Hamlib/fodtrack/fodtrack.c

178 wiersze
4.1 KiB
C

/*
* Hamlib Rotator backend - Fodtrack parallel port
* Copyright (c) 2001-2010 by Stephane Fillod
*
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h> /* String function definitions */
#include <unistd.h> /* UNIX standard function definitions */
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_LINUX_PARPORT_H
#include <linux/parport.h>
#endif
#include "hamlib/rotator.h"
#include "parallel.h"
#include "misc.h"
#include "register.h"
#include "fodtrack.h"
#ifndef CP_ACTIVE_LOW_BITS
#define CP_ACTIVE_LOW_BITS 0x0B
#endif
/* ************************************************************************* */
/** outputs an direction to the interface */
static int setDirection(hamlib_port_t *port, unsigned char outputvalue,
int direction)
{
unsigned char outputstatus;
par_lock(port);
// set the data bits
par_write_data(port, outputvalue);
// autofd=true --> azimuth otherwhise elevation
if (direction)
{
outputstatus = PARPORT_CONTROL_AUTOFD;
}
else
{
outputstatus = 0;
}
par_write_control(port, outputstatus ^ CP_ACTIVE_LOW_BITS);
// and now the strobe impulse
usleep(1);
if (direction)
{
outputstatus = PARPORT_CONTROL_AUTOFD | PARPORT_CONTROL_STROBE;
}
else
{
outputstatus = PARPORT_CONTROL_STROBE;
}
par_write_control(port, outputstatus ^ CP_ACTIVE_LOW_BITS);
usleep(1);
if (direction)
{
outputstatus = PARPORT_CONTROL_AUTOFD;
}
else
{
outputstatus = 0;
}
par_write_control(port, outputstatus ^ CP_ACTIVE_LOW_BITS);
par_unlock(port);
return RIG_OK;
}
static int
fodtrack_set_position(ROT *rot, azimuth_t az, elevation_t el)
{
int retval;
hamlib_port_t *pport;
rig_debug(RIG_DEBUG_TRACE, "%s called: %f %f\n", __func__, az, el);
pport = &rot->state.rotport;
retval = setDirection(pport, el / (float)rot->state.max_el * 255.0, 0);
if (retval != RIG_OK)
{
return retval;
}
retval = setDirection(pport, az / (float)rot->state.max_az * 255.0, 1);
if (retval != RIG_OK)
{
return retval;
}
return RIG_OK;
}
/* ************************************************************************* */
/*
* Fodtrack rotator capabilities.
*/
/** Fodtrack implement essentially only the set position function.
*/
const struct rot_caps fodtrack_rot_caps =
{
.rot_model = ROT_MODEL_FODTRACK,
.model_name = "Fodtrack",
.mfg_name = "XQ2FOD",
.version = "0.2",
.copyright = "LGPL",
.status = RIG_STATUS_STABLE,
.rot_type = ROT_TYPE_OTHER,
.port_type = RIG_PORT_PARALLEL,
.write_delay = 0,
.post_write_delay = 0,
.timeout = 200,
.retry = 3,
.min_az = 0,
.max_az = 450,
.min_el = 0,
.max_el = 180,
.priv = NULL, /* priv */
.set_position = fodtrack_set_position,
};
/* ************************************************************************* */
DECLARE_INITROT_BACKEND(fodtrack)
{
rig_debug(RIG_DEBUG_VERBOSE, "%s called\n", __func__);
rot_register(&fodtrack_rot_caps);
return RIG_OK;
}
/* ************************************************************************* */
/* end of file */