Add to 11U68 11E68
Dependencies: DirectoryList MODSERIAL mbed
Fork of ika_shouyu_poppoyaki by
writing.cpp
- Committer:
- okano
- Date:
- 2013-09-13
- Revision:
- 24:9830b4f1207b
- Parent:
- 22:bd98a782fba6
- Child:
- 26:a63e73885b21
File content as of revision 24:9830b4f1207b:
#include "mbed.h" #include "writing.h" #include "command_interface.h" #include "uu_coding.h" #include "serial_utilities.h" #include "ika.h" int write_uuencoded_data( FILE *fp, int ram_size, int sector_size, unsigned int ); int write_binary_data( FILE *fp, int ram_size, int sector_size, unsigned int ram_start ); int get_flash_writing_size( int ram_size, unsigned int ram_start ); int write_flash( FILE *fp, target_param *tpp ) { if ( tpp->write_type == BINARY ) write_binary_data( fp, tpp->ram_size, tpp->sector_size, tpp->ram_start_address ); else // UUENCODE write_uuencoded_data( fp, tpp->ram_size, tpp->sector_size, tpp->ram_start_address ); } int write_uuencoded_data( FILE *fp, int ram_size, int sector_size, unsigned int ram_start ) { #define BYTES_PER_LINE 45 char command_str[ STR_BUFF_SIZE ]; long checksum = 0; int total_size = 0; int size; int flash_writing_size; int lines_per_transfer; int transfer_size; char *b; initialize_uue_table(); flash_writing_size = get_flash_writing_size( ram_size, ram_start ); lines_per_transfer = ((flash_writing_size / BYTES_PER_LINE) + 1); transfer_size = (((flash_writing_size + 11) / 12) * 12); // char b[ transfer_size ]; // this can be done in mbed-compiler. but I should do it in common way if ( NULL == (b = (char *)malloc( transfer_size * sizeof( char ) )) ) error( "malloc error happened\r\n" ); for ( int i = flash_writing_size; i < transfer_size; i++ ) b[ i ] = 0; // this is not neccesary but just stuffing stuffing bytes while ( size = fread( b, sizeof( char ), flash_writing_size, fp ) ) { if ( !total_size ) { // overwriting 4 bytes data for address=0x1C // there is a slot for checksum that is checked in (target's) boot process add_isp_checksum( b ); } sprintf( command_str, "W %ld %ld\r\n", ram_start, transfer_size ); try_and_check( command_str, "0", 0 ); for ( int i = 0; i < lines_per_transfer; i++ ) { checksum += bin2uue( b + (i * BYTES_PER_LINE), command_str, i == (lines_per_transfer - 1) ? (transfer_size % BYTES_PER_LINE) : BYTES_PER_LINE ); // printf( " data -- %02d %s\r", i, command_str ); put_string( command_str ); if ( !((i + 1) % 20) ) { send_RAM_transfer_checksum( checksum ); checksum = 0; } } send_RAM_transfer_checksum( checksum ); checksum = 0; sprintf( command_str, "P %d %d\r\n", total_size / sector_size, total_size / sector_size ); try_and_check( command_str, "0", 0 ); sprintf( command_str, "C %d %d %d\r\n", total_size, ram_start, flash_writing_size ); try_and_check( command_str, "0", 0 ); total_size += size; } free( b ); return ( total_size ); } int write_binary_data( FILE *fp, int ram_size, int sector_size, unsigned int ram_start ) { char command_str[ STR_BUFF_SIZE ]; int total_size = 0; int size; int flash_writing_size; char *b; flash_writing_size = 256; if ( NULL == (b = (char *)malloc( flash_writing_size * sizeof( char ) )) ) error( "malloc error happened\r\n" ); printf( "\r\n ==== flash writing ====\r\n" ); while ( size = fread( b, sizeof( char ), flash_writing_size, fp ) ) { if ( !total_size ) { // overwriting 4 bytes data for address=0x1C // there is a slot for checksum that is checked in (target's) boot process add_isp_checksum( b ); } sprintf( command_str, "W %ld %ld\r\n", ram_start, flash_writing_size ); try_and_check( command_str, "0", 0 ); put_binary( b, flash_writing_size ); put_string( "\r\n" ); sprintf( command_str, "P %d %d\r\n", total_size / sector_size, total_size / sector_size ); try_and_check( command_str, "0", 0 ); sprintf( command_str, "C %d %d %d\r\n", total_size, ram_start, flash_writing_size ); try_and_check( command_str, "0", 0 ); total_size += size; //printf( " total %d bytes transferred\r", total_size ); } free( b ); return ( total_size ); } void add_isp_checksum( char *b ) { // see http://www.lpcware.com/content/nxpfile/lpc177x8x-checksum-insertion-program unsigned int *p; unsigned int cksum = 0; p = (unsigned int *)b; for ( int i = 0; i < 7; i++ ) { cksum += *p++; } printf( " -- value at checksum slot : 0x%08X\r\n", *p ); *p = 0xFFFFFFFF - cksum + 1; printf( " -- calculated checksum : 0x%08X\r\n", *p ); printf( " new checksum will be used to program flash\r\n" ); } int get_flash_writing_size( int ram_size, unsigned int ram_start ) { int flash_writing_size[] = { 4096, 1024, 512, 256 }; int available_size; int i; available_size = ram_size - (ram_start & 0xFFFF); for ( i = 0; i < sizeof( flash_writing_size ) / sizeof( int ); i++ ) { if ( flash_writing_size[ i ] < available_size ) break; } return ( flash_writing_size[ i ] ); }