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avrdude/main.c

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/*
* avrdude - A Downloader/Uploader for AVR device programmers
* Copyright (C) 2000-2005 Brian S. Dean <bsd@bsdhome.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
*/
/* $Id$ */
/*
* Code to program an Atmel AVR device through one of the supported
* programmers.
*
* For parallel port connected programmers, the pin definitions can be
* changed via a config file. See the config file for instructions on
* how to add a programmer definition.
*
*/
#include "ac_cfg.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include "avr.h"
#include "config.h"
#include "confwin.h"
#include "fileio.h"
#include "lists.h"
#include "par.h"
#include "pindefs.h"
#include "term.h"
#include "safemode.h"
#include "update.h"
/* Get VERSION from ac_cfg.h */
char * version = VERSION;
char * progname;
char progbuf[PATH_MAX]; /* temporary buffer of spaces the same
length as progname; used for lining up
multiline messages */
struct list_walk_cookie
{
FILE *f;
const char *prefix;
};
static LISTID updates;
static LISTID extended_params;
/*
* global options
*/
int do_cycles; /* track erase-rewrite cycles */
int verbose; /* verbose output */
int quell_progress; /* un-verebose output */
int ovsigck; /* 1=override sig check, 0=don't */
/*
* usage message
*/
static void usage(void)
{
fprintf(stderr,
"Usage: %s [options]\n"
"Options:\n"
" -p <partno> Required. Specify AVR device.\n"
" -b <baudrate> Override RS-232 baud rate.\n"
" -B <bitclock> Specify JTAG/STK500v2 bit clock period (us).\n"
" -C <config-file> Specify location of configuration file.\n"
" -c <programmer> Specify programmer type.\n"
" -D Disable auto erase for flash memory\n"
" -i <delay> ISP Clock Delay [in microseconds]\n"
" -P <port> Specify connection port.\n"
" -F Override invalid signature check.\n"
" -e Perform a chip erase.\n"
" -O Perform RC oscillator calibration (see AVR053). \n"
" -U <memtype>:r|w|v:<filename>[:format]\n"
" Memory operation specification.\n"
" Multiple -U options are allowed, each request\n"
" is performed in the order specified.\n"
" -n Do not write anything to the device.\n"
" -V Do not verify.\n"
" -u Disable safemode, default when running from a script.\n"
" -s Silent safemode operation, will not ask you if\n"
" fuses should be changed back.\n"
" -t Enter terminal mode.\n"
" -E <exitspec>[,<exitspec>] List programmer exit specifications.\n"
" -x <extended_param> Pass <extended_param> to programmer.\n"
" -y Count # erase cycles in EEPROM.\n"
" -Y <number> Initialize erase cycle # in EEPROM.\n"
" -v Verbose output. -v -v for more.\n"
" -q Quell progress output. -q -q for less.\n"
" -? Display this usage.\n"
"\navrdude project: <URL:http://savannah.nongnu.org/projects/avrdude>\n"
,progname);
}
static void update_progress_tty (int percent, double etime, char *hdr)
{
static char hashes[51];
static char *header;
static int last = 0;
int i;
hashes[50] = 0;
memset (hashes, ' ', 50);
for (i=0; i<percent; i+=2) {
hashes[i/2] = '#';
}
if (hdr) {
fprintf (stderr, "\n");
last = 0;
header = hdr;
}
if (last == 0) {
fprintf(stderr, "\r%s | %s | %d%% %0.2fs",
header, hashes, percent, etime);
}
if (percent == 100) {
last = 1;
fprintf (stderr, "\n\n");
}
}
