IAP_2368 - In Application Programming with support for both …

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Jason Engelman / Mbed 2 deprecated IAP_2368

In Application Programming with support for both LPC1768 and LPC2368. Original library here http://mbed.org/users/okano/notebook/iap-in-application-programming-internal-flash-eras/

Dependencies: mbed

main.cpp@0:406ffaf4d93c, 2011-07-11 (annotated)

Committer:: tecnosys
Date:: Mon Jul 11 01:53:18 2011 +0000
Revision:: 0:406ffaf4d93c

Who changed what in which revision?

User	Revision	Line number	New contents of line
tecnosys	0:406ffaf4d93c	1	/** IAP demo : demo code for internal Flash memory access library
tecnosys	0:406ffaf4d93c	2	*
tecnosys	0:406ffaf4d93c	3	* The internal Flash memory access is described in the LPC1768 usermanual.
tecnosys	0:406ffaf4d93c	4	* http://www.nxp.com/documents/user_manual/UM10360.pdf
tecnosys	0:406ffaf4d93c	5	*
tecnosys	0:406ffaf4d93c	6	* Chapter 2: "LPC17xx Memory map"
tecnosys	0:406ffaf4d93c	7	* Chapter 32: "LPC17xx Flash memory interface and programming"
tecnosys	0:406ffaf4d93c	8	* refering Rev. 01 - 4 January 2010
tecnosys	0:406ffaf4d93c	9	*
tecnosys	0:406ffaf4d93c	10	* This main.cpp demonstrates how the flash can be erased and wrote.
tecnosys	0:406ffaf4d93c	11	*
tecnosys	0:406ffaf4d93c	12	* This program tries to...
tecnosys	0:406ffaf4d93c	13	* 0. read device ID and serial#
tecnosys	0:406ffaf4d93c	14	* 1. check if the targat sector blank
tecnosys	0:406ffaf4d93c	15	* 2. erase the sector if it was not blank
tecnosys	0:406ffaf4d93c	16	* 3. write into the flash (prepare before write)
tecnosys	0:406ffaf4d93c	17	* 4. verify the data by IAP command
tecnosys	0:406ffaf4d93c	18	* 5. show the content of the flash
tecnosys	0:406ffaf4d93c	19	*
tecnosys	0:406ffaf4d93c	20	* The Flash must be erased as sectors. No overwrite can be done like SRAM.
tecnosys	0:406ffaf4d93c	21	* So erase should be done in size of 4K or 32K.
tecnosys	0:406ffaf4d93c	22	*
tecnosys	0:406ffaf4d93c	23	* Writing sector can be done with size of 256, 512, 1024 or 4096.
tecnosys	0:406ffaf4d93c	24	* If other size is used, the IAP returns an error.
tecnosys	0:406ffaf4d93c	25	* The SRAM memory should be allocated in
tecnosys	0:406ffaf4d93c	26	*
tecnosys	0:406ffaf4d93c	27	*
tecnosys	0:406ffaf4d93c	28	* Released under the MIT License: http://mbed.org/license/mit
tecnosys	0:406ffaf4d93c	29	*
tecnosys	0:406ffaf4d93c	30	* revision 1.0 09-Mar-2010 1st release
tecnosys	0:406ffaf4d93c	31	* revision 1.1 12-Mar-2010 chaged: to make possible to reserve flash area for user
tecnosys	0:406ffaf4d93c	32	* it can be set by USER_FLASH_AREA_START and USER_FLASH_AREA_SIZE in IAP.h
tecnosys	0:406ffaf4d93c	33	*/
tecnosys	0:406ffaf4d93c	34
tecnosys	0:406ffaf4d93c	35	#include "mbed.h"
tecnosys	0:406ffaf4d93c	36	#include "IAP.h"
tecnosys	0:406ffaf4d93c	37
tecnosys	0:406ffaf4d93c	38	#define MEM_SIZE 256
tecnosys	0:406ffaf4d93c	39	#define TARGET_SECTOR 26
tecnosys	0:406ffaf4d93c	40
tecnosys	0:406ffaf4d93c	41	void memdump( char *p, int n );
tecnosys	0:406ffaf4d93c	42	int isprint( int c );
tecnosys	0:406ffaf4d93c	43
tecnosys	0:406ffaf4d93c	44	IAP iap;
tecnosys	0:406ffaf4d93c	45
tecnosys	0:406ffaf4d93c	46
tecnosys	0:406ffaf4d93c	47	int main() {
tecnosys	0:406ffaf4d93c	48	char mem[ MEM_SIZE ]; // memory, it should be aligned to word boundary
tecnosys	0:406ffaf4d93c	49	int r;
tecnosys	0:406ffaf4d93c	50
tecnosys	0:406ffaf4d93c	51	printf( "IAP: Flash memory writing test\n" );
tecnosys	0:406ffaf4d93c	52	printf( " device-ID = 0x%08X, serial# = 0x%08X, CPU running %dkHz\n", iap.read_ID(), iap.read_serial(), SystemCoreClock / 1000 );
tecnosys	0:406ffaf4d93c	53	printf( " user reserved flash area: start_address=0x%08X, size=%d bytes\n", iap.reserved_flash_area_start(), iap.reserved_flash_area_size() );
