	0:571a1835428e	1462	/* Enable the interrupt sources */
shaorui	0:571a1835428e	1463	FLASH->CR \|= FLASH_IT;
shaorui	0:571a1835428e	1464	}
shaorui	0:571a1835428e	1465	else
shaorui	0:571a1835428e	1466	{
shaorui	0:571a1835428e	1467	/* Disable the interrupt sources */
shaorui	0:571a1835428e	1468	FLASH->CR &= ~(uint32_t)FLASH_IT;
shaorui	0:571a1835428e	1469	}
shaorui	0:571a1835428e	1470	}
shaorui	0:571a1835428e	1471
shaorui	0:571a1835428e	1472	/**
shaorui	0:571a1835428e	1473	* @brief Checks whether the specified FLASH flag is set or not.
shaorui	0:571a1835428e	1474	* @param FLASH_FLAG: specifies the FLASH flag to check.
shaorui	0:571a1835428e	1475	* This parameter can be one of the following values:
shaorui	0:571a1835428e	1476	* @arg FLASH_FLAG_EOP: FLASH End of Operation flag
shaorui	0:571a1835428e	1477	* @arg FLASH_FLAG_OPERR: FLASH operation Error flag
shaorui	0:571a1835428e	1478	* @arg FLASH_FLAG_WRPERR: FLASH Write protected error flag
shaorui	0:571a1835428e	1479	* @arg FLASH_FLAG_PGAERR: FLASH Programming Alignment error flag
shaorui	0:571a1835428e	1480	* @arg FLASH_FLAG_PGPERR: FLASH Programming Parallelism error flag
shaorui	0:571a1835428e	1481	* @arg FLASH_FLAG_PGSERR: FLASH Programming Sequence error flag
shaorui	0:571a1835428e	1482	* @arg FLASH_FLAG_RDERR: FLASH (PCROP) Read Protection error flag (STM32F42xx/43xxx and STM32F401xx/411xE devices)
shaorui	0:571a1835428e	1483	* @arg FLASH_FLAG_BSY: FLASH Busy flag
shaorui	0:571a1835428e	1484	* @retval The new state of FLASH_FLAG (SET or RESET).
shaorui	0:571a1835428e	1485	*/
shaorui	0:571a1835428e	1486	FlagStatus FLASH_GetFlagStatus(uint32_t FLASH_FLAG)
shaorui	0:571a1835428e	1487	{
shaorui	0:571a1835428e	1488	FlagStatus bitstatus = RESET;
shaorui	0:571a1835428e	1489	/* Check the parameters */
shaorui	0:571a1835428e	1490	assert_param(IS_FLASH_GET_FLAG(FLASH_FLAG));
shaorui	0:571a1835428e	1491
shaorui	0:571a1835428e	1492	if((FLASH->SR & FLASH_FLAG) != (uint32_t)RESET)
shaorui	0:571a1835428e	1493	{
shaorui	0:571a1835428e	1494	bitstatus = SET;
shaorui	0:571a1835428e	1495	}
shaorui	0:571a1835428e	1496	else
shaorui	0:571a1835428e	1497	{
shaorui	0:571a1835428e	1498	bitstatus = RESET;
shaorui	0:571a1835428e	1499	}
shaorui	0:571a1835428e	1500	/* Return the new state of FLASH_FLAG (SET or RESET) */
shaorui	0:571a1835428e	1501	return bitstatus;
shaorui	0:571a1835428e	1502	}
shaorui	0:571a1835428e	1503
shaorui	0:571a1835428e	1504	/**
shaorui	0:571a1835428e	1505	* @brief Clears the FLASH's pending flags.
shaorui	0:571a1835428e	1506	* @param FLASH_FLAG: specifies the FLASH flags to clear.
