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/*
Copyright (C) 2000-2001 Jos Roberto B. de A. Monteiro <jrm@autsens.com>
and Pedro Zorzenon Neto <pzn@autsens.com>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#define DEVICES_CONFIG_FILE_NAME "/etc/avrprog/devices.conf"
#define STRSIZE 256
#include "devices.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
static FILE * config_file_handle=NULL;
static char config_file_line[STRSIZE];
static int get_parameter (int num, char *parameter);
static int read_config_line (char *chip_id, int *signatyre_bytes,
int *program_memory_size, int *eeprom_memory_size);
static int open_config_file ();
static int close_config_file ();
static int tell_valid_devices ();
int search_chip_by_signature(unsigned char *sigbytes, char *chip_id,
int *program_memory_size, int *eeprom_memory_size) {
int config_signature_bytes[4]={256,256,256,256};
int chip_found=0;
int i;
open_config_file();
/* search chip */
while (chip_found==0) {
i=read_config_line(chip_id, config_signature_bytes,
program_memory_size, eeprom_memory_size);
if (i==0) {
fprintf(stderr,"Error: config file misspelling. Please verify '%s'.\n",DEVICES_CONFIG_FILE_NAME);
abort();
}
if (i==-1) {
fprintf(stderr,"Error: no device matchs signature bytes in config file.\n");
tell_valid_devices();
abort();
}
chip_found=1;
for(i=0; i<4; i++) {
if ((config_signature_bytes[i] > -1) &&
(config_signature_bytes[i] != (unsigned int) sigbytes[i]))
chip_found=0;
}
}
/* if program_memory_size is -2, means error and show list of available devices */
if (*program_memory_size==-2) {
fprintf(stderr,"Error: %s\n", chip_id);
tell_valid_devices();
abort();
}
/* if program_memory_size is -1, means error */
if (*program_memory_size==-1) {
fprintf(stderr,"Error: %s\n", chip_id);
abort();
}
close_config_file();
return 1;
}
int search_chip_by_name(unsigned char *sigbytes, char *chip_id,
int *program_memory_size, int *eeprom_memory_size) {
int chip_found=0;
int config_signature_bytes[4]={256,256,256,256};
char selected_chip[STRSIZE];
int i;
strcpy(selected_chip,chip_id);
open_config_file();
/* search chip */
while (chip_found==0) {
i=read_config_line(chip_id, config_signature_bytes,
program_memory_size, eeprom_memory_size);
if (i==0) {
fprintf(stderr,"Error: config file misspelling. Please verify '%s'.\n",DEVICES_CONFIG_FILE_NAME);
abort();
}
if (i==-1) {
fprintf(stderr,"Error: no device matchs '%s' in config file.\n",selected_chip);
tell_valid_devices();
abort();
}
if (strcmp(selected_chip,chip_id)==0)
chip_found=1;
}
/* if program_memory_size is -2, means error and show list of available devices */
if (*program_memory_size==-2) {
fprintf(stderr,"Error: %s\n", chip_id);
tell_valid_devices();
abort();
}
/* if program_memory_size is -1, means error */
if (*program_memory_size==-1) {
fprintf(stderr,"Error: %s\n", chip_id);
abort();
}
fprintf(stderr,"Warning: chip autodetection not done due to '-d' option.\n");
close_config_file();
return 1;
}
static int open_config_file () {
if (config_file_handle!=NULL)
close_config_file();
config_file_handle=fopen(DEVICES_CONFIG_FILE_NAME,"r");
if (config_file_handle==NULL) {
printf("Error when opening config file '%s' for reading.\n",DEVICES_CONFIG_FILE_NAME);
abort(); }
return 1;
}
static int close_config_file () {
return fclose(config_file_handle);
}
/* returns 0 if error */
/* returns 1 if line read successfully */
/* returns -1 if eof found */
static int read_config_line (char *chip_id, int *signature_bytes,
int *program_memory_size, int *eeprom_memory_size) {
char conv[STRSIZE];
int i,j;
config_file_line[0]='-'; /* something != '+' */
while (config_file_line[0] != '+') {
if (feof(config_file_handle)) {
return -1; /* indicates EOF */
}
fgets(config_file_line, STRSIZE, config_file_handle); /* reads a line */
}
/* read chip id (ex. AT90S1200) */
get_parameter(0,chip_id);
/* reads signature bytes */
for (i=0; i<4; i++) {
get_parameter(i+1,conv);
for (j=0; j<2; j++) conv[j]=toupper(conv[j]);
if (strcmp(conv,"XX")==0) {
signature_bytes[i]=-1;
} else {
signature_bytes[i]=(unsigned char) strtoul(conv,NULL,16);
}
}
/* read size of program memory */
get_parameter(5,conv);
*program_memory_size=strtoul(conv,NULL,10);
/* read size of eeprom memory */
get_parameter(6,conv);
*eeprom_memory_size=strtoul(conv,NULL,10);
return 1;
}
static int get_parameter (int num, char *parameter) {
int cont, begin, end;
/* get a config file line parameter */
begin=1; cont=0;
while (cont<num) {
if (config_file_line[begin]==';') cont++;
if (config_file_line[begin]==0) cont=1000;
begin++;
}
end=begin;
while (cont<(num+1)) {
end++;
if (config_file_line[end]==';') cont++;
if (config_file_line[end]==0) cont=1000;
}
if (cont==1000) return 0;
strncpy(parameter,config_file_line+begin,end-begin);
parameter[end-begin]=0;
return 1;
}
static int tell_valid_devices() {
char chip_id[STRSIZE];
int sigbytes[5];
int program_memory_size=0;
int eeprom_memory_size=0;
chip_id[200]=0;
fprintf(stderr,"recognized devices are:");
open_config_file();
while (read_config_line(chip_id, sigbytes, &program_memory_size,
&eeprom_memory_size) == 1) {
if (program_memory_size>=0)
fprintf(stderr," %s",chip_id);
}
close_config_file();
fprintf(stderr,"\nif your AVR device is not supported, edit '%s'.\n",DEVICES_CONFIG_FILE_NAME);
return 1;
close_config_file();
return 1;
}
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