STM32_IAP_internal_flash_write - STM32_IAP demo.

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Norimasa Okamoto / Mbed 2 deprecated STM32_IAP_internal_flash_write

STM32_IAP demo.

Dependencies: STM32_IAP mbed

Fork of IAP_internal_flash_write by Tedd OKANO

IAP.cpp@0:b802bd2f4cc9, 2010-03-12 (annotated)

Committer:: okano
Date:: Fri Mar 12 10:24:57 2010 +0000
Revision:: 0:b802bd2f4cc9

Who changed what in which revision?

User	Revision	Line number	New contents of line
okano	0:b802bd2f4cc9	1	/** IAP : internal Flash memory access library
okano	0:b802bd2f4cc9	2	*
okano	0:b802bd2f4cc9	3	* The internal Flash memory access is described in the LPC1768 usermanual.
okano	0:b802bd2f4cc9	4	* http://www.nxp.com/documents/user_manual/UM10360.pdf
okano	0:b802bd2f4cc9	5	*
okano	0:b802bd2f4cc9	6	* Chapter 2: "LPC17xx Memory map"
okano	0:b802bd2f4cc9	7	* Chapter 32: "LPC17xx Flash memory interface and programming"
okano	0:b802bd2f4cc9	8	* refering Rev. 01 - 4 January 2010
okano	0:b802bd2f4cc9	9	*
okano	0:b802bd2f4cc9	10	* Released under the MIT License: http://mbed.org/license/mit
okano	0:b802bd2f4cc9	11	*
okano	0:b802bd2f4cc9	12	* revision 1.0 09-Mar-2010 1st release
okano	0:b802bd2f4cc9	13	* revision 1.1 12-Mar-2010 chaged: to make possible to reserve flash area for user
okano	0:b802bd2f4cc9	14	* it can be set by USER_FLASH_AREA_START and USER_FLASH_AREA_SIZE in IAP.h
okano	0:b802bd2f4cc9	15	*/
okano	0:b802bd2f4cc9	16
okano	0:b802bd2f4cc9	17	#include "mbed.h"
okano	0:b802bd2f4cc9	18	#include "IAP.h"
okano	0:b802bd2f4cc9	19
okano	0:b802bd2f4cc9	20	#define USER_FLASH_AREA_START_STR( x ) STR( x )
okano	0:b802bd2f4cc9	21	#define STR( x ) #x
okano	0:b802bd2f4cc9	22
okano	0:b802bd2f4cc9	23	unsigned char user_area[ USER_FLASH_AREA_SIZE ] __attribute__((section( ".ARM.__at_" USER_FLASH_AREA_START_STR( USER_FLASH_AREA_START ) ), zero_init));
okano	0:b802bd2f4cc9	24
okano	0:b802bd2f4cc9	25
okano	0:b802bd2f4cc9	26	/*
okano	0:b802bd2f4cc9	27	* Reserve of flash area is explained by Igor. Please refer next URL
okano	0:b802bd2f4cc9	28	* http://mbed.org/users/okano/notebook/iap-in-application-programming-internal-flash-eras/?page=1#comment-271
okano	0:b802bd2f4cc9	29	*/
okano	0:b802bd2f4cc9	30
okano	0:b802bd2f4cc9	31	//unsigned char user_area[ size ] __attribute__((section(".ARM.__at_0x78000"), zero_init));
okano	0:b802bd2f4cc9	32
okano	0:b802bd2f4cc9	33	/*
okano	0:b802bd2f4cc9	34	* IAP command codes
okano	0:b802bd2f4cc9	35	* Table 589. "IAP Command Summary", Chapter 8. "IAP commands", usermanual
okano	0:b802bd2f4cc9	36	*/
okano	0:b802bd2f4cc9	37
okano	0:b802bd2f4cc9	38	enum command_code
okano	0:b802bd2f4cc9	39	{
okano	0:b802bd2f4cc9	40	IAPCommand_Prepare_sector_for_write_operation = 50,
okano	0:b802bd2f4cc9	41	IAPCommand_Copy_RAM_to_Flash,
okano	0:b802bd2f4cc9	42	IAPCommand_Erase_sector,
okano	0:b802bd2f4cc9	43	IAPCommand_Blank_check_sector,
okano	0:b802bd2f4cc9	44	IAPCommand_Read_part_ID,
okano	0:b802bd2f4cc9	45	IAPCommand_Read_Boot_Code_version,
okano	0:b802bd2f4cc9	46	IAPCommand_Compare,
okano	0:b802bd2f4cc9	47	IAPCommand_Reinvoke_ISP,
okano	0:b802bd2f4cc9	48	IAPCommand_Read_device_serial_number
