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Diff: IAP.cpp
- Revision:
- 130:1421dda4d7e7
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/IAP.cpp Tue Apr 12 13:50:34 2016 +0000 @@ -0,0 +1,194 @@ + + +#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, +#if defined(TARGET_LPC11UXX) + IAPCommand_EEPROM_Write = 61, + IAPCommand_EEPROM_Read, +#elif defined(TARGET_LPC81X) || defined(TARGET_LPC82X) + IAPCommand_Erase_page = 59, +#endif +}; + +int IAP::reinvoke_isp( void ) { + __disable_irq(); + + IAP_command[ 0 ] = IAPCommand_Reinvoke_ISP; + + iap_entry( IAP_command, IAP_result ); + + return ( (int)IAP_result[ 0 ] ); +} + +/** 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) +} + +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) +} + +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 ] ); +} + +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 ] ); +} + +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 ] ); +} + +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 ] ); +} + +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 ] ); +} + +int IAP::read_BootVer(void) +{ + IAP_command[0] = IAPCommand_Read_Boot_Code_version; + IAP_result[1] = 0; // not sure if in high or low bits. + iap_entry(IAP_command, IAP_result); + return ((int)IAP_result[1]); +} + +char * IAP::reserved_flash_area_start( void ) +{ + return ( (char *)USER_FLASH_AREA_START ); +} + +int IAP::reserved_flash_area_size( void ) +{ + return ( USER_FLASH_AREA_SIZE ); +} + +#if defined(TARGET_LPC11UXX) + +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 ] ); +} + +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 ] ); +} + +#elif defined(TARGET_LPC81X) || defined(TARGET_LPC82X) + +int IAP::erase_page( int start, int end ) +{ + IAP_command[ 0 ] = IAPCommand_Erase_page; + 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 ] ); +} + +#endif \ No newline at end of file