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/*
* Copyright (c) 2004 Deva Seetharam deva@alum.mit.edu
* All rights reserved.
* Copyright (c) 1996 Tommaso Cucinotta, Alessandro Evangelista, Luigi Rizzo
* All rights reserved.
*
* Dip. di Ingegneria dell'Informazione, Universita of Pisa,
* via Diotisalvi 2 -- 56126 Pisa.
* email: simulpic@iet.unipi.it
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by
* Tommaso Cucinotta, Alessandro Evangelista and Luigi Rizzo
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* tfile.cc
*/
#include "tfile.h"
#include <stdio.h>
#include <string.h>
TByte TFile::Ascii_To_Num(char c)
{
if(c >= '0' && c <= '9') return ((TByte) c - '0');
if(c >= 'A' && c <= 'F') return ((TByte) c - ('A' - 10));
if(c >= 'a' && c <= 'f') return ((TByte) c - ('a' - 10));
return(0xFF);
}
TByte TFile::Hex_Byte(char* s)
{
return (Ascii_To_Num(s[0]) << 4) | Ascii_To_Num(s[1]);
}
TWord TFile::Hex_Word(char* s)
{
return (Hex_Byte(s) << 8) + Hex_Byte(s + 2);
}
/* Chiudere il file ... */
TError TFile::Load_File(TString filename, TWord* external_buffer, TBool& WDT_Fuse)
{
FILE* file_pointer;
char file_buffer[256];
char* fb = NULL;
TByte cnt, check;
TWord pc;
TByte Hi, Low;
for (int i=0; i < ALLMEM_SIZE; i++) external_buffer[i]=0;
if ((file_pointer = fopen(filename, "rb")) == NULL)
return CANNOT_OPEN_FILE;
do {
do {
if(fgets(file_buffer, sizeof(file_buffer)-1, file_pointer) == NULL) {
fclose(file_pointer);
return UNEXPECTED_EOF;
}
if(file_buffer[0] != ':')
continue;
if (strlen(file_buffer) < 10) {
fclose(file_pointer);
return UNEXPECTED_EOLN;
}
Low = Hex_Byte(&file_buffer[7]);
} while( Low!=0 && Low!=1);
if(Low==1) {
fclose(file_pointer);
return NO_ERROR; /* End of object file */
}
cnt = Hex_Byte(&file_buffer[1]);
pc = Hex_Word(&file_buffer[3]);
if((cnt & 1) != 0 || (pc & 1) != 0) {
fclose(file_pointer);
return ODD_LEN_ADDR;
}
check = cnt + (TByte) (pc >> 8) + (TByte) (pc & 0xFF);
cnt >>=1;
pc >>=1;
fb = &file_buffer[9];
do {
Low = Hex_Byte(fb);
check += Low;
fb += 2;
Hi = Hex_Byte(fb);
check += Hi;
fb += 2;
if(--cnt == 0)
{
if(((0x100 - (check & 0xff)) & 0xff) != Hex_Byte(fb))
{
fclose(file_pointer);
return CHECKSUM;
}
fb = NULL;
}
if (pc==0x2007)
WDT_Fuse=((Low >> 2) & 0x01);
else if (pc < ALLMEM_SIZE)
external_buffer[pc] = Low | ((Hi & 0x3F) << 8);
else
printf("--- Warning: mem[0x%04x]= %04x\n", pc, Low | ((Hi & 0x3F) << 8) );
pc++;
} while(fb != NULL);
} while(TRUE);
};
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