okano	0:b802bd2f4cc9	49	};
okano	0:b802bd2f4cc9	50
okano	0:b802bd2f4cc9	51
okano	0:b802bd2f4cc9	52	/** Read part identification number
okano	0:b802bd2f4cc9	53	*
okano	0:b802bd2f4cc9	54	* @return device ID
okano	0:b802bd2f4cc9	55	* @see read_serial()
okano	0:b802bd2f4cc9	56	*/
okano	0:b802bd2f4cc9	57
okano	0:b802bd2f4cc9	58	int IAP::read_ID( void ) {
okano	0:b802bd2f4cc9	59	IAP_command[ 0 ] = IAPCommand_Read_part_ID;
okano	0:b802bd2f4cc9	60
okano	0:b802bd2f4cc9	61	iap_entry( IAP_command, IAP_result );
okano	0:b802bd2f4cc9	62
okano	0:b802bd2f4cc9	63	// return ( (int)IAP_result[ 0 ] );
okano	0:b802bd2f4cc9	64	return ( (int)IAP_result[ 1 ] ); // to return the number itself (this command always returns CMD_SUCCESS)
okano	0:b802bd2f4cc9	65	}
okano	0:b802bd2f4cc9	66
okano	0:b802bd2f4cc9	67
okano	0:b802bd2f4cc9	68	/** Read device serial number
okano	0:b802bd2f4cc9	69	*
okano	0:b802bd2f4cc9	70	* @return device serial number
okano	0:b802bd2f4cc9	71	* @see read_ID()
okano	0:b802bd2f4cc9	72	*/
okano	0:b802bd2f4cc9	73
okano	0:b802bd2f4cc9	74	int IAP::read_serial( void ) {
okano	0:b802bd2f4cc9	75	IAP_command[ 0 ] = IAPCommand_Read_device_serial_number;
okano	0:b802bd2f4cc9	76
okano	0:b802bd2f4cc9	77	iap_entry( IAP_command, IAP_result );
okano	0:b802bd2f4cc9	78
okano	0:b802bd2f4cc9	79	// return ( (int)IAP_result[ 0 ] );
okano	0:b802bd2f4cc9	80	return ( (int)IAP_result[ 1 ] ); // to return the number itself (this command always returns CMD_SUCCESS)
okano	0:b802bd2f4cc9	81	}
okano	0:b802bd2f4cc9	82
okano	0:b802bd2f4cc9	83
okano	0:b802bd2f4cc9	84	/** Blank check sector(s)
okano	0:b802bd2f4cc9	85	*
okano	0:b802bd2f4cc9	86	* @param start a Start Sector Number
okano	0:b802bd2f4cc9	87	* @param end an End Sector Number (should be greater than or equal to start sector number).
okano	0:b802bd2f4cc9	88	* @return error code: CMD_SUCCESS \| BUSY \| SECTOR_NOT_BLANK \| INVALID_SECTOR
okano	0:b802bd2f4cc9	89	*/
okano	0:b802bd2f4cc9	90
okano	0:b802bd2f4cc9	91	int IAP::blank_check( int start, int end ) {
okano	0:b802bd2f4cc9	92	IAP_command[ 0 ] = IAPCommand_Blank_check_sector;
okano	0:b802bd2f4cc9	93	IAP_command[ 1 ] = (unsigned int)start; // Start Sector Number
okano	0:b802bd2f4cc9	94	IAP_command[ 2 ] = (unsigned int)end; // End Sector Number (should be greater than or equal to start sector number)
okano	0:b802bd2f4cc9	95
okano	0:b802bd2f4cc9	96	iap_entry( IAP_command, IAP_result );
okano	0:b802bd2f4cc9	97
okano	0:b802bd2f4cc9	98	return ( (int)IAP_result[ 0 ] );
okano	0:b802bd2f4cc9	99	}
okano	0:b802bd2f4cc9	100
okano	0:b802bd2f4cc9	101
okano	0:b802bd2f4cc9	102	/** Erase Sector(s)
okano	0:b802bd2f4cc9	103	*
okano	0:b802bd2f4cc9	104	* @param start a Start Sector Number
okano	0:b802bd2f4cc9	105	* @param end an End Sector Number (should be greater than or equal to start sector number).
okano	0:b802bd2f4cc9	106	* @return error code: CMD_SUCCESS \| BUSY \| SECTOR_NOT_PREPARED_FOR_WRITE_OPERATION \| INVALID_SECTOR
okano	0:b802bd2f4cc9	107	*/
okano	0:b802bd2f4cc9	108
okano	0:b802bd2f4cc9	109	int IAP::erase( int start, int end ) {
okano	0:b802bd2f4cc9	110	IAP_command[ 0 ] = IAPCommand_Erase_sector;