static void update_progress_no_tty (int percent, double etime, char *hdr)
{
static int done = 0;
static int last = 0;
int cnt = (percent>>1)*2;
if (hdr) {
fprintf (stderr, "\n%s | ", hdr);
last = 0;
done = 0;
}
else {
while ((cnt > last) && (done == 0)) {
fprintf (stderr, "#");
cnt -= 2;
}
}
if ((percent == 100) && (done == 0)) {
fprintf (stderr, " | 100%% %0.2fs\n\n", etime);
last = 0;
done = 1;
}
else
last = (percent>>1)*2; /* Make last a multiple of 2. */
}
static void list_programmers_callback(const char *name, const char *desc,
const char *cfgname, int cfglineno,
void *cookie)
{
struct list_walk_cookie *c = (struct list_walk_cookie *)cookie;
fprintf(c->f, "%s%-8s = %-30s [%s:%d]\n",
c->prefix, name, desc, cfgname, cfglineno);
}
static void list_programmers(FILE * f, const char *prefix, LISTID programmers)
{
struct list_walk_cookie c;
c.f = f;
c.prefix = prefix;
walk_programmers(programmers, list_programmers_callback, &c);
}
static void list_avrparts_callback(const char *name, const char *desc,
const char *cfgname, int cfglineno,
void *cookie)
{
struct list_walk_cookie *c = (struct list_walk_cookie *)cookie;
fprintf(c->f, "%s%-4s = %-15s [%s:%d]\n",
c->prefix, name, desc, cfgname, cfglineno);
}
static void list_parts(FILE * f, const char *prefix, LISTID avrparts)
{
struct list_walk_cookie c;
c.f = f;
c.prefix = prefix;
walk_avrparts(avrparts, list_avrparts_callback, &c);
}
/*
* main routine
*/
int main(int argc, char * argv [])
{
int rc; /* general return code checking */
int exitrc; /* exit code for main() */
int i; /* general loop counter */
int ch; /* options flag */
int len; /* length for various strings */
struct avrpart * p; /* which avr part we are programming */
struct avrpart * v; /* used for verify */
AVRMEM * sig; /* signature data */
struct stat sb;
UPDATE * upd;
LNODEID * ln;
PROGRAMMER * pgm;
/* options / operating mode variables */
int erase; /* 1=erase chip, 0=don't */
int calibrate; /* 1=calibrate RC oscillator, 0=don't */
int auto_erase; /* 0=never erase unless explicity told to do
so, 1=erase if we are going to program flash */
char * port; /* device port (/dev/xxx) */
int terminal; /* 1=enter terminal mode, 0=don't */
int nowrite; /* don't actually write anything to the chip */
int verify; /* perform a verify operation */
char * exitspecs; /* exit specs string from command line */
char * programmer; /* programmer id */
char * partdesc; /* part id */
char sys_config[PATH_MAX]; /* system wide config file */
char usr_config[PATH_MAX]; /* per-user config file */
int cycles; /* erase-rewrite cycles */
int set_cycles; /* value to set the erase-rewrite cycles to */
char * e; /* for strtol() error checking */
int baudrate; /* override default programmer baud rate */
double bitclock; /* Specify programmer bit clock (JTAG ICE) */
int ispdelay; /* Specify the delay for ISP clock */
int safemode; /* Enable safemode, 1=safemode on, 0=normal */
int silentsafe; /* Don't ask about fuses, 1=silent, 0=normal */
unsigned char safemode_lfuse = 0xff;
unsigned char safemode_hfuse = 0xff;
unsigned char safemode_efuse = 0xff;
unsigned char safemode_fuse = 0xff;
char * safemode_response;
int fuses_specified = 0;
int fuses_updated = 0;
#if !defined(WIN32NATIVE)
char * homedir;
#endif
/*
* Set line buffering for file descriptors so we see stdout and stderr
* properly interleaved.
