Tedd OKANO / Mbed 2 deprecated IAP_internal_flash_write

Sample code for how to erase/write LPC1768, LPC11U24, LPC1114, LPC812 and LPC824 internal flash memory. This program uses IAP call of MCU's ROM routines. The IAP library also supports read/write of EEPROM in LPC11U24.

Dependencies:   mbed IAP

Sample code for how to erase/write LPC1768, LPC11U24, LPC1114, LPC812 and LPC824 internal flash memory. This program uses IAP call of MCU's ROM routines.

No filesystem interface available. This program is just an interface to flash erasing and writing. User need manage where to store the data in the flash area.

This IAP library supports read/write of EEPROM in LPC11U24.

More information available in
http://mbed.org/users/okano/notebook/iap-in-application-programming-internal-flash-eras/

main.cpp@2:c22f0c87fee6, 2012-11-26 (annotated)

Committer:
okano
Date:
Mon Nov 26 06:03:39 2012 +0000
Revision:
2:c22f0c87fee6
Parent:
1:a85b51eeb446
Child:
3:63a0993315e5
sample code for IAP class library for LPC1768 and LPC11U24. EEPROM access sample added

Who changed what in which revision?

UserRevisionLine numberNew contents of line
okano 0:b802bd2f4cc9 1 /** IAP demo : demo code for internal Flash memory access library
okano 0:b802bd2f4cc9 2 *
okano 1:a85b51eeb446 3 * The internal Flash memory access is described in the LPC1768 and LPC11U24 usermanual.
okano 0:b802bd2f4cc9 4 * http://www.nxp.com/documents/user_manual/UM10360.pdf
okano 1:a85b51eeb446 5 * http://www.nxp.com/documents/user_manual/UM10462.pdf
okano 0:b802bd2f4cc9 6 *
okano 1:a85b51eeb446 7 * LPC1768 --
okano 1:a85b51eeb446 8 * Chapter 2: "LPC17xx Memory map"
okano 1:a85b51eeb446 9 * Chapter 32: "LPC17xx Flash memory interface and programming"
okano 1:a85b51eeb446 10 * refering Rev. 01 - 4 January 2010
okano 1:a85b51eeb446 11 *
okano 1:a85b51eeb446 12 * LPC11U24 --
okano 1:a85b51eeb446 13 * Chapter 2: "LPC11Uxx Memory mapping"
okano 1:a85b51eeb446 14 * Chapter 20: "LPC11Uxx Flash programming firmware"
okano 1:a85b51eeb446 15 * refering Rev. 03 - 16 July 2012
okano 1:a85b51eeb446 16 *
okano 0:b802bd2f4cc9 17 * This main.cpp demonstrates how the flash can be erased and wrote.
okano 0:b802bd2f4cc9 18 *
okano 0:b802bd2f4cc9 19 * This program tries to...
okano 0:b802bd2f4cc9 20 * 0. read device ID and serial#
okano 0:b802bd2f4cc9 21 * 1. check if the targat sector blank
okano 0:b802bd2f4cc9 22 * 2. erase the sector if it was not blank
okano 0:b802bd2f4cc9 23 * 3. write into the flash (prepare before write)
okano 0:b802bd2f4cc9 24 * 4. verify the data by IAP command
okano 0:b802bd2f4cc9 25 * 5. show the content of the flash
okano 0:b802bd2f4cc9 26 *
okano 0:b802bd2f4cc9 27 * The Flash must be erased as sectors. No overwrite can be done like SRAM.
okano 0:b802bd2f4cc9 28 * So erase should be done in size of 4K or 32K.
okano 0:b802bd2f4cc9 29 *
okano 0:b802bd2f4cc9 30 * Writing sector can be done with size of 256, 512, 1024 or 4096.
okano 0:b802bd2f4cc9 31 * If other size is used, the IAP returns an error.
okano 0:b802bd2f4cc9 32 * The SRAM memory should be allocated in
okano 0:b802bd2f4cc9 33 *
okano 0:b802bd2f4cc9 34 *
okano 1:a85b51eeb446 35 * Released under the MIT License: http://mbed.org/license/mit
okano 0:b802bd2f4cc9 36 *
okano 0:b802bd2f4cc9 37 * revision 1.0 09-Mar-2010 1st release
