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/**
* Common code for programs.
*
* Copyright 2006 David Anderson <dave@natulte.net>
* Copyright 2025 Nicolas Schodet
*
* 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
*/
#include <assert.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "cmd.h"
#include "common.h"
#include "lowlevel.h"
int
handle_error(nxt_t *nxt, const char *msg, nxt_error_t err)
{
fprintf(stderr, "%s: %s\n", msg, nxt_str_error(err));
if (nxt != NULL)
{
nxt_close(nxt);
nxt_exit(nxt);
}
exit(1);
}
static void
list_cb(void *user, const char *connection, nxt_firmware fw, const char *serial,
const char *name)
{
bool *seen = user;
const char *fws[] = { "SAMBA", "LEGO", "NXTOS" };
if (!*seen)
{
printf("%-11s %-8s %-17s %s\n", "Connection", "Firmware",
"Serial number", "Brick name");
*seen = true;
}
printf("%-11s %-8s %-17s %s\n", connection, fws[fw], serial ? serial : "-",
name ? name : "-");
}
static void
common_list(void)
{
nxt_t *nxt;
bool seen = false;
NXT_HANDLE_ERR(nxt_init(&nxt), NULL, "Error during library initialization");
NXT_HANDLE_ERR(nxt_list(nxt, list_cb, &seen), nxt,
"Error while scanning for bricks");
if (!seen)
fputs("No brick found\n", stdout);
nxt_exit(nxt);
}
int
common_getopt(int argc, char *const *argv, const char *optstring,
common_options_t *common_options,
void (*usage)(const char *, int))
{
int c;
while ((c = getopt(argc, argv, optstring ? optstring : COMMON_OPTSTRING)) !=
-1)
{
switch (c)
{
case 'l':
common_options->list = true;
break;
case 'y':
common_options->yes = true;
break;
case 'h':
usage(argv[0], 0);
break;
case 'b':
common_options->bootloader_mode_only = true;
break;
case 's':
common_options->match_serial = optarg;
break;
case 'n':
common_options->match_name = optarg;
break;
default:
return c;
}
}
if (common_options->list)
{
if (optind != argc)
{
fprintf(stderr, "Too many arguments with -l option\n");
usage(argv[0], 1);
}
common_list();
exit(0);
}
return -1;
}
static nxt_error_t
common_reset_bootloader(nxt_t *nxt, bool yes)
{
char rep[80];
nxt_error_t err;
if (!yes)
{
nxt_device_info_t device_info;
if (!isatty(fileno(stdin)) || !isatty(fileno(stdout)))
{
fprintf(stderr, "No TTY, can not ask for permission to continue.\n");
return NXT_NOT_PRESENT;
}
NXT_HANDLE_ERR(nxt_open(nxt), nxt, "Error while connecting to NXT");
NXT_HANDLE_ERR(nxt_cmd_get_device_info(nxt, &device_info), nxt,
"Error while getting device information");
printf("Found brick:\n Serial: %s\n Name: %s\n", device_info.serial,
device_info.name);
printf("Reset to bootloader (this erases the brick memory)?\n"
"Please type RESET and press enter to continue:\n");
fgets(rep, sizeof(rep), stdin);
if (strcmp(rep, "RESET\n") != 0)
{
printf("Not resetting, bye!\n");
return NXT_NOT_PRESENT;
}
}
printf("Resetting brick, it should make a clicking noise...\n");
NXT_HANDLE_ERR(nxt_cmd_boot(nxt, true), nxt, "Error while resetting");
nxt_close(nxt);
for (int i = 0; i < 20; i++)
{
putchar('.');
fflush(stdout);
sleep(1);
err = nxt_find(nxt, SAMBA, NULL, NULL);
if (err != NXT_NOT_PRESENT)
NXT_HANDLE_ERR(err, nxt, "Error while scanning for NXT bootloader");
if (!err)
break;
}
putchar('\n');
return err;
}
void
common_find_bootloader(nxt_t *nxt, const common_options_t *common_options)
{
nxt_error_t err;
err = nxt_find(nxt, SAMBA, NULL, NULL);
if (err != NXT_NOT_PRESENT)
NXT_HANDLE_ERR(err, nxt, "Error while scanning for NXT bootloader");
if (err == NXT_NOT_PRESENT && !common_options->bootloader_mode_only)
{
// Try to find a device not in bootloader mode.
err = nxt_find(nxt, LEGO, common_options->match_serial,
common_options->match_name);
if (err != NXT_NOT_PRESENT)
NXT_HANDLE_ERR(err, nxt, "Error while scanning for NXT");
if (!err)
err = common_reset_bootloader(nxt, common_options->yes);
}
if (err == NXT_NOT_PRESENT)
{
fprintf(stderr, "NXT not found. Is it properly plugged in via USB?\n");
exit(1);
}
assert(err == NXT_OK);
}
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