*/
setvbuf(stdout, (char*)NULL, _IOLBF, 0);
setvbuf(stderr, (char*)NULL, _IOLBF, 0);
progname = strrchr(argv[0],'/');
#if defined (WIN32NATIVE)
/* take care of backslash as dir sep in W32 */
if (!progname) progname = strrchr(argv[0],'\\');
#endif /* WIN32NATIVE */
if (progname)
progname++;
else
progname = argv[0];
default_parallel[0] = 0;
default_serial[0] = 0;
init_config();
updates = lcreat(NULL, 0);
if (updates == NULL) {
fprintf(stderr, "%s: cannot initialize updater list\n", progname);
exit(1);
}
extended_params = lcreat(NULL, 0);
if (extended_params == NULL) {
fprintf(stderr, "%s: cannot initialize extended parameter list\n", progname);
exit(1);
}
partdesc = NULL;
port = default_parallel;
erase = 0;
calibrate = 0;
auto_erase = 1;
p = NULL;
ovsigck = 0;
terminal = 0;
nowrite = 0;
verify = 1; /* on by default */
quell_progress = 0;
exitspecs = NULL;
pgm = NULL;
programmer = default_programmer;
verbose = 0;
do_cycles = 0;
set_cycles = -1;
baudrate = 0;
bitclock = 0.0;
ispdelay = 0;
safemode = 1; /* Safemode on by default */
silentsafe = 0; /* Ask by default */
if (isatty(STDIN_FILENO) == 0)
safemode = 0; /* Turn off safemode if this isn't a terminal */
#if defined(WIN32NATIVE)
win_sys_config_set(sys_config);
win_usr_config_set(usr_config);
#else
strcpy(sys_config, CONFIG_DIR);
i = strlen(sys_config);
if (i && (sys_config[i-1] != '/'))
strcat(sys_config, "/");
strcat(sys_config, "avrdude.conf");
usr_config[0] = 0;
homedir = getenv("HOME");
if (homedir != NULL) {
strcpy(usr_config, homedir);
i = strlen(usr_config);
if (i && (usr_config[i-1] != '/'))
strcat(usr_config, "/");
strcat(usr_config, ".avrduderc");
}
#endif
len = strlen(progname) + 2;
for (i=0; i<len; i++)
progbuf[i] = ' ';
progbuf[i] = 0;
/*
* check for no arguments
*/
if (argc == 1) {
usage();
return 0;
}
/*
* process command line arguments
*/
while ((ch = getopt(argc,argv,"?b:B:c:C:DeE:Fi:np:OP:qstU:uvVx:yY:")) != -1) {
switch (ch) {
case 'b': /* override default programmer baud rate */
baudrate = strtol(optarg, &e, 0);
if ((e == optarg) || (*e != 0)) {
fprintf(stderr, "%s: invalid baud rate specified '%s'\n",
progname, optarg);
exit(1);
}
break;
case 'B': /* specify JTAG ICE bit clock period */
bitclock = strtod(optarg, &e);
if ((e == optarg) || (*e != 0) || bitclock == 0.0) {
fprintf(stderr, "%s: invalid bit clock period specified '%s'\n",
progname, optarg);
exit(1);
}
break;
case 'i': /* specify isp clock delay */
ispdelay = strtol(optarg, &e,10);
if ((e == optarg) || (*e != 0) || ispdelay == 0) {
fprintf(stderr, "%s: invalid isp clock delay specified '%s'\n",
progname, optarg);
exit(1);
}
break;
case 'c': /* programmer id */
programmer = optarg;
break;
case 'C': /* system wide configuration file */
strncpy(sys_config, optarg, PATH_MAX);
sys_config[PATH_MAX-1] = 0;
break;
case 'D': /* disable auto erase */
auto_erase = 0;
break;
case 'e': /* perform a chip erase */
erase = 1;
break;
case 'E':
exitspecs = optarg;
break;
case 'F': /* override invalid signature check */
ovsigck = 1;
break;
case 'n':
nowrite = 1;
break;
case 'O': /* perform RC oscillator calibration */
calibrate = 1;
break;
case 'p' : /* specify AVR part */
partdesc = optarg;
break;
case 'P':
port = optarg;
break;
case 'q' : /* Quell progress output */
quell_progress++ ;
break;
case 's' : /* Silent safemode */
silentsafe = 1;
safemode = 1;
break;
case 't': /* enter terminal mode */
terminal = 1;
break;
case 'u' : /* Disable safemode */
safemode = 0;
break;
case 'U':