okano 0:b802bd2f4cc9 38 * revision 1.1 12-Mar-2010 chaged: to make possible to reserve flash area for user
okano 0:b802bd2f4cc9 39 * it can be set by USER_FLASH_AREA_START and USER_FLASH_AREA_SIZE in IAP.h
okano 1:a85b51eeb446 40 * revision 2.0 26-Nov.2012 LPC11U24 code added
okano 2:c22f0c87fee6 41 * revision 2.1 26-Nov-2012 EEPROM access code imported from Suga koubou san's (http://mbed.org/users/okini3939/) library
okano 2:c22f0c87fee6 42 * http://mbed.org/users/okini3939/code/M0_EEPROM_test/
okano 0:b802bd2f4cc9 43 */
okano 0:b802bd2f4cc9 44
okano 0:b802bd2f4cc9 45 #include "mbed.h"
okano 0:b802bd2f4cc9 46 #include "IAP.h"
okano 0:b802bd2f4cc9 47
okano 0:b802bd2f4cc9 48 #define MEM_SIZE 256
okano 1:a85b51eeb446 49
okano 1:a85b51eeb446 50 #if defined(TARGET_LPC1768)
okano 1:a85b51eeb446 51 #define TARGET_SECTOR 29 // use sector 29 as target sector if it is on LPC1768
okano 1:a85b51eeb446 52 #elif defined(TARGET_LPC11U24)
okano 1:a85b51eeb446 53 #define TARGET_SECTOR 7 // use sector 7 as target sector if it is on LPC11U24
okano 2:c22f0c87fee6 54 #define TARGET_EEPROM_ADDRESS 64
okano 1:a85b51eeb446 55 #endif
okano 0:b802bd2f4cc9 56
okano 0:b802bd2f4cc9 57 void memdump( char *p, int n );
okano 0:b802bd2f4cc9 58 int isprint( int c );
okano 0:b802bd2f4cc9 59
okano 0:b802bd2f4cc9 60 IAP iap;
okano 0:b802bd2f4cc9 61
okano 0:b802bd2f4cc9 62
okano 0:b802bd2f4cc9 63 int main() {
okano 0:b802bd2f4cc9 64 char mem[ MEM_SIZE ]; // memory, it should be aligned to word boundary
okano 0:b802bd2f4cc9 65 int r;
okano 0:b802bd2f4cc9 66
okano 1:a85b51eeb446 67 printf( "IAP: Flash memory writing test\r\n" );
okano 1:a85b51eeb446 68 printf( " device-ID = 0x%08X, serial# = 0x%08X, CPU running %dkHz\r\n", iap.read_ID(), iap.read_serial(), SystemCoreClock / 1000 );
okano 1:a85b51eeb446 69 printf( " user reserved flash area: start_address=0x%08X, size=%d bytes\r\n", iap.reserved_flash_area_start(), iap.reserved_flash_area_size() );
okano 1:a85b51eeb446 70 printf( " read_BootVer=0x%08X\r\r\n", iap.read_BootVer() );
okano 0:b802bd2f4cc9 71
okano 0:b802bd2f4cc9 72 for ( int i = 0; i < MEM_SIZE; i++ )
okano 0:b802bd2f4cc9 73 mem[ i ] = i & 0xFF;
okano 0:b802bd2f4cc9 74
okano 0:b802bd2f4cc9 75 // blank check: The mbed will erase all flash contents after downloading new executable
okano 0:b802bd2f4cc9 76
okano 0:b802bd2f4cc9 77 r = iap.blank_check( TARGET_SECTOR, TARGET_SECTOR );
okano 1:a85b51eeb446 78 printf( "blank check result = 0x%08X\r\n", r );
okano 0:b802bd2f4cc9 79
okano 0:b802bd2f4cc9 80 // erase sector, if required
okano 0:b802bd2f4cc9 81
okano 0:b802bd2f4cc9 82 if ( r == SECTOR_NOT_BLANK ) {
okano 0:b802bd2f4cc9 83 iap.prepare( TARGET_SECTOR, TARGET_SECTOR );
okano 0:b802bd2f4cc9 84 r = iap.erase( TARGET_SECTOR, TARGET_SECTOR );
okano 1:a85b51eeb446 85 printf( "erase result = 0x%08X\r\n", r );
okano 0:b802bd2f4cc9 86 }
okano 0:b802bd2f4cc9 87
okano 0:b802bd2f4cc9 88 // copy RAM to Flash
okano 0:b802bd2f4cc9 89
okano 0:b802bd2f4cc9 90 iap.prepare( TARGET_SECTOR, TARGET_SECTOR );
okano 0:b802bd2f4cc9 91 r = iap.write( mem, sector_start_adress[ TARGET_SECTOR ], MEM_SIZE );
okano 1:a85b51eeb446 92 printf( "copied: SRAM(0x%08X)->Flash(0x%08X) for %d bytes. (result=0x%08X)\r\n", mem, sector_start_adress[ TARGET_SECTOR ], MEM_SIZE, r );
okano 0:b802bd2f4cc9 93