okano	0:b802bd2f4cc9	111	IAP_command[ 1 ] = (unsigned int)start; // Start Sector Number
okano	0:b802bd2f4cc9	112	IAP_command[ 2 ] = (unsigned int)end; // End Sector Number (should be greater than or equal to start sector number)
okano	0:b802bd2f4cc9	113	IAP_command[ 3 ] = cclk_kHz; // CPU Clock Frequency (CCLK) in kHz
okano	0:b802bd2f4cc9	114
okano	0:b802bd2f4cc9	115	iap_entry( IAP_command, IAP_result );
okano	0:b802bd2f4cc9	116
okano	0:b802bd2f4cc9	117	return ( (int)IAP_result[ 0 ] );
okano	0:b802bd2f4cc9	118	}
okano	0:b802bd2f4cc9	119
okano	0:b802bd2f4cc9	120
okano	0:b802bd2f4cc9	121	/** Prepare sector(s) for write operation
okano	0:b802bd2f4cc9	122	*
okano	0:b802bd2f4cc9	123	* @param start a Start Sector Number
okano	0:b802bd2f4cc9	124	* @param end an End Sector Number (should be greater than or equal to start sector number).
okano	0:b802bd2f4cc9	125	* @return error code: CMD_SUCCESS \| BUSY \| INVALID_SECTOR
okano	0:b802bd2f4cc9	126	*/
okano	0:b802bd2f4cc9	127
okano	0:b802bd2f4cc9	128	int IAP::prepare( int start, int end ) {
okano	0:b802bd2f4cc9	129	IAP_command[ 0 ] = IAPCommand_Prepare_sector_for_write_operation;
okano	0:b802bd2f4cc9	130	IAP_command[ 1 ] = (unsigned int)start; // Start Sector Number
okano	0:b802bd2f4cc9	131	IAP_command[ 2 ] = (unsigned int)end; // End Sector Number (should be greater than or equal to start sector number).
okano	0:b802bd2f4cc9	132
okano	0:b802bd2f4cc9	133	iap_entry( IAP_command, IAP_result );
okano	0:b802bd2f4cc9	134
okano	0:b802bd2f4cc9	135	return ( (int)IAP_result[ 0 ] );
okano	0:b802bd2f4cc9	136	}
okano	0:b802bd2f4cc9	137
okano	0:b802bd2f4cc9	138
okano	0:b802bd2f4cc9	139	/** Copy RAM to Flash
okano	0:b802bd2f4cc9	140	*
okano	0:b802bd2f4cc9	141	* @param source_addr Source RAM address from which data bytes are to be read. This address should be a word boundary.
okano	0:b802bd2f4cc9	142	* @param target_addr Destination flash address where data bytes are to be written. This address should be a 256 byte boundary.
okano	0:b802bd2f4cc9	143	* @param size Number of bytes to be written. Should be 256 \| 512 \| 1024 \| 4096.
okano	0:b802bd2f4cc9	144	* @return error code: CMD_SUCCESS \| SRC_ADDR_ERROR (Address not a word boundary) \| DST_ADDR_ERROR (Address not on correct boundary) \| SRC_ADDR_NOT_MAPPED \| DST_ADDR_NOT_MAPPED \| COUNT_ERROR (Byte count is not 256 \| 512 \| 1024 \| 4096) \| SECTOR_NOT_PREPARED_FOR_WRITE_OPERATION \| BUSY
okano	0:b802bd2f4cc9	145	*/
okano	0:b802bd2f4cc9	146
okano	0:b802bd2f4cc9	147	int IAP::write( char source_addr, char target_addr, int size ) {
okano	0:b802bd2f4cc9	148	IAP_command[ 0 ] = IAPCommand_Copy_RAM_to_Flash;
okano	0:b802bd2f4cc9	149	IAP_command[ 1 ] = (unsigned int)target_addr; // Destination flash address where data bytes are to be written. This address should be a 256 byte boundary.
okano	0:b802bd2f4cc9	150	IAP_command[ 2 ] = (unsigned int)source_addr; // Source RAM address from which data bytes are to be read. This address should be a word boundary.
okano	0:b802bd2f4cc9	151	IAP_command[ 3 ] = size; // Number of bytes to be written. Should be 256 \| 512 \| 1024 \| 4096.
okano	0:b802bd2f4cc9	152	IAP_command[ 4 ] = cclk_kHz; // CPU Clock Frequency (CCLK) in kHz.