upd = parse_op(optarg);
if (upd == NULL) {
fprintf(stderr, "%s: error parsing update operation '%s'\n",
progname, optarg);
exit(1);
}
ladd(updates, upd);
if (verify && upd->op == DEVICE_WRITE) {
upd = dup_update(upd);
upd->op = DEVICE_VERIFY;
ladd(updates, upd);
}
break;
case 'v':
verbose++;
break;
case 'V':
verify = 0;
break;
case 'x':
ladd(extended_params, optarg);
break;
case 'y':
do_cycles = 1;
break;
case 'Y':
set_cycles = strtol(optarg, &e, 0);
if ((e == optarg) || (*e != 0)) {
fprintf(stderr, "%s: invalid cycle count '%s'\n",
progname, optarg);
exit(1);
}
do_cycles = 1;
break;
case '?': /* help */
usage();
exit(0);
break;
default:
fprintf(stderr, "%s: invalid option -%c\n\n", progname, ch);
usage();
exit(1);
break;
}
}
if (quell_progress == 0) {
if (isatty (STDERR_FILENO))
update_progress = update_progress_tty;
else {
update_progress = update_progress_no_tty;
/* disable all buffering of stderr for compatibility with
software that captures and redirects output to a GUI
i.e. Programmers Notepad */
setvbuf( stderr, NULL, _IONBF, 0 );
setvbuf( stdout, NULL, _IONBF, 0 );
}
}
if (verbose) {
/*
* Print out an identifying string so folks can tell what version
* they are running
*/
fprintf(stderr,
"\n%s: Version %s, compiled on %s at %s\n"
"%sCopyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/\n\n",
progname, version, __DATE__, __TIME__, progbuf);
}
if (verbose) {
fprintf(stderr, "%sSystem wide configuration file is \"%s\"\n",
progbuf, sys_config);
}
rc = read_config(sys_config);
if (rc) {
fprintf(stderr,
"%s: error reading system wide configuration file \"%s\"\n",
progname, sys_config);
exit(1);
}
if (usr_config[0] != 0) {
if (verbose) {
fprintf(stderr, "%sUser configuration file is \"%s\"\n",
progbuf, usr_config);
}
rc = stat(usr_config, &sb);
if ((rc < 0) || ((sb.st_mode & S_IFREG) == 0)) {
if (verbose) {
fprintf(stderr,
"%sUser configuration file does not exist or is not a "
"regular file, skipping\n",
progbuf);
}
}
else {
rc = read_config(usr_config);
if (rc) {
fprintf(stderr, "%s: error reading user configuration file \"%s\"\n",
progname, usr_config);
exit(1);
}
}
}
if (verbose) {
fprintf(stderr, "\n");
}
if (partdesc) {
if (strcmp(partdesc, "?") == 0) {
fprintf(stderr, "\n");
fprintf(stderr,"Valid parts are:\n");
list_parts(stderr, " ", part_list);
fprintf(stderr, "\n");
exit(1);
}
}
if (programmer) {
if (strcmp(programmer, "?") == 0) {
fprintf(stderr, "\n");
fprintf(stderr,"Valid programmers are:\n");
list_programmers(stderr, " ", programmers);
fprintf(stderr,"\n");
exit(1);
}
}
if (programmer[0] == 0) {
fprintf(stderr,
"\n%s: no programmer has been specified on the command line "
"or the config file\n",
progname);
fprintf(stderr,
"%sSpecify a programmer using the -c option and try again\n\n",
progbuf);
exit(1);
}
pgm = locate_programmer(programmers, programmer);
if (pgm == NULL) {
fprintf(stderr,"\n");
fprintf(stderr,
"%s: Can't find programmer id \"%s\"\n",
progname, programmer);
fprintf(stderr,"\nValid programmers are:\n");
list_programmers(stderr, " ", programmers);
fprintf(stderr,"\n");
exit(1);
}
if (lsize(extended_params) > 0) {
if (pgm->parseextparams == NULL) {
fprintf(stderr,
"%s: WARNING: Programmer doesn't support extended parameters,"
" -x option(s) ignored\n",
progname);
} else {
if (pgm->parseextparams(pgm, extended_params) < 0) {
fprintf(stderr,
"%s: Error parsing extended parameter list\n",
progname);
exit(1);
}
}
}
if ((strcmp(pgm->type, "STK500") == 0) ||
