48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/* *****************************************************************************
|
|
* misc/poke.c -- poke the calculator so the communication doesn't stop.
|
|
* Copyright (C) 2016-2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
|
|
*
|
|
* This file is part of libp7.
|
|
* libp7 is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation; either version 3.0 of the License,
|
|
* or (at your option) any later version.
|
|
*
|
|
* libp7 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 Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with libp7; if not, see <http://www.gnu.org/licenses/>.
|
|
* ************************************************************************** */
|
|
#include <libp7/internals.h>
|
|
|
|
/**
|
|
* p7_poke:
|
|
* Poke the device.
|
|
*
|
|
* @arg handle the libp7 handle.
|
|
* @return if it worked.
|
|
*/
|
|
|
|
int p7_poke(p7_handle_t *handle)
|
|
{
|
|
int err;
|
|
/* make checks */
|
|
chk_handle(handle);
|
|
chk_active(handle);
|
|
|
|
/* send the check packet */
|
|
if ((err = p7_send_check(handle))) {
|
|
log_fatal("couldn't send check");
|
|
return (err);
|
|
} else if (response.type != p7_pt_ack) {
|
|
log_fatal("check answer was unexpected");
|
|
return (p7_error_unknown);
|
|
}
|
|
|
|
/* no error */
|
|
return (0);
|
|
}
|