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#ifndef aux_h
#define aux_h
/* aux.h */
/* asserv - Position & speed motor control on AVR. {{{
 *
 * Copyright (C) 2008 Nicolas Schodet
 *
 * APBTeam:
 *        Web: http://apbteam.org/
 *      Email: team AT apbteam DOT org
 *
 * 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 "cs.h"

#if AC_ASSERV_AUX_NB

# define AUX_IF(x...) x
# define AUX_OR_0(x) (x)

/** Auxiliary motor informations. */
struct aux_t
{
    /** Associated control system. */
    control_system_single_t *cs;
    /** Absolute position. */
    int16_t pos;
    /** Trajectory mode. */
    uint8_t traj_mode;
    /** Goto position position. */
    uint32_t goto_pos;
    /** Wait counter. */
    uint16_t wait;
    /** Top zero port input register. */
    volatile uint8_t *zero_pin;
    /** Top zero port bit value. */
    uint8_t zero_bv;
    /** Handle blocking by aux instead of pos. */
    uint8_t handle_blocking;
};

extern struct aux_t aux[AC_ASSERV_AUX_NB];

void
aux_init (void);

void
aux_pos_update (void);

void
aux_traj_speed_start (struct aux_t *aux);

void
aux_traj_goto_start (struct aux_t *aux, uint16_t pos);

void
aux_traj_find_zero_start (struct aux_t *aux, int16_t speed);

void
aux_traj_find_zero_reverse_start (struct aux_t *aux, int16_t speed);

void
aux_traj_find_limit_start (struct aux_t *aux, int16_t speed);

void
aux_traj_update (void);

#else /* !AC_ASSERV_AUX_NB */

# define AUX_IF(x...)
# define AUX_OR_0(x) 0

extern inline void
aux_init (void)
{
}

extern inline void
aux_pos_update (void)
{
}

extern inline void
aux_traj_update (void)
{
}

#endif /* !AC_ASSERV_AUX_NB */

#endif /* aux_h */