(strcmp(pgm->type, "avr910") == 0) ||
(strcmp(pgm->type, "STK500V2") == 0) ||
(strcmp(pgm->type, "JTAGMKII") == 0)) {
if (port == default_parallel) {
port = default_serial;
}
}
if (partdesc == NULL) {
fprintf(stderr,
"%s: No AVR part has been specified, use \"-p Part\"\n\n",
progname);
fprintf(stderr,"Valid parts are:\n");
list_parts(stderr, " ", part_list);
fprintf(stderr, "\n");
exit(1);
}
p = locate_part(part_list, partdesc);
if (p == NULL) {
fprintf(stderr,
"%s: AVR Part \"%s\" not found.\n\n",
progname, partdesc);
fprintf(stderr,"Valid parts are:\n");
list_parts(stderr, " ", part_list);
fprintf(stderr, "\n");
exit(1);
}
if (exitspecs != NULL) {
if (pgm->parseexitspecs == NULL) {
fprintf(stderr,
"%s: WARNING: -E option not supported by this programmer type\n",
progname);
exitspecs = NULL;
}
else if (pgm->parseexitspecs(pgm, exitspecs) < 0) {
usage();
exit(1);
}
}
/*
* set up seperate instances of the avr part, one for use in
* programming, one for use in verifying. These are separate
* because they need separate flash and eeprom buffer space
*/
p = avr_dup_part(p);
v = avr_dup_part(p);
/*
* open the programmer
*/
if (port[0] == 0) {
fprintf(stderr, "\n%s: no port has been specified on the command line "
"or the config file\n",
progname);
fprintf(stderr, "%sSpecify a port using the -P option and try again\n\n",
progbuf);
exit(1);
}
if (verbose) {
fprintf(stderr, "%sUsing Port : %s\n", progbuf, port);
fprintf(stderr, "%sUsing Programmer : %s\n", progbuf, programmer);
}
if (baudrate != 0) {
if (verbose) {
fprintf(stderr, "%sOverriding Baud Rate : %d\n", progbuf, baudrate);
}
pgm->baudrate = baudrate;
}
if (bitclock != 0.0) {
if (verbose) {
fprintf(stderr, "%sSetting bit clk period: %.1f\n", progbuf, bitclock);
}
pgm->bitclock = bitclock * 1e-6;
}
if (ispdelay != 0) {
if (verbose) {
fprintf(stderr, "%sSetting isp clock delay: %3i\n", progbuf, ispdelay);
}
pgm->ispdelay = ispdelay;
}
rc = pgm->open(pgm, port);
if (rc < 0) {
exitrc = 1;
pgm->ppidata = 0; /* clear all bits at exit */
goto main_exit;
}
if (calibrate) {
/*
* perform an RC oscillator calibration
* as outlined in appnote AVR053
*/
fprintf(stderr, "%s: performing RC oscillator calibration\n", progname);
exitrc = pgm->perform_osccal(pgm);
if (exitrc == 0 && quell_progress < 2) {
fprintf(stderr,
"%s: calibration value is now stored in EEPROM at address 0\n",
progname);
}
goto main_exit;
}
if (verbose) {
avr_display(stderr, p, progbuf, verbose);
fprintf(stderr, "\n");
programmer_display(pgm, progbuf);
}
if (quell_progress < 2) {
fprintf(stderr, "\n");
}
exitrc = 0;
/*
* enable the programmer
*/
pgm->enable(pgm);
/*
* turn off all the status leds
*/
pgm->rdy_led(pgm, OFF);
pgm->err_led(pgm, OFF);
pgm->pgm_led(pgm, OFF);
pgm->vfy_led(pgm, OFF);
/*
* initialize the chip in preperation for accepting commands
*/
rc = pgm->initialize(pgm, p);
if (rc < 0) {
fprintf(stderr, "%s: initialization failed, rc=%d\n", progname, rc);
if (!ovsigck) {
fprintf(stderr, "%sDouble check connections and try again, "
"or use -F to override\n"
"%sthis check.\n\n",
progbuf, progbuf);
exitrc = 1;
goto main_exit;
}
}
/* indicate ready */
pgm->rdy_led(pgm, ON);
if (quell_progress < 2) {
fprintf(stderr,
"%s: AVR device initialized and ready to accept instructions\n",
progname);
}
/*
* Let's read the signature bytes to make sure there is at least a
* chip on the other end that is responding correctly. A check
* against 0xffffff / 0x000000 should ensure that the signature bytes
* are valid.
