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Aes encryption code
Dependencies: Crypto USBDevice mbed
Fork of larada by
IAP.cpp
- Committer:
- AamirNiaz
- Date:
- 2016-03-12
- Revision:
- 7:ed473cf0afaf
- Parent:
- 0:aaf22a04f350
File content as of revision 7:ed473cf0afaf:
/** IAP : internal Flash memory access library * * The internal Flash memory access is described in the LPC1768 usermanual. * http://www.nxp.com/documents/user_manual/UM10360.pdf * * Chapter 2: "LPC17xx Memory map" * Chapter 32: "LPC17xx Flash memory interface and programming" * refering Rev. 01 - 4 January 2010 * * Released under the MIT License: http://mbed.org/license/mit * * revision 1.0 09-Mar-2010 1st release * revision 1.1 12-Mar-2010 chaged: to make possible to reserve flash area for user * it can be set by USER_FLASH_AREA_START and USER_FLASH_AREA_SIZE in IAP.h * * by Tedd OKANO http://mbed.org/users/okano/notebook/iap-in-application-programming-internal-flash-eras/ * modified by Suga (supported to LPC11U24) */ #include "mbed.h" #include "IAP.h" #define USER_FLASH_AREA_START_STR( x ) STR( x ) #define STR( x ) #x unsigned char user_area[ USER_FLASH_AREA_SIZE ] __attribute__((section( ".ARM.__at_" USER_FLASH_AREA_START_STR( USER_FLASH_AREA_START ) ), zero_init)); /* * Reserve of flash area is explained by Igor. Please refer next URL * http://mbed.org/users/okano/notebook/iap-in-application-programming-internal-flash-eras/?page=1#comment-271 */ //unsigned char user_area[ size ] __attribute__((section(".ARM.__at_0x78000"), zero_init)); /* * IAP command codes * Table 589. "IAP Command Summary", Chapter 8. "IAP commands", usermanual */ enum command_code { IAPCommand_Prepare_sector_for_write_operation = 50, IAPCommand_Copy_RAM_to_Flash, IAPCommand_Erase_sector, IAPCommand_Blank_check_sector, IAPCommand_Read_part_ID, IAPCommand_Read_Boot_Code_version, IAPCommand_Compare, IAPCommand_Reinvoke_ISP, IAPCommand_Read_device_serial_number, IAPCommand_EEPROM_Write = 61, IAPCommand_EEPROM_Read, }; /** Read part identification number * * @return device ID * @see read_serial() */ int IAP::read_ID( void ) { IAP_command[ 0 ] = IAPCommand_Read_part_ID; iap_entry( IAP_command, IAP_result ); // return ( (int)IAP_result[ 0 ] ); return ( (int)IAP_result[ 1 ] ); // to return the number itself (this command always returns CMD_SUCCESS) } /** Read device serial number * * @return device serial number * @see read_ID() */ int IAP::read_serial( void ) { IAP_command[ 0 ] = IAPCommand_Read_device_serial_number; iap_entry( IAP_command, IAP_result ); // return ( (int)IAP_result[ 0 ] ); return ( (int)IAP_result[ 1 ] ); // to return the number itself (this command always returns CMD_SUCCESS) } /** Blank check sector(s) * * @param start a Start Sector Number * @param end an End Sector Number (should be greater than or equal to start sector number). * @return error code: CMD_SUCCESS | BUSY | SECTOR_NOT_BLANK | INVALID_SECTOR */ int IAP::blank_check( int start, int end ) { IAP_command[ 0 ] = IAPCommand_Blank_check_sector; IAP_command[ 1 ] = (unsigned int)start; // Start Sector Number IAP_command[ 2 ] = (unsigned int)end; // End Sector Number (should be greater than or equal to start sector number) iap_entry( IAP_command, IAP_result ); return ( (int)IAP_result[ 0 ] ); } /** Erase Sector(s) * * @param start a Start Sector Number * @param end an End Sector Number (should be greater than or equal to start sector number). * @return error code: CMD_SUCCESS | BUSY | SECTOR_NOT_PREPARED_FOR_WRITE_OPERATION | INVALID_SECTOR */ int IAP::erase( int start, int end ) { IAP_command[ 0 ] = IAPCommand_Erase_sector; IAP_command[ 1 ] = (unsigned int)start; // Start Sector Number IAP_command[ 2 ] = (unsigned int)end; // End Sector Number (should be greater than or equal to start sector number) IAP_command[ 3 ] = cclk_kHz; // CPU Clock Frequency (CCLK) in kHz iap_entry( IAP_command, IAP_result ); return ( (int)IAP_result[ 0 ] ); } /** Prepare sector(s) for write operation * * @param start a Start Sector Number * @param end an End Sector Number (should be greater than or equal to start sector number). * @return error code: CMD_SUCCESS | BUSY | INVALID_SECTOR */ int IAP::prepare( int start, int end ) { IAP_command[ 0 ] = IAPCommand_Prepare_sector_for_write_operation; IAP_command[ 1 ] = (unsigned int)start; // Start Sector Number IAP_command[ 2 ] = (unsigned int)end; // End Sector