okano	0:b802bd2f4cc9	153
okano	0:b802bd2f4cc9	154	iap_entry( IAP_command, IAP_result );
okano	0:b802bd2f4cc9	155
okano	0:b802bd2f4cc9	156	return ( (int)IAP_result[ 0 ] );
okano	0:b802bd2f4cc9	157	}
okano	0:b802bd2f4cc9	158
okano	0:b802bd2f4cc9	159
okano	0:b802bd2f4cc9	160	/** Compare <address1> <address2> <no of bytes>
okano	0:b802bd2f4cc9	161	*
okano	0:b802bd2f4cc9	162	* @param source_addr Starting flash or RAM address of data bytes to be compared. This address should be a word boundary.
okano	0:b802bd2f4cc9	163	* @param target_addr Starting flash or RAM address of data bytes to be compared. This address should be a word boundary.
okano	0:b802bd2f4cc9	164	* @param size Number of bytes to be compared; should be a multiple of 4.
okano	0:b802bd2f4cc9	165	* @return error code: CMD_SUCCESS \| COMPARE_ERROR \| COUNT_ERROR (Byte count is not a multiple of 4) \| ADDR_ERROR \| ADDR_NOT_MAPPED
okano	0:b802bd2f4cc9	166	*/
okano	0:b802bd2f4cc9	167
okano	0:b802bd2f4cc9	168	int IAP::compare( char source_addr, char target_addr, int size ) {
okano	0:b802bd2f4cc9	169	IAP_command[ 0 ] = IAPCommand_Compare;
okano	0:b802bd2f4cc9	170	IAP_command[ 1 ] = (unsigned int)target_addr; // Starting flash or RAM address of data bytes to be compared. This address should be a word boundary.
okano	0:b802bd2f4cc9	171	IAP_command[ 2 ] = (unsigned int)source_addr; // Starting flash or RAM address of data bytes to be compared. This address should be a word boundary.
okano	0:b802bd2f4cc9	172	IAP_command[ 3 ] = size; // Number of bytes to be compared; should be a multiple of 4.
okano	0:b802bd2f4cc9	173
okano	0:b802bd2f4cc9	174	iap_entry( IAP_command, IAP_result );
okano	0:b802bd2f4cc9	175
okano	0:b802bd2f4cc9	176	return ( (int)IAP_result[ 0 ] );
okano	0:b802bd2f4cc9	177	}
okano	0:b802bd2f4cc9	178
okano	0:b802bd2f4cc9	179
okano	0:b802bd2f4cc9	180	/** Get user reserved flash start address
okano	0:b802bd2f4cc9	181	*
okano	0:b802bd2f4cc9	182	* @return start address of user reserved flash memory
okano	0:b802bd2f4cc9	183	* @see reserved_flash_area_size()
okano	0:b802bd2f4cc9	184	*/
okano	0:b802bd2f4cc9	185
okano	0:b802bd2f4cc9	186	char * IAP::reserved_flash_area_start( void )
okano	0:b802bd2f4cc9	187	{
okano	0:b802bd2f4cc9	188	return ( (char *)USER_FLASH_AREA_START );
okano	0:b802bd2f4cc9	189	}
okano	0:b802bd2f4cc9	190
okano	0:b802bd2f4cc9	191
okano	0:b802bd2f4cc9	192	/** Get user reserved flash size
okano	0:b802bd2f4cc9	193	*
okano	0:b802bd2f4cc9	194	* @return size of user reserved flash memory
okano	0:b802bd2f4cc9	195	* @see reserved_flash_area_start()
okano	0:b802bd2f4cc9	196	*/
okano	0:b802bd2f4cc9	197
okano	0:b802bd2f4cc9	198	int IAP::reserved_flash_area_size( void )
okano	0:b802bd2f4cc9	199	{
okano	0:b802bd2f4cc9	200	return ( USER_FLASH_AREA_SIZE );
okano	0:b802bd2f4cc9	201	}
okano	0:b802bd2f4cc9	202

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	10 Apr 2016
Imports:	19
Forks:	0
Commits:	11
Dependents:	0
Dependencies:	2
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The code in this repository is MIT licensed.

IAP.cpp@0:b802bd2f4cc9, 2010-03-12 (annotated)

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