*/
rc = avr_signature(pgm, p);
if (rc != 0) {
fprintf(stderr, "%s: error reading signature data, rc=%d\n",
progname, rc);
exitrc = 1;
goto main_exit;
}
sig = avr_locate_mem(p, "signature");
if (sig == NULL) {
fprintf(stderr,
"%s: WARNING: signature data not defined for device \"%s\"\n",
progname, p->desc);
}
if (sig != NULL) {
int ff, zz;
if (quell_progress < 2) {
fprintf(stderr, "%s: Device signature = 0x", progname);
}
ff = zz = 1;
for (i=0; i<sig->size; i++) {
if (quell_progress < 2) {
fprintf(stderr, "%02x", sig->buf[i]);
}
if (sig->buf[i] != 0xff)
ff = 0;
if (sig->buf[i] != 0x00)
zz = 0;
}
if (quell_progress < 2) {
fprintf(stderr, "\n");
}
if (ff || zz) {
fprintf(stderr,
"%s: Yikes! Invalid device signature.\n", progname);
if (!ovsigck) {
fprintf(stderr, "%sDouble check connections and try again, "
"or use -F to override\n"
"%sthis check.\n\n",
progbuf, progbuf);
exitrc = 1;
goto main_exit;
}
}
if (sig->size != 3 ||
sig->buf[0] != p->signature[0] ||
sig->buf[1] != p->signature[1] ||
sig->buf[2] != p->signature[2]) {
fprintf(stderr,
"%s: Expected signature for %s is %02X %02X %02X\n",
progname, p->desc,
p->signature[0], p->signature[1], p->signature[2]);
if (!ovsigck) {
fprintf(stderr, "%sDouble check chip, "
"or use -F to override this check.\n",
progbuf);
exitrc = 1;
goto main_exit;
}
}
}
if (safemode == 1) {
/* If safemode is enabled, go ahead and read the current low, high,
and extended fuse bytes as needed */
rc = safemode_readfuses(&safemode_lfuse, &safemode_hfuse,
&safemode_efuse, &safemode_fuse, pgm, p, verbose);
if (rc != 0) {
//Check if the programmer just doesn't support reading
if (rc == -5)
{
if (verbose > 0)
{
fprintf(stderr, "%s: safemode: Fuse reading not support by programmer.\n"
" Safemode disabled.\n", progname);
}
safemode = 0;
}
else
{
fprintf(stderr, "%s: safemode: To protect your AVR the programming "
"will be aborted\n",
progname);
exitrc = 1;
goto main_exit;
}
}
else {
//Save the fuses as default
safemode_memfuses(1, &safemode_lfuse, &safemode_hfuse, &safemode_efuse, &safemode_fuse);
}
}
if ((erase == 0) && (auto_erase == 1)) {
AVRMEM * m;
for (ln=lfirst(updates); ln; ln=lnext(ln)) {
upd = ldata(ln);
m = avr_locate_mem(p, upd->memtype);
if (m == NULL)
continue;
if ((strcasecmp(m->desc, "flash") == 0) && (upd->op == DEVICE_WRITE)) {
erase = 1;
if (quell_progress < 2) {
fprintf(stderr,
"%s: NOTE: FLASH memory has been specified, an erase cycle "
"will be performed\n"
"%sTo disable this feature, specify the -D option.\n",
progname, progbuf);
}
break;
}
}
}
/*
* Display cycle count, if and only if it is not set later on.