tecnosys	0:406ffaf4d93c	54
tecnosys	0:406ffaf4d93c	55	for ( int i = 0; i < MEM_SIZE; i++ )
tecnosys	0:406ffaf4d93c	56	mem[ i ] = i & 0xFF;
tecnosys	0:406ffaf4d93c	57
tecnosys	0:406ffaf4d93c	58	// blank check: The mbed will erase all flash contents after downloading new executable
tecnosys	0:406ffaf4d93c	59
tecnosys	0:406ffaf4d93c	60	r = iap.blank_check( TARGET_SECTOR, TARGET_SECTOR );
tecnosys	0:406ffaf4d93c	61	printf( "blank check result = 0x%08X\n", r );
tecnosys	0:406ffaf4d93c	62
tecnosys	0:406ffaf4d93c	63	// erase sector, if required
tecnosys	0:406ffaf4d93c	64
tecnosys	0:406ffaf4d93c	65	// if ( r == SECTOR_NOT_BLANK ) {
tecnosys	0:406ffaf4d93c	66	iap.prepare( TARGET_SECTOR, TARGET_SECTOR );
tecnosys	0:406ffaf4d93c	67	r = iap.erase( TARGET_SECTOR, TARGET_SECTOR );
tecnosys	0:406ffaf4d93c	68	printf( "erase result = 0x%08X\n", r );
tecnosys	0:406ffaf4d93c	69	//}
tecnosys	0:406ffaf4d93c	70
tecnosys	0:406ffaf4d93c	71	// copy RAM to Flash
tecnosys	0:406ffaf4d93c	72
tecnosys	0:406ffaf4d93c	73	iap.prepare( TARGET_SECTOR, TARGET_SECTOR );
tecnosys	0:406ffaf4d93c	74	r = iap.write( mem, sector_start_adress[ TARGET_SECTOR ], MEM_SIZE );
tecnosys	0:406ffaf4d93c	75	printf( "copied: SRAM(0x%08X)->Flash(0x%08X) for %d bytes. (result=0x%08X)\n", mem, sector_start_adress[ TARGET_SECTOR ], MEM_SIZE, r );
tecnosys	0:406ffaf4d93c	76
tecnosys	0:406ffaf4d93c	77	// compare
tecnosys	0:406ffaf4d93c	78
tecnosys	0:406ffaf4d93c	79	r = iap.compare( mem, sector_start_adress[ TARGET_SECTOR ], MEM_SIZE );
tecnosys	0:406ffaf4d93c	80	printf( "compare result = \"%s\"\n", r ? "FAILED" : "OK" );
tecnosys	0:406ffaf4d93c	81
tecnosys	0:406ffaf4d93c	82	//#define WRITE_NEXT_BLOCK
tecnosys	0:406ffaf4d93c	83	#ifdef WRITE_NEXT_BLOCK
tecnosys	0:406ffaf4d93c	84
tecnosys	0:406ffaf4d93c	85	// copy RAM to Flash
tecnosys	0:406ffaf4d93c	86
tecnosys	0:406ffaf4d93c	87	iap.prepare( TARGET_SECTOR, TARGET_SECTOR );
tecnosys	0:406ffaf4d93c	88	r = iap.write( mem, sector_start_adress[ TARGET_SECTOR ] + 256, MEM_SIZE );
tecnosys	0:406ffaf4d93c	89	printf( "copied: SRAM(0x%08X)->Flash(0x%08X) for %d bytes. (result=0x%08X)\n", mem, sector_start_adress[ TARGET_SECTOR ], MEM_SIZE, r );
tecnosys	0:406ffaf4d93c	90
tecnosys	0:406ffaf4d93c	91	// compare
tecnosys	0:406ffaf4d93c	92
tecnosys	0:406ffaf4d93c	93	r = iap.compare( mem, sector_start_adress[ TARGET_SECTOR ] + 256, MEM_SIZE );
tecnosys	0:406ffaf4d93c	94	printf( "compare result = \"%s\"\n", r ? "FAILED" : "OK" );
tecnosys	0:406ffaf4d93c	95
tecnosys	0:406ffaf4d93c	96	#endif
tecnosys	0:406ffaf4d93c	97
tecnosys	0:406ffaf4d93c	98	printf( "showing the flash contents...\n" );
tecnosys	0:406ffaf4d93c	99	memdump( sector_start_adress[ TARGET_SECTOR ], MEM_SIZE * 3 );
tecnosys	0:406ffaf4d93c	100	}
tecnosys	0:406ffaf4d93c	101
tecnosys	0:406ffaf4d93c	102
tecnosys	0:406ffaf4d93c	103	void memdump( char *base, int n ) {
tecnosys	0:406ffaf4d93c	104	unsigned int *p;
tecnosys	0:406ffaf4d93c	105
tecnosys	0:406ffaf4d93c	106	printf( " memdump from 0x%08X for %d bytes", (unsigned long)base, n );
tecnosys	0:406ffaf4d93c	107
tecnosys	0:406ffaf4d93c	108	p = (unsigned int *)((unsigned int)base & ~(unsigned int)0x3);
tecnosys	0:406ffaf4d93c	109
tecnosys	0:406ffaf4d93c	110	for ( int i = 0; i < (n >> 2); i++, p++ ) {
tecnosys	0:406ffaf4d93c	111	if ( !(i % 4) )
tecnosys	0:406ffaf4d93c	112	printf( "\n 0x%08X :", (unsigned int)p );
tecnosys	0:406ffaf4d93c	113
tecnosys	0:406ffaf4d93c	114	printf( " 0x%08X", *p );
tecnosys	0:406ffaf4d93c	115	}
tecnosys	0:406ffaf4d93c	116
tecnosys	0:406ffaf4d93c	117	printf( "\n" );
tecnosys	0:406ffaf4d93c	118	}

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	11 Jul 2011
Imports:	37
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	2

main.cpp@0:406ffaf4d93c, 2011-07-11 (annotated)

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