Tedd OKANO / Mbed 2 deprecated IAP_internal_flash_write_LPC812_sector_size_write

LPC812 sector size flash write sample code

Dependencies:   IAP mbed

Fork of IAP_internal_flash_write by Tedd OKANO

main.cpp@3:63a0993315e5, 2015-01-09 (annotated)

Committer:
okano
Date:
Fri Jan 09 06:37:02 2015 +0000
Revision:
3:63a0993315e5
Parent:
2:c22f0c87fee6
Child:
4:5705a494169a
ver3 : LPC812, LPC824 support

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 3:63a0993315e5 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 3:63a0993315e5 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 3:63a0993315e5 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 3:63a0993315e5 27 * The Flash must be erased as sectors. No overwrite can be done like SRAM.
okano 3:63a0993315e5 28 * So erase should be done in size of 4K or 32K.
okano 0:b802bd2f4cc9 29 *
okano 3:63a0993315e5 30 * Writing sector can be done with size of 256, 512, 1024 or 4096.
okano 3:63a0993315e5 31 * If other size is used, the IAP returns an error.
okano 3:63a0993315e5 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 3:63a0993315e5 43 * revision 3.0 09-Jan-2014 LPC812 and LPC824 support added
okano 0:b802bd2f4cc9 44 */
okano 0:b802bd2f4cc9 45
okano 0:b802bd2f4cc9 46 #include "mbed.h"
okano 0:b802bd2f4cc9 47 #include "IAP.h"
okano 0:b802bd2f4cc9 48
okano 0:b802bd2f4cc9 49 #define MEM_SIZE 256
okano 1:a85b51eeb446 50
okano 1:a85b51eeb446 51 #if defined(TARGET_LPC1768)
okano 1:a85b51eeb446 52 #define TARGET_SECTOR 29 // use sector 29 as target sector if it is on LPC1768
okano 1:a85b51eeb446 53 #elif defined(TARGET_LPC11U24)
okano 1:a85b51eeb446 54 #define TARGET_SECTOR 7 // use sector 7 as target sector if it is on LPC11U24
okano 2:c22f0c87fee6 55 #define TARGET_EEPROM_ADDRESS 64
okano 3:63a0993315e5 56 #define TARGET_EEPROM_ADDRESS 64
okano 3:63a0993315e5 57 #elif defined(TARGET_LPC812) || defined(TARGET_LPC824)
okano 3:63a0993315e5 58 #define TARGET_SECTOR 15 // use sector 15 as target sector if it is on LPC812
okano 1:a85b51eeb446 59 #endif
okano 0:b802bd2f4cc9 60
okano 0:b802bd2f4cc9 61 void memdump( char *p, int n );
okano 0:b802bd2f4cc9 62 int isprint( int c );
okano 0:b802bd2f4cc9 63
okano 0:b802bd2f4cc9 64 IAP iap;
okano 0:b802bd2f4cc9 65
okano 0:b802bd2f4cc9 66
okano 3:63a0993315e5 67 int main()
okano 3:63a0993315e5 68 {
okano 0:b802bd2f4cc9 69 char mem[ MEM_SIZE ]; // memory, it should be aligned to word boundary
okano 0:b802bd2f4cc9 70 int r;
okano 0:b802bd2f4cc9 71
okano 3:63a0993315e5 72 printf( "\r\n\r\n=== IAP: Flash memory writing test ===\r\n" );
okano 1:a85b51eeb446 73 printf( " device-ID = 0x%08X, serial# = 0x%08X, CPU running %dkHz\r\n", iap.read_ID(), iap.read_serial(), SystemCoreClock / 1000 );