*
* The cycle count will be displayed anytime it will be changed later.
*/
if ((set_cycles == -1) && ((erase == 0) || (do_cycles == 0))) {
/*
* see if the cycle count in the last four bytes of eeprom seems
* reasonable
*/
rc = avr_get_cycle_count(pgm, p, &cycles);
if (quell_progress < 2) {
if ((rc >= 0) && (cycles != 0)) {
fprintf(stderr,
"%s: current erase-rewrite cycle count is %d%s\n",
progname, cycles,
do_cycles ? "" : " (if being tracked)");
}
}
}
if (set_cycles != -1) {
rc = avr_get_cycle_count(pgm, p, &cycles);
if (rc == 0) {
/*
* only attempt to update the cycle counter if we can actually
* read the old value
*/
cycles = set_cycles;
if (quell_progress < 2) {
fprintf(stderr, "%s: setting erase-rewrite cycle count to %d\n",
progname, cycles);
}
rc = avr_put_cycle_count(pgm, p, cycles);
if (rc < 0) {
fprintf(stderr,
"%s: WARNING: failed to update the erase-rewrite cycle "
"counter\n",
progname);
}
}
}
if (erase) {
/*
* erase the chip's flash and eeprom memories, this is required
* before the chip can accept new programming
*/
if (quell_progress < 2) {
fprintf(stderr, "%s: erasing chip\n", progname);
}
avr_chip_erase(pgm, p);
}
if (terminal) {
/*
* terminal mode
*/
exitrc = terminal_mode(pgm, p);
}
for (ln=lfirst(updates); ln; ln=lnext(ln)) {
upd = ldata(ln);
rc = do_op(pgm, p, upd, nowrite, verify);
if (rc) {
exitrc = 1;
break;
}
}
/* Right before we exit programming mode, which will make the fuse
bits active, check to make sure they are still correct */
if (safemode == 1){
/* If safemode is enabled, go ahead and read the current low,
* high, and extended fuse bytes as needed */
unsigned char safemodeafter_lfuse = 0xff;
unsigned char safemodeafter_hfuse = 0xff;
unsigned char safemodeafter_efuse = 0xff;
unsigned char safemodeafter_fuse = 0xff;
unsigned char failures = 0;
char yes[1] = {'y'};
if (quell_progress < 2) {
fprintf(stderr, "\n");
}
//Restore the default fuse values
safemode_memfuses(0, &safemode_lfuse, &safemode_hfuse, &safemode_efuse, &safemode_fuse);
/* Try reading back fuses, make sure they are reliable to read back */
if (safemode_readfuses(&safemodeafter_lfuse, &safemodeafter_hfuse,
&safemodeafter_efuse, &safemodeafter_fuse, pgm, p, verbose) != 0) {
/* Uh-oh.. try once more to read back fuses */
if (safemode_readfuses(&safemodeafter_lfuse, &safemodeafter_hfuse,
&safemodeafter_efuse, &safemodeafter_fuse, pgm, p, verbose) != 0) {
fprintf(stderr,
"%s: safemode: Sorry, reading back fuses was unreliable. "
"I have given up and exited programming mode\n",
progname);
exitrc = 1;
goto main_exit;
}
}
/* Now check what fuses are against what they should be */
if (safemodeafter_fuse != safemode_fuse) {
fuses_updated = 1;
fprintf(stderr, "%s: safemode: fuse changed! Was %x, and is now %x\n",
progname, safemode_fuse, safemodeafter_fuse);
/* Ask user - should we change them */
if (silentsafe == 0)
safemode_response = terminal_get_input("Would you like this fuse to be changed back? [y/n] ");
else
safemode_response = yes;
if (tolower(safemode_response[0]) == 'y') {
/* Enough chit-chat, time to program some fuses and check them */