shaorui	0:571a1835428e	1507	* This parameter can be any combination of the following values:
shaorui	0:571a1835428e	1508	* @arg FLASH_FLAG_EOP: FLASH End of Operation flag
shaorui	0:571a1835428e	1509	* @arg FLASH_FLAG_OPERR: FLASH operation Error flag
shaorui	0:571a1835428e	1510	* @arg FLASH_FLAG_WRPERR: FLASH Write protected error flag
shaorui	0:571a1835428e	1511	* @arg FLASH_FLAG_PGAERR: FLASH Programming Alignment error flag
shaorui	0:571a1835428e	1512	* @arg FLASH_FLAG_PGPERR: FLASH Programming Parallelism error flag
shaorui	0:571a1835428e	1513	* @arg FLASH_FLAG_PGSERR: FLASH Programming Sequence error flag
shaorui	0:571a1835428e	1514	* @arg FLASH_FLAG_RDERR: FLASH Read Protection error flag (STM32F42xx/43xxx and STM32F401xx/411xE devices)
shaorui	0:571a1835428e	1515	* @retval None
shaorui	0:571a1835428e	1516	*/
shaorui	0:571a1835428e	1517	void FLASH_ClearFlag(uint32_t FLASH_FLAG)
shaorui	0:571a1835428e	1518	{
shaorui	0:571a1835428e	1519	/* Check the parameters */
shaorui	0:571a1835428e	1520	assert_param(IS_FLASH_CLEAR_FLAG(FLASH_FLAG));
shaorui	0:571a1835428e	1521
shaorui	0:571a1835428e	1522	/* Clear the flags */
shaorui	0:571a1835428e	1523	FLASH->SR = FLASH_FLAG;
shaorui	0:571a1835428e	1524	}
shaorui	0:571a1835428e	1525
shaorui	0:571a1835428e	1526	/**
shaorui	0:571a1835428e	1527	* @brief Returns the FLASH Status.
shaorui	0:571a1835428e	1528	* @param None
shaorui	0:571a1835428e	1529	* @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
shaorui	0:571a1835428e	1530	* FLASH_ERROR_WRP2, FLASH_ERROR_RD2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
shaorui	0:571a1835428e	1531	*/
shaorui	0:571a1835428e	1532	FLASH_Status FLASH_GetStatus(void)
shaorui	0:571a1835428e	1533	{
shaorui	0:571a1835428e	1534	FLASH_Status flashstatus = FLASH_COMPLETE2;
shaorui	0:571a1835428e	1535
shaorui	0:571a1835428e	1536	if((FLASH->SR & FLASH_FLAG_BSY) == FLASH_FLAG_BSY)
shaorui	0:571a1835428e	1537	{
shaorui	0:571a1835428e	1538	flashstatus = FLASH_BUSY2;
shaorui	0:571a1835428e	1539	}
shaorui	0:571a1835428e	1540	else
shaorui	0:571a1835428e	1541	{
shaorui	0:571a1835428e	1542	if((FLASH->SR & FLASH_FLAG_WRPERR) != (uint32_t)0x00)
shaorui	0:571a1835428e	1543	{
shaorui	0:571a1835428e	1544	flashstatus = FLASH_ERROR_WRP2;
shaorui	0:571a1835428e	1545	}
shaorui	0:571a1835428e	1546	else
shaorui	0:571a1835428e	1547	{
shaorui	0:571a1835428e	1548	if((FLASH->SR & FLASH_FLAG_RDERR) != (uint32_t)0x00)
shaorui	0:571a1835428e	1549	{
shaorui	0:571a1835428e	1550	flashstatus = FLASH_ERROR_RD2;
shaorui	0:571a1835428e	1551	}
shaorui	0:571a1835428e	1552	else
shaorui	0:571a1835428e	1553	{
shaorui	0:571a1835428e	1554	if((FLASH->SR & (uint32_t)0xE0) != (uint32_t)0x00)
shaorui	0:571a1835428e	1555	{
shaorui	0:571a1835428e	1556	flashstatus = FLASH_ERROR_PROGRAM2;
shaorui	0:571a1835428e	1557	}
shaorui	0:571a1835428e	1558	else