Number (should be greater than or equal to start sector number). iap_entry( IAP_command, IAP_result ); return ( (int)IAP_result[ 0 ] ); } /** Copy RAM to Flash * * @param source_addr Source RAM address from which data bytes are to be read. This address should be a word boundary. * @param target_addr Destination flash address where data bytes are to be written. This address should be a 256 byte boundary. * @param size Number of bytes to be written. Should be 256 | 512 | 1024 | 4096. * @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 */ int IAP::write( char *source_addr, char *target_addr, int size ) { IAP_command[ 0 ] = IAPCommand_Copy_RAM_to_Flash; 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. 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. IAP_command[ 3 ] = size; // Number of bytes to be written. Should be 256 | 512 | 1024 | 4096. IAP_command[ 4 ] = cclk_kHz; // CPU Clock Frequency (CCLK) in kHz. iap_entry( IAP_command, IAP_result ); return ( (int)IAP_result[ 0 ] ); } /** Compare <address1> <address2> <no of bytes> * * @param source_addr Starting flash or RAM address of data bytes to be compared. This address should be a word boundary. * @param target_addr Starting flash or RAM address of data bytes to be compared. This address should be a word boundary. * @param size Number of bytes to be compared; should be a multiple of 4. * @return error code: CMD_SUCCESS | COMPARE_ERROR | COUNT_ERROR (Byte count is not a multiple of 4) | ADDR_ERROR | ADDR_NOT_MAPPED */ int IAP::compare( char *source_addr, char *target_addr, int size ) { IAP_command[ 0 ] = IAPCommand_Compare; 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. 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. IAP_command[ 3 ] = size; // Number of bytes to be compared; should be a multiple of 4. iap_entry( IAP_command, IAP_result ); return ( (int)IAP_result[ 0 ] ); } /** Get user reserved flash start address * * @return start address of user reserved flash memory * @see reserved_flash_area_size() */ char * IAP::reserved_flash_area_start( void ) { return ( (char *)USER_FLASH_AREA_START ); } /** Get user reserved flash size * * @return size of user reserved flash memory * @see reserved_flash_area_start() */ int IAP::reserved_flash_area_size( void ) { return ( USER_FLASH_AREA_SIZE ); } #if defined(TARGET_LPC11U24) /** Copy RAM to EEPROM (LPC11U24) * * @param source_addr Source RAM address from which data bytes are to be read. * @param target_addr Destination EEPROM address where data bytes are to be written. * @param size Number of bytes to be written. * @return error code: CMD_SUCCESS | SRC_ADDR_NOT_MAPPED | DST_ADDR_NOT_MAPPED * Remark: The top 64 bytes of the EEPROM memory are reserved and cannot be written to. */ int IAP::write_eeprom( char *source_addr, char *target_addr, int size ) { IAP_command[ 0 ] = IAPCommand_EEPROM_Write; IAP_command[ 1 ] = (unsigned int)target_addr; // Destination EEPROM address where data bytes are to be written. This address should be a 256 byte boundary. 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. IAP_command[ 3 ] = size; // Number of bytes to be written. Should be 256 | 512 | 1024 | 4096. IAP_command[ 4 ] = cclk_kHz; // CPU Clock Frequency (CCLK) in kHz. iap_entry( IAP_command, IAP_result ); return ( (int)IAP_result[ 0 ] ); } /** Copy EEPROM to RAM (LPC11U24) * * @param source_addr Source EEPROM address from which data bytes are to be read. * @param target_addr Destination RAM address where data bytes are to be written. * @param size Number of bytes to be written. * @return error code: CMD_SUCCESS | SRC_ADDR_NOT_MAPPED | DST_ADDR_NOT_MAPPED * Remark: The top 64 bytes of the EEPROM memory are reserved and cannot be written to. */ int IAP::read_eeprom( char *source_addr, char *target_addr, int size ) { IAP_command[ 0 ] = IAPCommand_EEPROM_Read; IAP_command[ 1 ] = (unsigned int)source_addr; // Source EEPROM address from which data bytes are to be read. This address should be a word boundary. IAP_command[ 2 ] = (unsigned int)target_addr; // Destination RAM address where data bytes are to be written. This address should be a 256 byte boundary. IAP_command[ 3 ] = size; // Number of bytes to be written. Should be 256 | 512 | 1024 | 4096. IAP_command[ 4 ] = cclk_kHz; // CPU Clock Frequency (CCLK) in kHz. iap_entry( IAP_command, IAP_result ); return ( (int)IAP_result[ 0 ] ); } #endif