okano 0:b802bd2f4cc9 94 // compare
okano 0:b802bd2f4cc9 95
okano 0:b802bd2f4cc9 96 r = iap.compare( mem, sector_start_adress[ TARGET_SECTOR ], MEM_SIZE );
okano 1:a85b51eeb446 97 printf( "compare result = \"%s\"\r\n", r ? "FAILED" : "OK" );
okano 0:b802bd2f4cc9 98
okano 0:b802bd2f4cc9 99 //#define WRITE_NEXT_BLOCK
okano 0:b802bd2f4cc9 100 #ifdef WRITE_NEXT_BLOCK
okano 0:b802bd2f4cc9 101
okano 0:b802bd2f4cc9 102 // copy RAM to Flash
okano 0:b802bd2f4cc9 103
okano 0:b802bd2f4cc9 104 iap.prepare( TARGET_SECTOR, TARGET_SECTOR );
okano 0:b802bd2f4cc9 105 r = iap.write( mem, sector_start_adress[ TARGET_SECTOR ] + 256, MEM_SIZE );
okano 1:a85b51eeb446 106 printf( "copied: SRAM(0x%08X)->Flash(0x%08X) for %d bytes. (result=0x%08X)\r\n", mem, sector_start_adress[ TARGET_SECTOR ], MEM_SIZE, r );
okano 0:b802bd2f4cc9 107
okano 0:b802bd2f4cc9 108 // compare
okano 0:b802bd2f4cc9 109
okano 0:b802bd2f4cc9 110 r = iap.compare( mem, sector_start_adress[ TARGET_SECTOR ] + 256, MEM_SIZE );
okano 1:a85b51eeb446 111 printf( "compare result = \"%s\"\r\n", r ? "FAILED" : "OK" );
okano 0:b802bd2f4cc9 112
okano 0:b802bd2f4cc9 113 #endif
okano 0:b802bd2f4cc9 114
okano 1:a85b51eeb446 115 printf( "showing the flash contents...\r\n" );
okano 0:b802bd2f4cc9 116 memdump( sector_start_adress[ TARGET_SECTOR ], MEM_SIZE * 3 );
okano 2:c22f0c87fee6 117
okano 2:c22f0c87fee6 118 #if defined(TARGET_LPC11U24) // SAMPLE OF EEPROM ACCESS (LPC11U24 only)
okano 2:c22f0c87fee6 119 printf( "IAP: EEPROM writing test\r\n" );
okano 2:c22f0c87fee6 120 char mem2[ MEM_SIZE ];
okano 2:c22f0c87fee6 121
okano 2:c22f0c87fee6 122 r = iap.write_eeprom( mem, (char*)TARGET_EEPROM_ADDRESS, MEM_SIZE );
okano 2:c22f0c87fee6 123 printf( "copied: SRAM(0x%08X)->EEPROM(0x%08X) for %d bytes. (result=0x%08X)\r\n", mem, TARGET_EEPROM_ADDRESS, MEM_SIZE, r );
okano 2:c22f0c87fee6 124
okano 2:c22f0c87fee6 125 r = iap.read_eeprom( (char*)TARGET_EEPROM_ADDRESS, mem2, MEM_SIZE );
okano 2:c22f0c87fee6 126 printf( "copied: EEPROM(0x%08X)->SRAM(0x%08X) for %d bytes. (result=0x%08X)\r\n", TARGET_EEPROM_ADDRESS, mem, MEM_SIZE, r );
okano 2:c22f0c87fee6 127
okano 2:c22f0c87fee6 128 // compare
okano 2:c22f0c87fee6 129 r = memcmp(mem, mem2, MEM_SIZE);
okano 2:c22f0c87fee6 130 printf( "compare result = \"%s\"\r\n", r ? "FAILED" : "OK" );
okano 2:c22f0c87fee6 131
okano 2:c22f0c87fee6 132 printf( "showing the EEPROM contents...\r\n" );
okano 2:c22f0c87fee6 133 memdump( mem2, MEM_SIZE );
okano 2:c22f0c87fee6 134 #endif
okano 2:c22f0c87fee6 135
okano 0:b802bd2f4cc9 136 }
okano 0:b802bd2f4cc9 137
okano 0:b802bd2f4cc9 138
okano 0:b802bd2f4cc9 139 void memdump( char *base, int n ) {
okano 0:b802bd2f4cc9 140 unsigned int *p;
okano 0:b802bd2f4cc9 141
okano 0:b802bd2f4cc9 142 printf( " memdump from 0x%08X for %d bytes", (unsigned long)base, n );
okano 0:b802bd2f4cc9 143
okano 0:b802bd2f4cc9 144 p = (unsigned int *)((unsigned int)base & ~(unsigned int)0x3);
okano 0:b802bd2f4cc9 145
okano 0:b802bd2f4cc9 146 for ( int i = 0; i < (n >> 2); i++, p++ ) {
okano 0:b802bd2f4cc9 147 if ( !(i % 4) )
okano 1:a85b51eeb446 148 printf( "\r\n 0x%08X :", (unsigned int)p );
okano 0:b802bd2f4cc9 149
okano 0:b802bd2f4cc9 150 printf( " 0x%08X", *p );
okano 0:b802bd2f4cc9 151 }
okano 0:b802bd2f4cc9 152
okano 1:a85b51eeb446 153 printf( "\r\n" );
okano 0:b802bd2f4cc9 154 }