Ika Shouyu Poppoyaki - LPC82x supported
Fork of ika_shouyu_poppoyaki by
main.cpp
- Committer:
- okano
- Date:
- 2013-08-24
- Revision:
- 2:8d75eb0ecd20
- Parent:
- 1:54e619428ae6
- Child:
- 3:3c380e643e74
File content as of revision 2:8d75eb0ecd20:
#include "mbed.h" BusOut leds( LED4, LED3, LED2, LED1 ); DigitalOut reset_pin( p26 ); DigitalOut isp_pin( p25 ); Serial target ( p28, p27 ); LocalFileSystem local( "local" ); #define SOURCE_FILE "/local/bin" #define STR_BUFF_SIZE 64 #define RAM_START_ADDRESS 0x10000300L #define SECTOR_SIZE 4096 enum { ENTER_TO_ISP_MODE, NO_ISP_MODE }; void put_string( char *s ); void get_string( char *s ); void print_command( char *command ) { char s[ STR_BUFF_SIZE ]; char *pos; strcpy( s, command ); if ( pos = strchr( s, '\r' ) ) *pos = '\0'; if ( pos = strchr( s, '\n' ) ) *pos = '\0'; printf( " command-\"%s\" : ", s ); } void print_result( int r ) { printf( "%s\r\n", r ? "Fail" : "Pass" ); } int try_and_check( char *command, char *expected_return_str, int mode ) { char rtn_str[ STR_BUFF_SIZE ]; int result; print_command( command ); put_string( command ); get_string( rtn_str ); print_result( result = strcmp( expected_return_str, rtn_str ) ); return ( result ); } int try_and_check2( char *command, char *expected_return_str, int mode ) { char rtn_str[ STR_BUFF_SIZE ]; int result; print_command( command ); put_string( command ); get_string( rtn_str ); // just readout echoback get_string( rtn_str ); print_result( result = strcmp( expected_return_str, rtn_str ) ); return ( result ); } char read_byte( void ) { while ( !target.readable() ) ; return ( target.getc() ); } char uue_table[ 64 ]; void initialize_uue_table( void ) { int i; uue_table[0] = 0x60; // 0x20 is translated to 0x60 ! for (i = 1; i < 64; i++) { uue_table[i] = (char)(0x20 + i); } } long bin2uue( char *bin, char *str ) { unsigned long v; long checksum = 0; int strpos = 0; *(str + strpos++) = ' ' + 45; for ( int i = 0; i < 45; i += 3 ) { checksum += *(bin + i + 0) + *(bin + i + 1) + *(bin + i + 2); v = (*(bin + i + 0) << 16) | (*(bin + i + 1) << 8) | (*(bin + i + 2) << 0); *(str + strpos++) = uue_table[ (v >> 18) & 0x3F ]; *(str + strpos++) = uue_table[ (v >> 12) & 0x3F ]; *(str + strpos++) = uue_table[ (v >> 6) & 0x3F ]; *(str + strpos++) = uue_table[ (v >> 0) & 0x3F ]; } *(str + strpos++) = '\n'; *(str + strpos++) = '\0'; return checksum; } 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" ); } void erase_sectors( int last_sector ) { char command_str[ STR_BUFF_SIZE ]; sprintf( command_str, "P 0 %d\r\n", last_sector ); try_and_check( command_str, "0", 0 ); *(command_str) = 'E'; try_and_check( command_str, "0", 0 ); } #define FLASH_WRITING_SIZE 1024 #define TRANSFER_SIZE (24 * 45) char b[ TRANSFER_SIZE ]; void write_binary_data( FILE *fp ) { char command_str[ STR_BUFF_SIZE ]; long checksum = 0; int transfer_count = 0; int size; initialize_uue_table(); for ( int i = FLASH_WRITING_SIZE; i < TRANSFER_SIZE; i++ ) b[ i ] = 0; while ( size = fread( b, sizeof( char ), FLASH_WRITING_SIZE, fp ) ) { if ( !transfer_count ) { add_isp_checksum( b ); } sprintf( command_str, "W %ld %ld\r\n", RAM_START_ADDRESS, 1080 ); try_and_check( command_str, "0", 0 ); for ( int i = 0; i < 24; i++ ) { checksum += bin2uue( b + (i * 45), command_str ); printf( "%02d %s\r", i, command_str ); put_string( command_str ); if ( (i == 19) || (i == 23) ) { sprintf( command_str, "%ld\n", checksum ); printf( " %ld %s\r\n", checksum, command_str ); printf( "\"%s\" %s\r\n", command_str, try_and_check( command_str, "OK", 0 ) ? "Fail" : "Pass" ); checksum = 0; } } printf( "\"P 0 0\" %s\r\n", try_and_check( "P 0 0\r\n", "0", 0 ) ? "Fail" : "Pass" ); sprintf( command_str, "C %ld %ld %ld\r\n", FLASH_WRITING_SIZE * transfer_count++, 0x10000300L, FLASH_WRITING_SIZE ); try_and_check( command_str, "0", 0 ); } try_and_check( "G 0 T\r\n", "0", 0 ); } int file_size( FILE *fp ) { int size; fseek( fp, 0, SEEK_END ); // seek to end of file size = ftell( fp ); // get current file pointer fseek( fp, 0, SEEK_SET ); // seek back to beginning of file return size; } void reset_target( int isp_pin_state ) { reset_pin = 1; isp_pin = 0; wait_ms( 100 ); reset_pin = 0; wait_ms( 100 ); reset_pin = 1; wait_ms( 100 ); } int main() { FILE *fp; char str_buf0[ STR_BUFF_SIZE ]; char str_buf1[ STR_BUFF_SIZE ]; int data_size; int last_sector; target.baud( 9600 ); if ( NULL == (fp = fopen( SOURCE_FILE, "rb" )) ) { error( "couldn't open source file" ); return ( 1 ); } data_size = file_size( fp ); last_sector = data_size / SECTOR_SIZE; printf( "\r\n\r\ntarget RESET\r\n" ); printf( "data size = %d bytes, it takes %d secotrs in flash area\r\n", data_size, last_sector + 1 ); reset_target( ENTER_TO_ISP_MODE ); try_and_check( "?", "Synchronized", 0 ); try_and_check2( "Synchronized\r\n", "OK", 0 ); try_and_check2( "12000\r\n", "OK", 0 ); try_and_check2( "U 23130\r\n", "0", 0 ); try_and_check2( "A 0\r\n", "0", 0 ); try_and_check( "K\r\n", "0", 0 ); get_string( str_buf0 ); get_string( str_buf1 ); printf( " result of \"K\" = %s %s\r\n", str_buf0, str_buf1 ); try_and_check( "J\r\n", "0", 0 ); get_string( str_buf0 ); printf( " result of \"J\" = %s\r\n", str_buf0 ); erase_sectors( last_sector ); write_binary_data( fp ); fclose( fp ); int i = 0; while ( 1 ) { leds = 0x1 << (i++ & 0x3); wait( 0.1 ); } } void put_string( char *s ) { char c; static int i = 0; while ( (c = *s++) ) { target.putc( c ); leds = i++ & 0x1; } } void get_string( char *s ) { int i = 0; char c = 0; do { do { if ( target.readable() ) { c = target.getc(); if ( ( c == '\n') || (c == '\r') ) break; *s++ = c; i++; } } while ( 1 ); } while ( !i ); *s = '\0'; }