if (safemode_writefuse (safemode_fuse, "fuse", pgm, p,
10, verbose) == 0) {
fprintf(stderr, "%s: safemode: and is now rescued\n", progname);
}
else {
fprintf(stderr, "%s: and COULD NOT be changed\n", progname);
failures++;
}
}
}
/* Now check what fuses are against what they should be */
if (safemodeafter_lfuse != safemode_lfuse) {
fuses_updated = 1;
fprintf(stderr, "%s: safemode: lfuse changed! Was %x, and is now %x\n",
progname, safemode_lfuse, safemodeafter_lfuse);
/* Ask user - should we change them */
if (silentsafe == 0)
safemode_response = terminal_get_input("Would you like this fuse to be changed back? [y/n] ");
else
safemode_response = yes;
if (tolower(safemode_response[0]) == 'y') {
/* Enough chit-chat, time to program some fuses and check them */
if (safemode_writefuse (safemode_lfuse, "lfuse", pgm, p,
10, verbose) == 0) {
fprintf(stderr, "%s: safemode: and is now rescued\n", progname);
}
else {
fprintf(stderr, "%s: and COULD NOT be changed\n", progname);
failures++;
}
}
}
/* Now check what fuses are against what they should be */
if (safemodeafter_hfuse != safemode_hfuse) {
fuses_updated = 1;
fprintf(stderr, "%s: safemode: hfuse changed! Was %x, and is now %x\n",
progname, safemode_hfuse, safemodeafter_hfuse);
/* Ask user - should we change them */
if (silentsafe == 0)
safemode_response = terminal_get_input("Would you like this fuse to be changed back? [y/n] ");
else
safemode_response = yes;
if (tolower(safemode_response[0]) == 'y') {
/* Enough chit-chat, time to program some fuses and check them */
if (safemode_writefuse(safemode_hfuse, "hfuse", pgm, p,
10, verbose) == 0) {
fprintf(stderr, "%s: safemode: and is now rescued\n", progname);
}
else {
fprintf(stderr, "%s: and COULD NOT be changed\n", progname);
failures++;
}
}
}
/* Now check what fuses are against what they should be */
if (safemodeafter_efuse != safemode_efuse) {
fuses_updated = 1;
fprintf(stderr, "%s: safemode: efuse changed! Was %x, and is now %x\n",
progname, safemode_efuse, safemodeafter_efuse);
/* Ask user - should we change them */
if (silentsafe == 0)
safemode_response = terminal_get_input("Would you like this fuse to be changed back? [y/n] ");
else
safemode_response = yes;
if (tolower(safemode_response[0]) == 'y') {
/* Enough chit-chat, time to program some fuses and check them */
if (safemode_writefuse (safemode_efuse, "efuse", pgm, p,
10, verbose) == 0) {
fprintf(stderr, "%s: safemode: and is now rescued\n", progname);
}
else {
fprintf(stderr, "%s: and COULD NOT be changed\n", progname);
failures++;
}
}
}
if (quell_progress < 2) {
fprintf(stderr, "%s: safemode: ", progname);
if (failures == 0) {
fprintf(stderr, "Fuses OK\n");
}
else {
fprintf(stderr, "Fuses not recovered, sorry\n");
}
}
if (fuses_updated && fuses_specified) {
exitrc = 1;
}
}
main_exit:
/*
* program complete
*/
pgm->powerdown(pgm);
pgm->disable(pgm);
pgm->rdy_led(pgm, OFF);
pgm->close(pgm);
if (quell_progress < 2) {
fprintf(stderr, "\n%s done. Thank you.\n\n", progname);
}
return exitrc;
}
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