okano 1:a85b51eeb446 74 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 75 printf( " read_BootVer=0x%08X\r\r\n", iap.read_BootVer() );
okano 0:b802bd2f4cc9 76
okano 0:b802bd2f4cc9 77 for ( int i = 0; i < MEM_SIZE; i++ )
okano 0:b802bd2f4cc9 78 mem[ i ] = i & 0xFF;
okano 0:b802bd2f4cc9 79
okano 0:b802bd2f4cc9 80 // blank check: The mbed will erase all flash contents after downloading new executable
okano 0:b802bd2f4cc9 81
okano 0:b802bd2f4cc9 82 r = iap.blank_check( TARGET_SECTOR, TARGET_SECTOR );
okano 1:a85b51eeb446 83 printf( "blank check result = 0x%08X\r\n", r );
okano 0:b802bd2f4cc9 84
okano 0:b802bd2f4cc9 85 // erase sector, if required
okano 3:63a0993315e5 86
okano 0:b802bd2f4cc9 87 if ( r == SECTOR_NOT_BLANK ) {
okano 0:b802bd2f4cc9 88 iap.prepare( TARGET_SECTOR, TARGET_SECTOR );
okano 0:b802bd2f4cc9 89 r = iap.erase( TARGET_SECTOR, TARGET_SECTOR );
okano 1:a85b51eeb446 90 printf( "erase result = 0x%08X\r\n", r );
okano 0:b802bd2f4cc9 91 }
okano 3:63a0993315e5 92
okano 0:b802bd2f4cc9 93 // copy RAM to Flash
okano 0:b802bd2f4cc9 94
okano 0:b802bd2f4cc9 95 iap.prepare( TARGET_SECTOR, TARGET_SECTOR );
okano 0:b802bd2f4cc9 96 r = iap.write( mem, sector_start_adress[ TARGET_SECTOR ], MEM_SIZE );
okano 1:a85b51eeb446 97 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 98
okano 0:b802bd2f4cc9 99 // compare
okano 0:b802bd2f4cc9 100
okano 0:b802bd2f4cc9 101 r = iap.compare( mem, sector_start_adress[ TARGET_SECTOR ], MEM_SIZE );
okano 1:a85b51eeb446 102 printf( "compare result = \"%s\"\r\n", r ? "FAILED" : "OK" );
okano 0:b802bd2f4cc9 103
okano 0:b802bd2f4cc9 104 //#define WRITE_NEXT_BLOCK
okano 0:b802bd2f4cc9 105 #ifdef WRITE_NEXT_BLOCK
okano 0:b802bd2f4cc9 106
okano 0:b802bd2f4cc9 107 // copy RAM to Flash
okano 0:b802bd2f4cc9 108
okano 0:b802bd2f4cc9 109 iap.prepare( TARGET_SECTOR, TARGET_SECTOR );
okano 0:b802bd2f4cc9 110 r = iap.write( mem, sector_start_adress[ TARGET_SECTOR ] + 256, MEM_SIZE );
okano 1:a85b51eeb446 111 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 112
okano 0:b802bd2f4cc9 113 // compare
okano 0:b802bd2f4cc9 114
okano 0:b802bd2f4cc9 115 r = iap.compare( mem, sector_start_adress[ TARGET_SECTOR ] + 256, MEM_SIZE );
okano 1:a85b51eeb446 116 printf( "compare result = \"%s\"\r\n", r ? "FAILED" : "OK" );
okano 0:b802bd2f4cc9 117
okano 0:b802bd2f4cc9 118 #endif
okano 0:b802bd2f4cc9 119
okano 1:a85b51eeb446 120 printf( "showing the flash contents...\r\n" );
okano 0:b802bd2f4cc9 121 memdump( sector_start_adress[ TARGET_SECTOR ], MEM_SIZE * 3 );
okano 3:63a0993315e5 122
okano 3:63a0993315e5 123
okano 3:63a0993315e5 124 #if defined(TARGET_LPC812) || defined(TARGET_LPC824)