shaorui	0:571a1835428e	1559	{
shaorui	0:571a1835428e	1560	if((FLASH->SR & FLASH_FLAG_OPERR) != (uint32_t)0x00)
shaorui	0:571a1835428e	1561	{
shaorui	0:571a1835428e	1562	flashstatus = FLASH_ERROR_OPERATION2;
shaorui	0:571a1835428e	1563	}
shaorui	0:571a1835428e	1564	else
shaorui	0:571a1835428e	1565	{
shaorui	0:571a1835428e	1566	flashstatus = FLASH_COMPLETE2;
shaorui	0:571a1835428e	1567	}
shaorui	0:571a1835428e	1568	}
shaorui	0:571a1835428e	1569	}
shaorui	0:571a1835428e	1570	}
shaorui	0:571a1835428e	1571	}
shaorui	0:571a1835428e	1572	/* Return the FLASH Status */
shaorui	0:571a1835428e	1573	return flashstatus;
shaorui	0:571a1835428e	1574	}
shaorui	0:571a1835428e	1575
shaorui	0:571a1835428e	1576	/**
shaorui	0:571a1835428e	1577	* @brief Waits for a FLASH operation to complete.
shaorui	0:571a1835428e	1578	* @param None
shaorui	0:571a1835428e	1579	* @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
shaorui	0:571a1835428e	1580	* FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
shaorui	0:571a1835428e	1581	*/
shaorui	0:571a1835428e	1582	FLASH_Status FLASH_WaitForLastOperation2(void)
shaorui	0:571a1835428e	1583	{
shaorui	0:571a1835428e	1584	__IO FLASH_Status status = FLASH_COMPLETE2;
shaorui	0:571a1835428e	1585
shaorui	0:571a1835428e	1586	/* Check for the FLASH Status */
shaorui	0:571a1835428e	1587	status = FLASH_GetStatus();
shaorui	0:571a1835428e	1588
shaorui	0:571a1835428e	1589	/* Wait for the FLASH operation to complete by polling on BUSY flag to be reset.
shaorui	0:571a1835428e	1590	Even if the FLASH operation fails, the BUSY flag will be reset and an error
shaorui	0:571a1835428e	1591	flag will be set */
shaorui	0:571a1835428e	1592	while(status == FLASH_BUSY2)
shaorui	0:571a1835428e	1593	{
shaorui	0:571a1835428e	1594	status = FLASH_GetStatus();
shaorui	0:571a1835428e	1595	}
shaorui	0:571a1835428e	1596	/* Return the operation status */
shaorui	0:571a1835428e	1597	return status;
shaorui	0:571a1835428e	1598	}
shaorui	0:571a1835428e	1599
shaorui	0:571a1835428e	1600	/**
shaorui	0:571a1835428e	1601	* @}
shaorui	0:571a1835428e	1602	*/
shaorui	0:571a1835428e	1603
shaorui	0:571a1835428e	1604	/**
shaorui	0:571a1835428e	1605	* @}
shaorui	0:571a1835428e	1606	*/
shaorui	0:571a1835428e	1607
shaorui	0:571a1835428e	1608	/**
shaorui	0:571a1835428e	1609	* @}
shaorui	0:571a1835428e	1610	*/
shaorui	0:571a1835428e	1611
shaorui	0:571a1835428e	1612	/**
shaorui	0:571a1835428e	1613	* @}
shaorui	0:571a1835428e	1614	*/
shaorui	0:571a1835428e	1615
shaorui	0:571a1835428e	1616	/********************** (C) COPYRIGHT STMicroelectronics *END OF FILE**/

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	25 Jan 2021
Imports:	1
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	1

FlashWriter/stm32f4xx_flash.c@0:571a1835428e, 2021-01-25 (annotated)

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