okano 3:63a0993315e5 125 iap.prepare( TARGET_SECTOR, TARGET_SECTOR );
okano 3:63a0993315e5 126 r = iap.erase_page( 241, 241 ); // 241 is page number for sector 7 with 64 byte offset
okano 3:63a0993315e5 127
okano 3:63a0993315e5 128 printf( "\r\nerase page test\r\n" );
okano 3:63a0993315e5 129 printf( "erase page result = \"%s\"\r\n", r ? "FAILED" : "OK" );
okano 3:63a0993315e5 130 printf( "showing memory dump to confirm 0x00003C40 to 0x00003C7F are erased (should be changed to 0xFF)" );
okano 3:63a0993315e5 131
okano 3:63a0993315e5 132 memdump( sector_start_adress[ TARGET_SECTOR ], MEM_SIZE );
okano 3:63a0993315e5 133 #endif
okano 3:63a0993315e5 134
okano 3:63a0993315e5 135
okano 2:c22f0c87fee6 136 #if defined(TARGET_LPC11U24) // SAMPLE OF EEPROM ACCESS (LPC11U24 only)
okano 2:c22f0c87fee6 137 printf( "IAP: EEPROM writing test\r\n" );
okano 2:c22f0c87fee6 138 char mem2[ MEM_SIZE ];
okano 2:c22f0c87fee6 139
okano 2:c22f0c87fee6 140 r = iap.write_eeprom( mem, (char*)TARGET_EEPROM_ADDRESS, MEM_SIZE );
okano 2:c22f0c87fee6 141 printf( "copied: SRAM(0x%08X)->EEPROM(0x%08X) for %d bytes. (result=0x%08X)\r\n", mem, TARGET_EEPROM_ADDRESS, MEM_SIZE, r );
okano 3:63a0993315e5 142
okano 2:c22f0c87fee6 143 r = iap.read_eeprom( (char*)TARGET_EEPROM_ADDRESS, mem2, MEM_SIZE );
okano 2:c22f0c87fee6 144 printf( "copied: EEPROM(0x%08X)->SRAM(0x%08X) for %d bytes. (result=0x%08X)\r\n", TARGET_EEPROM_ADDRESS, mem, MEM_SIZE, r );
okano 3:63a0993315e5 145
okano 2:c22f0c87fee6 146 // compare
okano 2:c22f0c87fee6 147 r = memcmp(mem, mem2, MEM_SIZE);
okano 2:c22f0c87fee6 148 printf( "compare result = \"%s\"\r\n", r ? "FAILED" : "OK" );
okano 3:63a0993315e5 149
okano 2:c22f0c87fee6 150 printf( "showing the EEPROM contents...\r\n" );
okano 2:c22f0c87fee6 151 memdump( mem2, MEM_SIZE );
okano 2:c22f0c87fee6 152 #endif
okano 2:c22f0c87fee6 153
okano 0:b802bd2f4cc9 154 }
okano 0:b802bd2f4cc9 155
okano 0:b802bd2f4cc9 156
okano 3:63a0993315e5 157 void memdump( char *base, int n )
okano 3:63a0993315e5 158 {
okano 0:b802bd2f4cc9 159 unsigned int *p;
okano 0:b802bd2f4cc9 160
okano 0:b802bd2f4cc9 161 printf( " memdump from 0x%08X for %d bytes", (unsigned long)base, n );
okano 0:b802bd2f4cc9 162
okano 0:b802bd2f4cc9 163 p = (unsigned int *)((unsigned int)base & ~(unsigned int)0x3);
okano 0:b802bd2f4cc9 164
okano 0:b802bd2f4cc9 165 for ( int i = 0; i < (n >> 2); i++, p++ ) {
okano 0:b802bd2f4cc9 166 if ( !(i % 4) )
okano 1:a85b51eeb446 167 printf( "\r\n 0x%08X :", (unsigned int)p );
okano 0:b802bd2f4cc9 168
okano 0:b802bd2f4cc9 169 printf( " 0x%08X", *p );
okano 0:b802bd2f4cc9 170 }
okano 0:b802bd2f4cc9 171
okano 1:a85b51eeb446 172 printf( "\r\n" );
okano 0:b802bd2f4cc9 173 }